FDI P2131, Technical Manual, Page: 92 / 161

4.3.4 Replacing the SWS Cartridge
1. Remove inlet and outlet hoses from the blue housing.
2. For S/N’s AFS ‐ 0001 through AFS ‐ 0255, remove the bungee cords and slide the blue
housing out from the SWS frame. For S/N’s after AFS ‐ 0255, remove the bracket that
secures the blue housing by loosening the two panel fasteners and slide the blue
housing out from the SWS frame.
3. Use the supplied spanner wrench stored inside the SWS frame to remove the blue
housing from the black top.
4. Slide the old cartridge out and discard.
5. Slide the new cartridge in place, ensuring the gasketed side is up towards the opening of
the housing.
6. Verify large Blue Housing O ‐ ring is in place and is lubricated with silicone grease.
7. Follow steps 1 ‐ 3 in reverse order to return the SWS to operation.
4.3.5 Replacing the HEPA Filter
1. Turn OFF the SMU, disconnect power, and ensure pressure in the chamber and jacket is
at 0 psig.
2. Remove the left side panel of the SMU.
3. Using an 11/16” wrench to counter ‐ torque the fitting near solenoid valve, use an 11/16”
wrench to loosen the fitting nut at the filter.
4. Install the new HEPA filter by following steps 1 ‐ 3 in reverse order.
4.3.6 Replacing the Steam Trap
1. Turn off the SMU, disconnect power, and ensure pressure in the chamber and jacket is at
0 psig.
2. Disconnect all three hoses from the WRS.
Counter Torque fitting
Loosen Nut
Blue Housing
O ‐ ring
Gasket Side Up
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