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
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II 2 G
EEx 0.24 mJ T6
FM12ATEX0068
EN 50050
Ta 0°C – 50°C
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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
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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
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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
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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.
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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
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
Air Cap
and
Nozzle
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
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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
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
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.
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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
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:
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
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.
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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
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
and hold for approximately 5 seconds to return to
Operating Mode.
from the Low Voltage Lock Screen. See
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
and hold for approximately 5 seconds to return to
Operating Mode.
Figure 7 Current (microAmperes) Screen
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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
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.
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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.
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
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.
12. Position the air cap as desired.
4. Check gun resistance. See
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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
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
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
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.
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.
Shutdown
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.
• 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.
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
28
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Maintenance
Clean the Gun Daily
1. Turn OFF (O) the ES On-Off switch.
5. Remove the air cap.
6. Clean the air cap, retaining ring, and nozzle with
a soft brush and compatible solvent.
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
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
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
Remove the electrode (3). See
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
5. If you still have problems, refer to
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
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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
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
Air Cap and Nozzle Replacement,
page 38.
Air in fluid supply.
Check fluid source. Refill.
Improper spray pattern.
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
Air Cap and Nozzle Replacement,
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.
Air leaks from the front of the gun. Air valve is not seating properly.
Fluid leakage from the front of the Worn or damaged fluid packing
Replace packing rod (2e)
or electrode (3). See
gun.
rod or electrode.
Worn fluid nozzle seat.
Replace nozzle (4). See
Air Cap and Nozzle Replacement,
page 38.
Loose fluid nozzle.
Tighten.
Damaged nozzle o-ring.
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
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.
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
See
Fluid leaks from the packing (2c)
and causes a short.
Faulty alternator.
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
Power Supply Removal and
Alternator Removal and
Operator not grounded or is near
ungrounded object.
Gun not grounded.
Operator gets shock from
workpiece.
Workpiece not grounded.
Resistance must be 1 megohm or
less. Clean workpiece hangers.
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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.
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
Power Supply Removal and
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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‡).
• Check all possible remedies
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.
2. Remove the retaining ring (6) and air cap (5).
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
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
Figure 21 Electrode Replacement
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Repair
Fluid Packing Rod Removal
Packing Rod Repair
NOTE:
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
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
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).
Figure 23 Packing Rod
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Repair
Barrel Removal
Barrel Installation
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,
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.
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
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
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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 (♦).
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
14. Rotate the fan (15e) so its blades clear the four
bearing tabs (T) at the back of the housing.
Figure 30 Alternator
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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
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
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Repair
Atomizing Air Restrictor Valve Repair
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
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
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Repair
Air Valve Repair
8. Install the air valve (23) and spring (34) into the
gun handle (16).
3. Remove the screws (13) and trigger (12).
10. Install the trigger (12) and screws (13).
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
50
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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.
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).
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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).
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
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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. 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
24N697 TUBE, fluid, with sleeve; 85 kV
1
1
gun
24N664 See
2
3
4
1
1
1
15
16
24N651 NEEDLE, electrode
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
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
24N733 For round spray gun only; see
Atomizing Air Restrictor Valve
9
1
1
1
1
10★ 102982 PACKING, o-ring; 60 and 85 kV 1
guns only
30
1
1
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;
34
185116 SPRING, compression
1
1
11a
12
35*
188749 PACKING, u-cup
24N663 TRIGGER; includes item 13
54
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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).
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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
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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
24N740 SCREW, hex socket; sst;
package of 2
24N668 BODY, gun; 40 kV high
efficiency gun
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
4
24N623 NOZZLE; includes 4a and 4b
24N645 O-RING, conductive
4a
4b
5
30
1
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
24N664 See
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).
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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
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
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
111507 O-RING; fluoroelastomer
30
31
1
1
24N477
AIR CAP
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
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
24N664 See
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
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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
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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
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
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
6
24N644 RING, retainer; includes 6a
198307 PACKING, u-cup; UHMWPE
6a*
7‡
8‡
9
30
31
34
1
1
1
111286
FERRULE, front
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
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
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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
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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
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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
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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
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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
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Air Caps and Fluid Nozzles
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
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
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Air Caps and Fluid Nozzles
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
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Air Caps and Fluid Nozzles
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
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
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Air Caps and Fluid Nozzles
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
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Air Caps and Fluid Nozzles
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
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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.
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
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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
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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
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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
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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
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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