WAGNER Unica 4-270 Translation Of The Original Operating Manual page 32

EDITION 09 /2015
OPERATING MANUAL
Troubleshooting and solution
Problem
The pump works
regularly but does not
suck the working fl uid
The pump runs when
the gun is closed
Loss of power due to
ice formation in the
pneumatic motor
IMPORTANT:
In all cases where pump parts or pressurized pipes need to be disassembled, follow the
pressure release procedure as described in Paragraph 5.2.2 before performing maintenan-
ce.
If the problem is not listed above consult your WAGNER Service Center.
PART NO. ZZB028ENG
Cause
• The connections on the suction
system leak and the pump sucks
air
• Obstructed suction fi lter
• Obstructed suction valves
• Packings, valves worn
• Presence of large quantities of
condensate in the compressed air
supply circuit
Unica 4-270 N
Solution
• Tighten the fi ttings and remove leaks
• Clean fi lter
• Clean the pump fl uid section with
detergent and if necessary let the
detergent act for some time (in case,
purge the device)
• Replace parts
• Install a drier in the compressed air
supply circuit or, if already existing, check
its performance
.
32