21. Control unit
21
7
438 9145-21/03
02.38
Service
Manual
Rear control unit
Main power switch Q1
The main power switch interrupts all received
power phases and is situated on the outside of
the connection box cover.
The cover cannot be removed unless the main
power switch is turned to the 0 position.
The received voltage supply is connected to the
lower connection block row of the main power
switch or, alternatively, to the input connection
block.
Heating contactor K21
This contactor is only featured on machines with
electric heating.
It activates the three heating elements at the
front, lower part of the outer drum. It is controlled
by I/O card 1 output X8.
Heating contactor K22
This contactor is only featured on larger
machines with three heating elements, with each
element having two cores.
It activates the three heating elements at the
front, lower part of the outer drum. It is controlled
by I/O card 1 output X8.
Main power switch Q 1
Heating contactor K21
Voltage supply inputs
5239
Heating contactor K22
Connection block
Heating contactor K21
Voltage supply inputs
5364
Heating contactor K-22
Model with main power switch
Model with connection block
7
Fig.
7
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