Graco Staple Gun 3A2494D User Manual

Instructions - Parts  
Pro Xp™ Electrostatic Air Spray  
3A2494D  
Gun  
EN  
For use in Class I, Div. I Hazardous Locations using Group D spray materials.  
For use in Group II, Zone 1 Explosive Atmosphere Locations using Group IIA spray materials. For  
professional use only.  
Important Safety Instructions  
Read all warnings and instructions in this manual.  
Save these instructions.  
100 psi (0.7 MPa, 7.0 bar) Maximum  
Fluid Working Pressure  
100 psi (0.7 MPa, 7.0 bar) Maximum Air  
Working Pressure  
See page 3 for model part  
numbers and approval  
information.  
PROVEN QUALITY. LEADING TECHNOLOGY.  
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Models  
Models  
Part No. kV  
Nozzle  
1.2  
Standard  
Display  
Smart  
Display  
Standard  
Coatings  
High  
Increased  
Conductivity/ Transfer  
1.5  
Round  
High Wear  
Efficiency  
mm mm Spray  
L40T10 40  
L40T14 40  
L40T15 40  
L40T16 40  
L60T10 60  
L60T11 60  
L60T12 60  
L60T16 60  
L60M10 60  
L60M12 60  
L60M16 60  
L85T10 85  
L85T16 85  
L85M10 85  
L85M16 85  
II 2 G  
EEx 0.24 mJ T6  
FM12ATEX0068  
EN 50050  
Ta 0°C – 50°C  
3A2494D  
3
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Warnings  
Warnings  
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The  
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific  
risks. When these symbols appear in the body of this manual or on warning labels, refer back to these  
Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout  
the body of this manual where applicable.  
WARNING  
FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD  
work area  
Flammable fumes, such as solvent and paint fumes, in  
prevent fire, explosion, and electric shock:  
can ignite or explode. To help  
• Electrostatic equipment must be used only by trained, qualified personnel who understand  
the requirements of this manual.  
• Ground all equipment, personnel, object being sprayed, and conductive objects in or close to  
Grounding  
spray area. Resistance must not exceed 1 megohm. See  
• Only use grounded Graco conductive air supply hoses.  
instructions.  
• Do not use pail liners unless they are conductive and grounded.  
Stop operation immediately  
if static sparking occurs or you feel a shock. Do not use  
equipment until you identify and correct the problem.  
• Check gun resistance, hose resistance, and electrical grounding daily.  
• Use and clean equipment only in well ventilated area.  
• Interlock the gun air supply to prevent operation unless ventilating fans are on.  
• Use cleaning solvents with highest possible flash point when flushing or cleaning equipment.  
• To clean the exterior of the equipment, cleaning solvents must have a flash point at least  
5°C above ambient temperature.  
• Always turn the electrostatics off when flushing, cleaning or servicing equipment.  
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and  
plastic drop cloths (potential static arc).  
• Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.  
• Keep spray area free of debris, including solvent, rags and gasoline.  
• Keep a working fire extinguisher in the work area.  
4
3A2494D  
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Warnings  
WARNING  
PRESSURIZED EQUIPMENT HAZARD  
Fluid from the equipment, leaks, or ruptured components can splash in the eyes or on skin  
and cause serious injury.  
Pressure Relief Procedure  
• Follow the  
when you stop spraying/dispensing and before  
cleaning, checking, or servicing equipment.  
• Tighten all fluid connections before operating the equipment.  
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.  
PLASTIC PARTS CLEANING SOLVENT HAZARD  
Many solvents can degrade plastic parts and cause them to fail, which could cause serious  
injury or property damage.  
• Use only compatible water-based solvents to clean plastic structural or pressure-containing  
parts.  
Technical Data  
• See  
in this and all other equipment instruction manuals. Read fluid and  
solvent manufacturer’s MSDSs and recommendations.  
TOXIC FLUID OR FUMES  
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin,  
inhaled, or swallowed.  
• Read MSDS’s to know the specific hazards of the fluids you are using.  
• Store hazardous fluid in approved containers, and dispose of it according to applicable  
guidelines.  
PERSONAL PROTECTIVE EQUIPMENT  
Wear appropriate protective equipment when in the work area to help prevent serious injury,  
including eye injury, hearing loss, inhalation of toxic fumes, and burns. This protective  
equipment includes but is not limited to:  
• Protective eyewear, and hearing protection.  
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent  
manufacturer.  
3A2494D  
5
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Warnings  
WARNING  
EQUIPMENT MISUSE HAZARD  
Misuse can cause death or serious injury.  
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.  
• Do not exceed the maximum working pressure or temperature rating of the lowest rated  
Technical Data  
system component. See  
in all equipment manuals.  
Technical Data  
• Use fluids and solvents that are compatible with equipment wetted parts. See  
in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete  
information about your material, request MSDS from distributor or retailer.  
• Do not leave the work area while equipment is energized or under pressure.  
Pressure Relief Procedure  
• Turn off all equipment and follow the  
when equipment is not in use.  
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine  
manufacturer’s replacement parts only.  
• Do not alter or modify equipment. Alterations or modifications may void agency approvals  
and create safety hazards.  
• Make sure all equipment is rated and approved for the environment in which you are using it.  
• Use equipment only for its intended purpose. Call your distributor for information.  
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.  
• Do not kink or over bend hoses or use hoses to pull equipment.  
• Keep children and animals away from work area.  
• Comply with all applicable safety regulations.  
6
3A2494D  
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Gun Overview  
Gun Overview  
How the Electrostatic Spray Gun Works  
The air hose supplies air to the spray gun. Part of  
the air operates the alternator turbine and the rest  
of the air atomizes the fluid being sprayed. The  
alternator generates power, which is converted by  
the power cartridge to supply high voltage to the  
gun’s electrode.  
The pump supplies fluid to the fluid hose and gun,  
where the fluid is electrostatically charged as it  
passes the electrode. The charged fluid is attracted  
to the grounded workpiece, wrapping around and  
evenly coating all surfaces.  
3A2494D  
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Gun Overview  
Controls, Indicators, and Components  
The electrostatic gun includes the following  
controls, indicators, and components (see Fig.  
1). For information on Smart guns, also see  
Smart Guns, page 9 .  
Figure 1 Gun Overview  
Item  
Descrip-  
tion  
Purpose  
Item  
H
Descrip-  
tion  
Purpose  
A
Air Swivel 1/4 npsm(m) left-hand thread,  
Inlet  
Fluid Ad-  
justment  
Knob  
Adjusts fluid flow by limiting  
fluid needle travel. Use only  
in low flow conditions, to  
reduce wear.  
for Graco grounded air supply  
hose.  
B
C
D
Fluid Inlet 3/8 npsm(m), for fluid supply  
hose.  
J
ES On-Off Turns electrostatics ON (I) or  
Valve OFF (O).  
Turbine Air Barbed fitting, for supplied  
Exhaust  
exhaust tube.  
K
ES Indica- Lit when ES is ON (I). Color in-  
tor (stan-  
dard gun  
only; for  
dicates alternator frequency.  
See the LED indicator table  
in the Gun Setup Checklist,  
Air Cap  
and  
Nozzle  
See Air Caps and Fluid  
Nozzles, page 68, for avail-  
able sizes.  
Smart gun page 18.  
indica-  
E
F
Electrode  
Needle  
Supplies electrostatic charge  
to the fluid.  
tor, see  
Operating  
Mode,  
Fan Air  
Adjust-  
ment  
Adjusts fan size and shape.  
Can be used to decrease  
pattern width.  
page 9 )  
Valve  
G
Atomizing Restricts air cap air flow.  
Air  
Replace with plug (included)  
if desired.  
Restrictor  
Valve  
8
3A2494D  
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Gun Overview  
Smart Guns  
Voltage Adjustment Switch  
The Smart Gun module displays spraying voltage,  
current, alternator speed, and the voltage setting (low  
or high). It also allows the user to change to a lower  
spraying voltage. The module has two modes:  
The voltage adjustment switch (VA) allows the  
operator to change from low to high voltage.  
• Operating Mode  
• Diagnostic Mode  
Operating Mode  
• The high voltage setting is determined by the  
maximum voltage of the gun and is not adjustable.  
• The low voltage indicator (LO) lights  
when the switch is set to LO. The low  
voltage setting is user adjustable. See  
Bar Graph  
NOTE:  
If the Error display appears, the Smart module  
See Fig. 2, and Table 1 on page 10. The Operating  
Mode displays gun data during normal spraying. The  
display uses a bar graph to show the voltage level in  
kiloVolts (kV) and the current level in microAmperes  
(uA). The bar graph range is from 0 to 100% for each  
value.  
has lost communication with the power supply. See  
Error Display, page 10, for further information.  
If the bar graph LEDs are blue, the gun is ready to  
spray. If the LEDs are yellow or red, the current is  
too high. The fluid may be too conductive, or see  
Electrical Troubleshooting, page 35 for other possible  
causes.  
Hz Indicator  
The Hz indicator functions the same as the ES  
indicator on standard guns. The indicator lights to  
show the alternator speed status, and has three  
colors:  
• Green indicates the alternator speed is correct.  
Figure 2 Smart Gun Module in Operating Mode  
• If the indicator changes to amber after 1 second,  
increase the air pressure.  
• If the indicator changes to red after 1 second,  
reduce the air pressure.  
3A2494D  
9
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Gun Overview  
Error Display  
for your gun. Continue pressing the button until you  
reach the desired setting.  
If the Smart module loses communication with  
the power supply, the Error display appears, the  
Hz indicator turns red, and the Smart module is  
disabled. See Fig. 3, and Table 1 on page 10.  
This can occur in Operating Mode or Diagnostic  
Mode. See Electrical Troubleshooting, page 35.  
Communication must be restored to make the Smart  
module functional.  
NOTE:  
After 2 seconds of inactivity the display will  
return to the Operating Screen.  
NOTE:  
Lock Symbol, page 10.  
The low voltage setting may be locked. See  
NOTE:  
It takes 8 seconds for the Error display to  
appear. If the gun has been disassembled, wait 8  
seconds before spraying to ensure that an Error  
condition has not occurred.  
NOTE:  
If there is no power to the gun, the Error  
display will not appear.  
Figure 4 Low Voltage Setting Screen (Unlocked)  
Lock Symbol  
The low voltage setting may be locked. When locked,  
an image (LK) appears on the screen. See Fig. 5,  
and Table 1 on page 10.  
always  
• When in HI mode, the low voltage setting is  
locked. The lock symbol will appear when the LO  
SET button is pressed.  
• When in LO mode, the lock symbol will  
only  
appear if the lock is enabled. See  
Low Voltage Lock Screen, page 14, to lock or  
unlock the low voltage setting.  
Figure 3 Error Display  
Adjusting the Low Voltage Setting  
The low voltage setting is user adjustable. To access  
the low voltage setting screen when in Operating  
Mode, press the LO SET button (LS) momentarily.  
The screen will display the current low voltage  
setting. See Fig. 4, and Table 1 on page 10. The  
possible ranges are:  
• 85 kV guns: 40–85 kV  
• 60 kV guns: 30–60 kV  
Set the Voltage Adjustment switch (VA) to LO. Press  
the LO SET button repeatedly to increase the setting  
in increments of 5. When the display reaches the  
maximum setting it will return to the minimum setting  
Figure 5 Low Voltage Setting Screen (Locked)  
10  
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Gun Overview  
Table 1 . Key for Figs. 2–9.  
Item  
VA  
Description  
Purpose  
Voltage Adjustment Switch  
Two-position switch sets smart  
gun voltage to low setting (LO) or  
high setting (HI). This switch is  
functional in Operating Mode and  
in Diagnostic Mode.  
LO  
kV  
Low Voltage Mode Indicator  
Voltage (kV) Display  
Lights (blue) when the smart gun  
is set to Low Voltage.  
Displays actual spraying voltage  
of the gun, in kV. In Operating  
Mode, display is a bar graph.  
In Diagnostic Mode, voltage is  
displayed as a number.  
uA  
LS  
Current (uA) Display  
LO SET button  
Displays actual spraying current  
of the gun, in uA. In Operating  
Mode, display is a bar graph.  
In Diagnostic Mode, current is  
displayed as a number.  
Press momentarily to enter the  
Low Voltage Setting screen.  
Press and hold for approximately 5  
seconds to enter or exit Diagnostic  
Mode.  
While in Diagnostic Mode, press  
momentarily to advance through  
screens.  
While on the Low Voltage Lock  
Screen (in Diagnostic Mode),  
press and hold to turn the lock on  
or off.  
LV  
LK  
Low Voltage Display  
Low Voltage Locked  
Displays the low voltage setting  
as a number. The setting can be  
changed. See Fig. 4.  
Appears if the low voltage setting  
is locked. See Fig. 5 and Fig. 9.  
3A2494D  
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Gun Overview  
Item  
LD  
Description  
LO Display  
Purpose  
Appears on the Low Voltage Lock  
Screen. See Fig. 9.  
ER  
VI  
Error Display  
Appears if the Smart module loses  
communication with the power  
supply. See Fig. 3.  
Voltage Indicator  
In Diagnostic Mode, the two top  
right LEDs of the screen light,  
indicating that the value displayed  
is in kV. See Fig. 6.  
CI  
Current Indicator  
In Diagnostic Mode, the two  
bottom right LEDs of the screen  
light, indicating that the value  
displayed is in uA. See Fig. 7.  
AS  
Hz  
Alternator Speed Display  
Alternator Speed Indicator  
In Diagnostic Mode, Hz level is  
displayed as a number. See Fig.  
8.  
In Operating Mode, indicator color  
varies to show the alternator  
speed status:  
• green indicates the alternator  
speed is at the correct level.  
• If the indicator changes to amber  
after 1 second, the alternator  
speed is too low.  
• If the indicator changes to red  
after 1 second, the alternator  
speed is too high. The indicator  
will also turn red if the Error  
display appears.  
In Diagnostic Mode, the indicator  
is green when in the Alternator  
Speed (Hertz) screen.  
