Groz BGRP Series, BGRP/30, BGRP/50, BGRP/15 Instruction Manual

INSTRUCTION MANUAL S1350, Rev C

Air Operated Grease Ratio Pumps 50:1 BGRP

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

Pull Handle

Grease Control Valve

Z Swivel

High Pressure

Rubber Hose

Drum Capacity 30 Kg

Grease Pump

Drum Cover

Cover Screws

Grease Drum

Wheels

• Supplied complete with built-in Steel Drum, wheels & pull handle, Drum Cover, rubber lined Follower Plate, 7’ (84”) of high pressure Grease Hose, Z swivel & professional Grease Control Valve

Drum Capacity 15 Kg

Drum Capacity 50 Kg

PUMP CONSTITUENTS

1. Grease Pump Assembly

2. Drum Cover

3. Rubber Lined Follower Plate

4. Steel Bucket with Cover Screws, Wheels & Pull Handle

5. High pressure Rubber Hose

6. Professional Grease Control Valve with Z Swivel

PUMP CONSTRUCTION

Drive Section

The pump is made up of two sections as given below :-

• Drive section :- It consists of an Air Motor Assembly driven

by compressed air. The piston diameter of the air motor is

2.5” / 63 mm. The motor consists of an air cylinder with

piston and one reciprocal valve with a nylon slider. The valve

directs the compressed air alternately to the top or bottom

of the piston, thus producing a reciprocating motion of the

piston rod.

• Pumping Section :- It consists of a pump in which a piston

lifts the grease through Non Return Valves by reciprocating

inside the pump cylinder. The grease is discharged with

pressure (from the outlet located at bottom of Air Motor) into

the delivery hose.

Pumping Section

NOTE

AIR MOTOR of these pumps starts automatically when the

Grease Control Valve is opened. When the valve is closed, Air

Motor builds up a back-pressure and stops operating the pumping

section.

PRESSURE RATIO of the pump states the ratio of the output

grease pressure to the incoming air pressure. When the pressure

ratio is 50:1, we achieve an output grease pressure up to 7500 PSI

(500 BAR) when the incoming air pressure is 150 PSI (10 BAR ).

WORKING OF PUMP

UPSTROKE DOWNSTROKE

UPSTROKE -

DOWNSTROKE -

When Grease Control Valve is opened, compressed air enters at arrow A and passes through passage B to the underside of the Piston C, driving the Piston C and Piston Rod D upwards. The air above the Piston is evacuated through passage E, past the Slider Valve F and out at arrow G.

The Piston approaches top dead centre and Piston Rod D makes contact with the Slider Rod H. Now the Slider Rod H starts moving up with the Piston Rod D.

The air motor repeats Upstroke & Downstroke in continuous cycle to produce a reciprocating motion, driven by compressed air. This motion is transferred via a connecting rod to the piston in the Pumping Section. During every upstroke, non return valves (with spring & ball check) get opened & the piston lifts the grease. During every downstroke, non return valves get closed & the piston discharges grease from the outlet valve.

Closing the Grease Control Valve shuts off the air motor & pump stops dispensing grease.

The incoming air is now led via passage E to the upper side of Piston C, driving it and the Piston Rod D downwards. The air under the Piston C is evacuated through passage B, past the Slider Valve F and out at arrow G.

The Piston approaches bottom dead centre and Piston rod D makes contact with the Slider Rod H. When Slider Rod H passes its centre position, the Pusher Spring I and Pusher Button J snap it over to its lower position.

INSTALLATION

NOTE

An FRL (Filter-Regulator-Lubricator) unit must be used in the Air supply, before it is connected to the pump. Set the regulator to 6 BAR (90 PSI)

or any required inlet pressure, but never more than 150 PSI (10 BAR) or less than 30 PSI (2 BAR).

1. Fill the drum with

Grease leaving empty

space of about 2” from

the top rim. Shake the

drum after it is filled

to remove air pockets.

Place the follower

plate in the grease

drum with the

lift handle facing

upwards. Push the

follower plate down,

until some grease is

forced through the

centre hole on the

plate.

2. Place the drum cover

on the drum. Lift the

pump assembly &

slide the suction tube

through the drum

cover & centre hole in

the follower plate.

