Page 33 of 63 Pages
Symptom Possible Cause Correction
6. Temperature safety
device is activated
during the ste. cycles
due to overheating.
6.1 Amount of water in
chamber is insufficient.
6.2 The thermostat is not set
to the right temperature.
6.3 Multi-purpose valve is
leaking. Water returns to
water reservoir.
6.4 Safety valve is leaking.
6.5 Air trap jet leaks
excessively.
6.1 Add water per para. 4.
6.2 Set the thermostat to the
right temperature.
6.3 Replace the valve (see
para. 11.9).
6.4 Replace the safety valve
(see para. 11.3).
6.5 Replace air jet (see para.
11.2)
7. Autoclave in STE.
position. Pressure safety
valve is activated and
heating continues.
7.1 Faulty pressure switch
(B10) does not stop
heating when reaching
required temp.
7.2 Pressure safety valve is
faulty.
7.1 Fix or replace the
pressure switch (B10).
7.2 Replace the Pressure
safety valve.
8. Dry operation does not
work.
8.1 Dry microswitch MSw2
not actuated or faulty.
8.2 Timer board faulty.
8.1 Replace microswitch.
8.2 Replace timer board.
9. Door handle cannot be
turned counter clockwise
for opening.
9.1 Door pin set in groove.
9.2 Door locking system stuc
or bellows damaged.
9.1 Slightly turn handle in
closing direction
(clockwise), then attempt
to open.
9.2 If problem persists, refer
to “Pressure Door Lock
System” in the service
section. After opening
the door, replace the
bellows.
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