Graco Inc 309475F important safety instructions Troubleshooting, Problem, Cause, Solution

Models: 309475F

1 28
Download 28 pages 59.72 Kb
Page 14
Image 14

Troubleshooting

Troubleshooting

Relieve the pressure (page 13) before checking or repairing the equipment.

To repair the regulator, refer to page 15.

Problem

Cause

Solution

 

 

 

 

 

 

Drop in fluid outlet pressure.

Ruptured diaphragm (17) (pneu-

Replace diaphragm.

 

matic regulators only).

 

 

 

 

 

Air escaping (pneumatic regulators

Check air hose and connections.

 

only).

Replace packings (13).

 

 

 

 

 

 

Worn packings.

Replace packings (13).

 

 

 

Fluid outlet pressure increases to

Valve ball (8) and seat (4) are worn or

Clean ball and seat. Replace worn or

level of fluid inlet pressure.

stuck open.

damaged parts.

 

 

 

Fluid leaking from upper housing.

Ruptured diaphragm (17) (pneu-

Replace diaphragm.

 

matic regulators only).

 

 

 

 

 

Worn packings.

Replace packings (13).

 

 

 

14

309475F

Page 14
Image 14
Graco Inc 309475F important safety instructions Troubleshooting, Problem, Cause, Solution