Silca UC 199 - Checking and Replacing Fuses

7.8 CHECKING AND REPLACING FUSES
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 UC199.
• 2 fuses: 5 Amps rapid (230V) - 10 Amps rapid (100V)
Located next to the power socket on the back of the machine (Fig. 81). 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atscrewdrivertoopentheapcoveringthesocket,removeandcheckthefuses,replacingthemif
necessary.
Fig. 81
• 4 fuses: F1, F2, F3 and 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. 82), protecting the board from short
circuits. To check and/or replace the fuses proceed as follows:
3) turn the machine off and unplug it from its power supply cable.
4) remove the bottom panel (Ch. 7.4).
5) check and, if necessary, replace the fuses in the way described below:
to remove the fuse:
pressthefusecapwithyourngersandturnitcounterclockwise.
Totthenewfuse:
carefully position the fuse back into place, then gently press the fuse cap downwards turning it clock wise.
Operating Manual UC199
Copyright Silca 2012
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