Graco 312781E Repair the Valves and Seats ProMix 2KS and ProMix 3KS only, Dispense Valve Cap

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Repair the Valves and Seats (ProMix 2KS and ProMix 3KS only)

Valve Seat Kit 24A861 is available. See page 15. Parts included in the kit are marked with a symbol, for exam- ple (16‡). For best results, use all parts included in the kit.

See the Parts drawings on pages 14 and 16. Clean and inspect all parts. Apply pipe sealant to all pipe threads when reassembling.

1.Relieve pressure.

2.Disconnect the fluid line from the valve adapter (17).

3.Disconnect the air lines from the valve (19).

4.Unscrew the cap (C) to remove spring pressure on the valve. See FIG. 5.

NOTE: Another method of removing spring pres- sure is by applying air to the ON port, to lift the valve needle off the seat.

C

ON Port

TI11581a

FIG. 5. Dispense Valve Cap

Repair

5.Remove the screws (20). Lift the adapter (17) and valve (19) off the shutoff valve manifold (11 or 36).

6.Remove the seat (16) and o-rings (15).

7.Unscrew the valve (19) from the adapter (17). Remove the o-ring (18).

NOTE: See manual 312782 to repair the valve (19).

8.Install the new seat (16‡) and o-rings (15‡).

9.Reinstall the adapter (17) and screws (20).

10.Before performing step 11, install the new o-ring (18*) and screw the valve (19) securely into the adapter (17).

11.Install the spring and valve cap (C). See manual 312782 to adjust the spring tension and needle travel.

12.Reconnect the fluid and air lines.

312781E

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Contents Fluid Mix Manifold Important Safety InstructionsModels ContentsRelated Manuals Fluid Connections InstallationFlush Before Using Equipment Air ConnectionsKey ProMix 3KS Fluid Station Key ProMix 2KS Fluid StationDVA3 behind KeyDVA2 Restrictor Sizes Size Code Orifice Size Setup the Fluid Manifold for Dynamic DosingOperation Guidelines Adjust gun atomizing air pressure as neededOperation PurgingWeekly MaintenanceMix Manifold Valve Settings Preventive Maintenance ScheduleUnbalanced Pressure TroubleshootingIsolate a Mixing Problem Common CausesRemove from the bottom RepairRemove the Integrator Mixer Remove the Restrictor ProMix 2KE, Dynamic Dosing onlyDispense Valve Cap Repair the Valves and Seats ProMix 2KS and ProMix 3KS onlyReplace the Outlet Tube and Static Mixer Tube Rebuild the Mix ManifoldRepair 312781E Part No , for ProMix 2KS Proportioner PartsSize Description Integrator Kits include partsPart No. Description Qty Part No , for ProMix 3KS Proportioner Part No , for ProMix 3KS Proportioner Part Description Qty Part No , for ProMix 2KE Proportioner, Sequential DosingIntegrator Kits Restrictor Kit Part No , for ProMix 2KE Proportioner, Dynamic DosingParts 289695, 256875, and 262398 4000 psi 28 MPa, 280 bar Technical DataGraco Information Graco Standard Warranty
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