Karcher HDS-C 8-15 E: Function

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1 Water connection (by customer)

2 Pre-filter (at the site)

3 condensing electro motor

4 swimming valve

5 Dosing container softener (RM 110, op-

tional)

6 Swimming container fresh water

7 Cleaning agent container

8 Dosage valve for detergent

9 Cleaning agent valve

10 High pressure pump

11 Cleaning agent filter

12 Pressure switch ON

13 Manometer

14 Pressure tank

15 Pressure switch OFF

16 Overflow valve

17 Safety valve

18 Flow indicator

19 Temperature stop for exhaust gases

20 Burner inclusive flow-type heater

21 Flame indicator

22 Fuil valve

23 Fuil pump inclusive bypass valve

24 Fuel filter

25 Fuil container

26 Attemperator

27 Hand blowing gun

1 Water connection (by customer)

2 Pre-filter (at the site)

3 swimming valve

4 Dosing container softener (RM 110, op-

tional)

5 Swimming container fresh water

6 Warm water tank

7 Solenoid valve block warm/ cold water

8 Attemperator

9 temerature limiter

10 Heating element

11 Cleaning agent container

12 Dosage valve for detergent

13 Cleaning agent valve

14 High pressure pump

15 Overflow valve

16 ON/OFF pressure switch

17 Hand blowing gun

18 Pressure tank

19 Manometer

20 Cleaning agent filter

–

If the hand-spray gun is closed, so that 

the whole water flows back to the pump 

suck side, the pressure switch at the 

overflow valve shuts down the pump.

–

If the hand spray gun is opened, the 

pressure switch on the cylinder head 

turns the pump back on.

The overflow valve is set by the manufac-

turer and sealed. Setting only by customer 

service.

–

If the hand-spray gun is closed such 

that the whole water flows back to the 

pump suck side, the pressure switch 

shuts down the pump.

–

If the hand spray gun is opened again, 

the pressure switch switches on the 

pump again.

The overflow valve is set by the manufac-

turer and sealed. Setting only by customer 

service.

–

The safety valve opens, when the over-

flow valve resp. the pressure switch is 

broken.

The safety valve is set by the manufacturer 

and sealed. Setting only by customer serv-

ice.

–

The water shortage safeguard prevents 

the burner to be turned on when there is 

water shortage.

–

A sieve prevents the contamination of 

the safeguard and must be cleaned reg-

ulary.

–

The motor protection switch interrupts 

the electric circuit if the motor is over-

loaded.

–

The temperature stop switches off the 

machine when the waste gases have 

reached very high temperatures.

If the burner does not ignite or the flame ex-

tinguishes during operation, then the flame 

monitor switches off the fuel supply. 

Function

Flow pattern

HDS-C 7/11, HDS-C 9/15

HDS-C 8/15-E

Monitoring and safety devices 

Overflow valve with two pressure 

switches (HDS-C 7/11, HDS-C 9/15

Overflow valve with a pressure switch 

(HDS-C 8/15-E)

Safety valve

Water shortage safeguard

Motor protection switch

Exhaust temperature limiter (HDS-C 7/

11, HDS-C 9/15

Flame monitoring (HDS-C 7/11, HDS-C 9/

15)

21 EN