Trouble-Shooting; Cleaner Does Not Run; Cleaner Does Not Come Up To Pressure - Kärcher HD 1050 Service Handbook

HD 1050
C. Trouble shooting

1. Cleaner does not run

1.1 Motor does not run
Check main fuse or circuit braker (16 Amp
delayed action).
Check voltage at power socket and compare
the voltage on the nameplate.
Check the motor protective switch on the
cleaner.
1.2 Circuit breaker trips or fuse blows
Check main fuse or circuit breaker (16 Amp
delayed action).
Extension cable has too small a conductor cross-
section.
Extension cable not unwound from drum.
1.3 Cleaner switches off after running for only a
short period of time
Check current consumption.
Check the setting of the overload trip on the
motor protective switch (see technical data).
Check current consumption.

2. Cleaner does not come up to pressure

2.1 Inadequate water supply
Check water supply hose (not less than
3/4˝ i.d.).
A supply of at least 16 litres of water per min.
must be available.
2.2 Pump not vented of air
Switch off the cleaner and keep the trigger of
the hand gun pulled until a steady flow of water
emerges. Then switch the cleaner on again.
2.3 Pump is sucking air
Turn off the water-supply valve and check the
hose connection.
If you are drawing water by suction from a tank,
the suction head should not be higher than
1 metre (39˝) with cold water. Fill the suction
hose with water before operation.
2.4 High pressure nozzle worn (bore too large)
Replace the high pressure nozzle (pencil jet
055,fan jet 25055) and check the pressure.
If the pressure is still too low, the fault is in the
high pressure pump (measure pump delivery).
2.5 Water inlet filter blocked.
Remove the filter, clean it and reinstall.
Trouble shooting
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