30 -
OPERATION
To reset certain types of faults, a technician must first activate the key
switch for Stepping / Authorized users.
Repeated alarms
If the process repeatedly hangs at the same alarm point, call a technician
to step the process to the end. If several faults occur, only the last one is
displayed.
Alarm printout in process documentation
Where a main fault causes one or more secondary faults, the operator
panel shows on the most recent fault. If the unit has a printer or similar,
all faults are printed out, together with the time when they occurred.
Doors
When a fault has occurred, the unloading door of a double-ended steri-
lizer will not open. Exceptions are errors that occur so late in the process
that unlocking of the door has begun.
The door can only be opened when the correct password has been
entered. For further information, see the menu description in the Con-
trol unit chapter.
Steam generator alarms
Alarms from the steam generator may be due to the operating pressure
being exceeded or the water level in the steam generator falling below
the minimum. Low water level may also indicate that the boiler water
quality is beginning to be very poor and that the water should therefore
be emptied.
Call a service technician to analyse and correct the fault, with the aid of
the description in the Advice and instructions chapter in the TECHNI-
CAL MANUAL.
•
Press
More
.
•
Press
Ack.
to acknowledge the alarm, by which the
Alarm indicator goes out and the red background
disappears.
In certain phases, sensor faults prevent stepping of the
program.
Stepping may only be done by trained personnel.
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