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9.12 Pressure Switch
The Pressure Switch is designed as a safety device, limiting over-
pressure in the steam generator.
It is set to a pressure of 38 psig which is about 2 psi above the working
pressure of the generator.
The pressure switch is factory set and it should not be adjusted in the
field. Doing so will void the warranty.
To replace the pressure switch perform the following steps:
Caution!
Before starting, disconnect the instrument from the power source
and ensure that there is no pressure in the chamber or jacket.
1. Remove the rear cover.
2. Disconnect the wires from the pressure switch.
3. Disconnect the pressure switch from the copper tube and replace it
with a new one.
4. Reconnect the wires and reassemble the rear cover.
5. To verify that the autoclave operates as required perform a 274°F
cycle.
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