Pressure Does Not Build Up In The Appliance; Technical Specifications - Kärcher k 7.91 m Betriebsanleitung

Pressure does not build up in the
appliance
 Check setting at the spray lance.
 Appliance ventilation: Switch the appli-
ance on with the high-pressure hose
detached and operate (max. 2 minutes)
until the water exits the high-pressure
connection without bubbles. Switch off
appliance and reconnect high-pressure
hose.
 Check the water supply.
 Pull out the fine filter in water connec-
tion using flat-nose pliers and clean with
running water.
Appliance does not start, motor
hums
Cause: Voltage reduction due to weak
mains supply or when using an extension
cable.
 When switching on, first pull the lever of
the trigger gun and then switch the ap-
pliance switch to "I/ON".
Strong pressure fluctuations
 Clean high-pressure nozzle: Remove
dirt and debris from the nozzle bore, us-
ing a needle and rinse through with wa-
ter from the front.
 Check water flow quantity.
Appliance is leaking
 Slight leakage from the appliance pump
is normal. If the leakage increases con-
tact the authorized customer service.
No detergent infeed
 Use spray lance with pressure regula-
tion (Vario Power).
Turn the spray lance to "Mix" position.
 Detach spray lance from the trigger
gun. Work only with the trigger gun.
 Clean the detergent suction hose filter.
 Check the detergent suction hose for
kinks.
 Check the settings at the dosage regu-
lator for detergent.

Technical specifications

Electrical connection
Voltage
Connected load
Protection class
Protective class
Mains fuse (slow-blow)
Maximum allowed net im-
pedance
Water connection
Max. feed pressure
Max. feed temperature
Min. feed volume
Max. Suction height
Performance data
Working pressure
Max. permissible pressure
Water flow rate
Detergent flow rate
Recoil force of trigger gun
Dimensions and weights
Length
Width
Height
Weight, ready to operate with
accessories
Values determined as per EN 60335-2-79
Hand-arm vibration value
Uncertainty K
Sound pressure level L
Uncertainty K
Sound power level L
certainty K
WA
Subject to technical modifications!
– 12
EN
230-240
1~50
IP X5
0,320
+ j0,200
19,7 kg
<2,5
pA
pA
+ Un-
WA
V
Hz
2,6 kW
I
16 A
Ohm
Ohm
0,6 MPa
60 °C
11 I/min
0,5 m
14 MPa
16 MPa
8,8 I/min
0,2 I/min
21 N
349 mm
346 mm
869 mm
m/s 2
0,3 m/s 2
74 dB(A)
2 dB(A)
89 dB(A)
21