Troubleshooting
WARNING
To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8.
Before servicing this equipment always make sure to relieve the pressure.
Note: Check all possible problems and solutions before disassembling.
Problem
Cause
Solution
Excessive surge at spray nozzle
Obstructed spray tip, valve, or hose | Clean, clear |
Cleaning solution supply empty | Refill |
Clogged intake filter, kinked or col- | Clean, unkink |
lapsed suction hose |
|
Fluid leaking from valve | Loose packing nut or worn packings | See manual |
Valve will not stop dispensing | Valve not adjusted properly | See manual |
| Dirty or worn valve stem or seat | Clean, clear, or replace – See manual |
|
| |
Valve will not stop the pump | Cleaning solution supply empty | Refill |
| Clogged intake filter, kinked or col- | Clean, unkink |
| lapsed suction hose |
|
| Dirty or worn valve stem or seat | Clean clear, or replace – See manual |
|
| |
| Dirty or worn fluid piston or packings | Service – See pump manual |
Pump operating, but spray pres- | Dirty or worn fluid piston or packings | Service – See pump manual |
sure low on up stroke. |
|
|
Pump operating, but spray pres- | Dirty or worn fluid intake valve | Clean, clear, or replace – See pump |
sure low on down stroke |
| manual |
Pump operating, but spray pres- | Clogged intake filter, kinked or col- | Clean, unkink |
sure low on both strokes | lapsed suction hose |
|
| Dirty or worn fluid piston or packings | Service – See pump manual |
| Dirty or worn fluid intake valve | Clean, clear, or replace – See pump |
|
| manual |
| Loose packing nut or worn packings | Tighten, replace – See pump manual |
Fluid will not come from pump | Restricted air line | Check for closed valve; use larger |
(hose removed) |
| supply hose |
| Pump throat packing nut too tight | Loosen |
| Pump air motor not working | Service – See pump manual |
System will not spray | Restricted air line | Check for closed valve; use larger |
|
| supply hose |
| Pump air motor not working | Service – See pump manual |
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