Graco 295616 Operation, Pressure Relief Procedure, Flushing, Daily Startup, Daily Shutdown

Page 11

Operation

Operation

Pressure Relief Procedure

Trapped air can cause the pump to cycle unexpect- edly, which could result in serious injury from splashing or moving parts.

1.Engage trigger lock.

2.Close the bleed-type master air valve.

3.Disengage the trigger lock.

4.Hold a metal part of the dispense valve firmly to a grounded metal pail. Trigger the valve to relieve pressure.

5.Engage the trigger lock.

6.Open all fluid drain valves in the system, having a waste container ready to catch drainage. Leave drain valve(s) open until you are ready to dispense again.

7.If you suspect the nozzle or hose is clogged or that pressure has not been fully relieved after following the steps above, VERY SLOWLY loosen the hose end coupling to relieve pressure gradually, then loosen completely. Clear hose or nozzle obstruc- tion.

Flushing

Trapped air can cause the pump to cycle unexpect- edly, which could result in serious injury from splashing or moving parts.

• Flush at the lowest pressure possible. Check connectors for leaks and tighten as necessary.

Flush with a fluid that is compatible with the fluid being dispensed and the equipment wetted parts.

1.Follow Pressure Relief Procedure, page 11.

2.Place suction tube in grounded metal drum contain- ing cleaning fluid.

3.Set pump to lowest possible fluid pressure, and start pump.

4.Hold a metal part of the dispense valve firmly to a grounded metal pail. Trigger the dispense valve until clean solvent dispenses.

5.Remove valve from hose.

6.Follow Pressure Relief Procedure, and remove fluid filter and soak in solvent. Replace filter cap.

Daily Startup

1.Verify that the air needle valve is closed.

2.Connect the air line quick disconnect coupler to the transfer pump

3.Turn on the main air supply.

4.Slowly open the air needle valve until the transfer pump runs slowly.

5.Use the air needle valve to control the pump speed.

Caution

Never allow the pump to run dry of the fluid being pumped. A dry pump will quickly accelerate to a high speed and could cause personal injury and/or dam- age to the pump. If the pump accelerates quickly or starts running too fast, stop it immediately and check the fluid supply. If the supply container is empty or air has been pumped into the lines, refill the container and prime the pump and the lines with fluid, or flush and leave it filled with a compatible solvent. Be sure to eliminate all air from the fluid system.

Do not attempt to operate pump unless it is securely mounted in a drum.

Daily Shutdown

1.Disconnect air line coupler.

2.When air pressure is bled off, close the air line nee- dle valve.

311882T

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Contents Ratio Transfer Pump Important Safety InstructionsContents Equipment Misuse Hazard Keep Components a and B Separate Moisture Sensitivity of IsocyanatesIsocyanate Hazard Foam Self-IgnitionKey for FIG Typical Installation, without CirculationTypical Installation, with Circulation Typical Installation, with CirculationTypical Installation for Lubrication Applications Typical Installation for Lubrication Applications Fluid Line Accessories Installation System Accessories Air Line AccessoriesSetup Grounding the System Daily Startup Pressure Relief ProcedureOperation FlushingSeries a Air Valve Air Motor RepairWLD Pump Lower Repair Remove pins 55. See FIG Seal stack enlarged to show detail Problem Cause Solution ReassemblyTroubleshooting 51c Parts ModelGASKET, Ptfe Part Description QtyPart Description Part Description 103538 CLAMP, groundQty Part Description Fluid Drain ValveT2 21 Ratio Transfer Pump Metric Technical DataDimensions Key Air Pressure Performance ChartGraco Information Graco Standard Warranty