3. Push the pump

assembly down till

the bottom of the

pump touches the

base of the drum.

Adjust the drum cover

and tighten it with

the thumb screws

provided along with

the drum cover.

Lift Handle

Thumb

Screw

4. Tighten the drum cover

with the pump suction

tube with the help of

thumb screws.

Thumb Screws

5. Use a wrench to tighten

high pressure hose to the

pump outlet.

6. Use a wrench to tighten

the other end of the hose

to Z Swivel of grease

control valve. Tighten the

outlet extension & coupler

to the control valve outlet.

Use thread sealant on all

connections to ensure

leak-proof working.

7. With the air supply turned

off, connect the Air line

into the air inlet on the

pump.

Hose

Extension

& Coupler

Z Swivel

Air Line

PUMP OPERATION

1. Partially open the on/off air valve ( It helps in creating initial vacuum when filling a totally dry pump ). Pump will start operating

automatically until it gets primed. Pump is said to be Primed when grease is available at the pump outlet, making the pump ready to use.

Once primed, the air motor will stop. Open the on/off air valve fully.

2. Hold the grease control valve near a container & press the trigger. Pump will start

operating with continuous grease discharge as long as the trigger is pressed. Release

the trigger & this will stop the pump. Check for any leaks from any of the connections &

Tighten again if required.

3. Connect coupler fitted onto the control valve extension with the grease nipple & press

trigger. Be careful not to over-lubricate as the pump will keep dispensing grease as long

as the trigger is pressed. Once the trigger is released, pump will stop dispensing grease

& the air motor will stop.

4. When not in use & at the end of each day, air supply to the pump must be switched off.

MAINTENANCE & REPAIR (Refer to Parts Drawing) Service Precautions

• Before performing any service operation, always shut off the air supply and release the pressure of the medium, i.e. let the grease out so

that the pressure decreases. When storing the pump assembly without the bucket, cover the Filter Tube (57) with Filter Cap (62).

• Be careful not to damage any parts when dismantling. While removing shafts which do not have key flats, wrap a thick piece of cloth

around the shaft before removing it with a Pipe wrench, Polygrip wrench or the like. The easiest way to remove such a shaft is to grip it in

a vice with aluminium or copper jaws, clamp the shaft in a hand-drill chuck and then turn the chuck by hand.

• Be careful when fitting O-rings and seals. Always lubricate them with oil or grease before fitting. They must never be threaded over sharp

edges when being fitted. Lubricate all moving parts with oil or grease.

• When troubleshooting, be on a lookout for dirt in valves / ball seats, scratches in sealing surfaces & damaged O-rings / seals / gaskets.

Pumping Section Disassembly & Reassembly

1. Hold the complete pump assembly in a vice & unscrew the

Filter Tube (57). Prevent the Piston Rod (55) from rotating by

inserting a rod through the side hole in Piston Rod. Remove

the Nyloc Nut (61) & Piston Washer (60).

2. Unscrew the Bottom Coupler (54) & remove Slide Bush (53).

Unscrew the Top Coupler (52) & remove lower Steel Ball (47),

Non Return Spring (48), Valve (49) & both O Rings (50).

3. Unscrew the Barrel (63). Drive out the lower Slotted Spring

Pin (44) taking care not to bend the Extension Rod (46).

4. Unscrew the Pump Cylinder (51) from Extension Rod (46).

Remove upper Steel Ball (47) & Non Return Spring (48).

5. Drive out the upper two Slotted Spring Pins (44), unscrew the

Extension Rod (46) and then Connector (45).

6. Assemble by following the steps 1-5 in reverse order taking

care of the points below:

• Pump Cylinder (51) has a pin-hole end that must face

upwards; towards Extension Rod (46).

• Slide Bush (53) has a slotted end that must always

face upwards; towards Top Coupler (52).

• When fitting Plunger Rod (9), Connecting Rod (43) &

Plunger Nut (7), apply locking fluid on the threads.

• Replace Component No. 51, 52, 53 & 55 as a SET.

Drive Section Disassembly & Reassembly

1. Remove Bend Pipe (1) by opening both the Coupling Nuts (2).

Remove both Sealing Rings (3) & unscrew both Bends (4).

Unscrew the Cylinder Cover (5) and Cylinder (10).