12  
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Gun Overview  
Diagnostic Mode  
Diagnostic Mode includes four screens which display  
gun data:  
• Voltage (kiloVolts) Screen  
• Current (microAmperes) Screen  
• Alternator Speed (Hertz) Screen  
• Low Voltage Lock Screen  
NOTE:  
You must be in Operating Mode to adjust the  
low voltage setting; the setting is not adjustable in  
Diagnostic Mode. However, the voltage adjustment  
switch (VA) can be set to HI or LO in Operating Mode  
and in Diagnostic Mode.  
Figure 6 Voltage (kiloVolts) Screen  
To enter Diagnostic Mode, press and hold the LO SET  
(LS) button for approximately 5 seconds. The display  
will go to the Voltage (kiloVolts) Screen, page 13.  
Current (microAmperes) Screen  
The Current (microAmperes) Screen is the second  
screen in the Diagnostic Mode. See Fig. 7, and Table  
1 on page 10. To enter this screen, press the LO  
SET button while in the Voltage (kiloVolts) Screen.  
To advance to the next screen, press the LO SET  
button again.  
To exit Diagnostic Mode, press and hold the LO SET  
button for approximately 5 seconds. The screen will  
return to Operating Mode.  
This screen displays the spraying current of the gun  
as a number (uA), rounded to the nearest 5 uA. The  
two bottom right LEDs (CI) of the display panel light,  
indicating that the Current (microAmperes) Screen  
is displayed. The display is a readout and cannot  
be changed.  
NOTE:  
If the gun is detriggered while in Diagnostic  
Mode, the last screen viewed will be displayed when  
the gun is retriggered.  
NOTE:  
Diagnostic Mode cannot be exited  
Press the LO SET button to advance to the  
Alternator Speed (Hertz) Screen, page 14. Press  
and hold for approximately 5 seconds to return to  
Operating Mode.  
from the Low Voltage Lock Screen. See  
Low Voltage Lock Screen, page 14 for details.  
Voltage (kiloVolts) Screen  
The Voltage (kiloVolts) Screen is the first screen to  
appear after entering Diagnostic Mode. See Fig. 6,  
and Table 1 on page 10. To enter this screen, press  
and hold the LO SET button for approximately 5  
seconds while in the Operating Mode.  
This screen displays the spraying voltage of the  
gun as a number (kV), rounded to the nearest 5 kV.  
The two top right LEDs (VI) of the display panel  
light, indicating that the Voltage (kiloVolts) Screen  
is displayed. The display is a readout and cannot  
be changed.  
Press the LO SET button to advance to the  
Current (microAmperes) Screen, page 13. Press  
and hold for approximately 5 seconds to return to  
Operating Mode.  
Figure 7 Current (microAmperes) Screen  
3A2494D  
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Gun Overview  
Alternator Speed (Hertz) Screen  
Low Voltage Lock Screen  
The Alternator Speed (Hertz) Screen is the third  
screen in the Diagnostic Mode. See Fig. 8, and Table  
1 on page 10. To enter this screen, press the LO SET  
button while in the Current (microAmperes) Screen.  
The Low Voltage Lock Screen is the fourth screen in  
the Diagnostic Mode. See Fig. 9, and Table 1 on  
page 10. To enter this screen, press the LO SET  
button while in the Alternator Speed (Hertz) Screen.  
This screen displays the alternator speed as a 3 digit  
number (AS), rounded to the nearest 10 Hz. The  
display is a readout and cannot be changed. If the  
alternator speed is greater than 999 Hz, the display  
will show 999.  
This screen displays the status of the Low Voltage  
Lock. If the setting is locked, the lock image (LK)  
appears to the left of the Lo display (LD). If the setting  
is unlocked, the lock image does not appear.  
To change the lock status, press and hold the  
LO SET button until the lock image appears or  
disappears. If the lock is set, the image will also  
appear on the Low Voltage Setting Screen when in  
low voltage mode (see Fig. 4).  
The Hz indicator lights green to show that you are  
viewing the Alternator Speed (Hertz) Screen.  
Press the LO SET button to advance to the  
Low Voltage Lock Screen, page 14. Press and hold  
for approximately 5 seconds to return to Operating  
Mode.  
NOTE:  
Diagnostic Mode cannot be exited from this  
screen, because pressing and holding the LO SET  
button is used to turn the lock on or off. To exit,  
press LO SET momentarily to return to the Voltage  
(kiloVolts) Screen, then exit Diagnostic Mode from  
there.  
Figure 8 Alternator Speed (Hertz) Screen  
Figure 9 Low Voltage Lock Screen  
14  
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Installation  
Installation  
Warning Sign  
Mount warning signs in the spray area where they  
can easily be seen and read by all operators. An  
English Warning Sign is provided with the gun.  
Installing and servicing this equipment requires  
access to parts which may cause electric shock  
or other serious injury if work is not performed  
properly.  
Ventilate the Spray Booth  
• Do not install or service this equipment unless  
you are trained and qualified.  
• Be sure your installation complies with local,  
state, and national codes for the installation  
of electrical apparatus in a Class I, Div. I,  
Hazardous Location or a Group II, Zone I  
Explosive Atmosphere Location.  
Provide fresh air ventilation to reduce the risk of fire  
or explosion caused by the buildup of flammable or  
toxic vapors when spraying, flushing, or cleaning  
the gun. Do not operate the gun unless ventilation  
fans are operating.  
• Comply with all applicable local, state, and  
national fire, electrical, and other safety  
regulations.  
Electrically interlock the gun air supply with the  
ventilators to prevent gun operation without  
ventilating fans operating. Check and follow all local,  
state, and national codes regarding air exhaust  
velocity requirements.  
Fig. 10 shows a typical electrostatic air spray system.  
It is not an actual system design. For assistance  
in designing a system to suit your particular needs,  
contact your Graco distributor.  
High velocity air exhaust will decrease the operating  
efficiency of the electrostatic system. Air exhaust  
velocity of 100 ft/min (31 linear meters/minute) should  
be sufficient.  
3A2494D  
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Installation  
Air Supply Line  
Fluid Supply Line  
1. Blow out the fluid line (FL) with air and flush it  
with solvent. Use solvent which is compatible  
with the fluid to be sprayed. Do not connect the  
fluid supply line to the gun fluid inlet yet.  
To reduce the risk of electric shock, the air supply  
hose must be electrically connected to a true earth  
2. Install a fluid regulator (FR) on the fluid line to  
control fluid pressure to the gun.  
Use only Graco Grounded Air Supply  
ground.  
Hose.  
3. Install a fluid filter (FF) near the pump outlet, to  
remove particles and sediment which could clog  
the spray nozzle.  
1. See Fig. 10. Use the Graco Grounded Air Supply  
Hose (AH) to supply air to the gun. The gun air  
inlet fitting has a left-hand thread. The air supply  
hose ground wire (AG) must be connected to a  
true earth ground. Do not connect the air supply  
hose to the gun air inlet yet.  
To reduce the risk of serious injury, including  
splashing fluid in the eyes or on the skin, do  
not operate equipment without the fluid drain  
valve (FD) installed.  
2. Install an air line filter/water separator (AF) on the  
gun air line to ensure a dry, clean air supply to the  
gun. Dirt and moisture can ruin the appearance  
of your finished workpiece and can cause the  
gun to malfunction.  
4. The fluid drain valve (FD) is required in your  
system to assist in relieving fluid pressure in the  
displacement pump, hose, and gun. Triggering  
the gun to relieve pressure may not be sufficient.  
Install a drain valve close to the pump's fluid  
outlet.  
3. Install bleed-type air regulators (PR, GR) on  
the pump and gun air supply lines to control air  
pressure to the pump and gun.  
Trapped air can cause the pump to cycle  
unexpectedly, which can result in serious  
injury, including splashing fluid in the eyes or  
on the skin. Do not operate the equipment  
without the bleed-type air valve (BV) installed.  
4. Install a bleed-type air valve (BV) on the pump  
air supply line. The bleed-type air valve (BV) is  
required in your system to shut off air to the pump  
and relieve air trapped between the valve and  
the pump after the air regulator is shut off. Install  
an additional bleed-type air valve on the main air  
line (MA) to isolate the accessories for servicing.  
5. Install an air bleed valve (BV) on each gun air  
supply line to shut off air to the gun(s) and relieve  
air trapped between the valve and the gun after  
the air regulator is shut off.  
16  
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Installation  
NON-HAZARDOUS AREA  
HAZARDOUS AREA  
Figure 10 Typical Installation  
Typical Installation Key  
Item  
AD  
Description  
Item  
FV  
Description  
Air Line Drain Valve  
Air Filter/Water Separator  
Gun Air Hose Ground Wire  
Fluid Shutoff Valve  
AF  
GR  
MA  
PG*  
PR  
Gun Air Pressure Regulator  
Main Air Supply Line  
Pump Ground Wire  
AG*  
AH*  
Graco Grounded Air Hose (left-hand  
threads)  
Pump Air Pressure Regulator  
Supply Pump  
AL  
Pump Air Line Lubricator  
Pump Bleed-Type Air Shutoff Valve  
Electrostatic Air Spray Gun  
Fluid Drain Valve  
SP  
BV*  
EG  
FD*  
FF  
SV*  
Ventilation Fan Interlock Solenoid Valve.  
NOTE: The solenoid valve is not offered  
as a Graco accessory.  
* These items are required for safe operation. They  
must be purchased separately.  
Fluid Filter  
FL  
Fluid Supply Line  
FR  
Fluid Pressure Regulator  
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Gun Setup  
Gun Setup  
Gun Setup Checklist  
See Fig. 11 to locate the electrostatic gun controls.  
5. Connect the Graco grounded air hose to the gun  
air inlet. The gun air inlet fitting has left-hand  
threads.  
6. Follow all steps under Grounding, page 21.  
7. Follow all steps under  
Reading must be less than 1 megohm.  
8. Verify that the material resistivity meets  
requirements for electrostatic spray. See  
Figure 11 Electrostatic Gun Controls  
1. The gun is shipped with the fluid nozzle and air  
cap installed. Check that the retaining ring is  
tight.  
9. Connect the exhaust tube and secure with the  
clamp provided.  
NOTE:  
To select a different  
size fluid nozzle or air cap, see  
Fluid Nozzle Selection Chart, page 68 and  
Air Cap Selection Chart, page 70. To  
install the nozzle and air cap, see  
10. Connect the fluid hose to the gun fluid inlet.  
2. Turn OFF (O) the ES On-Off switch (J).  
3. Shut off the air bleed valve to the gun.  
11. Flush if needed, see Flushing, page 28.  
12. Position the air cap as desired.  
4. Check gun resistance. See  
Test Gun Resistance, page 31.  
18  
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Gun Setup  
13. Fully open the fan air adjustment valve (F)  
counterclockwise.  
17. Set the gun air regulator to deliver a minimum  
45 psi (0.32 MPa, 3.2 bar) at the gun when  
triggered, to ensure full spraying voltage. See  
the table below.  
Table 2 . Pressure Drop  
Air Hose  
Air Regulator Setting  
in psi (MPa, bar)  
[with gun triggered]  
14. Fully open the fluid adjustment valve (H)  
counterclockwise.  
Length in ft (m)  
(using 5/16 in. [8  
mm] diameter hose)  
15 (4.6)  
25 (7.6)  
50 (15.3)  
55 (0.38, 3.8)  
65 (0.45, 4.5)  
80 (0.56, 5.6)  
18. Check that the ES indicator (K) [Hz indicator on  
Smart guns] is lit. See the following table.  
15. Fully open the atomizing air restrictor valve (G)  
clockwise.  
Table 3 . LED Indicator Colors  
Indicator  
Color  
Description  
Green  
Amber  
Red  
When spraying, the indicator  
should remain green, indicating  
sufficient air pressure to the  
alternator turbine.  
If the indicator changes to amber  
after 1 second, the air pressure  
is too low. Increase air pressure  
until the indicator is green.  
16. Turn ON (I) the ES On-Off switch (J).  
If the indicator changes to red  
after 1 second, the air pressure is  
too high. Decrease air pressure  
until the indicator is green.  
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Gun Setup  
19. Shut off the air to the gun. Turn OFF (O) the ES  
On-Off switch (J).  
22. Spray a test pattern. Check the atomization. If  
over-atomization occurs at minimum pressure,  
adjust the restrictor valve. If atomization is  
inadequate, increase air pressure or decrease  
fluid flow.  
20. Start the pump. Adjust the fluid regulator until the  
stream from the gun travels 8-12 in. (200-300  
mm) before falling off. Typically, if fluid pressure  
is below 5 psi (.04 MPa, 0.4 bar) or above 30 psi  
(0.21 MPa, 2.1 bar), a change of nozzle size is  
recommended.  
23. Adjust the fan air adjustment valve: clockwise for  
a narrower pattern, counterclockwise for a wider  
pattern.  
24. Spray a test piece. Examine the edges  
for coverage. If wrap is poor, see  
Troubleshooting, page 33.  
21. Turn on the air to the gun. Turn ON (I) the ES  
On-Off switch (J).  
20  
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Gun Setup  
Grounding  
Object being sprayed: keep the workpiece hangers  
clean and grounded at all times.  
When operating the electrostatic gun, any  
ungrounded objects in the spray area (people,  
containers, tools, etc.) can become electrically  
charged. Improper grounding can result in static  
sparking, which can cause a fire, explosion, or  
electric shock. Ground all equipment, personnel,  
object being sprayed, and conductive objects  
in or close to the spray area. Resistance must  
not exceed 1 megohm. Follow the grounding  
instructions below.  
All electrically conductive objects or devices in the  
spray area: must be properly grounded.  
The following are minimum grounding requirements  
for a basic electrostatic system (see Figs. 12–15).  
Your system may include other equipment or objects  
which must be grounded. Check your local electrical  
code for detailed grounding instructions. Your system  
must be connected to a true earth ground.  
Fluid and waste containers: ground all fluid and  
waste containers in the spray area. Do not use pail  
liners unless they are conductive and grounded.  
When flushing the spray gun, the container used  
to catch the excess fluid must be electrically  
conductive and grounded.  
