FDI P2131, Technical Manual, Page: 86 / 161

Retorque WRS Pump Head Screws
CHECK TASK
1. Ensure the WRS is disconnected from the SMU and is accessible
from all sides.
2. Remove the Front Panel (panel closest to bulkhead end) to expose
the motor.
3. Using a 10 mm socket and torque wrench set to 108 in ‐ lbs., torque
the 4 pump head bolts (See Section 4.5 Interior Components
Diagrams for location).
4. Replace the Front Panel, reconnect the WRS, and verify proper
operation of the WRS by pumping water into the SMU.
WRS Breather & PSV Inspection
CHECK TASK
1. Ensure the WRS is disconnected from the SMU and is accessible
from all sides.
2. Remove the Top Panel.
3. Remove the Bleach Fill Port and Breather Plug (See Section 4.5
Interior Components Diagrams for location) and inspect that air
can freely pass through the breather and that the breather is not
clogged with debris.
4. If necessary, clean the breather plug by using compressed air.
5. Reinstall the breather plug.
6. Pull the Tank Pressure Relief Valve ring (See Section 4.5 Interior
Components Diagrams for location) and verify that the poppet
moves freely and re ‐ seats.
7. Replace the Top Panel.
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