Mount the pump
NOTE: DO NOT use plumber's pipe threading compound ("pipe dope") on plastic pipe; it can damage the plastic,
causing leaks and piping failure and void the warranty.
1. Place the sink in its final location.
2. Remove any existing drain fittings back to the tail piece. Make sure the existing tail piece does not leak.
NOTE: If the sink-drain tail piece is not 1-1/2 in. NPT, you will have to adapt it (bushings, reducers, etc.). In this
case, wrap all joints with PTFE pipe thread sealant tape before making connections.
3. Glue the 1-1/2 in. PVC pipe into the female adapter (purchase separately).
WARNING: Fire and explosion hazard. Be sure to follow the cement manufacturer's instructions when using PVC
cement. Do not use near fire or open flame.
4. Wrap the threads of the tail piece with 1 to 1-1/2 turns of PTFE pipe thread sealant tape. Thread the 1-1/2 in.
NPT female adapter onto the sink-drain tail piece. Thread it hand tight plus 1/2 turn with a pipe wrench or slip
joint pliers. DO NOT over tighten.
NOTE: The vertical height from the check valve to the pipe outlet should be at least 6.5ft to void check valve
leakage.
5. Wrap the threads of the 1-1/2 in. male adapter with 1 to 1-1/2 turns of PTFE pipe thread sealant tape and install
it in the pump inlet. Tighten it hand tight plus 1/2 turn with a pipe wrench or slip joint pliers. DO NOT over tighten!
6. Measure the 1-1/2 in. PVC pipe against the drain and the pump and trim the pipe to fit.
7. Do a trial assembly (dry - no glue) of the pump onto the drain pipe. Swing the pump until it accurately faces the
discharge piping, and then mark the pump and the inlet pipe/adapter assembly so that you can accurately install
the pump in Step 8. Arrange a temporary support under the pump to relieve the strain on the sink drain piping
while the glue is setting. Leave it in place while you measure and cut the discharge piping (Step 12).
* Required and included
** Purchase separately
† For easier removal for servicing or cleaning,
install a 1-1/2 in. solvent union in the drop
pipe.
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