Pump/fluid source: ground the pump/fluid source  
by connecting its ground wire to a true earth  
ground.  
Air compressors: ground the equipment according  
to the manufacturer's recommendations.  
All air and fluid lines must be properly grounded.  
Use only grounded hoses with a maximum of 100  
feet (30.5 m) combined hose length to ensure  
grounding continuity.  
Electrostatic Air Spray Gun: ground the gun  
by connecting the Graco Grounded Air Hose  
(AH) to the gun, and connecting the air hose  
ground wire to a true earth ground. See  
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Gun Setup  
The floor of the spray area: must be electrically  
conductive and grounded. Do not cover the floor  
with cardboard or any non-conductive material  
which would interrupt grounding continuity.  
All persons entering the spray area: must wear  
shoes having conductive soles such as leather,  
or wear personal grounding straps. Do not  
wear shoes with non-conductive soles such as  
rubber or plastic. If gloves are necessary, wear  
the conductive gloves supplied with the gun. If  
non-Graco gloves are worn, cut off fingers or palm  
area of gloves to ensure your hand contacts the  
grounded gun handle.  
Key to Figs. 12–15  
Fig. 12  
Operator is grounded through  
bare skin contact with the gun  
handle and conductive shoes. A  
conductive glove can also be used.  
Flammable liquids in the spray area: must be kept  
in approved, grounded containers. Do not use  
plastic containers. Do not store more than the  
quantity needed for one shift.  
Fig. 13  
Object being sprayed is grounded  
through contact with the hanger  
and conveyor system.  
Fig. 14  
Fig. 15  
Gun is grounded through the  
conductive air hose.  
Fluid supply line and source must  
be grounded.  
22  
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Gun Setup  
Figure 12 Ground the Operator  
Figure 13 Ground the Object Being Sprayed  
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Gun Setup  
Figure 14 Ground the Gun  
Figure 15 Ground the Fluid Supply  
24  
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Gun Setup  
Check Gun Electrical Grounding  
5. Make sure the grounded air hose (AH) is  
connected and the hose ground wire is  
connected to a true earth ground.  
Megohmmeter Part No. 241079 (AA-see Fig.  
16) is not approved for use in a hazardous area.  
To reduce the risk of sparking, do not use the  
megohmmeter to check electrical grounding  
unless:  
• The gun has been removed from the hazardous  
area;  
• Or all spraying devices in the hazardous area  
are turned off, ventilation fans in the hazardous  
area are operating, and there are no flammable  
vapors in the area (such as open solvent  
containers or fumes from spraying).  
6. Measure the resistance between the gun handle  
(BB) and a true earth ground (CC). Use an  
applied voltage of 500 minimum to 1000 volts  
maximum. The resistance should not exceed 1  
megohm. See Fig. 16.  
Failure to follow this warning could cause fire,  
explosion, and electric shock and result in serious  
injury and property damage.  
7. If the resistance is greater than 1 megohm, check  
the tightness of the ground connections and be  
sure the air hose ground wire is connected to a  
true earth ground. If the resistance is still too  
high, replace the air hose.  
Graco Part No. 241079 Megohmmeter is available  
as an accessory to check that the gun is properly  
grounded.  
1. Have a qualified electrician check the electrical  
grounding continuity of the spray gun and air  
hose.  
2. Turn OFF (O) the ES On-Off switch.  
3. Turn off the air and fluid supply to the gun. Follow  
the Pressure Relief Procedure, page 27.  
4. Disconnect the fluid hose.  
Figure 16 Check Gun Electrical Grounding  
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Gun Setup  
Check Fluid Resistivity  
Check Fluid Viscosity  
To check fluid viscosity you will need:  
• a viscosity cup  
• a stopwatch.  
To reduce the risk of fire, explosion, or electric  
shock, check the fluid resistivity in a non-hazardous  
area only. Resistance Meter 722886 and Probe  
722860 are not approved for use in a hazardous  
area.  
1. Completely submerge the viscosity cup in  
the fluid. Lift the cup out quickly, starting the  
stopwatch as soon as the cup is completely  
removed.  
2. Watch the stream of fluid coming from the bottom  
of the cup. As soon as there is a break in the  
stream, shut off the stopwatch.  
Failure to follow this warning could cause fire,  
explosion, or electric shock and result in serious  
injury and property damage.  
3. Record the fluid type, elapsed time, and size of  
the viscosity cup.  
Graco Part No. 722886 Resistance Meter and  
722860 Probe are available as accessories to check  
that the resistivity of the fluid being sprayed meets  
the requirements of an electrostatic air spray system.  
4. If the viscosity is too high or too low, contact the  
material supplier. Adjust as necessary.  
Flush Before Using Equipment  
Follow the instructions included with the meter and  
probe. Readings of 25 megohms-cm and above  
provide the best electrostatic results.  
The equipment was tested in fluid at the factory. To  
avoid contaminating your fluid, flush the equipment  
with a compatible solvent before using the equipment.  
A high conductivity kit or high conductivity hose may  
be required for readings less than 25 megohm-cm.  
Guidelines for Abrasive Materials  
Table 4 . Fluid Resistivity Levels  
Megohms-cm  
When spraying abrasive materials, follow these  
guidelines:  
1–7  
7–25  
25–200  
200–2000  
• Order Part No. 24N704 Electrode (blue) for  
abrasive materials.  
High Con- High Con- Best elec- Good elec-  
ductivity  
Kit recom- Kit may be results  
mended needed  
ductivity  
trostatic  
trostatic  
results  
• Size the nozzle properly to reduce fluid pressure  
below 30 psi (0.21 MPa, 2.1 bar), producing an  
8–12 in. (200–300 mm) fluid stream.  
• Operate the gun with the fluid adjustment knob in  
the full flow position at all times. Use an external  
fluid regulator, not the fluid adjustment knob, to set  
the fluid pressure.  
• Use the minimum atomizing and fan air pressures  
possible to achieve a good pattern.  
• Follow all procedures under  
• Inspect the electrode daily and replace if damaged.  
See Electrode Replacement, page 39.  
26  
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Operation  
Operation  
Pressure Relief Procedure  
4. Open the pump drain valve, having a waste  
container ready to catch the drainage. Leave  
the pump drain valve open until you are ready  
to spray again.  
1. Turn OFF (O) the ES On/Off switch.  
5. If the nozzle or hose is completely clogged or  
pressure is not fully relieved, slowly loosen the  
hose end coupling. Now clear the nozzle or hose.  
2. Turn off the air bleed valves to the fluid source  
and to the gun.  
Startup  
3. Trigger the gun into a grounded metal waste  
container to relieve the fluid pressure.  
Follow all steps under Gun Setup Checklist, page 18.  
Shutdown  
1. Flush the gun, see Flushing, page 28.  
2. Follow the Pressure Relief Procedure, page 27.  
3. Hang the gun from its hook, with the nozzle  
pointing down.  
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Maintenance  
Maintenance  
Flushing  
• Flush before changing fluids, before fluid can dry  
in the equipment, at the end of the day, before  
storing, and before repairing equipment.  
2. Follow the Pressure Relief Procedure, page 27.  
• Flush at the lowest pressure possible. Check  
connectors for leaks and tighten as necessary.  
• Flush with a fluid that is compatible with the fluid  
being dispensed and the equipment wetted parts.  
3. Change the fluid source to solvent, or disconnect  
the fluid line and connect a solvent supply line  
to the gun.  
4. Point the gun into a grounded metal pail. Flush  
until clean solvent flows from the gun.  
To reduce the risk of fire, explosion, or electric  
shock, turn OFF (O) the ES On-Off switch before  
flushing the gun.  
NOTICE  
Do not use methylene chloride as a flushing or  
cleaning solvent with this gun as it will damage  
nylon components.  
5. Follow the Pressure Relief Procedure, page 27.  
6. Shut off or disconnect the solvent line.  
1. Turn OFF (O) the ES On-Off switch.  
7. Hang the gun from its hook, with the nozzle  
pointing down.  
8. When ready to spray again, reconnect  
the fluid supply line. Follow the  
Gun Setup Checklist, page 18.  
28  
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Maintenance  
Clean the Gun Daily  
1. Turn OFF (O) the ES On-Off switch.  
5. Remove the air cap.  
2. Flush the gun. See Flushing, page 28.  
6. Clean the air cap, retaining ring, and nozzle with  
a soft brush and compatible solvent.  
3. Follow the Pressure Relief Procedure, page 27.  
4. Clean the outside of the gun with a compatible  
solvent. Use a soft cloth. Point the gun down to  
prevent solvent from entering the gun passages.  
Do not immerse the gun.  
7. If necessary, use a toothpick or other soft tool to  
clean the air cap holes. Do not use metal tools.  
8. Reinstall the air cap. Tighten securely.  
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Maintenance  
Daily System Care  
1. Follow the Pressure Relief Procedure, page 27.  
2. Clean the fluid and air filters.  
4. Clean workpiece hangers. Use non-sparking  
tools.  
3. Check for fluid leaks. Tighten all fittings.  
5. Check the movement of the trigger and valves.  
Lubricate if necessary.  
7. Hang the gun from its hook, with the nozzle  
pointing down.  
30  
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Electrical Tests  
Electrical Tests  
Test Gun Resistance  
Use the following procedures to test the condition  
of the power supply and gun body, and electrical  
continuity between components.  
1. Flush and dry the fluid passage.  
For Model L40T14 and L40T15 guns only:  
Use megohmmeter Part No. 241079 (AA) and an  
applied voltage of 500 V. Connect the leads as  
shown.  
2.  
Test  
the barrel continuity to verify that the metal pin  
in the barrel is properly grounded. Measure  
resistance between the metal pin (GP) and the  
air swivel (21). The resistance should be less  
than 100 ohms. If the resistance is 100 ohms or  
more, replace the gun body.  
Megohmmeter Part No. 241079 (AA-see Fig.  
17) is not approved for use in a hazardous area.  
To reduce the risk of sparking, do not use the  
megohmmeter to check electrical grounding  
unless:  
3. For all guns: Trigger the gun and measure  
resistance between the electrode needle tip (3)  
and the air swivel (21). The resistance should be:  
• 75–120 megohms for 40kV guns  
• 104–148 megohms for 60kV guns  
• 148–193 megohms for 85kV guns  
• The gun has been removed from the hazardous  
area;  
• Or all spraying devices in the hazardous area  
are turned off, ventilation fans in the hazardous  
area are operating, and there are no flammable  
vapors in the area (such as open solvent  
containers or fumes from spraying).  
If outside this range, test the gun  
untriggered. If still outside this range, go to  
Test Power Supply Resistance, page 32. If in range,  
see Electrical Troubleshooting, page 35 for other  
possible causes of poor performance.  
Failure to follow this warning could cause fire,  
explosion, and electric shock and result in serious  
injury and property damage.  
Figure 17 Test Gun Resistance  
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Electrical Tests  
Test Power Supply Resistance  
Test Electrode Resistance  
1. Remove the power supply (11). See Power  
Supply Removal and Replacement, page 43.  
Remove the electrode (3). See  
Electrode Replacement, page 39. Measure  
the resistance between the contact (HH) and the  
electrode wire (GG). The resistance should be 8-30  
megohms. If out of range, replace the electrode.  
2. Remove the alternator (15)  
from the power supply. See  
NOTE:  
If the gun resistance is still out of range after  
3. Measure resistance from the power supply's  
ground strips (EE) to the spring (11a). The  
resistance should be:  
testing the power supply and electrode:  
• Check that the conductive o-ring (4a) is making  
contact with the barrel pin.  
• 60–85 megohms for 40kV guns  
• 86–110 megohms for 60kV guns  
• 130–160 megohms for 85kV guns  
• Check that the power supply spring (11a) is making  
contact with the barrel pin.  
4. If outside this range, replace the  
power supply. If in range, go to  
Test Electrode Resistance, page 32.  
5. If you still have problems, refer to  
Electrical Troubleshooting, page 35 for  
other possible causes of poor performance, or  
contact your Graco distributor.  
6. Be sure the spring (11a) is in place before  
reinstalling the power supply.  
Figure 19 Test Electrode Resistance  
Figure 18 Test Power Supply Resistance  
32  
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Troubleshooting  
Troubleshooting  
Installing and servicing this equipment requires  
access to parts which may cause an electric shock  
or other serious injury if the work is not performed  
properly. Do not install or repair this equipment  
unless you are trained and qualified.  
To reduce the risk of an injury, follow the  
Pressure Relief Procedure, page 27, whenever  
you are instructed to relieve the pressure.  
Check all possible remedies in the Troubleshooting Chart before disassembling the gun.  
Spray Pattern Troubleshooting  
Some spray pattern problems are caused by the improper balance between air and fluid.  
Problem  
Cause  
Solution  
Fluttering or spitting spray.  
No fluid.  
Refill supply.  
Loose, dirty, damaged  
nozzle/seat.  
Clean or replace nozzle, see  
Clean the Gun Daily, page 29, or  
page 38.  
Air in fluid supply.  
Check fluid source. Refill.  
Improper spray pattern.  
Damaged or dirty nozzle or air cap. Clean or replace. See Air Cap and  
Nozzle Replacement, page 38.  
Fluid buildup on air cap or nozzle. Clean. See  
Fan air pressure too high.  
Fluid too thin.  
Decrease.  
Increase viscosity.  
Increase.  
Fluid pressure too low.  
Fan air pressure too low.  
Fluid too thick.  
Increase.  
Reduce viscosity.  
Decrease flow.  
Too much fluid.  
Streaks.  
Did not apply 50% overlap.  
Dirty or damaged air cap.  
Overlap strokes 50%.  
Clean or replace air cap. See  
Clean the Gun Daily, page 29, or  
page 38.  
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Troubleshooting  
Gun Operation Troubleshooting  
Problem  
Cause  
Solution  
Excessive spray fog.  
Atomizing air pressure too high.  
Close restrictor valve part way, or  
decrease air pressure as low as  
possible; minimum 45 psi (0.32  
MPa, 3.2 bar) needed at gun for  
full voltage.  
Fluid too thin, or fluid flow is too  
low.  
