Graco Inc 233757 important safety instructions Troubleshooting, Problem Cause Solution

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Troubleshooting

Troubleshooting

Relieve the pressure (page 11) before checking or repairing the equipment.

To repair the regulator, refer to page 13.

Problem	Cause	Solution


Drop in fluid outlet pressure.	Ruptured diaphragm (15).	Replace diaphragm.

	Air escaping (pneumatic regulators	Check air hose and connections.
	only).	Replace piston seal (21).
		Replace piston seal (21).

Fluid outlet pressure increases to	Valve ball (5) and seat (2) are worn	Clean ball and seat. Replace worn or
level of fluid inlet pressure.	or stuck open.	damaged parts.

Fluid leaking from upper housing.	Ruptured diaphragm (15).	Replace diaphragm.

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Contents Low Pressure Model 233757 Shown II 2 GContents List of Models Key to Model DesignationEquipment Misuse Hazard Pressurized Equipment Hazard Introduction Back Pressure RegulatorsFluid Pressure Regulators Fluid Inlet from gunAdjustment screw Spring Diaphragm Valve plunger Fluid Inlet from pump Valve ball and seatFluid Outlet to gun Air inlet Diaphragm Fluid Outlet To gun Valve plungerInstallation Air to gun Fluid Air to pumpG a B Air to Fluid RegulatorAir to Pump GunAir to GunAir to Fluid Regulator Fluid to gun Air Fluid Air to Back Pressure RegulatorPressure Relief Procedure Adjusting the RegulatorOperation Flush Before First UseTroubleshooting Problem Cause SolutionMaintenance Cleaning and RepairFlushing Parts Mechanical Fluid Pressure Regulators Part NosDescription Mechanical Back Pressure Regulators Part Nos Part No. Description TI11249a Description Qty Pneumatic Back Pressure Regulators Part Nos Technical Data Category DataAccessory Gauges Flow Rate DataGauge Mounting Dimensions Thread Dimension aMounting Dimensions 309474K Graco Warranty For Graco Canada Customers