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Repair

3A8109A

15

Replace Fluid Module

1.

Remove G-JR Pump

, page 14.

2.

Remove gear cover (3).

3.

Remove the motor shroud by pressing the top and 
bottom tabs with a flat screwdriver.

4.

Remove the two T-20 hexalobular (6lobe) screws 
from the back of the motor using a star screwdriver.

5.

Remove the motor.

6.

Remove the four T-30 6lobe screws, using a star 
screwdriver, and the mounting plate from the pump. 

NOTE:

 The screws are torqued tightly at the factory and 

may require a bend vise and a drill or impact driver to 
remove.

7.

Pull the gear assembly off the pump.

NOTE:

 It is helpful to rock the gear back and forth or to 

spin the gear while pulling the fluid module and gear 
assembly apart.

8.

Discard the fluid module and install the new fluid 
module.

9.

Insert the bearing tab into the pocket on the plunger 
of the new fluid module, and rock the gear back and 
forth or spin the gear while pushing the fluid module 
and gear assembly together.

10. Continue to spin the gear until the plunger moves 

fully into the pump and the drive-train mounting 
plate is flush with the pump mounting plate.

11. Reinstall the mounting bracket and the four T-30 

6lobe screws. Torque to 80-90 in-lbs (9-10 N•m).

NOTE:

 A bench vise and a drill or impact driver will be 

needed for reassembly with a new fluid module.

F

IG

. 7 Remove the motor shroud and motor

3

Motor Shroud

Motor

T-20 6lobe Screw

F

IG

. 8 Remove the gear assembly

T-30 6lobe
Screw

Mounting Plate

Gear Assembly

Plunger

Bearing Tab

Содержание 25T650

Страница 1: ...n explosive atmospheres or hazardous classified locations Not recommended for use with chemicals outside of the pH range of 4 9 See page 2 for model information including maximum working pressure Impo...

Страница 2: ...t 10 Prime the Pump 11 Calibrate Chemical Dosage 11 Troubleshooting 12 Repair 13 Remove G JR Pump 13 Replace Fluid Module 14 Replace Gear Assembly 15 Replace Motor 15 Reinstall G JR Pump 15 Parts 16 G...

Страница 3: ...grounded hoses Stop operation immediately if static sparking occurs or you feel a shock Do not use equipment until you identify and correct the problem Keep a working fire extinguisher in the work ar...

Страница 4: ...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 co...

Страница 5: ...ents inside the enclosure 1 by removing the lid 7 and pump cover 4 to FIG 1 G JR Pump Components 1 Enclosure 2 G JR Pump Module 3 Harrier EZ JR Controller 4 Pump Cover 6 Base 7 Lid included with Enclo...

Страница 6: ...less steel element to filter particles from the fluid before it reaches the pump Fluid Shutoff Valves L shuts off fluid flow Pressure Relief Valve D overpressure protec tion Flush Before Using Equipme...

Страница 7: ...nly component in FIG 3 supplied by Graco All other com ponents are supplied by customer Key A G JR pump B Power Source C Tank D Pressure Relief Valve Required E Inlet Line F Outlet Line G Pressure Rel...

Страница 8: ...tlet J See FIG 1 on page 5 2 Connect a 1 4 npt f fluid line from the fluid source to the Pump Inlet H 3 Install a Pressure Relief Valve D on the outlet side of the pump See FIG 3 on page 7 NOTE A Pres...

Страница 9: ...DC models 25T650 connect red wire on the controller 15 to the red wire on the power supply 13 and the black wire on the pump 2 to the black wire of the power supply 13 To reduce the risk of electrical...

Страница 10: ...luid being dispensed and the equipment s wetted parts 1 Perform the Pressure Relief Procedure 2 Connect the Pump Inlet H to the flushing fluid sup ply source See FIG 1 on page 5 3 Connect the Pump Out...

Страница 11: ...ntroller in conjunction with baseline chemical dosage settings in Table 1 Baseline Chemical Dosage Settings page 12 2 Adjust the cycle rate on time on your Harrier control ler accordingly after the ca...

Страница 12: ...OFF sec ON sec OFF sec ON sec OFF sec ON sec OFF sec ON sec OFF sec ON sec OFF sec 0 0 3 300 0 5 239 0 7 239 0 2 60 0 5 59 0 7 59 500 0 4 300 0 5 179 0 7 179 0 3 60 0 6 59 1 0 59 1000 0 4 240 0 6 179...

Страница 13: ...line is loose Tighten Fluid leaking Loose fittings Tighten fittings Worn or damaged seals and or packing Replace Fluid Module page 15 Motor running but no fluid moving Pump stalled Check pump for con...

Страница 14: ...ws 5 and lock nuts 20 to remove the Harrier controller bracket 25 4 Remove the four screws 5 and lock nuts 20 to remove the G JR pump 2 and mounting plate from the enclosure 1 5 Unplug the two motor w...

Страница 15: ...ile pulling the fluid module and gear assembly apart 8 Discard the fluid module and install the new fluid module 9 Insert the bearing tab into the pocket on the plunger of the new fluid module and roc...

Страница 16: ...the new motor shroud to the motor with the top and bottom tabs 4 Reinstall the gear cover 3 5 Reinstall the gear assembly per step 3 of Replace Gear Assembly page 16 Reinstall G JR Pump 1 Reconnect t...

Страница 17: ...Parts 3A8109A 17 Parts G JR Chemical Injection Pump 1 2 3 4 5 20 12 17 7 6 21 10 11 18 20 15 19 25 12 14 13 20 5 12 Models 25T650 12 VDC and 25T651 115 VAC...

Страница 18: ...9 Screw machine phillips pan head 10 24 UNC SST included in ref 25 2 20 Nut lock with nylon insert included in ref 2 and 25 10 21 15G303 Label warning electrical model 25T651 only 1 25 25T828 Bracket...

Страница 19: ...See Motor Electrical Connections on page 9 Environmental temperature range ordinary location 40 120 F 18 50 C Noise dBa Maximum sound pressure 70 dBa Inlet Outlet Sizes Fluid inlet size 1 4 in npt f F...

Страница 20: ...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 WARRAN...

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