Silca Unocode 399 Plus Operating Manual page 71

Operating manual - English
7.5 C
HECKING AND
Fuses should be checke
multimeter, etc.) as they may appear to be in good condition
even when they are elec trically faulty. Fuses must always
be replaced with the same amper age 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
machine, next to the main
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
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 clock-
wise.
Fig. 49
/
OR REPLACING FUSES
d with a tester ( ohmmeter,
socket on the back of
switch (f ig. 4 8). These fuses
to open
to close
Copyright S ilca 2010
the
the
electronic circuit board
Unocode 399 PLUS
Fig. 48
F1
F4
F3
F2
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