Kärcher BPP 3000/42, Руководство пользователя

Страница: 19 / 80

– 7
Pump switches
itself off and
back on (BPP
4000/48 and
BPP 4500/50) Thermal protection fuse has
switched the pump off to pro-
tect from overheating or turned
it back on after it has cooled
off. In order to prevent a repetition, the
system should be checked for leaks
and sealed.
Motor starts up
immediately af-
ter switch off Pressure is not retained in the
system Check connections including sealings
and control the water outlet.
The smallest of leakages can affect
the operation adversely.
Air pressure in the storage
boiler is too low. Fill storage boiler with 2.0 bar. Refer
to Chapter "Maintenance" Figure A
Backflow valve does not close
properly Check backflow valve on suction side.
Membrane in pressure tank is
defective Replace membrane
Pump trans-
ports is reduc-
ing or
transported
quantity is too
low Suction filter or backflow valve
contaminated Clean suction filter or backflow valve
The quantity transported by
the pump depends on the
transport height and the con-
nected periphery Keep max. flow height, see technical
data. If necessary, select a different
hose diameter or hose length.
Pre-filter is dirty Remove the pre-filter and clean it un-
der flowing water.
Vibrating sound
while taking out
water Membrane in pressure tank vi-
brates Noise caused by operations and the
noise can be reduced by reducing the
pressure in the air filling of the storage
tank.
Fault Cause Remedy
Our Kärcher branch will be pleased to help you further in the case of questions or faults.
See address on the reverse.
19 EN