Groz GP1 User Manual

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1

INSTRUCTION MANUAL S1230, Rev D

Air Operated Grease Ratio Pumps 50:1

GP1, GP2, GP3

Congratulations on purchase of this World Class Air Operated Grease Ratio Pump !

• World-class Industrial High Pressure Grease pump with guaranteed performance & hassle free operation

• Pump dispenses Grease at pressures upto 50 times the Air inlet pressure

• Designed to work in tough conditions- Ideal for use in Industry, workshop, farm, construction or as part of the Mobile Grease system

• All metal construction, fully CNC machined with hardened wear resistant moving parts

• Reciprocating piston operated 2.5” (63 mm) dia. Air Motor

• Fitted with strainer at suction tube inlet for clean grease to the bearing

• Supplied in two choices :-

- Pump Only

- Pump with Drum Cover, Rubber Lined Follower Plate, High Pressure Grease Hose, Z swivel & Professional Grease Control Valve

Grease Control Valve

Air Motor Assembly

Z Swivel

Drum Cover

High Pressure Rubber Hose

Cover Screws

Suction Tube

Follower Plate

Nozzle Holder

Fig.1

Table of Contents

Questions and Answers:

J
johnnykennedyAug 21, 2025
What to do if air passes directly through my Groz GP1 Water Pump and it doesn't work?
- C
  crawfordwendyAug 21, 2025
  If air passes directly from the inlet to the outlet and your Groz Water Pump doesn't work, it could be due to a few reasons. The Nylon Slider (27) might be jammed or overtight; refer to Drive Section Kit Replacement - Page 8 to check the Clip (28) and tighten it, ensuring the Nylon Slider (27) moves freely. If necessary, replace the Nylon Slider (27), Paper Seal (24), Seat (25), and Slider Guide (26). Another cause could be damaged Seals or O-Rings; inspect all Seals and O-Rings and replace any damaged parts from the Repair Kit. Lastly, a chip or foreign particle might be clogging the discharge coupler. Open the coupler, remove any foreign particles or chips, and reassemble it properly.
B
Brittany LynchSep 1, 2025
Why does Groz Water Pump continue to run after releasing the trigger?
- S
  Stanley ParksSep 1, 2025
  If your Groz Water Pump continues to operate even after releasing the Grease Control Valve (68) trigger, there may be a leakage in the assembly. Check all connections to ensure they are airtight and use a thread sealant. Also, inspect O-rings and seals for damage and replace any defective parts from the Repair Kit.

Groz GP1 Specifications

General

Model	GP1
Category	Water Pump
Pump Body	Cast Iron
Impeller	Brass
Frequency	50 Hz
Type	Centrifugal
Inlet/Outlet Size	1 inch
Max. Suction Lift	8 meters
Max. Head	30 meters
Power	0.5 HP

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