Instructions
GBL 7500 Box Lubricator
Pump
GBL Shaft Rotation/Low Level
Alarm Pump
3A2257C
EN
GBL 7500 Box Lubricator Pump: Fully enclosed, self-lubricating, precision, metering pump
capable of pumping small flows of either mineral or synthetic oil to machinery injection
points. For professional use only.
GBL Shaft Rotation/Low Level Alarm Pump: Fully enclosed, self-lubricating, precision,
alarm pump capable of sensing shaft rotation and oil low level. For professional use only.
3/16” models: 7500 psi (51.7 MPa, 517 bar) Maximum Working Pressure
1/4” models: 6000 psi (41.4 MPa, 414 bar) Maximum Working Pressure
3/8” models: 3500 psi (24.1 MPa, 241 bar) Maximum Working Pressure
Alarm Pump: 200 psi (1.4 MPa, 14 bar) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
Models:
Suction Models
•
•
•
24J391 - 3/16”
24J392 - 1/4”
24J393 - 3/8”
Gravity Models
•
•
•
24J394 - 3/16”
24J395 - 1/4”
24J396 - 3/8”
Pressure Models
•
•
•
24J397 - 3/16”
24J398 - 1/4”
24J399 - 3/8”
Suction Model Shown
Alarm Pump Model
24K466
•
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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 system compo-
nent. See Technical Data in all equipment manuals.
•
Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data 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.
Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufac-
turer’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.
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 lim-
ited to:
•
•
Protective eye wear, and hearing protection.
Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer
3A2257C
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Warnings
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
d
I
e
f
b
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop pumping and before
cleaning, checking or servicing the equipment.
c
1. Stop lube pump.
2. If installed, close oil supply valve located upstream
from pump.
a
FIG. 1
1. Ensure the pump mounting surface on the reservoir
cover is clean. Clean as needed.
3. If installed, open drain valve located downstream
from the pump.
2. Align gasket (a) with opening on the top of the reser-
voir cover making sure holes (b) on either end of the
gasket match mounting holes (c) in reservoir cover
(FIG. 1).
4. Slowly crack open fluid line fittings to relieve pres-
sure.
Installing the Pump
NOTE: Alarm Pumps Only - For optimum perfor-
mance, mount alarm pump in location furthest from
drive motor.
Grounding
•
•
•
For Gravity and Pressure Fed pumps, skip Step
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current.
Ensure the reservoir is properly grounded as the pump
is grounded through the mounting screws.
3. For Suction Fed Pumps install pump inlet strainer:
a. Check length of suction tube. If it is too long to
fit in the reservoir, use a pliers to break off the
Mounting Pump
NOTE:
•
•
•
Ensure box and lube system are sized appropriately
for the selected pressure.
Ensure an appropriate pressure relief device, suit-
able for your application, is installed in the system.
Inspect your box lubricator and replace any dam-
naged or worn components.
4
3A2257C
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Setup
Setup
NOTICE
Any pressure applied to the pump inlet has the potential
to cause unrestricted flow from the pump outlet even in
a pump that is at rest or adjusted for zero stroke. To pre-
vent this from happening, install a check valve of a com-
parable pressure rating at the pump outlet.
NOTE: The internal “discharge check valve” does not
have a spring and is rated at zero psi.
a
I
FIG. 2
1. Expel all air from pump and relieve pressure (page
b. For all installations (whether the tube needs to
be trimmed or can be used without trimming),
press strainer onto end of the suction tube until
4).
NOTE:
•
Do not connect the oil line to the pump outlet or
lube point until all air has been expelled.
•
•
Use filtered oil when priming the pump.
Filter oil with minimum 25 micron strainer.
Machine requirements may require a higher
cleanliness level.
•
Maximum allowable inlet pressure:
- Pressure Fed Pump: 100 psi (0.69 MPa, 6.9
bar)
- Gravity Fed Pump With Sight Glass: 10 psi
(0.07 MPa, 0.7 bar)
•
Minimum required inlet pressure for priming:
FIG. 3
- Pressure Fed Pump: 1 psi (0.007 MPa, 0.07
bar)
4. Orient pump so the roller bearing on the bottom of
the pump is aligned with the cam inside the reser-
voir.
