D U P
L
I C
A
T
E
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Electrical
Troubles
C 420 R
POWER SUPPLY
When closing main
Input voltage on QS1
switch QS1 the
Main fuses FU1
control panel remains Auxiliary fuses FU2 - FU3
OFF
5/24 Vdc on GS1
ALARMS
Par. 6-3
DIGITAL
Readout off
Check as per par. POWER
THICKNESS
SUPPLY
5 Vdc on GS1
Value steady
5 Vdc between terminals of
potentiometer RP1
Potentiometer RP1
Check for variable 5 Vdc be
tween points 3-7 on display
PN1
Thickness not true
Set minimum value on readout
(par. 7-5)
MOTORS
Overload alarms
Press the grey push-button to
restore the electronic thermal
cutout involved
Check for absence of mechani-
cal defects
Maintenance And Repair 7-8
