Graco Inc 308639L Operation, Pressure Relief Procedure, Flush the Pump Before First Use

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Operation

Pressure Relief Procedure

WARNING

To reduce the risk of serious injury, including splashing fluid in the eyes or on the skin, follow this procedure whenever you are instructed to relieve pressure, when you shut off the pump, and before you check, adjust, clean, move, or repair any system equipment.

1.Shut off the air to the pump.

2.Open any available outbound fluid valves to relieve fluid pressure from the pump.

3.If fluid is still in the outbound fluid lines, isolate this fluid as follows:

a.Close the outbound fluid valves.

b.Slowly remove the fluid connections from the pump, and have a container ready to catch any fluid that runs out.

Flush the Pump Before First Use

The pump was tested in water. If water could contaminate the fluid you are pumping, flush it thoroughly with a compatible solvent. Follow the procedure in Starting and Adjusting the Pump.

3.Place the suction tube (if used) in the fluid to be pumped.

NOTE: If the inlet pressure to the pump is more than 25 percent of the outlet working pressure, the ball check valves will not close fast enough, resulting in inefficient pump operation.

4.Place the end of the outlet hose into an appropriate container.

5.Close the fluid drain valve.

6.With the air regulator closed, open all bleed-type master air valves.

7.If the outlet hose has a dispensing device, hold it open while continuing with step 8.

8.Slowly open the air regulator until the pump starts to cycle. Allow the pump to cycle slowly until all air is pushed out of the lines and the pump is primed.

If you are flushing, run the pump long enough to thoroughly clean the pump and hoses, close the air regulator, and remove the suction hose from the solvent and place it in the fluid to be pumped.

If you are shutting down the pump, remove the suction hose from the fluid container, run the pump until the fluid is forced out of the system, and shut off the air supply immediately.

If you are going to use the pump, start the pump again, and place the suction hose in the supply container.

Starting and Adjusting the Pump

WARNING

To reduce the risk of serious injury, splashing in the eyes or on the skin, and toxic fluid spills, never move or lift a pump under pressure. If the pump is dropped, the fluid section could rupture. Always follow the Pressure Relief Procedure above before you move or lift the pump.

1.Be sure the pump is properly grounded. Read and follow the instructions in Grounding on page 4.

2.Check all fittings to be sure they are tight. Be sure to use a compatible liquid thread sealant on all male threads.

Pump Shutdown

At the end of the work shift and before checking, adjusting, cleaning, or repairing the system, relieve the pressure.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure at left.

308639 9

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Contents Contents Instructions Parts List308639 Equipment Misuse HazardHazardous Fluids General Information InstallationTightening Screws Before First Use Grounding Hazardous FluidsKEY FLOOR-MOUNT Typical InstallationAir Line MountingsFluid Lines Fluid Outlet LineFluid Pressure Relief Valve Changing Manifold OrientationAir Exhaust Ventilation Toxic Fluid HazardVenting Exhaust AIR Starting and Adjusting the Pump Pressure Relief ProcedureOperation Flush the Pump Before First UsePreventive Maintenance Schedule MaintenanceLubrication Flushing and StorageProblem Cause Solution TroubleshootingRepairing the Air Valve ServiceDisassembly See Fig Relieve the pressure Tools RequiredReassembly Ball Check Valve Repair Diaphragm Repair Removing and Replacing Bearings and Air Gasket on Disassembly Relieve the pressure302 301 Removing and Replacing Bearings and Air Gasket See Fig Through hole must be on bottom Detail of BearingsHusky 3275 Pumps, Series C Pump Matrix232505, Aluminum 3275 Pump, Series C 24D619, Aluminum 3275 Pump, Series aFor Husky 3275 Pumps, Series C Repair Kit Matrix303 301 302 61 2 114 201 102 101 201* 102 Parts DrawingAir Motor Parts List Matrix Column Parts ListsFluid Section Parts List Matrix Column Digit Description QtySeat Parts List Matrix Column Technical DataBall Parts List Matrix Column Diaphragm Parts List Matrix ColumnTorque Sequence Front View Dimensional DrawingsPump Mounting Hole Pattern Side ViewPerformance Charts Fluid Outlet PRESSURE--psi MPa, barFluid Pressure Curves Air Consumption Curves AIR CONSUMPTION--scfm cubic meters/min308639 Graco Information Graco WarrantiesToll Free, 612-623-6921, 612-378-3505 Fax Graco Headquarters Minneapolis