Troubleshooting
Original operation manual
HIGH PRESSURE CLEANER
HPC_BADBK_en_1805 • rs
37
7 Troubleshooting
Fault
Possible cause
Remedy
High pressure pump does
not work
Compressed air supply
interrupted
Check compressed air supply
Suction filter clogged
Clean suction filter
Suction hose or suction pipe
clogged
Clean suction hose and / or
suction pipe
Ball valve clogged
Disassemble and clean fluid
pump
Air motor defective
Notify
WIWA
customer service
High pressure pump runs
consistently, but does not
suction any material
Ball sticks in the inlet valve
(dried material)
Lift the ball in the inlet valve
through the inlet hole, therefore
releasing it
Screw connection of the suction
hose or suction pipe leaking
Tighten screw connection of the
suction hose or suction pipe,
re-seal the screw connection if
necessary
Suction filter clogged
Clean suction filter
High pressure pump runs
inconsistently and the
output has decreased
Valves dirty
Clean fluid pump and possibly
leave standing in thinner
Valves, packings or piston rod
worn
Replace worn parts
Conveying pressure too low
Increase air inlet pressure
Suction filter clogged
Clean suction filter
Air motor defective
Notify
WIWA
customer service
High pressure pump
runs when high pressure
cleaner gun is closed
Valves, packings or piston rod
worn
Replace worn parts
Air motor freezes
Number of strokes is too high
Reduce air inlet pressure
High humidity
Empty water separator more
often
Although the pressure
gauge displays pressure,
no cleaning solution
escapes when the high
pressure cleaner gun is
open
Spray nozzle clogged
Clean spray nozzle