WAGNER EP 3000 Operating Manual page 35

Malfunction checklist
Fault
The unit sucks coating
material, pressure is built
up, however pressure
drops drastically when
the spray gun is opened
(low performance)
The unit sucks coating
material but no material
comes out of the return
hose
Irregular pressure build
up
Pressure fluctuations
GB
Possible cause
1. No tip on the spray gun
2. Tip bore too large
3. Intake filter blocked
4. Spray gun filter insert blocked
5. Spray gun filter insert too fine for
coarse material
6. Intake hose not screwed tightly
onto intake valve
7. Intake hose leaky
8. Outlet valve parts worn
9. Intake valve parts worn
10. High-pressure filter blocked
11. Overall hose length too long
1. Return hose blocked
1. Pressure switch defect
1. High-pressure hose unsuitable
2. Suction hose loose at intake valve
3. Intake valve leaky or dirty
4. Outlet valve dirty or parts worn
33
Remedy
1. Use correct tip
2. Use smaller or new tip
3. Clean or replace filter
4. Clean or replace filter. Have
replacement filter ready
5. Use correct filter
6. Clean connection thoroughly and
tighten
7. Clean connection thoroughly and
tighten or exchange intake hose
8. Replace parts
9. Replace parts
10. Clean high-pressure filter
11. Shorten the length of the hose, use
original hose
1. Remove the pressure from the unit,
remove return hose and clean
1. Take to authorized Wagner service
point
1. Use special high-pressure hose
2. Thoroughly clean connection and
tighten
3. Dismantle intake valve. Clean or
replace parts
4. Dismantle outlet valve. Clean or
replace parts