Graco 204501, 204500, 203831 important safety instructions Troubleshooting, Problem Cause Solution

Page 7

Troubleshooting

Problem

Cause

Solution

 

 

 

No pressure regulation

Damaged diaphragm

Replace diaphragm (31).

 

 

 

Fluid leaks under cap

Loose cap, worn gasket

Tighten screws (1), replace gasket

 

 

(32).

 

 

 

 

Damaged diaphragm

Replace diaphragm (31).

 

 

 

Pressure creeps above setting

Loose cap

Tighten screws (1).

 

Worn gasket

Replace gasket (32).

 

 

 

 

Damaged diaphragm

Replace diaphragm (31).

 

 

 

 

Worn or held open fluid valve

Flush regulator, replace fluid

 

 

valves (26 & 27) if worn excessively.

Pressure drops below setting

Loose cap

Tighten screws (1).

 

 

Worn gasket

Replace gasket (32).

 

 

Blocked fluid supply line or valve

Flush supply line and valve,

 

service if necessary.

 

 

Using regulator beyond capacity

Do not use regulator beyond its rated capacity.

306563 7

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Contents Fluid Regulator Instructions-Parts ListSymbols Table of ContentsEquipment Misuse Hazard Moving Parts Hazard Skin Injection Hazard Toxic Fluid Hazard Fire and Explosion HazardTypical Installation InstallationOperation Cleaning the RegulatorProblem Cause Solution TroubleshootingRegulator Disassembly Service306563 Parts Description Qty DimensionsGraco Information Graco Warranty and Disclaimers