- Replace Diaphragms
- Replace fluid regulator seat and diaphragm
- Replace centre shaft and seals
- Replace Check valves
- Inspect and replace if required:- Air Valve module
- Perform a pump stop test to ensure correct operation, by ensuring pump stops
when the spraygun trigger is closed and there is no fluid flow. If pump does not
stop inspect ball check valves, replace as required.
- Check fluid regulator adjusts fluid pressure correctly. Replace if faulty
a. Check seals and hose connections.
Check air supply
b. Remove, clean, and inspect seat, ball,
and ball cage. Replace if suspect or
worn.
c. Replace shaft and seals.
d. Replace air valve module
a. Air getting into fluid line, air supply
restricted.
b. Fluid check valves damaged
c. Worn centre shaft/seals
d. Worn air valve
Pump runs but has
excessive pulsation
a. Air getting into the suction
hose/manifold
b. Check valve ball/seal damaged
a. No Air or Fluid supply
b. Air valve worn or defective
a. Check air and fluid supply ball valves
and supply hoses.
b. Replace valve module.
- Check for fluid or air leaks
- Inspect Pump for Correct operation
- Check for any excessive mechanical noise
- Check for excessive fluid pressure pulsation
a. Check hose connections
b. Inspect, clean/replace balls/seats
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