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.
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, 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.
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 component. 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.
Warnings Pressure Relief Procedure Follow the Pressure Relief Procedure whenever you see this symbol. d e I 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. b f c 1. Stop lube pump. 2. If installed, close oil supply valve located upstream from pump.
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 prevent this from happening, install a check valve of a comparable pressure rating at the pump outlet. NOTE: The internal “discharge check valve” does not have a spring and is rated at zero psi. a FIG. 2 b.
Setup Suction Fed Models (FIG. 4) Gravity Fed Models (FIG. 5) NOTE: In the following instructions, the fill line refers to the inlet line. 1 5 3 5 6 1 3 6 2 2 FIG. 5 4 FIG. 4 1. Remove and discard the sight well plug (1) and outlet plug (5). 2. Fill the sight well (2) to the top with appropriately filtered oil. 1. Remove the sight well plug (1) and outlet plug (5). Discard outlet plug (5). 3.
Setup Pressure Fed Models (FIG. 6) Alarm Pump Models (FIG. 7) 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). 4. Torque fill line fitting to 85 + 10 in. lbs (9.60 + 1.13 N.m). 5. If installed, open oil supply valve located upstream from the pump. 6.
Setup Connecting Lube Lines to Pump: Suction, Gravity and Pressure Fed Pump Models Only 3. After startup, ensure sensor is activating correctly. Adjusting the Pump NOTE: The lube line refers to the outlet line supplying lubricant to the lubrication points. 1. Apply thread sealant (user supplied) to lube line fitting. 2. Connect lube line to pump outlet (6), (FIG. 8)(also see pages 15 and 16). 3. Torque lube line fitting to 50 + 5 in. lbs (5.65 + 0.6 N.m).
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 (8) (FIG. 9) to change the piston stroke. (See Adjusting the Pump.
Specifications Specifications Table 1 Drops per Stroke Table Section of Table Applies to Suction and Gravity Fed Models Only Piston Diameter Max Outlet Pressure† inches mm psi MPa bar 3/16 1/4 3/8 4.76 6.35 9.53 7500 6000 3500 51.7 41.4 24.1 517 414 241 Drops/Stroke1, 2 Min* Max Cubic Inch/Stroke Min* 0 7 0 0 12 0 0 27 0 * Pump adjusted to zero stroke • Allowable viscosity range independent of temperature: 80-5000 SUS.
Troubleshooting Troubleshooting I Problem Pump does not flow Pump has low flow Cause Solution Pump stroke is adjusted to zero. Adjust pump stroke for desired output. See page 8. Pump outlet is plugged. Clean/flush pump outlet. Outlet check valve damaged. Pump inlet check ball and/or seat is damaged or worn. Replace pump. Pump stroke is adjusted to minimal travel. Adjust pump stroke for desired output. See page 8. Pump inlet check ball and/or seat is damaged or worn. Replace pump.
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).
Technical Data Technical Data Suction, Gravity Pressure Fed Box Lubricator Pump or Shaft Rotation Alarm Pump Maximum Working Pressure US Metric All 3/16” Piston Models 7500 psi 51.7 MPa, 517 bar All 1/4” Piston Models 6000 psi 41.4 MPa, 414 bar All 3/8” Piston Models 3500 psi 24.1 MPa, 241 bar Alarm Pump* 200 1.
Technical Data Pump Dimensions Dimension Inches mm A B C 3.10 1.97 0.50 Pump Min. 2.58 Pump Max. 3.18 5.37 Min. 4.14 Max 4.90 1.50 0.50 0.50 0.39 0.92 0.28 5.40 3.85 10.13 76.20 50.04 12.70 Pump Min. 65.53 Pump Max.78.23 136.40 Min. 105.20 Max 124.50 38.10 12.70 12.70 9.90 23.37 7.11 137.20 97.79 257.
Technical Data Gravity Fed Inlet Outlet P A C D Outlet Pressure Fed Inlet A B C D 3A2257C 15
Technical Data Suction Fed Outlet P A C D N Inlet 16 3A2257C
Technical Data Alarm Pump 1/4 NPT Sensor Output Return to Reservoir R P C D N Inlet 3A2257C 17
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.
