
ENG 2018-11-02 Page 9 of 25
Heating up
Switch on the autoclave by turning the white timer knob clockwise to its always-on position.
If timer knob is set a position for continuous operation in this case the autoclave has to be switched off
manual. The time can be set after temperature is reached with timer. In this case the autoclave
switched off automatically after time run off.
15 – 20 minutes after switch on steam escapes through the steam release cock.
To insure sufficient air removal let the steam release cock open for 10 minutes than close it by turning
the black knob clockwise. Saturated steam will be built.
Now pressure and temperature rise according adjustment.
Sterilization / Holding time
The sterilization time starts when temperature is reached. Steam could escape through the
pressure control valve. The indicator on the manometer should stay within the specified limits (red
or blue marking).
You can now use the timer to set the holding time you need (e.g. 15 minutes to sterilize 500ml
culture media at 121°C)
Pressure regulation is done by the pressure control valve, steam escapes in regular intervals.
fter the end of sterilization time switch off by turning the timer knob to OFF. If you have used the
timer function, the unit switches off automatically.
If timer function is not active, you have to switch off manual. Turn the knob to OFF.
If timer function is not active don’t forget to switch off, the autoclave could cook dry and overheat.
Make sure that enough water is in the chamber.
Energy is controlled by the thermostat. Make sure that the same temperature on valve and knob for
thermostat on the base is set, they work together.
On CertoClav Classic autoclaves energy is controlled by the thermostat. Make sure that the same
temperature on valve and knob for thermostat on the base is set, they work together.
Cooling down
Check that the manometer whether the black indicator shows to Zero. Check temperature at
thermometer. For solid loads, please wait until temperature is lower than 80°C. For fluid loads, please
wait until temperature is lower than 70°C.
S FETY HINT: If loading contains glass bottles wait until chamber temperature is below 80°C, for
liquids wait until temperature has reached 70°C = approx. 40 min. Danger of boiling over of fluids.
Opening
Open the steam release cock (turn anticlockwise).
Push & turn red knob to open position. Steam release valve will be opened. Steam escapes.
Turn lid anticlockwise and remove.
To get better drying of the loading remove the basket from the chamber and let it cool down to
room temperature before taking goods out.
S FETY HINT: INCOMPLETE CYCLES
Should the cycle interrupted caused by switch off or electrical failure or other reason – the sterilization
is not completed correct and has to be repeated. For opening please follow the safety hint for cooling
down.