- Gravity Fed Pump: N/A
- Suction Fed Pump: N/A
- Alarm Pump: N/A
5. Install pump on the reservoir by aligning the holes
(d) on either end of the pump with the mounting
holes (c) in the reservoir cover (FIG. 1).
2. Prime the pump using the procedure described in
the following section that relates to your pump
model.
6. Install washers (f) and bolts (e) and wrench tighten
them securely. Torque bolts as recommended in
your reservoir instruction manual.
3A2257C
5
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Setup
NOTE: In the following instructions, the fill line refers to
the inlet line.
1
5
3
1
5
6
2
3
6
2
FIG. 5
1. Remove and discard the sight well plug (1) and out-
let plug (5).
4
2. Fill the sight well (2) to the top with appropriately fil-
tered oil.
FIG. 4
3. Operate the hand priming assembly (3) until the oil
1. Remove the sight well plug (1) and outlet plug (5).
Discard outlet plug (5).
4).
2. Fill the sight well (2) to the top with appropriately fil-
tered oil.
4. Apply thread sealant (user supplied) to fill line fitting.
5. Connect fill line to sight well (2), taking care to not
allow any thread sealant into the sight well.
3. Operate the hand priming assembly (3) until the oil
level drops below the end of the drip tube (4).
6. Torque fill line fitting to 35 + 5 in. lbs (3.95 + 0.6
N.m).
4. Apply thread sealant (user supplied) to sight well
plug (1).
7. If installed, open oil supply valve located upstream
from the pump.
5. Replace the sight well plug (1), taking care to not
allow any thread sealant into the sight well (2).
8. Continue to hand prime until oil expelled from outlet
(6) is free of air.
6. Torque sight well plug (1) to 35 + 5 in. lbs (3.95 + 0.6
N.m).
expelled.
7. Continue to hand prime until oil expelled from the
outlet (6) is free of air.
8. If all oil is evacuated from sight well (2), repeat steps
expelled.
6
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Setup
3
NOTE: In the following instructions, the fill line refers to
the inlet line.
5
1
6
3
1
2
2
FIG. 6
1. Remove and discard the inlet plug (1) and outlet
plug (5).
2. Apply thread sealant (user supplied) to fill line fitting.
3. Connect fill line to inlet (2).
FIG. 7
4. Torque fill line fitting to 85 + 10 in. lbs (9.60 + 1.13
N.m).
1. Remove the sight well plug (1).
2. Fill the sight well (2) to the top with appropriately fil-
tered oil.
5. If installed, open oil supply valve located upstream
from the pump.
3. Apply thread sealant (user supplied) to sight well
plug (1).
6. Operate the hand priming assembly (3) until the oil
expelled from the outlet (6) if free of air.
4. Replace the sight well plug (1), taking care to not
allow any thread sealant into the sight well (2).
5. Torque sight well plug (1) to 35 + 5 in. lbs (3.95 + 0.6
N.m).
3A2257C
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Setup
3. After startup, ensure sensor is activating correctly.
Connecting Lube Lines to Pump: Suction,
Gravity and Pressure Fed Pump Models
Only
Adjusting the Pump
NOTE: The lube line refers to the outlet line supplying
lubricant to the lubrication points.
I
1. Apply thread sealant (user supplied) to lube line fit-
ting.
Pump volume is controlled by an external adjusting
the length of the piston stroke which changes the pump
discharge volume.
3. Torque lube line fitting to 50 + 5 in. lbs (5.65 + 0.6
N.m).
If inst
8
9
6
FIG. 9
FIG. 8
4. If installed, close the drain valve, located down-
stream from the pump.
•
•
Counterclockwise - increases discharge volume
(drops per stroke)
Clockwise - decreases discharge volume (drops
per stroke)
5. Hand prime the pump until clean, air-free oil is flow-
ing through the lube line.
6. Connect the lube line to the lube point.
7. After startup, adjust individual pumps to meet
required flow rates. See Adjusting the Pump, page
Alarm Models Only: Installing Pressure
Sensor (see Alarm Pump, page 17)
1. Apply thread sealant (user supplied) to pressure
sensor.
7).
NOTE: Sensor output will open at 100 - 200 psi
(6.89 bar, 0.68 MPa).
8
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Setup
3. For Suction Fed and Gravity Fed models only:
With the lubricator operating, count the drops from
the drip tube (4) falling into the sight well (2) for one
minute.
