FDI P2131, Technical Manual, Page: 81 / 161

4.1.2 2 ‐ Month Preventive Maintenance
Pressure Safety Valve Test
(NOTE: this procedure also conducted on 1
st
startup after storage)
CHECK TASK
WARNING : Do not pull the pin on the PSV while the unit is under
pressure. Hot Steam will exit the valve and can cause injury.
1. Pull the pressure safety valve (PSV) pin on the rear of the SMU to ensure
it is not stuck. This should only be done when the jacket pressure is at
atmospheric pressure (e.g., 0 psig).
2. Then turn sterilizer on and allow to fully heat up. Inspect the PSV for no
leaks.
Jacket Blowdown Procedure
CHECK TASK
1. With the sterilizer completely setup and the jacket at normal operating
pressure, connect the high ‐ temperature drain hose to the jacket drain
valve.
CAUTION : The jacket drain valve is hot. To avoid a potential burn hazard,
use heat resistant gloves to operate the valve and attach/remove the
drain hose.
CAUTION : To avoid a potential burn hazard, ensure the high ‐ temperature
drain hose is used to perform the jacket blowdown.
2. Relocate the shims to the front of the sterilizer to tilt the unit towards
the jacket drain valve.
3. Ensure the outlet of the drain hose is positioned at a safe location.
Securely anchor the drain hose outlet to prevent any hose whip that
might occur from the hot water / steam flowing from the drain hose.
CAUTION : Hot water and steam will flow from the outlet of the drain
hose during blowdown. Do not attempt to hold the hose outlet by hand.
4. Turn OFF the SMU and disconnect Class L plug. Using heat resistant
gloves, slowly open the jacket drain valve completely to perform a
pressured blowdown of the jacket. This will remove any contaminants
that have built up in the jacket.
5. Once the jacket pressure has reached 0 psig, the jacket blowdown is
complete.
6. Return the sterilizer to the original tilt by returning the shims from the
front to the back of the sterilizer.
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