Kärcher SB MB, User Manual

Page: 73 / 424

English 73
Malfunctions on the high-pressure pump
Malfunctions in the detergent supply
Malfunctions on the wheel cleaner / intensive foam
1
Sieve
1
Node piece
3
Throttle for wheel cleaner (0.6 mm) with check
valve
4
Throttle for intensive foam (1.3 mm) with check
valve
5
Compressed air input with check valve
6
Foamer
7
Check valve
8
High pressure outlet
Malfunctions on the compressor
Malfunction Possible cause Rectification By whom
Uneven water jet on the
high-pressure gun High-pressure nozzle clogged Replace the high-pressure nozzle. Operator
Water supply volume too low Check the water supply volume (see "Technical data"). Operator
Suction hose kinked Check the suction hose. Operator
Reduced pressure at the
high-pressure pump High-pressure nozzle worn out Replace the high-pressure nozzle. Operator
Incorrect high-pressure nozzle in-
stalled Replace the high-pressure nozzle (for size, see "Technical data"). Operator
Water supply volume too low Check the water supply volume (see "Technical data"). Operator
Flush the solenoid valve and check the solenoid valve water quality. Check the
float valve. Customer Service
High-pressure pump does
not reach pressure High-pressure pump sucking air from
an empty detergent tank Refill with detergent. Vent the suction line (if necessary, briefly squeeze the suction
hose to the pump several times during operation to accelerate the venting pro-
cess). Operator
High-pressure line to washing station
leaking Check the high-pressure line, replace if necessary. Operator, Customer
Service
Pressure relief valve incorrectly adjust-
ed or leaking Check the pressure relief valve, repair. Customer Service
High-pressure pump
knocking, pressure gauge
fluctuates greatly High-pressure pump sucking air Check the water and detergent suction lines for leaks. Operator
Is the detergent container empty? (see above). Operator
Vibration damper defective Replace the vibration damper. Operator
Valve in the pump head defective or
dirty Replace defective valves. Customer Service
Malfunction Possible cause Rectification By whom
Insufficient or no deter-
gent delivery Filter or hose clogged Clean the filter or the hose. Operator
Detergent hose leaking Replace the hose. Operator
Dosing pump incorrectly adjusted or
defective Check the dosing pump setting. Operator
Check the functionality of the dosing pump. Customer Service
Condensation water in the dosing
pump. Drain the condensation water from the compressor pressure tank. Operator
Malfunction Possible cause Rectification By whom
Insufficient or no water/
detergent delivery The sieve in the water input is contam-
inated Clean the sieve. Operator
Nozzle insert in injector is clogged Clean the nozzle insert. Operator
Throttle blocked in node piece Clean the parts. Operator
Foamer clogged in the node piece Blow out the node piece with compressed air or replace the foamers. Operator, Customer
Service
Malfunction Possible cause Rectification By whom
Compressor switches on
and off frequently. Condensation water in the pressure
tank is too high. Drain the condensation water from the compressor pressure tank. Operator, Customer
Service