Page 71 of 101 pages
10.3 Troubleshooting
Symptoms
Possible causes check-ups
and tests
Corrections
1. Control unit not
energised. No displays and
lights on the front panel.
1.1
The control circuit
breaker switched off.
1.1
Check and switch on
the circuit breaker.
1.2
The power switches
on the front panels of
the autoclave or of the
steam generator are
off, or defective.
1.2
Replace the defective
switch.
2. Steam generator does
not operate.
2.1 Water pump defective
or blocked.
2.1 Repair or replace
pump. Replace motor.
2.2 Blocking or low water
pressure in the pump
circuit.
2.2 Adjust water pressure,
ensure a free
circulation of water.
2.3
Circuit breaker trips,
because of overload or
damage.
2.3
Check and remove the
overload or replace
circuit.
2.4 Upper electrode short-
circuited.
2.4 Clean or replace upper
electrode.
2.5
Electronic
pressure
transducers or
measuring circuits
faulty or out of
calibration.
2.5 Check,
calibrate
pressures switches or
replace them.
2.6 Lower electrode dirty
or rusted.
2.6
Clean or replace the
electrode.
2.7
Circuit breakers in the
heaters circuit
switched off or
damaged.
2.7
Turn off or replace the
circuit breakers.
2.8
Contactor
controlling
the heat up current is
damaged.
2.8
Check the cause and
replace contactor.
2.9
Control system trouble. 2.9
Replace boards.
2.10 Heaters burnt out.
2.10 Replace defective
heaters, check if the
water level is
sufficiently high.
2.11 Solenoid or pneumatic
steam supply stuck or
defective.
2.11 Repair or replace
solenoid or pneumatic
valve.
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