Troubleshooting
WARNING
To reduce the risk of serious bodily injury, including skin injection, splashing in the eyes or on the skin, or injury from moving parts, always follow the Pres- sure Relief Procedure on page 5 whenever the pump is shut off, before installing, cleaning, adjust- ing, removing, or servicing the valve or any part of the system, and whenever you stop dispensing.
NOTE: Check all possible solutions in the chart below before you disassemble the regulator.
Problem | Cause | Solution |
|
|
|
No pressure regulation | Damaged diaphragm | Replace diaphragm. |
| Leaking or dirty seat | Replace cartridge, or clean seat. |
|
|
|
No fluid flow | Damaged valve actuator | Replace valve actuator. |
|
|
|
Pressure creeps above | Metal chip or contamination | Replace cartridge, or clean seat area. |
setting | between ball and seat |
|
| Damaged diaphragm | Replace diaphragm. |
| Damaged | Replace the |
| Damaged or clogged air regulator or | Clear obstruction in line. Service regula- |
| line | tor if necessary. |
| Leaking or dirty seat | Replace cartridge, or clean seat. |
| Large change in inlet pressure | Stabilize regulator inlet pressure. |
|
|
|
Pressure drops below | Empty/clogged supply line | Fill/flush supply line. |
setting |
|
|
| Damaged or clogged air regulator or | Clear obstruction in line. Service regula- |
| line | tor if necessary. |
| Using valve beyond its rated flow | Install valve for each spray gun or |
| capacity | dispensing valve. |
| Large change in inlet pressure | Stabilize regulator inlet pressure. |
|
|
|
Fluid leaks from spring | Loose fluid housing | Tighten the four cap screws. |
housing |
|
|
| Damaged diaphragm | Replace diaphragm. |
|
|
|
Chatter | Excessive pressure differential | Reduce pump pressure to not more than |
| between pump and gun | 2000 psi (14 MPa, 138 bar) greater than |
|
| required gun pressure. |
| Excessive flow rate | Reduce fluid flow through regulator. |
|
| Connect only one spray gun or dispens- |
|
| ing valve to each fluid regulator. |
|
|
|
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