Increase viscosity or increase fluid  
flow rate.  
“Orange Peel” finish.  
Atomizing air pressure too low.  
Open atomizing air valve more or  
increase gun air inlet pressure;  
use lowest air pressure necessary.  
Poorly mixed or filtered fluid.  
Fluid too thick.  
Remix or refilter fluid.  
Reduce viscosity.  
Fluid leaks from the fluid packing  
area.  
Worn packings or rod.  
See Packing Rod Repair, page 40.  
Air leaks from the front of the gun. Air valve is not seating properly.  
See Air Valve Repair, page 50.  
Fluid leakage from the front of the Worn or damaged fluid packing  
Replace packing rod (2e)  
or electrode (3). See  
gun.  
rod or electrode.  
Packing Rod Repair, page 40 or  
Electrode Replacement, page 39.  
Worn fluid nozzle seat.  
Replace nozzle (4). See  
page 38.  
Loose fluid nozzle.  
Tighten.  
Damaged nozzle o-ring.  
See Air Cap and Nozzle  
Replacement, page 38.  
Gun does not spray.  
Low fluid supply.  
Add fluid if necessary.  
Dirty or clogged fluid nozzle.  
Clean. See  
Closed or damaged fluid  
adjustment valve.  
Open valve, or see  
Valve Repair, page 49.  
Dirty air cap.  
Misaligned air cap and fluid nozzle. Clean fluid buildup off air cap  
and fluid nozzle seat. See  
Excessive paint wrap back to  
operator.  
Poor grounding.  
See Grounding, page 21.  
Incorrect distance from gun to part. Should be 8–12 in. (200–300 mm).  
34  
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Troubleshooting  
Electrical Troubleshooting  
Problem  
Cause  
Solution  
Poor wrap.  
ES On/Off switch is OFF (O).  
Turn ON (I).  
Gun air pressure too low (ES  
indicator is amber).  
Check air pressure to gun;  
minimum 45 psi (0.32 MPa, 3.2  
bar) needed at gun for full voltage.  
Atomizing air pressure too high.  
Decrease.  
Incorrect distance from gun to part. Should be 8-12 in. (200-300 mm).  
Poorly grounded parts.  
Faulty gun resistance.  
Low fluid resistivity.  
Resistance must be 1 megohm or  
less. Clean workpiece hangers.  
See  
Test Gun Resistance, page 31.  
See  
Fluid leaks from the packing (2c)  
and causes a short.  
See Packing Rod Repair, page 40.  
Faulty alternator.  
See Alternator Removal and  
Replacement, page 44.  
ES or Hz indicator is not lit.  
Operator gets mild shock.  
ES On/Off switch is OFF (O).  
No power.  
Turn ON (I).  
Check power supply, alternator,  
and alternator ribbon cable. See  
Replacement, page 43 and  
Alternator Removal and  
Replacement, page 44.  
Operator not grounded or is near  
ungrounded object.  
See Grounding, page 21.  
Gun not grounded.  
Grounding, page 25, and  
Test Gun Resistance, page 31.  
Operator gets shock from  
workpiece.  
Workpiece not grounded.  
Resistance must be 1 megohm or  
less. Clean workpiece hangers.  
3A2494D  
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Troubleshooting  
Problem  
Cause  
Solution  
Voltage/current display stays red  
(smart guns only).  
Gun is too close to the part being Gun should be 8–12 in. (200–300  
sprayed.  
mm) from the part.  
Check fluid resistivity.  
See  
Dirty gun.  
See Clean the Gun Daily, page 29.  
ES or HZ indicator is amber.  
Alternator speed is too low.  
Increase air pressure until  
indicator is green. To avoid  
over-atomization, use the  
atomizing air restrictor valve to  
reduce the atomizing air to the air  
cap.  
ES or Hz indicator is red.  
Alternator speed is too high.  
Smart module has lost  
Decrease air pressure until  
indicator is green.  
Error display appears and Hz  
indicator is red (Smart guns only). communication with the power  
supply.  
Check for good connections be-  
tween the Smart Module and the  
power supply. See Smart Module  
Replacement, page 51 and  
Replacement, page 43.  
36  
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Repair  
Repair  
Prepare the Gun for Service  
• Only use genuine Graco parts. Do not mix or use  
parts from other Pro Gun models.  
• Air Seal Repair Kit 24N789 is available. The  
kit must be purchased separately. Kit parts are  
marked with an asterisk, for example (6a*).  
Installing and repairing this equipment requires  
access to parts that may cause electric shock or  
other serious injury if the work is not performed  
properly. Do not install or service this equipment  
unless you are trained and qualified.  
• Fluid Seal Repair Kit 24N790 is available. The  
kit must be purchased separately. Kit parts are  
marked with a symbol, for example (2a‡).  
1. Flush the gun. See Flushing, page 28.  
• Check all possible remedies  
in Troubleshooting, page 33 before disassembling  
the gun.  
2. Relieve the pressure. See  
3. Disconnect the gun air and fluid lines.  
• Use a vise with padded jaws to prevent damage  
to plastic parts.  
4. Remove the gun from the worksite. Repair area  
must be clean.  
• Lubricate some packing rod parts (2) and certain  
fluid fittings with dielectric grease (44), as specified  
in the text.  
• Lightly lubricate o-rings and seals with non-silicone  
grease. Order Part No. 111265 Lubricant. Do not  
over-lubricate.  
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Repair  
Air Cap and Nozzle Replacement  
NOTICE  
Trigger the gun while removing the nozzle to help  
drain the gun and prevent any paint or solvent left  
in the gun from entering the air passages.  
nozzle seats in the gun barrel (1/8 to 1/4 turn  
past hand-tight).  
7. Install the air cap (5) and retaining ring (6). Make  
sure the u-cup (6a*) is in place with the lips facing  
forward.  
1. See Prepare the Gun for Service, page 37.  
2. Remove the retaining ring (6) and air cap (5).  
8. See Test Gun Resistance, page 31.  
3. Trigger the gun while removing the fluid nozzle  
(4) assembly with the multi-tool (41).  
The nozzle contact ring (4a) is a conductive  
contact ring, not a sealing o-ring. To reduce  
the risk of sparking or electric shock, do not  
remove the nozzle contact ring (4a) except to  
replace it and never operate the gun without  
the contact ring in place. Do not replace the  
contact ring with anything but a genuine Graco  
part.  
NOTICE  
Use non-silicone grease, Part No. 111265, on  
the small o-ring (4b). Do not over-lubricate. Do  
not lubricate the conductive contact ring (4a).  
4. Make sure the conductive contact ring (4a) and  
the small o-ring (4b) are in place on the nozzle  
(4). Lightly lubricate the small o-ring (4b).  
NOTE:  
The conductive contact ring (4a) may  
show some wear at the point where it makes  
contact with the barrel pin. This is normal and  
does not require replacement.  
Figure 20 Air Cap and Nozzle Replacement  
5. Make sure the electrode needle (3) is finger-tight.  
6. Trigger the gun while installing the fluid nozzle  
(4) with the multi-tool (41). Tighten until the fluid  
38  
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Repair  
Electrode Replacement  
1. See Prepare the Gun for Service, page 37.  
2. Remove the air cap and nozzle. See  
3. Unscrew the electrode (3) with the multi-tool (41).  
NOTICE  
To avoid damaging the plastic threads, be very  
careful when installing the electrode.  
4. Apply low-strength (purple) Loctite® or equivalent  
thread sealant to the electrode and packing rod  
threads. Install the electrode finger-tight. Do not  
overtighten.  
5. Install the fluid nozzle and air cap. See  
6. See Test Gun Resistance, page 31.  
Figure 21 Electrode Replacement  
3A2494D  
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Repair  
Fluid Packing Rod Removal  
Packing Rod Repair  
NOTE:  
1. See Prepare the Gun for Service, page 37.  
You may replace the packing rod as individual  
parts or as an assembly.  
2. Remove the air cap and fluid nozzle. See  
Adjust the Air Flow Lead and Lag  
3. Remove the electrode. See  
Electrode Replacement, page 39.  
NOTE:  
The gun begins emitting air before the fluid  
is discharged and the fluid stops before the air flow  
stops. The packing rod assembly is pre-adjusted at  
the factory for proper air lead and lag. Adjust only  
if necessary, as follows.  
4. Loosen the trigger screws (13) and remove the  
trigger (12).  
5. Remove the packing rod (2), using the multi-tool  
(41). Remove the spring (17).  
1. Remove the spring (17) from the nut (2k).  
6. Check all parts for wear or damage and replace  
if necessary.  
2. Use a hex wrench to hold the end of the packing  
rod. Turn both adjustment nuts (2j, 2k) out to  
increase the lead/lag time for the air flow. The  
recommended adjustment is one half turn and  
not more than one full turn.  
3. Tighten the nuts together to fix them in the new  
position.  
Figure 22 Fluid Packing Rod Removal  
40  
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Repair  
Assemble the Packing Rod  
NOTE:  
Before installing the fluid packing rod into the  
4. Lightly tighten the packing nut (2f). The packing  
nut is properly tightened when there is 3 lb (13.3  
N) of drag force when sliding the packing housing  
(2g) assembly along the rod. Tighten or loosen  
the packing nut as needed.  
gun barrel, make sure the internal surfaces of the  
barrel are clean. Remove any residue with a soft  
brush or cloth. Check the inside of the barrel for  
marks from high voltage arcing. If marks are present,  
replace the barrel.  
5. Install the o-ring (2a‡) on the outside of housing  
(2g). Lubricate the o-ring with non-silicone  
1. Place the packing nut (2f) and seal (2b‡) on the  
fluid rod (2e). Flats on the packing nut must face  
the back of the fluid rod. The seal o-ring must  
face away from the packing nut.  
grease, Part No. 111265. Do not over-lubricate.  
6. Install the spring (17) against the nut (2j) as  
shown.  
2. Fill the inner cavity of the spacer (2h‡) with  
dielectric grease (44). Place the spacer on the  
fluid rod (2e) in the direction shown. Generously  
apply dielectric grease to the outside of the  
spacer.  
7. Install the packing rod assembly (2) into the  
gun barrel. Using the multi-tool (41), tighten the  
assembly until just snug.  
8. Install the electrode. See  
Electrode Replacement, page 39.  
3. Place the fluid packing (2c‡) on the packing rod  
(2e) with its lips facing the front of the rod. Install  
the needle packing (2d‡) with the male end  
toward the fluid packing, then install the housing  
(2g) .  
9. Install the nozzle and air cap. See  
10. Install the trigger (12) and screws (13).  
11. See Test Gun Resistance, page 31.  
Figure 23 Packing Rod  
3A2494D  
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Repair  
Barrel Removal  
Barrel Installation  
1. See Prepare the Gun for Service, page 37.  
1. Be sure the gasket (28*) and grounding spring  
(18) are in place. Make sure the gasket air  
holes are aligned properly. Replace the gasket if  
damaged.  
2. Carefully loosen the nut (N) from the bracket fluid  
fitting (20). Pull the tube (T) out of the fitting.  
Make sure both ferrules (7, 8) and the nut stay  
with the tube.  
2. Make sure the spring (11a) is in place on the tip of  
Liberally  
the power supply (11).  
apply dielectric  
3. Loosen the two screws (27).  
grease (44) to the tip of the power supply. Place  
the barrel (1) over the power supply and onto the  
gun handle (16).  
NOTICE  
To avoid damaging the power supply (11), pull  
the gun barrel (1) straight away from the gun  
handle (16). If necessary, gently move the gun  
barrel from side to side to free it from the gun  
handle.  
3. Tighten the two screws (27) oppositely and  
evenly (about a half turn past snug). Do not  
over-tighten the screws (27).  
4. Assemble the fluid tube (T) into the bracket fitting  
(20). Ensure that the ferrules (7, 8) are in place.  
Tighten the nut (N) securely onto the fitting.  
Make sure the top fitting remains tight.  
4. Hold the gun handle (16) with one hand and pull  
the barrel (1) straight off the handle.  
NOTE:  
If the power supply remains in the barrel,  
5. See Test Gun Resistance, page 31.  
remove the alternator/power supply assembly from  
the barrel.  
Figure 25 Barrel Installation  
Figure 24 Barrel Removal  
42  
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Repair  
Power Supply Removal and  
Replacement  
9. Insert the power supply/alternator assembly in  
the gun handle (16). Make sure the ground strips  
(EE) make contact with the handle. On Smart  
models, align the connector of the 6–pin flexible  
circuit (24) with the socket (CS) at the top of the  
handle. Push the connector securely into the  
socket as you slide the power supply/alternator  
assembly into the handle.  
• Inspect the gun handle power supply cavity for dirt  
or moisture. Clean with a clean, dry rag.  
• Do not expose gasket (28) to solvents.  
1. See Prepare the Gun for Service, page 37.  
2. See Barrel Removal, page 42.  
NOTICE  
Be careful when handling the power supply  
(11) to avoid damaging it.  
3. Grasp the power supply (11) with your hand.  
With a gentle side to side motion, free the power  
supply/alternator assembly from the gun handle  
(16), then carefully pull it straight out. On Smart  
Models only, disconnect the flexible circuit (24)  
from the socket at the top of the handle.  
4. Inspect the power supply and alternator for  
damage.  
5. To separate the power supply (11) from the  
alternator (15), disconnect the 3-wire ribbon  
connector (PC) from the power supply. On Smart  
Models only, disconnect the 6–pin flexible circuit  
(24) from the power supply. Slide the alternator  
up and off the power supply.  
Figure 26 Connect Flexible Circuit  
10. Make sure the gasket (28*), ground spring (18),  
and power supply spring (11a) are in place.  
Assemble the barrel (1) to the handle (16). See  
Barrel Installation, page 42.  
11. See Test Gun Resistance, page 31.  
6. See Test Power Supply Resistance, page 32.  
Replace the power supply if necessary.  
To repair the alternator, see  
To prevent damage to the cable and possible  
interruption of the ground continuity, bend the  
alternator’s 3–wire ribbon cable (PC) upward  
and back, so the bend faces the power supply  
and the connector is at the top.  