2. Unscrew Inlet Cover (32) & dismantle the two Pushers (15)

with their Pusher Springs (17), Pusher Nuts (18) & Pusher

Buttons (19).

3. Remove Circlip (20), both Filters (21), O Ring (22) & Exhaust

Valve (23).

4. Unscrew the Plunger Nut (7) and remove Rubber Plunger (8).

5. Unscrew Plunger Rod (9) from Connecting Rod (43) and

remove Slider (30). Remove Slider Guide (38), its outer O Ring

(37), Seals (39), Seal Support (40) & its inside O Ring (11).

6. Open the two Screws (29) & remove Clip (28), Nylon Slider

(27), Slider Guide (26), Seat (25) & Paper Seal (24).

7. For reassembly of Air Motor, follow the above-mentioned

steps 1-6 in reverse order taking care of the points below:

• When fitting Pushers (15), open Inlet Cover (32) &

ensure correct installation of Pusher Buttons (19).

• Conical side of Seals (39) must face upwards.

Assemble Slider guide (38), its outer O Ring (37),

Seals (39), Seal Support (40) & its inside O Ring (11).

Hold them as a set & mount on Connecting Rod (43).

PARTS DRAWING FOR BGRP

PUMP ASSEMBLY

GREASE BUCKET, DRUM COVER, FOLLOWER PLATE,

HOSE, Z SWIVEL & GREASE CONTROL VALVE

Correct Fitment of

Seals (39)

Conical side of

Seals (39) must face

upwards

Replace Component No.

51, 52, 53 & 55

as a SET

Correct Fitment of

Slide Bush (53) &

Pump Cylinder (51)

Slotted side

must face

upwards

Pin Hole end

must face

upwards

PARTS LIST FOR PUMP ASSEMBLY

REFERENCE NO. DESCRIPTION QUANTITY

1 Bend Pipe 1

2 Coupling Nut 1

3 Sealing Ring 2

4 Bend 2

5 Cylinder Cover 1

6 O Ring BS141 2

7 Plunger Nut 1

8 Rubber Plunger 1

9 Plunger Rod 1

10 Cylinder 1

11 O Ring BS614 2

12 Rod Guide 1

13 O Ring 1

14 Housing 1

15 Pusher 1

16 O Ring BS617 4

17 Pusher Spring 2

18 Pusher Nut 2

19 Pusher Button 2

20 Circlip 1

21 Filter (B) 2

22 O Ring BS121 1

23 Exhaust Valve 1

24 Paper Seal 1

25 Seat 1

26 Slider Guide 1

27 Nylon slider 1

28 Clip 1

29 Self Tapping Screw 2

30 Slider 1

31 O Ring BS129 1

32 Inlet Cover 1

33 Filter (B) 1

34 Air Inlet Adapter 1

35 Outlet Adapter 1

36 Adapter Cap 1

37 O Ring 1

38 Slider Guide 1

39 Seal 4

40 Seal Support 1

41 Spring 1

42 Washer 1

43 Connecting Rod 1

44 Slotted Spring Pin 3

REFERENCE NO. DESCRIPTION QUANTITY

45 Connector 1

46 Extension Rod 1

47 Steel Ball (7/32”) 2

48 Non Return Spring 2

49 Valve 1

50 O ring (BS812) 2

51 Pump Cylinder 1

52 Top Coupler 1

53 Slide Bush 1

54 Bottom Coupler 1

55 Piston Rod 1

56 Guide Bush 1

57 Filter Tube 1

58 Filter Washer 1

59 Filter Circlip 1

60 Piston Washer 1

61 Nyloc Nut 1

62 Filter Cap 1

63 Barrel 1

PARTS LIST FOR GREASE BUCKET, DRUM COVER, FOLLOWER PLATE, HOSE, Z SWIVEL & GREASE CONTROL VALVE

REFERENCE NO. DESCRIPTION QUANTITY

64 Grease Bucket 15 kg

Grease Bucket 30 kg

Grease Bucket 50 kg

65 Follower Plate 1

66 Drum Cover 1

67 Hose 1

68 Z Swivel 1

69 Grease Control Valve 1

1 1 1

TROUBLESHOOTING (Refer to Parts Drawing)

