Problem
Cause
Remedy
Pump runs, but does not build
Pressure control sleeve not
Set required working pressure
up the specified pressure
set correctly
Nozzle in spray head worn
Replace nozzle
Air in system
Vent system; briefly operate
machine without
high-pressure hose
Leak in high-pressure system
Seal high-pressure system
Pressure fluctuates or drops
Shortage of water
Turn on water tap, keep within
maximum suction head
(max. 0.5 m)
Water feed hose too long or
Use specified water
cross-section too small
feed hose
Water filter clogged
Clean water filter in pick-up
body and pump inlet
Pump draws air
Check intake line for leaks and
replace if necessary
High-pressure cups worn
Replace high-pressure cups
Pump does not run smoothly
Water feed temperature is
Reduce water feed temperature
too high
(see technical specifications)
Intake line is damaged,
Replace intake line
pump draws air
Intake / delivery valves of
Clean or replace valves
high-pressure pump
soiled or worn
Safety control block cycles after
Leak in high-pressure system so
Seal, clean and grease the
switching off the spray gun
that safety control block does not
safety control block
(constant audible switching sound),
switch over correctly and the
pump becomes hot
bypass does not open completely
Oil contains water
High-pressure cups worn
Replace high-pressure cups
Oil leak
Gaskets in high-pressure pump
Replace gaskets
worn
4.
SUMMARY OF POSSIBLE FAULTS
4.1
High-pressure pump
RE 140 K, 160 K
5