7. Smart models only: connect the 6–pin flexible  
circuit (24) to the power supply.  
8. Connect the 3-wire ribbon connector (PC) to the  
power supply. Tuck the ribbon forward, under  
the power supply. Slide the alternator (15) down  
onto the power supply (11).  
Figure 27 Power Supply  
3A2494D  
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Repair  
Alternator Removal and Replacement  
NOTE:  
Replace alternator bearings after 2000 hours  
of operation. Order Part No. 24N706 Bearing Kit.  
Parts included in the kit are marked with a symbol (♦).  
1. See Prepare the Gun for Service, page 37.  
2. Remove the power supply/alternator assembly  
and disconnect the alternator. See Power Supply  
3. Measure resistance between the two outer  
terminals of the 3-wire connector (PC); it should  
be 2.0–6.0 ohms. If outside this range, replace  
the alternator coil (15a).  
4. Using a flat blade screwdriver, pry the clip (15h)  
off the housing (15d). Remove the cap (15f),  
using a thin blade or screwdriver.  
5. If necessary, rotate the fan (15e) so its blades  
clear the four bearing tabs (T) of the housing  
(15d).  
Figure 29 Alternator Cross-Section  
NOTICE  
Do not scratch or damage the magnet (M) or  
shaft (S). Do not pinch or damage the 3–wire  
connector (PC) when disassembling and  
reassembling the bearings.  
7. Hold the coil assembly (15a) on a workbench  
with the fan end facing up. Using a wide blade  
screwdriver, pry the fan (15e) off the shaft (S).  
8. Remove the top bearing (15b2).  
9. Remove the bottom bearing (15b1).  
10. Install the new bottom bearing (15b1♦) on the  
long end of the shaft (S). The flatter side of the  
bearing must face away from the magnet (M).  
Install in the coil (15a) so the bearing blades are  
flush with the surface of the coil.  
Figure 28 Fan Orientation  
6. Push the fan and coil assembly (15a) out the  
front of the housing (15d).  
11. Press the new top bearing (15b2♦) onto the short  
end of the shaft so the bearing blades are flush  
with the surface of the coil (15a). The flatter side  
of the bearing must face away from the coil.  
44  
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Repair  
12. Hold the coil assembly (15a) on a workbench  
with the fan end facing up. Press the fan (15e♦)  
onto the long end of the shaft (S). The fan blades  
must be oriented as shown.  
Ensure that the blades of the bottom bearing  
(15b1♦) align with the tabs.  
15. Seat the coil fully into the housing (15d♦). Secure  
with the clip (15h♦), ensuring that its tabs engage  
the slots in the housing.  
13. Carefully press the coil assembly (15a) into  
the front of the housing (15d♦). The 3–wire  
connector (PC) must be positioned below the  
wider notch (W) of the housing tabs, as shown in  
Fig. 45. Be sure the coil alignment pins (P) are  
positioned as shown in Fig. 44.  
16. Ensure that the o-ring (15g) is in place. Install  
the cap (15f).  
17. Install the alternator on the power supply, and  
install both parts in the handle. See Power  
Supply Removal and Replacement, page 43.  
14. Rotate the fan (15e) so its blades clear the four  
bearing tabs (T) at the back of the housing.  
Figure 30 Alternator  
3A2494D  
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Repair  
Fluid Tube Removal and Replacement  
1. Remove the nut (22) from the bracket (20).  
2. Loosen the fitting (9) to remove the fluid tube  
(14) from the barrel (1).  
3. Apply dielectric grease (44) to the threads of the  
fitting (9) and the o-ring (10). Ensure the ferrules  
(7, 8) are in place.  
NOTE:  
On 40 kV guns, the o–ring (10★) is not  
used, and ferrules (7★) and (8★) are part of the  
top fitting (9).  
NOTE:  
On 60 and 85 kV kV guns, check that the  
sleeve (SL) is in place near the top of the fluid  
tube.  
4. Slide the fitting (9) onto the fluid tube (14) and  
thread the fitting into the barrel (1). Torque to  
25–35 in-lb (2.8–3.9 N•m).  
5. With the ferrules (7, 8) seated to the bracket (20),  
screw the nut (22) securely onto the bracket.  
Make sure the top fitting remains tight.  
Figure 31 Fluid Tube  
46  
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Repair  
Fan Air Adjustment Valve Repair  
1. See Prepare the Gun for Service, page 37.  
8. Reassemble the retaining ring (30d). Unscrew  
the valve stem from the housing until it is stopped  
by the retaining ring.  
2. Place a wrench on the flats of the valve housing  
(30a) and unscrew the valve from the handle  
(16).  
9. Screw the valve assembly (30) into the gun  
handle (16), using a wrench on the flats of the  
housing. Torque to 15 in-lb (1.7 N•m).  
NOTE:  
You may replace the valve as an  
assembly (go to step 9) or replace only the o-ring  
(steps 3–9).  
3. Remove the retaining ring (30d).  
4. Turn the valve shaft (30b) counterclockwise until  
it comes free from the valve housing (30a).  
5. Inspect the o-ring (30c). Remove if damaged.  
6. Clean all parts and inspect for wear or damage.  
NOTE:  
Use non-silicone grease, Part No.  
111265. Do not over-lubricate.  
7. When reassembling the fan air valve (30), lightly  
lubricate the valve threads and screw the shaft  
(30b) fully into the housing (30a) until bottomed.  
Install the o-ring (30c*), lubricate, and unscrew  
the valve stem until the o-ring enters the housing.  
Figure 32 Fan Air Adjustment Valve  
3A2494D  
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Repair  
Atomizing Air Restrictor Valve Repair  
1. See Prepare the Gun for Service, page 37.  
2. Place a wrench on the flats of the valve housing  
(29a) and unscrew the valve from the handle  
(16).  
NOTE:  
You may replace the valve as an  
assembly (go to step 9) or replace only the o-ring  
(steps 3–9).  
3. Unscrew the valve stem (29e). Remove the  
retaining ring (29d).  
4. Turn the valve body (29b) counterclockwise until  
it comes free from the valve housing (29a).  
Figure 33 Atomizing Air Restrictor Valve  
5. Inspect the o-ring (29c). Remove if damaged.  
6. Clean all parts and inspect for wear or damage.  
NOTE:  
Use non-silicone grease, Part No.  
111265. Do not over-lubricate.  
7. When reassembling the atomizing air restrictor  
valve (29), lightly lubricate the o-ring (29c) and  
push the valve body (29b) fully into the housing  
(29a) until bottomed.  
8. Reassemble the retaining ring (29d). Thread the  
valve stem (29e) halfway into the valve body  
(29b).  
9. Align the slot (S) in the valve stem with the rib (R)  
in the gun handle. Screw the valve assembly (29)  
into the gun handle (16), using a wrench on the  
flats of the housing. Torque to 15 in-lb (1.7 N•m).  
NOTE:  
If the atomizing air restrictor valve is not  
desired, install the supplied plug (42).  
Figure 34 Align Valve Stem  
48  
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Repair  
ES On-Off and Fluid Adjustment Valve Repair  
1. See Prepare the Gun for Service, page 37.  
gun air passage and blemish the finish on the  
workpiece.  
2. Loosen the captive screw (26p). Remove the  
valve (26) from the handle.  
4. Clean and inspect parts for damage. Replace  
if necessary.  
3. Lubricate the o-rings (26b* and 26m*) with  
non-silicone grease, Part No. 111265. Do not  
over-lubricate.  
NOTE:  
The protrusion on the retainer plate (26h)  
must point upward.  
NOTE:  
Do not over-lubricate parts. Excessive  
5. Reinstall the valve. Torque the screw (27) to  
15-25 in-lb (1.7-2.8 N•m).  
lubricant on the o-rings can be pushed into the  
Figure 35 ES On-Off and Fluid Adjustment Valve  
3A2494D  
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Repair  
Air Valve Repair  
1. See Prepare the Gun for Service, page 37.  
2. See Barrel Removal, page 42.  
8. Install the air valve (23) and spring (34) into the  
gun handle (16).  
9. Install the ES On-Off Valve. See ES On-Off and  
Fluid Adjustment Valve Repair, page 49.  
3. Remove the screws (13) and trigger (12).  
4. Remove the ES On-Off Valve. See ES On-Off  
and Fluid Adjustment Valve Repair, page 49.  
10. Install the trigger (12) and screws (13).  
11. See Barrel Installation, page 42.  
5. Remove the spring (34).  
6. Push on the front of the air valve shaft to force it  
out the back of the handle. Inspect the rubber  
seal (23a*) and replace if damaged.  
7. Inspect the u-cup (35). Do not remove the u-cup  
unless damaged. If removed, install the new one  
with its lips facing into the gun handle (16). Place  
the u-cup on the shaft of the air valve to help seat  
it in the gun handle.  
Figure 37 Air Valve  
Figure 36 Install U-Cup  
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Repair  
Smart Module Replacement  
If the Error display appears, the Smart Module has  
lost communication with the power supply. Check for  
good connections between the Smart Module and  
the power supply.  
If the module’s LEDs are not lighting, replace the  
module.  
1. See Prepare the Gun for Service, page 37.  
2. Remove the pivot screw (31e), o-ring (31f), and  
ES HI/LO switch (31c) at the bottom left corner of  
the Smart Module cartridge (31a).  
3. Remove the remaining three screws (31d) from  
the cartridge.  
4. Pull the Smart Module out the back of the gun.  
Disconnect the ribbon cable (RC) from the  
connector (GC) in the gun handle.  
Figure 38 Smart Module  
5. Remove the gasket (31b).  
6. Install a new gasket (31b) on the new cartridge  
(31a). Make sure the notched corners of the  
gasket are at the top.  
7. Align the module’s ribbon cable (RC) with  
the gun’s cable (GC) and slide them securely  
together, as shown. Tuck the connected cables  
into the recess of the gun handle. Install the  
module flush to the back of the gun handle.  
Figure 39 Align Ribbon Cables  
8. Install the pivot screw (31e), o-ring (31f), and  
ES HI/LO switch in the bottom left corner of the  
cartridge (31a).  
9. Install the three remaining screws (31d). Torque  
to 7–9 in-lb (0.8–1.0 N•m).  
3A2494D  
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Repair  
Air Swivel and Exhaust Valve  
Replacement  
b. Apply thread sealant to the top threads of the  
swivel. Screw the swivel into the gun handle.  
Torque to 75–85 in-lb (8.4–9.6 N•m).  
1. See Prepare the Gun for Service, page 37.  
2. To replace the air exhaust valve:  
a. Remove the clamp (43) and the exhaust tube  
(36).  
b. Unscrew the swivel (21) from the gun handle  
(16). The swivel is a left-hand thread.  
Remove the bracket (20).  
c. Pull the exhaust valve (19) from the handle  
(16). Inspect the o-ring (19a) and replace if  
necessary.  
d. Install the o-ring (19a*) on the exhaust valve  
(19). Lubricate the o-ring with a light coating  
of non-silicone grease.  
e. Install the exhaust valve (19) in the handle  
(16).  
f. Apply thread sealant to the top threads of the  
swivel (21). Position the bracket (20) and  
screw the swivel into the gun handle (16).  
Torque to 75–85 in-lb (8.4–9.6 N•m).  
Figure 40 Air Inlet Fitting and Air Exhaust Valve  
g. Install the tube (36) and clamp (43).  
3. To replace the air inlet swivel:  
a. Unscrew the swivel (21) from the gun handle  
(16). The swivel is a left-hand thread.  
52  
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Parts  
Parts  
Standard Air Spray Gun Assembly  
Part No. L40T10 40 kV Electrostatic Air Spray Gun, Series A  
Part No. L40T14 40 kV High Efficiency Electrostatic Air Spray Gun, Series A  
Part No. L60T10 60 kV Electrostatic Air Spray Gun, Series A  
Part No. L60T11 60 kV Electrostatic Round Spray Gun, Series A  
Part No. L60T12 60 kV Electrostatic Air Spray Gun, Series A, with 1.2 mm Nozzle  
Part No. L85T10 85 kV Electrostatic Air Spray Gun, Series A  
3A2494D  
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Parts  
Part No. L40T10 40 kV Electrostatic Air Spray Gun, Series A  
Part No. L40T14 40 kV High Efficiency Electrostatic Air Spray Gun, Series A  
Part No. L60T10 60 kV Electrostatic Air Spray Gun, Series A  
Part No. L60T11 60 kV Electrostatic Round Spray Gun, Series A; see Round Spray Assembly, page 55  
Part No. L60T12 60 kV Electrostatic Air Spray Gun, Series A, with 1.2 mm Nozzle  
Part No. L85T10 85 kV Electrostatic Air Spray Gun, Series A  
Ref.  
No.  
1
Part No. Description  
Qty  
Ref.  
No.  