PROBLEM POSSIBLE CAUSE SOLUTION

Grease is too thick / too cold Store grease in a warm place

Pump operates, but does not dispense any grease

Pump not working / less discharge

Pump continues to operate even after the trigger of Grease Control Valve (69) has been released

Grease comes through the air Exhaust Valve (23)

Air passes directly from inlet to the outlet & pump does not work

Air pockets in grease

Dent in the Grease Bucket (64) restricting movement of Follower Plate (65) leading to formation of air pockets in the bucket and inefficient working

Inlet pressure is too less Increase inlet pressure. It must be at least 30 PSI (2 BAR)

Nylon Slider (27) is jammed / overtight

Piston / Piston Rod / Plunger jammed.

NOTE

Especially check Extension Rod (46), Cylinder (51), Top Coupler (52), Slide Bush (53) & Piston Rod (55) as shown in PARTS DRAWING

Leakage in the assembly

Grease leaks into the Air Motor

Nylon Slider (27) is jammed / overtight

Shake the Grease Bucket (64) & manually force down the Follower Plate (65) to remove air pockets

Get the dent removed to ensure proper movement of Follower Plate (65)

1. Loosen both Screws (29) & remove Clip (28) . Check for any build-up edge on Clip (28) & tighten it again. Make sure the movement of Nylon Slider (27) is neither very loose nor very tight

2. If needed, replace Nylon Slider (27). Also replace the Paper Seal (24), Seat (25), Slider Guide (26) & Clip (28) to ensure the best fitting

1. Remove suction tube. Disconnect Air Motor Assembly from Pumping Section by removing the upper two Slotted Spring Pins (44) from Connector (45)

2. Supply input air to Air Motor. If it works properly without the barrel assembly, then the problem lies with the pumping section. Otherwise check the Air Motor for smooth movement

3. After locating the faulty section, check the respective Piston / Plunger & the associated washers & seals for any overlap or wear & tear. Replace the defective parts from Repair Kit

4. Ensure to replace the moving parts having close tolerances (such as Piston & Cylinder along with Non Return Springs & balls) as a SET to ensure the best fitting

Check all the connections to ensure they are air tight. Use thread sealant Check O rings & seals for damage. Replace the defective parts from Repair Kit

Check Slider Guide (38), O Ring (37), lower O Ring (11), Seals (39) & Seal Support (40) for wear & tear. Replace the damaged parts from Repair Kit

1. Loosen both Screws (29) & remove Clip (28) . Check for any build-up edge on Clip (28) & tighten it again. Make sure the movement of Nylon Slider (27) is neither very loose nor very tight

2. If needed, replace Nylon Slider (27). Also replace the Paper Seal (24), Seat (25), Slider Guide (26) & Clip (28) to ensure the best fitting

Seals / O Rings Damage

Discharge suddenly stopped while the pump was running

Chip / Other foreign particles get clogged at discharge coupler

Clogging of Filter Tube (57) Open Filter Tube (57), clean it & reassemble it properly

Check all seals / O Rings & replace the damaged parts from Repair Kit

Open the coupler, remove all foreign particles / chips & reassemble properly

REPLACEMENT & SERVICE PARTS PROGRAM FOR BUCKET GREASE RATIO PUMP

REPLACEMENT PARTS PROGRAM

REFERENCE NO. PART NO. DESCRIPTION

64 FLP/195-22S/6

FLP/322-380/6

65 DC/BGRP/15

DC/GP1/BL

DC/GP2/BL

66 HOSE/GRP/84/B

HOSE/GRP/84/N

67 HFC/1-4F/1-4M/B

HFC/1-4F/1-4M/N

68 APG/HD/Z/1-4F/B

APG/HD/Z/1-4F/N

Follower Plate, BGRP15

Follower Plate, BGRP30

Follower Plate, BGRP50

Drum Cover, BGRP15

Drum Cover, BGRP30

Drum Cover, BGRP50

Hose, BSP Threads

Hose, NPT Threads

Z Swivel, BSPT Threads

Z Swivel, NPT Threads

Grease Control Valve, BSPT Threads

Grease Control Valve, NPT Threads

SERVICE PARTS PROGRAM

KIT PART NO. KIT

DESCRIPTION

KIT/TP/RP-G DRIVE SECTION KIT

KIT/BTM/RP-G PUMPING SECTION KIT

CONSTITUENT

PART NO.

