Kärcher HD 20/15-4, Руководство по обслуживанию

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English 5.906-494.0 Rev. 01 (04/11)

The resistance to spray water is ensured by a seal
on the shaft.

Loosen the 4 fastening screws.

Disconnect the cable connections.

Remove the appliance switch.

Assemble it back in the reverse sequence.
1 Protective conductor connection
2 Measuring coil
3 DIP switch
4 Measuring coil
5 Fuse 1.0 AT
6 Terminal strips
7 Indicator lamp connection
The electronics can only be replaced as one com-
plete unit. Prior to the replacement, check the cable
connections, connected components and fuses.
Connect power supply and control wires according to
the circuit plan.
Position of the DIP switches:
Display of the indicator lamp:
Switch-off after 30 minutes of continuous opera-
tion or continuous break:

Indicator lamp is blinking green

Machine switches off and locks up, if there is no
signal change from the pressure switch after an-
other 30 minutes.

A signal change will restart the time.

DIP switch 4: OFF = without switch-off, ON = with
switch-off.
Leak

1 blink red.

Switch-off and locking of the machine after 10
short starts (less than 2 seconds) due to a leak.

DIP switch 3: OFF = without switch-off, ON = with
switch-off.
Winding protection contact

blinks red twice:

Switch-off and locking of the machine, if the wind-
ing protection contact opens.
Over or under voltage, current asymmetry

blinks red thrice:

Switch-off and locking of the machine in case the
secondary voltage of the control transformer is
less than 17 volts AC (under voltage).

Switch-off and locking of the machine in case the
secondary voltage of the control transformer is
more than 37 volts AC (over voltage).

Switch-off and locking of the machine in case of a
current difference on the transformers of more
than 10 A for two seconds.
Overcurrent

Switch-off and locking of the machine in case of an
over voltage of 42 A on one of the transformers.
One-phase operation

DIP switch 1: ON = one-phase appliance, OFF =
three-phase appliance.

In the one-phase appliance, only one transformer
is used.
5.5.3 Motor protection electronics
5.5.4 Functional description of the motor protec-
tion electronics:
Switch Position Meaning
1 OFF 1-phase appliance
2 ON Trailing time 30 seconds
3 ON Leak detection
4 ON Switch off after 30 minutes of
continuous operation / pause.
Blinking Colour Meaning
-- Green Operation, voltage present, no
faults
Dura-
tion Green 30 minutes of continuous opera-
tion, continuous pause
1x Red Leak in the system
2x Red Winding protection contact was
triggered
3x Red Over or under voltage, current
asymmetry
4x Red Overcurrent