13  
Part No. Description  
Qty  
24N665 BODY, gun; 40 kV gun  
24N666 BODY, gun; 60 kV gun  
24N667 BODY, gun; 85 kV gun  
1
1
1
1
24A445 SCREW, trigger; package of 2  
24N695 TUBE, fluid; 40 kV gun  
1
1
1
14  
24N696 TUBE, fluid, with sleeve; 60 kV  
gun  
24N668 BODY, gun; 40 kV high  
efficiency gun  
See Packing Rod Assembly, page 62  
24N697 TUBE, fluid, with sleeve; 85 kV  
1
1
gun  
24N664 See  
2
3
4
1
1
1
15  
16  
24N651 NEEDLE, electrode  
Alternator Assembly, page 63  
24N751 HANDLE; 40 kV gun  
24N616 NOZZLE, 1.5 mm; includes 4a  
and 4b  
1
1
1
1
1
1
1
1
1
24N752 HANDLE; 60 kV gun  
24N753 HANDLE; 85 kV gun  
185111 SPRING, compression  
197624 SPRING, compression  
249323 VALVE, exhaust  
24N615 NOZZLE, 1.2 mm; includes 4a  
1
1
and 4b  
24N729 NOZZLE, round spray;  
includes 4a and 4b; see  
24N645 O-RING, conductive  
17  
18  
19  
4a  
4b  
5
1
1
1
1
19a* 112085 O-RING  
111507 O-RING; fluoroelastomer  
24N477 AIR CAP  
20  
21  
24N741 BRACKET  
24N626 SWIVEL, air inlet; M12 x 1/4  
npsm(m); left-hand thread  
24N698 NUT  
24N731 AIR CAP, round spray; see  
24N644 RING, retainer; includes 6a  
22  
23  
1
1
1
1
6
1
1
1
2
24N633 VALVE, air  
6a*  
198307 PACKING, u-cup; UHMWPE  
23a* 276733 SEAL, air valve  
7‡★ 111286 FERRULE, front; 40 kV gun  
26  
24N630 See ES On-Off and Fluid  
Adjustment Valve, page 64  
24N740 SCREW, hex socket; sst;  
package of 2  
111286 FERRULE, front; 60 and 85 kV  
guns  
8‡★ 111285 FERRULE, back; 40 kV gun  
27  
1
1
2
111285 FERRULE, back; 60 and 85 kV  
guns  
24N656 FITTING, fluid; 40 kV gun  
24N657 FITTING, fluid; 60 kV gun  
24N658 FITTING, fluid; 85 kV gun  
28*  
29  
24N699 GASKET, barrel  
1
1
24T304 See Atomizing Air Restrictor  
Valve Assembly, page 65  
24N733 For round spray gun only; see  
Assembly, page 65  
9
1
1
1
1
10★ 102982 PACKING, o-ring; 60 and 85 kV 1  
guns only  
30  
24N634 See Fan Air Adjustment Valve  
1
1
Assembly, page 65  
11  
24N659 POWER SUPPLY, 40 kV gun  
24N660 POWER SUPPLY, 60 kV gun  
24N661 POWER SUPPLY, 85 kV gun  
24N979 SPRING  
1
1
1
1
1
24N732 For round spray gun only;  
see Fan Air Adjustment Valve  
Assembly, page 65  
34  
185116 SPRING, compression  
1
1
11a  
12  
35*  
188749 PACKING, u-cup  
24N663 TRIGGER; includes item 13  
54  
3A2494D  
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Parts  
Ref.  
No.  
36  
Part No. Description  
Qty  
1
Ref.  
No.  
46  
Part No. Description  
Qty  
1
185103 TUBE, exhaust; 1/4 in. (6 mm)  
ID (shipped loose)  
24N603 COVER, gun, 40 and 60 kV  
guns; package of 10  
40  
107460 TOOL, wrench, ball end; 4 mm  
1
24N604 COVER, gun, 85 kV guns;  
1
(shipped loose)  
package of 10  
41  
42  
276741 MULTI-TOOL (shipped loose)  
1
47▲  
48▲  
49  
179791 TAG, warning (not shown)  
1
1
1
24N786 PLUG, restrictor (shipped loose; 1  
for use instead of item 29)  
16P802 SIGN, warning (not shown)  
24N730 DIFFUSER, for round  
spray gun only; see  
24N783 HOOK; includes screw  
43  
44  
45  
110231 CLAMP, exhaust tube (shipped  
1
1
1
loose)  
116553 GREASE, dielectric; 1 oz (30  
ml) tube (not shown)  
117824 GLOVE, conductive, medium;  
package of 12; also available  
in small (117823) and large  
(117825)  
50  
1
Round Spray Assembly  
▲ Replacement Danger and Warning labels, tags,  
and cards are available at no cost.  
* These parts are included in Air Seal Repair Kit  
24N789 (purchase separately).  
‡ These parts are included in Fluid Seal Repair Kit  
24N790 (purchase separately).  
NOTE:  
On 40 kV guns, the o–ring (10★) is not used,  
and ferrules (7★) and (8★) are part of the top fitting  
(9).  
3A2494D  
55  
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Parts  
Standard High Conductivity Air Spray Gun Assembly  
Part No. L40T16 40 kV Electrostatic High Conductivity Air Spray Gun, Series A  
Part No. L40T15 40 kV High Efficiency Electrostatic Air Spray Gun, Series A  
Part No. L60T16 60 kV Electrostatic High Conductivity Air Spray Gun, Series A  
Part No. L85T16 85 kV Electrostatic High Conductivity Air Spray Gun, Series A  
56  
3A2494D  
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Parts  
Part No. L40T16 40 kV Electrostatic High Conductivity Air Spray Gun, Series A  
Part No. L40T15 40 kV High Efficiency Electrostatic Air Spray Gun, Series A  
Part No. L60T16 60 kV Electrostatic High Conductivity Air Spray Gun, Series A  
Part No. L85T16 85 kV Electrostatic High Conductivity Air Spray Gun, Series A  
Ref.  
No.  
1
Part No. Description  
Qty  
Ref.  
No.  
23  
Part No. Description  
24N633 VALVE, air  
Qty  
24N665 BODY, gun; 40 kV gun  
24N666 BODY, gun; 60 kV gun  
24N667 BODY, gun; 85 kV gun  
1
1
1
1
1
1
1
23a* 276733 SEAL, air valve  
26  
24N630 See ES On-Off and Fluid  
Adjustment Valve, page 64  
24N740 SCREW, hex socket; sst;  
package of 2  
24N668 BODY, gun; 40 kV high  
efficiency gun  
See Packing Rod Assembly, page 62  
27  
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
28*  
29  
24N699 GASKET, barrel  
1
1
3
24N704 NEEDLE, electrode  
24T304 See Atomizing Air Restrictor  
Valve Assembly, page 65  
4
24N623 NOZZLE; includes 4a and 4b  
24N645 O-RING, conductive  
4a  
4b  
5
30  
24N634 See Fan Air Adjustment Valve  
1
Assembly, page 65  
111507 O-RING; fluoroelastomer  
34  
185116 SPRING, compression  
1
1
1
24N477  
AIR CAP  
35*  
36  
188749 PACKING, u-cup  
6
24N644 RING, retainer; includes 6a  
198307 PACKING, u-cup; UHMWPE  
24N659 POWER SUPPLY, 40 kV gun  
24N660 POWER SUPPLY, 60 kV gun  
24N661 POWER SUPPLY, 85 kV gun  
24N979 SPRING  
185103 TUBE, exhaust; 1/4 in. (6 mm)  
ID (shipped loose)  
6a*  
11  
40  
107460 TOOL, wrench, ball end; 4 mm  
1
1
(shipped loose)  
41  
42  
276741 MULTI-TOOL (shipped loose)  
24N786 PLUG, restrictor (shipped loose; 1  
for use instead of item 29)  
11a  
12  
24N663 TRIGGER; includes item 13  
24A445 SCREW, trigger; package of 2  
43  
44  
45  
110231 CLAMP, exhaust tube (shipped  
1
1
1
loose)  
13  
116553 GREASE, dielectric; 1 oz (30  
ml) tube (not shown)  
117824 GLOVE, conductive, medium;  
package of 12; also available  
in small (117823) and large  
(117825)  
14  
See High Conductivity Fluid Tube  
Assembly, page 67  
24N664 See  
Alternator Assembly, page 63  
24N751 HANDLE; 40 kV gun  
15  
16  
1
1
1
1
1
1
1
1
1
1
24N752 HANDLE; 60 kV gun  
24N753 HANDLE; 85 kV gun  
185111 SPRING, compression  
197624 SPRING, compression  
249323 VALVE, exhaust  
46  
24N603 COVER, gun, 40 and 60 kV  
1
1
guns; package of 10  
24N604 COVER, gun, 85 kV guns;  
package of 10  
179791 TAG, warning (not shown)  
17  
18  
19  
47▲  
48▲  
50  
1
1
1
16P802 SIGN, warning (not shown)  
24N783 HOOK; includes screw  
19a* 112085 O-RING  
20  
21  
24N741 BRACKET  
24N626 SWIVEL, air inlet; M12 x 1/4  
npsm(m); left-hand thread  
▲ Replacement Danger and Warning labels, tags,  
and cards are available at no cost.  
* These parts are included in Air Seal Repair Kit  
24N789 (purchase separately).  
3A2494D  
57  
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Parts  
Smart High Conductivity Air Spray Gun Assembly  
Part No. L60M16 60 kV Electrostatic High Conductivity Air Spray Gun, Series A  
Part No. L85M16 85 kV Electrostatic High Conductivity Air Spray Gun, Series A  
58  
3A2494D  
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Parts  
Part No. L60M16 60 kV Electrostatic High Conductivity Air Spray Gun, Series A  
Part No. L85M16 85 kV Electrostatic High Conductivity Air Spray Gun, Series A  
Ref.  
No.  
1
Part No. Description  
Qty  
Ref.  
No.  
24  
Part No. Description  
Qty  
24N666 BODY, gun; 60 kV gun  
24N667 BODY, gun; 85 kV gun  
See Packing Rod Assembly, page 62  
24N704 NEEDLE, electrode  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
245265 CIRCUIT, flexible  
1
1
26  
24N630 See ES On-Off and Fluid  
Adjustment Valve, page 64  
24N740 SCREW, hex socket; sst;  
package of 2  
2
27  
1
3
4
24N623 NOZZLE; includes 4a and 4b  
24N645 O-RING, conductive  
28*  
29  
24N699 GASKET, barrel  
1
1
4a  
4b  
5
24T304 See Atomizing Air Restrictor  
Valve Assembly, page 65  
111507 O-RING; fluoroelastomer  
30  
31  
24N634 See Fan Air Adjustment Valve  
1
1
24N477  
AIR CAP  
Assembly, page 65  
6
24N644 RING, retainer; includes 6a  
198307 PACKING, u-cup; UHMWPE  
24N660 POWER SUPPLY, 60 kV gun  
24N661 POWER SUPPLY, 85 kV gun  
24N979 SPRING  
24N756 See Smart Module Assembly,  
page 66  
185116 SPRING, compression  
6a*  
11  
34  
1
1
1
35*  
36  
188749 PACKING, u-cup  
185103 TUBE, exhaust; 1/4 in. (6 mm)  
ID (shipped loose)  
11a  
12  
24N663 TRIGGER; includes item 13  
24A445 SCREW, trigger; package of 2  
40  
107460 TOOL, wrench, ball end; 4 mm  
1
(shipped loose)  
13  
41  
42  
276741 MULTI-TOOL (shipped loose)  
1
14  
See High Conductivity Fluid Tube  
Assembly, page 67  
24N664 See  
Alternator Assembly, page 63  
24N754 HANDLE, smart; 60 kV gun  
24N786 PLUG, restrictor (shipped loose; 1  
for use instead of item 29)  
110231 CLAMP, exhaust tube  
15  
1
43  
44  
1
1
1
1
1
1
1
1
1
16  
116553 GREASE, dielectric; 1 oz (30 ml) 1  
tube (not shown)  
117824 GLOVE, conductive, medium;  
package of 12; also available  
in small (117823) and large  
(117825)  
24N755 HANDLE, smart; 85 kV gun  
185111 SPRING, compression  
197624 SPRING, compression  
249323 VALVE, exhaust  
45  
1
17  
18  
19  
46  
24N603 COVER, gun, 60 kV guns;  
1
1
19a* 112085 O-RING  
package of 10  
20  
21  
24N741 BRACKET  
24N604 COVER, gun, 85 kV guns;  
package of 10  
179791 TAG, warning (not shown)  
24A626 SWIVEL, air inlet; M12 x 1/4  
npsm(m); left-hand thread  
24N633 VALVE, air  
47▲  
48▲  
50  
1
1
1
23  
1
1
16P802 SIGN, warning (not shown)  
24N783 HOOK; includes screw  
23a* 276733 SEAL, air valve  
▲ Replacement Danger and Warning labels, tags,  
and cards are available at no cost.  
* These parts are included in Air Seal Repair Kit  
24N789 (purchase separately).  
3A2494D  
59  
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Parts  
Smart Air Spray Gun Assembly  
Part No. L60M10 60 kV Electrostatic Air Spray Gun, Series A  
Part No. L60M12 60 kV Electrostatic Air Spray Gun, Series A, with 1.2 mm Nozzle  
Part No. L85M10 85 kV Electrostatic Air Spray Gun, Series A  
60  
3A2494D  
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Parts  
Part No. L60M10 60 kV Electrostatic Air Spray Gun, Series A  
Part No. L60M12 60 kV Electrostatic Air Spray Gun, Series A, with 1.2 mm Nozzle  
Part No. L85M10 85 kV Electrostatic Air Spray Gun, Series A  
Ref.  
No.  
1
Part No. Description  
Qty  
Ref.  
No.  
