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5.3 Displayed Error Messages and Safety Measures
Low Temp. Message is displayed, FAIL indicator lights and cycle is
aborted, if the temperature drops for more than 5 seconds
below the sterilization temperature.
Low Heat Message is displayed and sterilization does not start if the
autoclave has not reached sterilization temperature after
heating for 30 minutes (except in slow exhaust program), and
60 minutes for the slow exhaust program.
High Temp. Message is displayed, FAIL indicator lights and the cycle is
aborted in one of the following cases:
If the temperature rises 3°C (6°F) above the sterilization
temperature during the sterilization stage.
If the temperature sensor is damaged, this message
appears during the HEAT stage.
Low Pres. Message is displayed, FAIL indicator lights, and the cycle is
aborted if the pressure drops for more than 5 seconds below
the pressure correlated to the sterilization temperature.
High Pres. This message is displayed, FAIL indicator lights, and the cycle
is aborted if pressure rises above the pressure correlated to the
sterilization temperature +3°C (6°F) for more than 5 seconds.
Man. Stop Message is displayed and the FAIL indicator lights after the
STOP key is pressed for longer than 1 second.
Power Dn Message is displayed if a power failure occurred during the
STERILIZATION stage. When power resumes, the system
automatically returns to the point of power failure. This
message is displayed for several seconds and the printer prints
POWER DN. If the temperature does not fall below the
sterilization temperature, sterilization resumes automatically.
When power returns, and if temperature falls below the
sterilization temperature, the cycle will stop and exhaust will
be performed according to the program requirements the
system returns to the heat stage and the POWER DN message
is displayed and printed.
If a power failure occurred during Program 6 (slow 121), the
system does not allow fast exhaust (as exhaust valve is
normally closed) during a power failure or when power is
back on.
If a power failure occurs during the HEAT stage, heating
resumes (provided there is enough water in the chamber). If
not, the cycle aborts. Exhaust stages automatically resume
operation once the power is back on.
Door Unlock Message is displayed and the DOOR LED indicator flashes if
the door is improperly closed. The START button should be
pressed to start the desired cycle. If the door accidentally
opens during any stage of the cycle, the same message and
indicator appears, and the system reacts as if the
START/STOP key was pressed.