Device does not reach required pressure
Check the size of the nozzle and compare with the
required size specified in the "Technical data" sec-
tion.
Vent the device, see section "Venting the device".
Clean the sieve in the water connection.
Check the water supply volume and compare with
the required volume specified in the "Technical data"
section.
Clean the nozzle.
Contact Customer Service if necessary.
Pump leaking
Up to 3 drops of water per minute are permissible.
In case of more serious leaks, have the device
checked by Customer Service.
Pump knocking
Check the water supply line for leaks.
Vent the device, see section "Venting the device".
Contact Customer Service if necessary.
Detergent dosing volume too low
Refill the foam nozzle cup.
Electrical connection
Voltage
Phase
Frequency
Power rating
Degree of protection
Power protection (slow-blow-
ing)
Extension cable, 30 m
Water connection
Feed pressure (max.)
Input temperature (max.)
Input amount (min.)
Suction height (max.)
Device performance data
Nozzle size of standard nozzle
Water flow rate
Maximum flow rate
Operating pressure
Operating pressure (max.)
High-pressure gun recoil force N
Dimensions and weights
Weight
Length x width x height
Oil volume
Oil type
Technical data
HD 6/15-4 M
Classic
220 - 240
~
1
Hz
50
kW
3.4
IPX5
A
15
2
mm
2.5
MPa
1.0 (10)
(bar)
°C
60
l/h
900 (15)
(l/min)
m
1.0
l/h
(l/min)
035
l/h
600 (10)
(l/min)
l/h
650 (10.8)
(l/min)
MPa
3.5 (35)...
(bar)
15 (150)
MPa
19 (190)
(bar)
29
kg
52
mm
740x528x952 740x528x952 740x528x952 740x528x952 740x528x952
ml
430
15W40
Plug a larger blender onto the suction hose.
Check the suction hose and foam nozzle for deter-
gent deposits. Remove deposits using lukewarm
water.
Accessories and spare parts
Only use original accessories and original spare parts.
They ensure that the appliance will run fault-free and
safely.
Information on accessories and spare parts can be
found at www.kaercher.com.
The warranty conditions issued by our sales company
responsible apply in all countries. We shall remedy pos-
sible malfunctions on your device within the warranty
period free of cost, provided that a material or manufac-
turing defect is the cause. In a warranty case, please
contact your dealer (with the purchase receipt) or the
next authorised customer service site.
(See overleaf for the address)
HD 7/11-4 M
HD 7/18-4 M
Classic
Classic
220 - 240
380 - 415
1
3
50
50
2.9
4.3
IPX5
IPX5
13
16
2.5
2.5
1.0 (10)
1.0 (10)
60
60
1000 (16.7)
1000 (16.7)
1.0
1.0
050
038
700 (11.7)
700 (11.7)
750 (12.5)
750 (12.5)
3.5 (35)...
3.5 (35)...
11 (110)
18 (180)
15 (150)
22 (220)
29
37
52
58.2
430
430
15W40
15W40
Warranty
HD 9/20-4 M
HD 10/21-4 M
Classic
Classic
380 - 415
380 - 415
3
3
50
50
6.5
6.9
IPX5
IPX5
16
16
2.5
2.5
1.0 (10)
1.0 (10)
60
60
1200 (20)
1300 (21.7)
1.0
1.0
047
052
900 (15)
1000 (16.5)
950 (15.8)
1050 (17.5)
3.5 (35)...
3.5 (35)...
20 (200)
21 (210)
24 (240)
25 (250)
50
57
63.5
67
580
580
15W40
15W40