Tuttnauer 1730 M, Technician Manual

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18
6.10 Replacing Multi-Purpose Valve
Caution:
Before starting, make sure that the electric cord is disconnected from
the power source and there is no pressure in the autoclave chamber.
1. Dismantle the autoclave cover (see para. 6.2 “ Dismantling the
Outer Covers of the Autoclave ” ).
2. Drain the water from the water reservoir.
3. Pull the valve knob out.
4. Unscrew the 3 nuts that tighten the copper tubes to the multi-
purpose valve.
5. Unscrew the nut holding the valve to its base.
6. Pull out the valve.
7. Replace it with a new one. Make sure that the valve is tightened to
the valve base.
8. Reconnect the three tube nuts.
9. Return the valve knob to its place.
10. Turn the valve knob to FILL position.
11. Pour water into the reservoir.
12. Check the copper tube connections for leakage.
13. Replace the cover and tighten it to the base.
Occasionally, it is necessary to take off the screws that are on the shaft
of the valve in order to take the valve out of its base.
For Position of Micro-Switches see next page
After installing the new valve, the screws should be replaced according
to drawing "Multi-Purpose Valve Assembly ".