Page 41 of 63 Pages
11.11 Unclogging the multi-Purpose Valve or Chamber
VERY IMPORTANT!
When sterilizing cotton wool or pads, it is essential to wrap them in
paper or cotton bags in order to prevent the multi-purpose valve and
the autoclave openings from becoming clogged with remnants of the
material.
1. Pour distilled water into the chamber, according to quantities mentioned
in para. 4 (Installation, Placing and Leveling Instructions).
2. Close the door.
3. Turn the multi-purpose valve to STE. position.
4. Turn the timer knob to 20 min.
5. Turn the pressure switch (B10) knob to either 250 or 274ºF (121 to
134ºC).
6. Turn the main switch to START position.
7. After the timer has reached “0” turn the multi-purpose valve (clockwise)
to the FILL position.
In most cases, the pressure pushes the obstructing substance out, and the
steam exhausts into the water reservoir.
8. When the pressure gauge reaches 0, turn the multi-purpose valve to the
OFF position, and the main switch to STOP.
9. Open the door.
10. Replace the water in the water reservoir.
The autoclave is ready for the next cycle.
11. If this procedure does not clear up the clogging, replace the multi-
purpose valve.
11.12 Pressure Door Lock System
This safety device prevents the door from opening when the chamber is
pressurized.
The system is based on the built up pressure in the chamber that pushes the
Silicon-rubber bellows and the pin into the grove of the tightening bolt. This
prevents the operator from opening the door. When the steam is released,
this bellow returns to its original position, drawing the pin with it thus
releasing the tightening bolt.
Should there be no pressure in the chamber, and the door cannot be opened,
the following procedure should be observed.
1. Turn the handle of the multi-purpose valve to EXH. & DRY.
2. The steam exhaust valve pipe is open and air inserts the chamber. In this
stage the door can be opened.
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