PART

DESCRIPTION

REFERENCE NO. FROM

PARTS DRAWING

QTY. PER

KIT

SR/B/RP Sealing Ring 3 2

BEND/90/RP Bend 4 2

ORG/BS141 O Ring 6 2

ORG/BS614 O Ring 11 2

ORG/BS617 O Ring 16 4

ORG/BS121 O Ring 22 1

SEL/P/RP Paper Seal 24 1

SET/RP Seat 25 1

SLD/NY/RP Nylon Slider 27 1

CLP/RP Clip 28 1

SCR/M4/RP Self Tapping Screw 29 2

ORG/BS129 O Ring 31 1

ORG/BS614 O Ring 37 1

GUD/SEL/RP Slider Guide 38 1

SEAL/RP Seal 39 4

SU/SEL/RP Seal Support 40 1

ROD/CNR/S/RP Connecting Rod 43 1

SSP/3/0.6/15.3 Slotted Spring Pin 44 3

SB/7-32 Steel Ball (7/32”) 47 2

SPR/NR/RP-G Non Return Spring 48 2

VLV/RP-G Valve 49 1

ORG/BS812 O Ring 50 2

CYL/RP-G Pump Cylinder 51 1

CPL/TOP/RP-G Top Coupler 52 1

BSH/SLD/RP-G Slide Bush 53 1

ROD/PST/RP-G Piston Rod 55 1

BSH/RP-G Guide Bush 56 1

WSR/PST/RP-G Piston Washer 60 1

NN/M6/RP-G Nyloc Nut 61 1

IC/FLT/RP-G Filter Cap 62 1

SPECIFICATIONS

MODEL BGRP/15 BGRP/30 BGRP/50

Bucket Capacity 15 Kg / 1.8 Gal / 33 lbs. 30 Kg / 3.5 Gal / 60 lbs. 50 Kg / 6 Gal / 110 lbs.

Suction Tube Length 17.32” (440 mm) 17.32” (440 mm) 28.74” (730 mm)

Suction Tube Dia. 1.18” (30 mm)

Flow Rate 1.10 Kg / min. (2.42 lbs / min)

Working Pressure 10 BAR (150 PSI)

Maximum Outlet Pressure 500 BAR (7500 PSI)

Air Inlet Connection ¼” (F)

Pump Outlet Connection ¼” (F)

Air Consumption 230 LPM (61 GPM)

Hose Length* 7’ (84”)

Noise Level 81 db

* IT MAY VARY FROM ONE MODEL TO ANOTHER

• Always wear protection gear like safety goggles, gloves, apron, and ear plugs while operating the pump

• Never let any body part come in front of, or in contact with the control outlet

• Always cut off air supply after use, so that media cannot leak incase any of the pump component fails

• Before switching the air supply on, check hoses for sign of wear, leak or loose fittings. Replace as necessary

• Do not smoke near the pump. Do not use the pump near a source of spark / open flames

• When changing the working fluid, at least 1 litre of new fluid should be discarded to avoid mixing of fluids

• Pump should NOT be operated for more than 4 hrs continuously

• Pump must be supplied with CLEAN & DRY compressed air via an FRL unit

• Before attempting any maintenance or repair of this product, disconnect air supply and then squeeze control valve trigger to release fluid pressure

• Use only genuine factory parts for repair

• In case of accident, immediately seek medical attention. Do

not try to treat the injury yourself

WETTED COMPONENTS

Steel, Brass, Aluminium, & Polyurethane

RECOMMENDED USE

With light and self collapsing grease up to NLGI No. 2

Groz Engineering Tools (P) Ltd. Groz Net Industries

Village Kherki Daula, National Highway-8 Gurgaon-122001, Haryana, INDIA TEL +91.124.282.7700 / 221.4050 FAX +91.124.2827986 / 221.4224 FAX (USA) +1.509.271.7848 FAX (UK) +44.870.121.1854

E-MAIL info@groz-tools.com URL www.groz-tools.com

The Groz name, Groz logo and the mark are trademarks of Groz Engineering Tools (P) Ltd. India

Groz BGRP Series, BGRP/30, BGRP/50, BGRP/15 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual