Graco Complete Manual for Water Dispensers: PR70 Assembly and Maintenance Guide

Page 36

Pump Assembly

Key:

Ref

P/N

Description

QTY

Ref

P/N

Description

QTY

1

106258

ORING, VIT, JCB

2

9

15K803

COLLAR, PUMP

2

2

108712

NUT, HEX, M8 X 1.25, MS

2

10

15K804

HOUSING, BEARING, SEAL, PR70S

2

3

120887

POSIPAK, 0.375ID X 0.625OD, COIL

2

11

15K824

SHAFT, PISTON, 3/8, PR70S, SS

2

4

120890

RING, RET, INT, 1.00, SS

2

12

15K828

WASHER, SEAL, 3/8, PR70S, SS

2

6

120982

SCREW, SHC, M8 X 1.25 X 65, MS, E

8

13

15K895

HOUSING, CHECK VALVE

2

7

15K786

HOUSING, PUMP, PR70S, MACHINED

1

14

LC0093

KIT, REBUILD, VALVE, CHECK, PR70S

2

8

15K787

CAP, END, PUMP, PR70S, MACHINED

2

 

 

 

 

To install a new Check Valve Rebuild Kit:

1.With the machine in an idle state and a bucket below the dispense valve to catch material, fully

extend the piston by pressing in the M1 screen.

2.To prevent machine movement, press (red).

3.With a bucket below the check valve to be replaced, disconnect the male hose fitting from the check valve housing (13), by loosing the hose from the housing. Catch any material draining from the hose into the bucket.

4.Remove the check valve housing (13) from the pump endcap (8) by loosening the housing with a wrench.

5.Remove the existing check valve (14) from the housing (13) by inserting a screwdriver or dowel rod into the female threaded end of the check valve housing.

6.With the new check valve ball guide (item #3 in figure 43) on a bench with the open end up, install the check valve spring (item 2 of figure 47) into the guide.

7.Install the check valve ball (item 1 of figure 47) on top of the spring.

8.With the rounded inside surface of the check valve seat (item 4 of figure 47) facing down, place the seat on top of the check valve ball.

9.Holding both ends of the assembled check valve assembly, install the check valve into the un-threaded end of the check housing (13) with the ball end facing out. Apply some pressure to the valve to snugly fit the completed check valve into the housing and the fit the check valve seat (item 4 of figure 47) into the valve guide.

10.Verify when the assembled check valve and housing (13) are turned up-side down, that the contents of the valve stays in place.

11.Re-insert the new valve and valve housing into the pump end cap, using a wrench.

12.Re-install the material male hose fitting into the check valve housing using a wrench.

13.Before re-using the machine for operation, activate a few shots to purge any air present in the material hose lines due to the procedure.

14.Re-calibrate the machine if necessary.

Figure 47: PR70 Check Valve Rebuild Kit (LC0093)

Key:

Ref

P/N

Description

QTY

Ref

P/N

Description

QTY

1

105445

BALL,CHECK VALVE

1

3

15D312

BUSHING, BALL GUIDE

1

2

121084

SPRING, 0.30OD X 0.44LG, 22#/IN, 20PSI, S

1

4

196832

SEAT, LAPPED, CHECK VALVE

1

312393G

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Contents PR70 Contents PR70 Accessories Mixer and Shroud OptionsSupplied Manuals Related ManualsPR70 Feed System DescriptionElectric Shock Hazard Equipment Misuse Hazard Installation Locate and Install the PR70Machine Setup General InformationComponent Identification KeyHMI Control and Indicators PR70 Top View with Shield, Tanks, DV and HMI RemovedRun Screen Operation Machine Disable Mode red Setup ScreensEntering the Setup Screens Setup Screens with Passwords EnabledPR70 Screen Navigation Diagram Machine Priming Machine CalibrationPiston Position Calibration C1 Open Dispense Valve ODV Setting C3 Phasing C2Machine Calibration Shots C4 Open Dispense Valve ODV Screen C3 KeyShot Size Definition M2 Ratio ChecksMiscellaneous Machine Setups Purge Timer / Alarm Settings M2Manual Control Options M1 Manual DV ControlCycle Counter and Silent Mode Control M3 M2 after Purge Shot Size PromptDate and Time Settings M4 Tank Level Sensing and Velocity Change Options C6Password Setup / Clearing C5 Setting/Clearing an Administrative PasswordSetting/Clearing a Maintenance only Password Resetting PasswordsTo clear the password, enter Miscellaneous Machine Features HMI Hibernate ModeHMI Demo Mode Operation Limitations of Demo Mode SimulationPressure Relief Procedure Standby/Shutdown ProcedureError Codes Error Code Table Error Code Table E29E50 Key Key Description Screen PR70 HMI Icon TableTables 3 PR70 Screen Icon Tables Tables 4 PR70 Screen Icon Tables Maintenance Software Upgrades, Run TokenRun Token Troubleshooting Problem Cause SolutionRepair Major Mechanical Assemblies, and AttachmentsBase Frame Assembly PR70 Base Frame Assembly LC0109 KeyPR70 Air Cylinder System and Schematic Air Cylinder Assemblies, and Rebuild KitsAir Cylinder Assemblies Pump Assembly Drive Block Assembly Pump Assemblies and Rebuild KitsTo install a new Check Valve Rebuild Kit PR70 Check Valve Rebuild Kit LC0093 KeyTo install a new Rear Pump Rebuild Kit PR70 Rear Pump Rebuild Kit LC0094 KeyPR70 Nylon and Uhmwpe Piston Replacement Kits Key Piston Cylinders or Metering TubesTo install a new Piston or Piston/Cylinder Replacement Kit Nylon Pistons see FigureAvailable PR70 Piston and Cylinder Metering Tubes Kits Key To install a new Piston Plug Assembly Hose AssembliesHeated Piston to DV Hose Assemblies Miscellaneous Mechanical Assemblies To Replace the FusesPR70 Control Bracket Assembly LC0108 Key PR70 Hydracheck Components Wiring Diagrams PR70 Wiring Interconnect IllustrationWiring Diagram, PR70 Technical Data Category DataDimensions PR70 Dimensions ON-Board PE Tank version IllustratedGraco Ohio Standard Warranty Graco Information