21  
Part No. Description  
Qty  
1
24N666 BODY, gun; 60 kV gun  
24N667 BODY, gun; 85 kV gun  
See Packing Rod Assembly, page 62  
24N651 NEEDLE, electrode  
1
1
1
1
1
24N626 SWIVEL, air inlet; M12 x 1/4  
npsm(m); left-hand thread  
24N698 NUT  
22  
23  
1
1
1
1
1
2
3
4
24N633 VALVE, air  
23a* 276733 SEAL, air valve  
24N616 NOZZLE, 1.5 mm; includes 4a  
and 4b  
24  
26  
245265 CIRCUIT, flexible  
24N615 NOZZLE, 1.2 mm; includes 4a  
1
24N630 See ES On-Off and Fluid  
Adjustment Valve, page 64  
24N740 SCREW, hex socket; sst;  
package of 2  
and 4b  
4a  
4b  
5
24N645 O-RING, conductive  
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
27  
1
111507 O-RING; fluoroelastomer  
28*  
29  
24N699 GASKET, barrel  
1
1
24N477  
AIR CAP  
24T304 See Atomizing Air Restrictor  
Valve Assembly, page 65  
6
24N644 RING, retainer; includes 6a  
198307 PACKING, u-cup; UHMWPE  
6a*  
7‡  
8‡  
9
30  
31  
34  
24N634 See Fan Air Adjustment Valve  
1
1
1
Assembly, page 65  
111286  
FERRULE, front  
24N756 See Smart Module Assembly,  
page 66  
185116 SPRING, compression  
111285 FERRULE, back  
24N657 FITTING, fluid; 60 kV gun  
24N658 FITTING, fluid; 85 kV gun  
102982 PACKING, o-ring  
35*  
36  
188749 PACKING, u-cup  
1
1
10  
185103 TUBE, exhaust; 1/4 in. (6 mm)  
ID (shipped loose)  
24N660 POWER SUPPLY, 60 kV gun  
24N661 POWER SUPPLY, 85 kV gun  
24N979 SPRING  
11  
40  
107460 TOOL, wrench, ball end; 4 mm  
1
(shipped loose)  
11a  
12  
41  
42  
276741 MULTI-TOOL (shipped loose)  
1
24N663 TRIGGER; includes item 13  
24A445 SCREW, trigger; package of 2  
24N786 PLUG, restrictor (shipped loose; 1  
for use instead of item 29)  
13  
43  
44  
45  
110231 CLAMP, exhaust tube (shipped  
1
1
1
24N696 TUBE, fluid, with sleeve; 60 kV  
gun  
14  
loose)  
116553 GREASE, dielectric; 1 oz (30  
ml) tube (not shown)  
117824 GLOVE, conductive, medium;  
package of 12; also available  
in small (117823) and large  
(117825)  
24N697 TUBE, fluid, with sleeve; 85 kV  
1
1
gun  
24N664 See  
15  
Alternator Assembly, page 63  
24N754 HANDLE, smart; 60 kV gun  
1
1
1
1
1
1
1
16  
24N755 HANDLE, smart; 85 kV gun  
185111 SPRING, compression  
197624 SPRING, compression  
249323 VALVE, exhaust  
46  
24N603 COVER, gun, 60 kV guns;  
1
1
17  
18  
19  
package of 10  
24N604 COVER, gun, 85 kV guns;  
package of 10  
179791 TAG, warning (not shown)  
47▲  
48▲  
50  
1
1
1
19a* 112085 O-RING  
20 24N741 BRACKET  
16P802 SIGN, warning (not shown)  
24N783 HOOK; includes screw  
▲ Replacement Danger and Warning labels, tags,  
and cards are available at no cost.  
‡ These parts are included in Fluid Seal Repair Kit  
24N790 (purchase separately).  
* These parts are included in Air Seal Repair Kit  
24N789 (purchase separately).  
3A2494D  
61  
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Parts  
Packing Rod Assembly  
Part No. 24N653 40 kV Packing Rod Assembly  
Includes items 2a-2k  
Part No. 24N654 60 kV Packing Rod Assembly  
Includes items 2a-2k  
Part No. 24N655 85 kV Packing Rod Assembly  
Includes items 2a-2k  
Ref.  
No.  
Part No. Description  
Qty  
Ref.  
No.  
Part No. Description  
Qty  
2a‡  
2b‡  
2c‡  
2d‡  
2e  
111316 O-RING  
1
1
1
1
1
2f  
197641 NUT, packing  
1
1
1
1
116905 SEAL  
2g  
185495 HOUSING, packing  
186069 SPACER, packing  
178409 PACKING, fluid  
178763 PACKING, needle  
2h‡  
2j◆  
— — —  
NUT, trigger adjustment (part  
of item 2e)  
24N701  
24N702  
24N703  
ROD, packing, 40 kV guns  
(includes items 2j and 2k)  
— — —  
2k◆  
NUT, trigger adjustment (part  
of item 2e)  
1
1
1
ROD, packing, 60 kV guns  
(includes items 2j and 2k)  
ROD, packing, 85 kV guns  
(includes items 2j and 2k)  
‡ These parts are included in Fluid Seal Repair Kit  
24N790 (purchase separately).  
Parts labeled — — — are not available separately.  
◆ These parts are included in Trigger Adjustment Nut  
Kit 24N700 (purchase separately).  
62  
3A2494D  
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Parts  
Alternator Assembly  
Part No. 24N664 Alternator Assembly  
Ref.  
No.  
Part  
No.  
Description  
Qty  
Ref.  
No.  
Part  
No.  
Description  
Qty  
1
15a  
24N705 COIL, alternator  
1
1
15f  
CAP, housing; part of item  
15d  
— — —  
15b♦  
24N706 BEARING KIT (includes two  
bearings, item 15e fan, and  
one item 15h clip)  
15g*  
110073 O-RING  
1
1
15h♦  
24N709 CLIP; package of 5 (one clip  
included with item 15b)  
15d♦  
15e♦  
24N707 HOUSING; includes item 15f  
1
1
— — —  
FAN; part of item 15b  
* These parts are included in Air Seal Repair Kit  
24N789 (purchase separately).  
Parts labeled — — — are not available separately.  
♦ These parts are included in Bearing Kit 24N706  
(purchase separately).  
3A2494D  
63  
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Parts  
ES On-Off and Fluid Adjustment Valve  
Part No. 24N630 ES On-Off and Fluid Adjustment Valve  
Ref.  
No.  
Part No. Description  
Qty  
Ref.  
No.  
Part No. Description  
Qty  
— — —  
26a  
26b*  
26c  
26f  
HOUSING, valve  
O-RING  
1
4
1
1
2
26h  
26j  
24N631  
24N648  
PLATE, retaining  
1
1
2
1
15D371  
— — —  
KNOB, adjustment, fluid  
O-RING  
PISTON, valve  
26m* 113746  
— — —  
24N649  
— — —  
LEVER, ES on-off  
SCREW, set, socket head  
26p  
SCREW, captive  
26g  
* These parts are included in Air Seal Repair Kit  
24N789 (purchase separately).  
Parts labeled — — — are not available separately.  
64  
3A2494D  
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Parts  
Fan Air Adjustment Valve Assembly  
Atomizing Air Restrictor Valve  
Assembly  
Part No. 24N634 Fan Air Adjustment Valve Assembly  
(shown)  
Part No. 24T304 Atomizing Air Restrictor Valve  
Assembly (shown)  
Part No. 24N732 Fan Air Adjustment Valve Assembly  
(for round spray guns, not shown)  
Part No. 24N733 Atomizing Air Restrictor Valve  
Assembly (for round spray guns, not shown)  
Ref.  
No.  
Part No. Description  
Qty  
Ref.  
No.  
Part No. Description  
Qty  
— — —  
— — —  
— — —  
30a  
30b  
NUT, valve  
1
1
1
1
1
— — —  
— — —  
— — —  
29a  
29b  
HOUSING, valve  
1
1
1
1
1
1
1
1
STEM, valve  
BODY, valve  
STEM, valve; round spray only  
BODY, valve; round spray only  
30c* 111504 O-RING  
30d 24N646 RING, retaining; package of 6  
29c* 111516 O-RING  
29d  
29e  
29f  
118907 RING, retaining  
— — —  
— — —  
— — —  
STEM, valve  
* These parts are included in Air Seal Repair Kit  
24N789 (purchase separately).  
KNOB, shaft; round spray only  
Parts labeled — — — are not available separately.  
29g  
SETSCREW, knob; round  
spray only  
* These parts are included in Air Seal Repair Kit  
24N789 (purchase separately).  
Parts labeled — — — are not available separately.  
3A2494D  
65  
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Parts  
Smart Module Assembly  
Ref.  
No.  
Part No.  
— — —  
Description  
Qty  
Part No. 24N756 Smart Module Assembly  
31a  
CARTRIDGE  
GASKET  
1
1
1
3
1
1
31b  
24P433  
24N787  
— — —  
— — —  
31c  
SWITCH, ES HI/LO  
SCREW  
31d♦  
31e♦  
31f  
SCREW, pivot  
O-RING  
112319  
Parts labeled — — — are not available separately.  
♦ These parts are included in Smart Module Screw  
Kit 24N757 (purchase separately).  
66  
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Parts  
High Conductivity Fluid Tube Assembly  
Part No. 24N627 40 kV High Conductivity Fluid Tube Assembly  
Includes items 14a-14c  
Part No. 24N628 60 kV High Conductivity Fluid Tube Assembly  
Includes items 14a-14c  
Part No. 24N629 85 kV High Conductivity Fluid Tube Assembly  
Includes items 14a-14c  
Ref.  
No.  
Part  
No.  
Description  
Qty  
— — —  
— — —  
— — —  
14a**  
14b**  
14c**  
ADAPTER, bracket, handle  
FERRULE  
1
2
1
NUT, bracket, handle  
** Included in 24N735 HC Adapter Kit.  
Parts labeled — — — are not available separately.  
3A2494D  
67  
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Air Caps and Fluid Nozzles  
Fluid Nozzle Selection Chart  
Fluid Nozzle Performance Charts  
Use the following procedure to select the proper fluid  
nozzle for your application.  
1. For each fluid nozzle chart, find the point on the  
graph corresponding to your desired flow rate  
and viscosity. Mark the point on each graph with  
a pencil.  
To reduce the risk of an injury, follow the  
Pressure Relief Procedure, page 27, before  
removing or installing a fluid nozzle and/or air cap.  
2. The thick vertical line in each graph represents  
the target flow rate for that nozzle size. Find  
the graph that has the marked point closest to  
the thick vertical line. This is the recommended  
nozzle size for your application. Significantly  
exceeding the target flow rate may result in  
lower spray performance due to excessive fluid  
velocity.  
Fluid  
Color  
Black  
Description  
Orifice Size  
mm (in.)  
Nozzle  
Part No.  
24N613  
24N614  
24N615  
24N616  
24N617  
24N618  
24N619  
24N620  
24N621  
24N622  
24N623  
24N624  
24N625  
0.75 (.029)  
1.0 (.042)  
1.2 (.047)  
1.5 (.055)  
1.8 (.070)  
2.0 (.079)  
0.55 (.022)  
0.75 (.029)  
1.0 (.042)  
1.2 (.047)  
1.5 (.055)  
1.8 (.070)  
2.0 (.079)  
For  
standard  
coatings  
3. From the marked point, move across to the  
vertical scale to find the required fluid pressure.  
If the required pressure is too high, use the next  
largest nozzle size. If the fluid pressure is too low  
(< 0.35 bar, 3.5 kPa, 5 psi), use the next smallest  
nozzle size.  
Key to Fluid Nozzle Performance Charts  
With  
hardened  
seat, for  
abrasives  
and  
NOTE:  
gun inlet.  
Fluid pressures are measured at the spray  
Blue  
260 Centipoise Fluid  
160 Centipoise Fluid  
70 Centipoise Fluid  
20 Centipoise Fluid  
metallics  
68  
3A2494D  
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Table 5 . Orifice Size: 0.75 mm (0.030 in.)  
Table 8 . Orifice Size: 1.5 mm (0.059 in.)  
FLUID  
PRES-  
SURE:  
FLUID  
PRES-  
SURE:  
bar,  
psi  
bar,  
psi  
FLUID FLOW:  
oz/min, cc/min  
FLUID FLOW:  
oz/min, cc/min  
Table 9 . Orifice Size: 1.8 mm (0.070 in.)  
Table 6 . Orifice Size: 1.0 mm (0.040 in.)  
FLUID  
PRES-  
SURE:  
FLUID  
PRES-  
SURE:  
bar,  
psi  
bar,  
psi  
FLUID FLOW:  
oz/min, cc/min  
FLUID FLOW:  
oz/min, cc/min  
Table 10 . Orifice Size: 2.0 mm (0.080 in.)  
Table 7 . Orifice Size: 1.2 mm (0.047 in.)  
FLUID  
PRES-  
SURE:  
FLUID  
PRES-  
SURE:  
bar,  
psi  
bar,  
psi  
FLUID FLOW:  
oz/min, cc/min  
FLUID FLOW:  
oz/min, cc/min  
3A2494D  
69  
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Air Cap Selection Chart  
NOTE:  
All air cap pattern shapes and lengths in the  
following chart were measured under the following  
conditions. Pattern shape and length are material  
dependent.  
To reduce the risk of an injury, follow the  
Pressure Relief Procedure, page 27, before  
removing or installing a fluid nozzle and/or air cap.  
Distance to target: 10 in. (254 mm)  
Inlet air pressure: 50 psi (34 kPa, 3.4 bar)  
Fan air: adjusted for maximum width  
Fluid flow rate: 10 oz/min (300 cc/min)  
Part No.  
(color)  
Pattern  
Shape  
Length  
in. (mm)  
Recommended  
Fluid Viscosity, in  
centipoise (cp) at  
70°F (21°C)♦  
Recommended  
Production Rates  
Transfer  
Atomiza- Cleanli-  
Efficiency tion  
ness  
24N438  
(black)  
Round  
end  
15-17  
Light to medium  
Up to 15 oz/min (450 Better  
cc/min)  
Best  
Good  
Good  
(381-432) (20–70 cp)  
24N279  
(black)  
Round  
end  
14-16  
Medium to heavy  
Up to 15 oz/min (450 Better  
cc/min)  
Better  
(356-406) (70–260 cp), and  
high solids (360+ cp)  
24N376  
(black)  
24N276  
(blue)  
Tapered  
end  
17-19  
Light to medium  
Up to 15 oz/min (450 Best  
cc/min)  
Better  
Better  
(432-483) (20–70 cp)  
24N277  
(red)  
24N278  
(green)  
24N274  
(black)  
Tapered  
end  
12-14  
Light to medium  
Up to 15 oz/min (450 Good  
cc/min)  
Good  
Good  
Best  
Best  
(305-356) (20–70 cp)  
24N275  
(black)  
Tapered  
end  
14-16  
Light to medium  
Up to 25 oz/min (750 Best  
(356-406) (20–70 cp), and high cc/min)  
solids (360+ cp),  
aerospace coatings  
24N439  
(black)  
Tapered  
end  
11-13  
For use with 2.0 mm Up to 20 oz/min (600 Good  
Best  
Better  
(279-330) nozzles. Medium to  
heavy (70–260 cp),  
and high solids (360+  
cp)  
cc/min)  
24N477  
(black)  
Round  
end  
15-17  
Light to medium  
Up to 15 oz/min (450 Better  
cc/min)  
Best  
Good  
Good  
(381-432) (20–70 cp)  
24W279  
(green)  
24N453  
(black)  
Round  
end  
14-16  
(356-406) (20–70 cp)  
Light to medium  
Up to 15 oz/min (450 Better  
cc/min)  
Better  
♦ Centipoise = centistokes x fluid specific gravity.  
