Karcher K 3.700 [21/258] Technical specifications

Karcher K 3.700 [21/258] Technical specifications
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You can rectify minor faults yourself with the
help of the following overview.
If in doubt, please consult the authorized cus-
tomer service.
Danger
Turn off the appliance and remove the mains
plug prior to any care and maintenance work.
Repair works may only be performed by the
authorized customer service.
Pull on the lever of the trigger gun; the de-
vice will switch on.
Check whether the voltage indicated on
the type plate corresponds to the voltage
of the mains supply.
Check the mains connection cable for
damages.
Check setting at the spray lance.
Remove air from appliance before operation.
Switch on the appliance without connec-
tion the HP hose (max. 2 minutes) and run
it until the water discharging from the HP
outlet is free of bubbles. Switch off appli-
ance and reconnect HP hose.
Check the water supply.
Pull out the sieve in the water connection
using flat-nose pliers and clean under run-
ning water.
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 appli-
ance switch to "I/ON".
Clean high-pressure nozzle: Remove dirt and
debris from the nozzle bore, using a needle
and rinse through with water from the front.
Check water flow quantity.
Slight leakage from the appliance pump is
normal. If the leakage increases contact
the authorized customer service.
Use spray lance with pressure regulation
(Vario Power).
Turn the spray lance to "Mix" position.
Check the settings at the dosage regula-
tor for detergent.
Check the detergent suction hose for
kinks.
Troubleshooting
Appliance is not running
Pressure does not build up in the appli-
ance
Appliance does not start, motor hums
Strong pressure fluctuations
Appliance is leaking
No detergent infeed
Technical specifications
K 3.700
K 4.700
K 5.700
Water connection
Max. feed temperature °C 40
Min. feed volume I/min 10
Max. feed pressure MPa 0.8
Max. Suction height m 0.5
Electrical connection
Voltage *GB
1~50 Hz
V 230-240
Connected load kW 1.8 1.9 2.1
Mains fuse *GB
(slow-blow)
A13
Protective class I
Protection class IP X5
Performance data
Working pressure MPa 11 12 12.5
Max. permissible pres-
sure
MPa 12 13 14
Water flow rate I/min 6.3 6.7 7.5
Dimensions and weights
Length mm 876
Width mm 325
Height mm 285
Weight, ready to oper-
ate with accessories
kg 14.8 14.8 15.3
Detergent flow rate I/min 0 - 0.3
Recoil force of trigger
gun
N 15
17EN

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