Silca Unocode 399 Plus Operating Manual page 71

Operating manual - English
7.5 C
HECKING AND
Fuses should be checked with a tester (ohmmeter, multimeter, etc.) as
they may appear to be in good condition even when they are electrically
faulty. Fuses must always be replaced with the same amperage and type
(rapid or delayed), as indicated in this manual.
There are 6 fuses in the UNOCODE 399 PLUS.
2 fuses: 4 Amps rapid (230V)
•
located next to the power socket on the back of the machine, next to the
main switch (fig. 48). These fuses protect the machine from power
surges and/or spikes in the electricity supply.
To check and/or replace the fuses proceed as follows:
1) turn the machine off and unplug it from its power supply cable.
2) use a flat screwdriver to open the flap covering the socket, remove
and check the fuses, replacing them if necessary.
4 fuses: F1, F2, F3 e F4
•
F1: 10 Amps delayed
- protects the cutter motor and its electronic controls (230V
a.c.)
F2: 6,3 Amps delayed
- protects the step motors and their electronic controls (+32V d.c.)
F3: 4 Amps delayed
- protects the logic control circuits on the microprocessor board (+5V d.c.)
F4: 2 Amps delayed
- protects the digital output circuits for the low voltage controls and the sensor inlets (+24V d.c.)
Situated on the electronic circuit board inside the base of the machine (fig. 49), protecting the board from short circuits.
To check and/or replace the fuses proceed as follows:
1) turn the machine off and unplug it from its power supply cable.
2) remove the bottom panel (chap., page 70).
3) check and, if necessary, replace the fuses in the way described below:
to remove the fuse:
- press the fuse cap with your fingers and turn it counter clockwise.
To fit the new fuse:
- carefully position the fuse back into place, then gently press the fuse cap downwards turning it clockwise.
Fig. 49
/
OR REPLACING FUSES
to open
to close
Copyright Silca 2016
Fig. 48
electronic circuit board
Unocode 399 PLUS
F1
F4
F3
F2
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