70  
3A2494D  
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Air Consumption Charts  
Key to Air Consumption Charts  
TEST CONDITIONS:  
gun.  
Fan valve fully open; 85 kV  
5/16 in. x 25 ft (8 mm x  
7.6 m) hose  
5/16 in. x 50 ft (8 mm x  
15.2 m) hose  
Table 11 . 24N438 Air Cap  
Table 13 . 24N439 Air Cap  
AIR CON-  
AIR CON-  
SUMPTION  
SUMPTION  
scfm  
scfm  
WALL PRESSURE  
WALL PRESSURE  
psi  
psi  
Table 12 . 24N376, 24N276, 24N277, and 24N278  
Air Caps  
Table 14 . 24N279 Air Cap  
AIR CON-  
AIR CON-  
SUMPTION  
SUMPTION  
scfm  
scfm  
WALL PRESSURE  
psi  
WALL PRESSURE  
psi  
3A2494D  
71  
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Table 15 . 24N274 Air Cap  
Table 17 . 24N453 Air Cap  
AIR CON-  
AIR CON-  
SUMPTION  
SUMPTION  
scfm  
scfm  
WALL PRESSURE  
psi  
WALL PRESSURE  
psi  
Table 16 . 24N275 Air Cap  
Table 18 . 24N477, 24W279 Air Cap  
AIR CON-  
AIR CON-  
SUMPTION  
SUMPTION  
scfm  
scfm  
WALL PRESSURE  
psi  
WALL PRESSURE  
psi  
72  
3A2494D  
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Repair Kits, Related Manuals, and Accessories  
Gun Part  
No.  
Description  
Manual Description  
Repair Kits Repair Kit Description  
All guns in  
40 kV, 60 kV, and 85 Electrostatic Air  
24N789  
24N790  
24N706  
Air Seal Repair Kit  
this manual. kV Air Spray Guns  
Spray Guns,  
Fluid Seal Repair Kit  
Alternator Bearing Repair Kit  
Instructions-Parts  
Gun Accessories  
Part No.  
105749  
111265  
116553  
24N318  
Description  
Part No.  
Description  
Cleaning Brush.  
24P170  
24P171  
Metal Trigger Kit.  
Four Finger Trigger Kit. To convert  
Pro Xp air spray guns to a four finger  
trigger.  
Non-silicone Lubricant, 4 oz (113 g).  
Dielectric Grease. 1 oz (30 ml)  
Round Spray Kit. To convert a  
standard air spray gun to a round  
spray air cap. See manual 3A2498.  
24P172  
185105  
185493  
112534  
Quick Adjust Valve. For quick  
change of fan size.  
Non-swivel Air Inlet; 1/4–18 npsm(m)  
(left-hand thread)  
24N603  
24N604  
24N636  
24N642  
24N704  
24N758  
Gun Covers. For 40 kV and 60 kV  
guns. Box of 10.  
Air Hose Adapter; 1/4 npt(m) x  
1/4–18 npsm(m) (left-hand thread)  
Gun Covers. For 85 kV guns. Box  
of 10.  
Air Line Quick Disconnect Fitting.  
Low Profile Atomizing Air Restrictor  
Valve  
24N627,  
24N628,  
24N629  
High Conductivity Conversion  
Kits. To convert a standard Pro  
Xp air spray gun to an HC gun.  
See High Conductivity Fluid Tube  
Assembly, page 67.  
Ball Swivel, for gun air inlet. 1/4  
npsm (left-hand thread)  
Electrode Replacement Needle for  
Abrasive Materials. Blue.  
Display Covers. Keeps Smart display  
clean. Package of 5.  
3A2494D  
73  
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Operator Accessories  
Test Equipment  
Part No.  
117823  
117824  
Description  
Part No.  
241079  
Description  
Megohmmeter. 500 V output,  
0.01–2000 megohms. Use for  
ground continuity and gun resistance  
Conductive Gloves, box of 12 (small)  
Conductive Gloves, box of 12  
(medium)  
Not for use in hazardous areas.  
tests.  
117825  
24N520  
Conductive Gloves, box of 12 (large)  
722886  
722860  
245277  
Paint Resistance Meter. Use for fluid  
resistivity test. See manual 307263.  
Not for use in hazardous areas.  
Comfort Grip. Snap-on grip  
increases handle size to reduce  
operator fatigue. Medium size.  
Paint Probe. Use for fluid resistivity  
test. See manual 307263.  
use in hazardous areas.  
24N521  
Comfort Grip. Snap-on grip  
increases handle size to reduce  
operator fatigue. Large size.  
Not for  
Test Fixture, High Voltage Probe,  
and kV Meter. Use to test the  
electrostatic voltage of the gun, and  
the condition of the alternator and  
power supply when being serviced.  
See manual 309455. Also requires  
24R038 Conversion Kit.  
System Accessories  
Part No.  
222011  
16P802  
Description  
Ground Wire and Clamp.  
English Warning Sign. Available at  
no charge from Graco.  
24R038  
Voltage Tester Conversion Kit.  
Converts the 245277 Test Fixture for  
use with the Pro Xp Gun alternator.  
See manual 406999.  
16P798  
16P799  
24N528  
English Daily Care Sign.  
English Setup Sign  
Gun Flush Box Adapter for 60 and  
85 kV guns. To convert existing gun  
flush boxes to hold Pro Xp guns.  
24N529  
24P312  
Gun Flush Box Adapter for 40 kV  
guns. To convert existing gun flush  
boxes to hold Pro Xp guns.  
Gun Washer Kit. To convert existing  
gun washers to clean Pro Xp guns.  
74  
3A2494D  
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Hoses  
Grounded Air Hoses  
100 psi (0.7 MPa, 7 bar) Maximum Working Pressure  
0.315 in. (8 mm) ID; 1/4 npsm(f) x 1/4 npsm(f) left-hand thread  
Part No. Description Part No.  
AirFlex Flexible Grounded Air Hose (Gray)  
Description  
Grounded Air Hose with stainless steel braid  
ground path (Red)  
244963  
244964  
244965  
6 ft (1.8 m)  
15 ft (4.6 m)  
25 ft (7.6 m)  
235068  
235069  
235070  
235071  
235072  
235073  
235074  
6 ft (1.8 m)  
15 ft (4.6 m)  
25 ft (7.6 m)  
36 ft (11 m)  
50 ft (15 m)  
75 ft (23 m)  
100 ft (30.5 m)  
24N736  
25 ft (7.6 m), with 112534 Quick  
Disconnect  
244966  
24N737  
36 ft (11 m)  
36 ft (11 m), with 112534 Quick  
Disconnect  
244967  
24N738  
50 ft (15 m)  
Fluid Hoses  
50 ft (15 m), with 112534 Quick  
Disconnect  
225 psi (1.4 MPa, 14 bar) Maximum Working  
Pressure  
244968  
244969  
75 ft (23 m)  
1/4 in. (6 mm) ID; 3/8 npsm(fbe); nylon; FM approved.  
100 ft (30.5 m)  
Part No.  
215637  
215638  
Description  
25 ft (7.6 m)  
50 ft (15 m)  
Part No.  
Description  
Standard Grounded Air Hose (Gray)  
223068  
223069  
223070  
223071  
223072  
223073  
223074  
6 ft (1.8 m)  
High Conductivity Fluid Hose  
For high conductivity materials.  
15 ft (4.6 m)  
25 ft (7.6 m)  
36 ft (11 m)  
50 ft (15 m)  
75 ft (23 m)  
100 ft (30.5 m)  
For 60 kV guns only.  
100 psi (0.7 MPa, 7 bar) Maximum Working Pressure  
1/4 in. (6 mm) ID; 3/8 npsm(f) x 5/8–20(m); ptfe; FM  
approved.  
Part No.  
24N994  
Description  
26.8 ft (8.2 m)  
0.375 in. (10 mm) ID; 3/8 npsm(f) x 1/4 npsm(f)  
left-hand thread  
24A225  
24A226  
50 ft (15 m)  
75 ft (23 m)  
3A2494D  
75  
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Dimensions  
Dimensions  
Gun Model  
A, in. (mm)  
B, in. (mm)  
C, in. (mm)  
Weight, oz (g)  
L40T10  
L40T14  
L40T15  
L40T16  
L60T10  
L60T11  
L60T12  
L60T16  
L60M10  
L60M12  
L60M16  
L85T10  
L85T16  
L85M10  
L85M16  
8.7 (221)  
8.7 (221)  
8.7 (221)  
8.7 (221)  
9.5 (241)  
8.7 (221)  
9.5 (241)  
9.5 (241)  
9.5 (241)  
9.5 (241)  
9.5 (241)  
10.5 (267)  
10.5 (267)  
10.5 (267)  
10.5 (267)  
9.2 (234)  
9.2 (234)  
9.2 (234)  
9.2 (234)  
9.2 (234)  
9.2 (234)  
9.2 (234)  
9.2 (234)  
10 (254)  
10 (254)  
10 (254)  
9.2 (234)  
9.2 (234)  
10 (254)  
10 (254)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
2.4 (61)  
19.8 (562)  
20.0 (568)  
20.5 (582)  
20.5 (582)  
21.1 (600)  
21.1 (600)  
21.1 (600)  
22.6 (642)  
23.7 (673)  
23.7 (673)  
25.4 (720)  
23.8 (676)  
25.5 (725)  
26.3 (746)  
28.0 (794)  
76  
3A2494D  
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Technical Data  
Technical Data  
Electrostatic Air Spray Guns  
U.S.  
Metric  
Maximum Working Fluid Pressure  
Maximum Working Air Pressure  
Minimum Air Pressure at Gun Inlet  
Maximum Fluid Operating  
Temperature  
100 psi  
100 psi  
45 psi  
120°F  
0.7 MPa, 7.0 bar  
0.7 MPa, 7.0 bar  
0.32 MPa, 3.2 bar  
48°C  
Paint Resistivity Range  
3 megohm/cm to infinity. For a table of electrostatic results at different  
resistance levels, see Check Fluid Resistivity, page 26.  
Air Inlet Fitting  
Fluid Inlet Fitting  
Output Voltage  
1/4 npsm(m) left-hand thread  
3/8 npsm(m)  
Pro Xp40 Models: 40 kV  
Pro Xp60 Models: 60 kV  
Pro Xp85 Models: 85 kV  
125 microamperes  
Maximum Current Draw  
Sound Power (measured per ISO  
Standard 9216)  
at 40 psi: 90.4 dB(A)  
at 0.28 MPa, 2.8 bar: 90.4 dB(A)  
at 100 psi: 105.4 dB(A)  
at 40 psi: 87.0 dB(A)  
at 0.7 MPa, 7.0 bar: 105.4 dB(A)  
at 0.28 MPa, 2.8 bar: 87.0 dB(A)  
Sound Pressure (measured 1 m  
from gun)  
at 100 psi: 99.0 dB(A)  
at 0.7 MPa, 7.0 bar: 99.0 dB(A)  
Wetted Parts  
PEEK, UHMWPE, FEP, PTFE, acetal, nylon, polyethylene  
3A2494D  
77  
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Graco Pro Xp Warranty  
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name  
to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the  
exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months  
from the date of sale, repair or replace any part of the equipment determined by Graco to be defective. However, any  
deficiency in the barrel, handle, trigger, hook, internal power supply, and alternator (excluding turbine bearings) will be  
repaired or replaced for thirty-six months from the date of sale. This warranty applies only when the equipment is  
installed, operated and maintained in accordance with Graco’s written recommendations.  
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage  
or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance,  
negligence, accident, tampering, or substitution of non-Graco component parts. Nor shall Graco be liable for  
malfunction, damage or wear caused by the incompatibility of Graco equipment with structures, accessories,  
equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or  
maintenance of structures, accessories, equipment or materials not supplied by Graco.  
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized  
Graco distributor for verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace  
free of charge any defective parts. The equipment will be returned to the original purchaser transportation prepaid.  
If inspection of the equipment does not disclose any defect in material or workmanship, repairs will be made at a  
reasonable charge, which charges may include the costs of parts, labor, and transportation.  
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED,  
INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A  
PARTICULAR PURPOSE.  
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer  
agrees that no other remedy (including, but not limited to, incidental or consequential damages for lost profits, lost  
sales, injury to person or property, or any other incidental or consequential loss) shall be available. Any action for  
breach of warranty must be brought within two (2) years of the date of sale.  
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND  
FITNESS FOR A PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS  
OR COMPONENTS SOLD BUT NOT MANUFACTURED BY GRACO.  
These items sold, but not manufactured by  
Graco (such as electric motors, switches, hose, etc.), are subject to the warranty, if any, of their manufacturer. Graco  
will provide purchaser with reasonable assistance in making any claim for breach of these warranties.  
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco  
supplying equipment hereunder, or the furnishing, performance, or use of any products or other goods sold hereto,  
whether due to a breach of contract, breach of warranty, the negligence of Graco, or otherwise.  
FOR GRACO CANADA CUSTOMERS  
The Parties acknowledge that they have required that the present document, as well as all documents, notices and  
legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn  
up in English. Les parties reconnaissent avoir convenu que la rédaction du présente document sera en Anglais,  
ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite de ou en rapport,  
directement ou indirectement, avec les procédures concernées.  
Graco Information  
To place an order,  
contact your Graco Distributor or call to identify the nearest distributor.  
or Toll Free: Fax:  
Phone:  
612-623-6921  
1-800-328-0211  
612-378-3505  
All written and visual data contained in this document reflects the latest product information available at the time of publication.  
Graco reserves the right to make changes at any time without notice.  
Original Instructions. This manual contains English, MM 3A2494  
Graco Headquarters:  
Minneapolis  
International Offices:  
Belgium, China, Japan, Korea  
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS, MN 55440-1441 • USA  
Copyright 2012, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.  
Revision D, June 2014  
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