Calculating Output Capacity
The number of drops observed falling in the sight well
equals the amount of oil discharged by the pump. The
pump volume can be adjusted using the adjusting screw
the Pump.)
Calculating Pints per Day
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Calculating Minimum or Maximum Pump Output
Capacity in Pints per Day
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FIG. 10
* Minimum and Maximum drops per stroke listed in Specifications,
The number of drops seen falling in the sight well equals
the amount of oil discharged by the pump. See Specifi-
drops to volumetric output.
Example:
The following example calculates the maximum and
minimum flow for a 1/4 inch pump model with an electric
motor and 300:1 gear ratio.
For Pressure Fed models only: Measure the output
volume at the lube point.
To calculate the Maximum Flow:
4. If any further adjustment is necessary, repeat Steps
1725 RPM
Max 12 drops
per stroke
1440 min.
X
X
300:1 Gear Ratio
Max 6.88
Pints/day
5. Once the pump is adjusted to the proper specifica-
=
14438(Number of Drops in a Pint)
To calculate the Minimum Flow:
NOTE: Piston stroke length set near zero may cause an
inconsistent flow.
Replace the maximum 12 drops per stroke (used in the
equation above) with the minimum 2 drops per stroke =
1.17 minimum pints per day.
3A2257C
9
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Specifications
Specifications
Table 1
Drops per Stroke Table Section of Table Applies to Suction and Gravity Fed Models Only
1, 2
Piston Diameter
Max Outlet Pressure†
Drops/Stroke
Cubic Inch/Stroke
Cubic cm/Stroke
inches
mm
psi
MPa
bar
Min*
Max
Min*
Max
Min*
Max
3/16
1/4
4.76
6.35
9.53
7500
6000
3500
51.7
41.4
24.1
517
414
241
0
0
0
7
0
0
0
0.014
0.024
0.054
0
0
0
0.229
0.393
0.885
12
27
3/8
* Pump adjusted to zero stroke
•
•
•
Allowable viscosity range independent of temperature: 80-5000 SUS.
Strokes/Minute - Maximum - 50; Minimum - 3
Stroke Length - Maximum 1/2 inch (12.7 mm)
† Refer to your manufacturer’s specific instruction manuals to ensure your box and lubrication system are rated for
the selected pressure.
1
Based on 500 SUS oil at 70°F ambient. Heavier oil will produce fewer but larger drops.
2
When approaching maximum outputs, some oils will stream rather than form drops in sight glass.
Table 2
Fluid Measurement Conversion Data
Fluid Measurement Conversion Data
(NOTE: All measurements are approximate values only)
# of Drops
1 drop
14,438 drops
US Measurement
0.002 cubic inch
1 pint
Metric Measurement
0.033 cubic centimeter (cc)
0.47 Liter (l)
28.875 cu. inch 1 pint
0.47 Liter (l)
500 drops
10 drops/minute 1 pint/24 hours
1 cubic inch
16.39 cubic centimeter (cc)
0.47 Liter (l)/24 hours
1 cubic centimeter (cc)
30 drops
0.061 cubic inch
10
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Troubleshooting
Troubleshooting
I
Problem
Cause
Solution
Pump stroke is adjusted to zero.
Adjust pump stroke for desired out-
put. See page 8.
Pump outlet is plugged.
Clean/flush pump outlet.
Pump does not flow
Outlet check valve damaged.
Replace pump.
Pump inlet check ball and/or seat is
damaged or worn.
Pump stroke is adjusted to minimal
travel.
Adjust pump stroke for desired out-
put. See page 8.
Pump has low flow
Pump inlet check ball and/or seat is
damaged or worn.
Replace pump.
Replace pump.
Outlet check valve damaged.
Piston and bore are worn.
Pump has low discharge pressure
Pump inlet check valve and/or seat
are damaged or worn.
Inlet pressure exceeds outlet check Reduce inlet pressure to below out-
pressure.
let check pressure.
Fluid flow from pump outlet when
pump is not running
Pump outlet check ball and/or seat
is damaged or worn.
Replace pump.
Possible debris in inlet check
Replace pump.
Pump inlet check ball and/or seat is
damaged or worn
Sight well fills with oil*
Sight well runs dry*
Piston and bore are worn
Restriction in Drip or Suction tube
Air leak in sight well
Replace pump.
