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15
GB
4. Troubleshooting
Disconnect the appliance from the power mains before all repair work.
Only authorized customer service personnel may inspect electrical components.
In this chapter, we would like to give you some
hints on dealing with malfunctions yourself.
In all other cases or in the case of electrical faults,
please contact the authorized customer service.
4.1
Unit does not start
·
Check mains voltage.
·
Check connection cables for damage.
·
If the motor has overheated, allow the unit to
cool down. Then switch on again with the unit
switch.
·
Contact customer service if there is an
electrical malfunction.
4.2
Unit does not reach operating
pressure
·
Set three-way nozzle to “High Pressure“.
·
Clean/replace three-way nozzle.
·
Clean sieve in the water connection.
·
Deaerate the unit.
·
Check water supply flow rate.
(see Technical Data)
·
Check all pump supply lines for leaks or
blockages.
·
Contact customer service if required.
4.3
Pump Leaks
·
3 drops per minute are permissible. In the
case of more serious leakage, you should
contact the authorized customer service.
4.4
Pump knocks
·
Check all supply lines, even the detergent
system, for leaks.
·
Deaerate unit.
·
Contact customer service if required.
4.5
No detergent intake
·
Set three-way nozzle to “Low Pressure“.
·
Check detergent intake hose and filter for
leaks or blockages and clean.
·
Clean/replace the check valve at detergent
intake-hose connection.
·
Clean the non-return valve on the pump head
and the connection for the detergent suction
hose.
·
Contact customer service if required.
Summary of Contents for HD 1090
Page 1: ...5 956 676 A 2003483 05 02 HD 1090 www karcher com...
Page 3: ...A C B...
Page 60: ...58 GR 1 1 3 3 3 85 mm 1a A B C 1 mm 1 2 3 SERVOPRESS 4 5 6 7 8 9 10 11 12 13 14 15 16 1 1 1 2...
Page 61: ...59 GR 1 6 1 1 4 10 m 1 5 mm2 30 m 2 5 mm2 1 5 1 2 638 270 4 440 238...
Page 63: ...61 GR 2 2 5 2 6 0...
Page 64: ...62 GR 3 3 4 1 3 5 3 1 3 3 2 3 3 500...
Page 65: ...63 GR 4 4 1 4 2 4 3 3 4 4 4 5...
Page 66: ...64 GR 5 1 5 2 5 3 SERVOPRESS 5 4 5 5 5...
Page 124: ...122 1 1 3 3 85 1 A 1 1 2 3 Servopress 4 5 6 7 8 9 10 11 12 13 14 15 16 1 1 1 2...
Page 125: ...123 1 1 4 10 1 5 2 30 2 5 2 1 5 DIN 1988 o 6 412 578 1 2 638 270 4 440 238 1 6...
Page 127: ...125 2 2 5 2 6 0...
Page 128: ...126 3 3 1 3 3 2 3 3 500 3 4 o 1 3 5...
Page 129: ...127 4 4 1 4 2 4 3 4 4 4 5...
Page 130: ...128 5 1 5 2 5 3 5 4 5 5 5...
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