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Installation Instructions
Step 1. Carefully inspect the pump for damage that could cause it to fail. Your pump has
been carefully packaged to prevent damage during shipping; however,
occasional damage does occur due to rough handling.
Step 2. Attach the desired length of PVC or ABS discharge pipe to the pump outlet, using
PVC adapter (1-1/4" pipe and adapter for WSP33K1AA, 1-1/2" for WSP53AA
and WSP73AA). Make sure the open end of pipe will be above the top of the
basin.
Step 3. Clear the sump basin of any water, debris, or sediment.
Step 4. Lower the pump into the basin.
Step 5. Attach the in-line check valve to the discharge pipe 12" to 18" above the pump
discharge. Make sure the arrow is pointing away from the pump (with the flow).
Connect the other end of the check valve securely to the drain pipe and tighten
the clamps.
Note: Do not put the check valve directly into the pump discharge opening.
Step 6. Drill a 1/8" relief hole in the discharge pipe 5" above the pipe connection to the
pump.
Step 7. Plug in the pump and fill the sump basin with water to test the unit. The pump
should turn on when the water level is 13" to 14". Allow the pump to go through
several ON-OFF cycles to assure satisfactory operation.
Note: If the pump does not operate properly, see "Troubleshooting Checklist" on
page
16.
Septic Tank Installation
The WSP pumps can be used to pump septic tank effluent (not containing greater than
3/8'' solids), but must be installed as follows:
• Install the pump in a separate compartment at the discharge side of the septic tank.
Never install the pump in the main tank where sludge collects.
• Use with a junction box.
WARNING: The sump basin must be vented in accordance with local plumbing codes.
These pumps are not designed for and CANNOT be installed in locations classified as
hazardous in accordance with the National Electric Code, ANSI/NEPA 70-1984.
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