Pump air bound
Follow Setup section appropriate for
Sight well remains constant and no
lubricant drips from tube
Pump regulation set too low
Camshaft speed too slow
Increase pump regulation.
Increase camshaft speed (see Table
Cloudy or broken sight glass (Suc-
tion or Gravity Fed Pumps only)
NA
Replace sight glass using GBL7500
Sight Glass Replacement Kit
24T306. See Maintenance, page
12.
* Oil level in sight well will rise and fall during normal operation. If condition persists refer to Cause/Solution sections.
3A2257C
11
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Maintenance
Maintenance
5. Torque sight well plug (1) to 35 + 5 in. lbs (3.95 + 0.6
N.m).
I
Sight Well Runs Dry
1
Should the oil level in the sight well (2) fall below the
pump body surface:
1. Remove the sight well plug (1).
2. Allow the pump to continue to operate and manually
fill the sight well (2) with filtered oil to below the end
of the drip tube (4).
2
3. Replace the sight well plug (1).
4. Torque sight well plug (1) to 35 + 5 in. lbs (3.95 + 0.6
N.m).
Sight Glass Replacement Kit
To replace a cloudy or broken sight glass in suction or
gravity fed pumps, order GBL7500 Sight Glass Replace-
ment Kit 24T306. See instruction manual 332560
included with Kit 24T306 for repair and replacement
instructions.
Custom Socket Tool 16Y532
4
Used with the GBL7500 Sight Glass Replacement Kit for
removing, tightening and torquing the Sight Glass Body
(5). See instruction manual 332560 included with Kit
24T306 for repair and replacement instructions.
FIG. 11
Sight Well Fills With Oil
The oil level in the sight well (2) will rise and fall slightly
during pump operation. Should the oil level in the sight
well rise above the drip tube (4):
1. Remove the sight well plug (1).
2. Allow the pump to continue to operate until the oil
level has dropped below the drip tube (4).
3. Clean sight well plug threads (1). Apply thread seal-
ant (user supplied) to sight well plug.
4. Replace the sight well plug (1), taking care to not
allow any thread sealant into the sight well (2).
12
3A2257C
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Technical Data
Technical Data
Suction, Gravity Pressure Fed Box Lubricator Pump or Shaft Rotation Alarm Pump
Maximum Working Pressure
All 3/16” Piston Models
All 1/4” Piston Models
All 3/8” Piston Models
Alarm Pump*
US
Metric
7500 psi
6000 psi
3500 psi
200
51.7 MPa, 517 bar
41.4 MPa, 414 bar
24.1 MPa, 241 bar
1.4 PMa, 14 bar
Inlet Size
Gravity Fed Models
Pressure Fed Models
Outlet Size (Suction, Gravity, Pressure Fed Models)
Dimensions
1/8” - 27 NPTF
1/4” - 18 NPTF
1/8” - 27 NPTF
page 14
Weight
Suction Models
2.6 lbs
1.18 kg
Gravity Models
2.7 lbs
1.22 kg
Pressure Models
2.7 lbs
1.22 kg
Alarm Pump
4.8 lbs
2.18 kg
Temperature Rating
Wetted Parts
-20°F to 140F°
-29°C to 60°C
carbon steel, stainless steel, aluminum, PTFE, Fluoro-
elastomer, pyrex
* Sensor output will open at 100-200 psi (0.68 MPa, 6.89 bar).
3A2257C
13
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Technical Data
Pump Dimensions
Dimension
Inches
3.10
mm
A
B
C
76.20
50.04
12.70
1.97
0.50
Pump Min. 2.58
Pump Max. 3.18
Pump Min. 65.53
Pump Max.78.23
D
E
F
5.37
136.40
Min. 4.14
Max 4.90
Min. 105.20
Max 124.50
G
H
J
1.50
0.50
0.50
0.39
0.92
0.28
5.40
3.85
10.13
38.10
12.70
12.70
9.90
See Detail A
K
L
23.37
7.11
M
N
P
R
137.20
97.79
257.18
Detail A
K
L
E
F Max
F Min
G
M
H
J
14
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Graco Standard 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. 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.
Phone: 612-623-6928 or Toll Free: 1-800-533-9655, Fax: 612-378-3590
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 3A2257
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.
Revised December 2013
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