Troubleshooting; Maintenance Intervals - Kärcher HDS 7/11-4 M Instruction Manual

Maintenance intervals

Weekly
 Clean the sieve in the water connection.
 Clean the fine filter.
 Check oil level.
Caution
In case of lacteous oil inform Kärcher cus-
tomer service immediately
Monthly
 Clean sieve in the water shortage safe
guard.
 Clean filter at the detergent suck hose.
After 500 operating hours, at least annu-
ally
 Oil change.
At least every 5 years, recurring
 Perform the pressure test as per manu-
facturer's instructions.
Maintenance Works
Clean the sieve in the water connection
 Take out sieve.
 Clean sieve in water and reinstall.
Cleaning the fine filter
 Unpressurize the appliance.
 Unscrew the fine filter from the pump
head.
 Remove the fine filter and the filter insert.
 Clean the filter with clean water or com-
pressed air.
 Reinstall in reverse sequence.
Clean sieve in the water shortage safe
guard
 Loosen covering nut and take off hose.
 Take out sieve.
Note: If necessary turn in screw M8 appr. 5
mm inwards and therewith pull out sieve.
 Clean sieve in water.
 Push sieve inwards.
 Put on hose.
 Tighten covering nut firmly.
Clean filter at the detergent suck hose
 Take out detergent suck supports.
 Clean filter in water and reinstall.
Oil change
 Ready a catch bin for appr 1 Litre oil.
 Loosen release screw.
Dispose of old oil ecologically or turn in at
a gathering point.
 Tighten release screw.
 Fill oil slowly up to the MAX marking.
Note: Air pockets must be able to leak out.
For oil type refer to technical specifica-
tions.

Troubleshooting

Danger
Risk of injury by inadvertent startup of ap-
pliance and electrical shock.
First pull out the plug from the mains before
carrying out any tasks on the machine.
Indicator lamp pump
1x blinking
Lack of oil
–
 Replenish oil.
2x blinking
Leak in the high pressure system
–
 Check high pressure system and con-
nections for tightness.
3x blinking
Water shortage
–
 Check water supply, check connec-
tions.
4x blinking
Obstructed reed switch in the water
–
shortage safe guard.
 Check water shortage safe guard.
– 10
EN 33