Tuttnauer ELARA11-D, Technicial Manual

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Page 107
10.18
Replacing the Safety Valve
Caution!
Before starting, disconnect the instrument from the power source and
ensure that there is no pressure in the autoclave.
Allow the autoclave to cool before removing outer covers.
The safety valve is installed to protect the system from over pressurizing
should all the electrical controls fail.
1. Take off the autoclave cover (see 11.2).
2. Remove the water reservoir cover.
3. Unscrew the safety valve (2) and remove it from the safety valve base (1).
4. Replace the valve with a new safety valve (install only an original
equipment replacement!). Use liquid thread seal on the threads to seal it.
Tighten the safety valve to prevent leaking.
5. To check the new safety valve, perform the following:
5.1. Operate the sterilization cycle according to the manual but with no
instruments.
6. Allow a pressure of approximately 300 kPa (29-psig) to build up in the
generator and the chamber.
7. Remove water reservoir cover.
8. Pull the ring (4) of each safety valve in turn using a tool, i.e. screwdriver,
hook etc. (3). Pull the safety valve ring for 2 seconds. Be careful not to
burn your hands.
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