For parts or assistance, call Master Plumber Customer Service at 1-800-628-9439
Installation
3
1A. Minimum sump size: 10" (254mm) diameter by
10" (254mm) depth.
1B. Construct the sump pit of tile, concrete, steel, or
plastic; it must meet code requirements.
1C. No clay, earth, sand, or gravel in the sump (they
will clog the pump). Keep the pump inlet screen
clear.
2A. Install the discharge plumbing and check valve,
using teflon tape - NOT pipe joint compound.
2B. Tighten the pipe into the pump (hand tight +
1-1/2 turns).
2C. Install a check valve in the vertical pipe to
prevent flow backwards through the pump when
it shuts off.
To prevent airlocking the pump,
drill a
1/8" (3.2 mm) hole in the discharge pipe just
above where it screws into the pump discharge.
Install the check valve above this hole, but keep it
as close to the pump as possible. Be sure the
hole is below the waterline and below the check
valve.
2D.To reduce noise and vibration, cut the discharge
pipe near the pump and fasten a short length of
rubber hose (1-7/8" (48 mm) I.D., e.g. radiator
hose) into it with hose clamps.
3. Place the pump in the sump; make sure that
nothing interferes with switch operation.
4. Finish installing the necessary plumbing. Follow
the glue manufacturer’s instructions for safety
precautions and curing time.
Risk of flooding. Make sure the pump
cannot move in the sump. If the pump moves when
it runs, the piping or sump wall may interfere with
the switch and prevent the pump from starting or
stopping.
Hard Surface –
No Sand, Clay,
Gravel
Sump Pit
10" Minimum
with Vertical Switch
10" Min. with
Vertical Switch
Figure 1
Figure 2
Figure 4
Figure 3
