SELMI TOP EX, Руководство пользователя и обслуживания

Страница: 39 / 55

Maintenance section
User and service manual
– TOP EX – Continuous tempering machine 37
6.6.1 Disconnection and reconnection of the motor
If the motor needs to be replaced an electrical
technician will need to intervene. He will firstly have to
disconnect the damaged motor and then connect the
new motor.
Follow these steps to disconnect the motor:
1) Remove the lateral fixed protective panels
following the instructions given in section 6.5.1
2) Remove the screws of the connection terminal
protective box
3) Disconnect the wires paying attention to the
terminal each wire is connected to. You will
need to remember this when you come to
reconnect the wires
4) Free the cable from the cable holder that holds
it to the motor and pull it out
Attention
Never connect the power supply when one or
more of the electrical components of the
machine are disconnected and the conductors
are not correctly isolated.
To connect the new motor follow these steps:
1) Make sure that the electrical characteristics of
the new motor are compatible with the original
one’s
2) Unscrew the protective box of the connection
terminal
3) Reinstate the motor power cable into the
appropriate cable holder
4) Tighten the cable holder until it has a good grip
of the cable, paying attention not to use too
much force, as there is danger of damaging
the cable or the cable holder
5) Reconnect the wires into the connection
terminal
6) Remount the protective box of the connection
terminal and fix it in place with the screws.
6.6.2 Replacement of fuses
To replace the fuses act as follows:
1) Unplug the machine
2) Open the electric panel by releasing the lateral
hooks
3) Remove each fuse from the power board and
individually check their continuity until the
faulty one is found. Remove only one fuse at a
time; once checked, if the fuse is not faulty, put
it back in place before removing the next one.
4) Replace it with a new fuse having the same
electrical characteristics and dimensions
5) Check that the fuse caps have been correctly
put back on
6) Close the electric panel and check that the
machine is working correctly
Warning
When checking the continuity of the fuses make
sure that they are not on a conducting surface.
Warning
Repeated blowing of fuses could be caused by
problems related to devices installed on the
machine;
in this case contact Technical
Services.
6.6.3 Replacement of the display board
To replace the display board (see photo on page 4,
item 1) follow this procedure :
1) Unplug the machine
2) Open the upper protective panel following the
instructions given in section 6.5.1
3) Remove the display board connecting cable
and the connections to the probes, making
sure to label the position of each cable
4) Unscrew the display board and remove it
5) Slot in the new display board and tighten it into
place as it was originally
6) Reconnect the wires to the probes, making
sure to reinsert the wires in the correct
terminals and tighten the screws
7) Reinsert the display board connecting cable