Installation
7
2. Wrap the threads of the close nipple (Key No. 4 on
Page 12) counterclockwise with 2 turns of Teflon
TM
tape and set aside.
NOTICE:
There must be a check valve installed in
the Primary Sump Pump discharge pipe between the
tee and the Primary Sump Pump. This will prevent
recirculation into the Primary Pump when the
Backup Sump Pump comes on.
3. The backup pump (Key No. 6) and check valve
assembly (Key Nos. 5A and 5B) come preassembled.
Thread the close pipe nipple into the check valve.
4. To thread the tee (Key No. 2) into the close nipple:
Hold the check valve with the channel locks, insert
the screwdriver into the tee for leverage, and tighten
the tee with the screwdriver. Finish with the tee in a
straight up and down (vertical) position.
5. Clean the pipe ends with the cloth towel.
6. Glue the cut-off piece of discharge pipe into the top
of the tee.
NOTICE:
If your pipe is 1-1/4”, you will need to glue
the reducer bushings into the tee and glue the pipe
into the bushing. Place the assembly onto the prima-
ry discharge pipe. Do not glue the tee onto the pri-
mary pump discharge pipe.
7. Mount the back-up pump float switch assembly (Key
No. 8) loosely to the discharge pipe with the cable ties
(Key Nos. 8A & 8B). See Figure 6, on Page 6.
Approximately 2.5” (63.5 mm) of cord length should
be left between the float and the clamp. Do not tight-
en the cable ties. Adjustments may be needed later.
Cut the Discharge Pipe:
1. Put the double pump assembly into the sump pit.
NOTICE:
The discharge pipe now overlaps the dis-
charge pipe that leads outside.
2. Mark the discharge pipe where it should be cut. Be
sure to leave a 1/4” air gap between the ends of the
pipes. This gap will absorb the noise from vibration
and allow for flexibility.
3. Make the third cut. See Figure 8.
TRIAL ASSEMBLY OF DOUBLE PUMP
ASSEMBLY IN THE SUMP PIT:
1. Connect the discharge pipe to the exterior discharge
pipe with the rubber coupling and clamp kit (Key
No. 1). Do not tighten the clamps until all the final
adjustments are complete.
2. Make the final adjustments. Make sure the pumps
and the switches do not interfere with each other.
Make sure there is plenty of room for the float
switches to either swing or to move up and down
from their “off” to their “on” positions.
Mark and Glue Assembly:
1. Mark the pipe and the fittings at all the connections
with a pencil. These marks will be used as a reassem-
bly guide while gluing to be sure everything is still in
the right place and nothing has moved.
2. Loosen the rubber coupling and clamp connection.
3. Carefully pull the double pump assembly back out of
the pit.
4. Take the tee assembly off of the primary discharge
pipe.
Do Not
unscrew any of the Teflon
TM
taped pipe
nipple connections.
5. Clean all the PVC pipe ends with the PVC cleaner.
Hazardous fumes.
Follow the cement
and cleaner manufacturers instructions. Use the PVC
cement in a well ventilated area away from fire or
flames.
6. Glue the PVC fittings where indicated by the pencil
marks. Wait 10 minutes for the glue to cure.
Final Assembly:
1. Put the double pump assembly back into the pit.
2. Install and tighten the rubber coupling and clamp kit.
3. Make the final float switch adjustments and tighten
the cable ties.
1/4" air gap
Make the Third Cut
(the overlap plus
the 1/4" air gap).
Exterior
discharge
pipe
Exterior
discharge
pipe
Method A
Method B
overlap
overlap
Sump basin
inlet pipe (from
drain tiles to
sump basin).
Note: Always install the back-up sump pump as close
to the bottom of the sump pit as possible.
2"
2"
Previously marked
"on" water level
of Primary Sump Pump.
(See Figure 1, Page 4)
Recommended Minimum
Figure 8 – Make the third cut to remove the excess dis-
charge pipe
