16
4.3.2
Starting a sterilization cycle
Press the key
START/STOP
to start the selected cycle.
The programs
3
and
8
do not warrant the Class B sterilization; to start these types of cycle, hold down
the key
START
longer than 3 seconds
It is possible to program a delated starting of the cycle: hold on the
START
button longer than 8 sec-
onds, the display will show
HOUR DELAY
, using
UP
and
DOWN
select the time delay in hours than
push
START
; the unit will turn off indicating the residual time before to start; the chamber will cool.
It is
possible to delete this action turning on the unit with
POWER
For unwrapped solid instruments we recommend to use the cycle
3
In this way the sterilization time will be
faster, and power consumption reduced
.
The door is locked and stays locked throughout the cycle duration.
The sterilizer starts and runs the cycle phases automatically. The various steps of the cycle are microproces-
sor controlled and sequentially shown on the display; in this way the operator can monitor the progress of the
sterilization phases and the times.
Vacuum
phase
(water entry in the chamber and pre-vacuum pulses)
During this phase the microprocessor enables the vacuum pump and enters a water dose in the
chamber. The icon
Vacuum
is flashing. This phase will be repeated more times and should require 10
to 20 minutes depending on the chamber conditions and load type to be processed. This phase may
be slightly noisy.
Sterilize
Reached the preset parameter values, icon
Vacuum
turns off and Led
Sterilize
turns on. The display
time
starts the countdown marking the time remaining to the end of the sterilization phase.
The sterilization phase is followed by the decompression phase, the pressure decreases to 0. Again,
the display shows the countdown of the decompression phase. Based on our experiences, the decom-
pression time has been slightly extended in order to minimize the thermal shock consequent to the sta-
tus change of the steam.
Drying
Over the decompression phase,
Sterilize icon
starts to flash to signal the completion of the steriliza-
tion process. At the same time
Dry
turns on, signalling the start of the drying phase. Throughout this
phase, the chamber heaters keep the chamber warm according to a microprocessor-controlled logic,
the vacuum pump comes again into operation to eliminate the residual moisture. The display shows
the countdown of this phase. Follows the forced ventilation phase through the bacterial filter
– the dis-
play shows also the countdown of this phase.
End of the cycle
As soon as the drying is over,
Dry
turns off and
Ready
and
Sterilize
turn on. A 10-second alert signal
is generated to draw the attention by the operator. The chamber heaters are set at reduced power
(pre-heating, only if
ECO MODE
is not selected) until the door is open. The TIME display shows the to-
tal time of the cycle, the displays TEMP. and PRESS show respectively the current temperature and
pressure of the chamber.
At the end of cycle 3 or 8 only the Led
READY
will light and not
STERILIZE
to signal that
the cycle selected by the operator does not warrant a Class B sterilization
;
the display will
show the cycle counter.
