CSPP Capacitor Charging Unit Operation Manual
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Page 38 of 59
Before carrying out the following checks, remove AC power to High Voltage Charger
by disconnecting the yellow crimp connectors on the large relay located below and
to the left side of the Control Board. This will disable the 4kV supply.
POWER SELECT SWITCH SHOULD BE LEFT ON 50 JOULES
This section is to be carried out by trained personnel only and undertaken in a safe
environment
OFF / ON circuit breaker
snaps open on power up.
Check for S/C between
live / neutral and ground.
Replace mains filter if
required.
Check with ohm meter
mains wiring to unit.
Circuit breaker OK, no
LEDs on front panel.
Fuse F1 open circuit
(O/C).
Remove LHS panel and
measure O/P from PSU
located to the rear of
unit.
Check internal fuse. If
faulty, replace. If OK
replace board.
Problem with control
board.
Remove PL1 (12V I/P to
board) and
measure12VDC on plug.
If 12VDC is present
replace control board.
Problem with front panel
board.
Check for 12VDC on
board.
Broken connection(s)
between control and
front panel boards.
Using DVM set to ohms
range, check for
continuity of wiring.
Fault and Interlock LEDs
stay lit after reset button
pressed.
Top cover microswitch
not closed.
Replace lid and screw in
place.
Re-check after lid is
replaced.
High voltage connector
not fully mated.
Lid of junction box (if
being used) not in place.
Also no front panel fans
operating.
Check fuses F1 and F2
with ohm meter.
Remove LHS panel.
Measure 240VAC with
meter on Pins 1 & 2 of
PL1. Measure 12VDC
on PL1 Pins 8 (+ve) and
9 (-ve).
Replace if DC voltage is
not present.
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