Installation
INSTALLATION (Typical): Easy Install
Risk of electrical shock. Can shock, burn, or
kill. Unplug the primary sump pump before beginning this
procedure.
1. Find the high water level mark you made on the
discharge pipe in "Setup, Step 1". Cut the pipe at this
point and set the cut-off piece aside for use later. Clean
up and debur the cut ends.
2. Wrap the threads of the Battery Backup pump (BBU
pump) and the 1-1/4" x close nipple with 1-1/2 – 2
turns of PTFE pipe thread sealant tape (see Figure 3).
Leave the first thread free of tape and wrap
clockwise (
).
3. Thread the tee, the close nipple, the 1-1/4" x 1-1/4"
check valve, and the BBU pump together. To get them
tight, hold the pump and insert a large screwdriver
down through the tee and tighten the whole assembly
with the screwdriver. D
assembly is tight, the pump and tee should align verti-
cally (no twist – see Figure 3).
4. Glue the cut-off piece of pipe (which you set aside in
Step 2) into the top of the tee.
NOTICE If your discharge pipe is 1-1/4" inch, glue one
of the reducer bushings supplied with the system into
the tee, then glue the pipe into the bushing.
5. Look at your primary pump to determine if you have
a check valve in or near the pump discharge. If not,
install the auxiliary check valve in the bottom arm of
the tee and install the slip coupling on the check valve
(see Figure 3). For 1-1/4" discharge pipe, glue the
remaining reducer bushing into the slip coupling.
NOTICE If the primary pump assembly already includes
a functioning check valve, do not use the auxiliary check
valve included in the BBU system. You need one check
valve between the primary pump and the tee (to prevent
backflow from either pump into the sump pit), but two
check valves will restrict the pipe too much.
6. Trial Fit (
No glue yet
assembly back in the sump pit and add (dry) the tee/
check valve/BBU pump assembly to it. If necessary,
also include the 1-1/2 x 1-1/4 reducer bushing and the
slip coupling and auxiliary check valve (see NOTICE
above).
7. Measure the assembly against the hanging upper
discharge pipe (where you cut it in Step 1 under
"Setup"). Mark the discharge pipe coming up from the
tee 1/4" below the point of overlap (that is, you should
have an air gap of 1/4" after you cut the pipe). Don't
cut anything yet.
8. Study the assembly in the pit for a moment and then
adjust it so that nothing interferes with the primary
pump or its switch. Mark the joints with a permanent
marker so that you can realign everything after you pull
it out of the pit for gluing (see Figure 2).
! When the
o Not overtighteN
): Place the primary pump
NOTICE Take your time with this - it takes care but isn't
very difficult. Be sure you leave enough room for the BBU
pump's vertical switch. Mark everything that might move!
9. After you have marked everything, remove the
assembly from the pit.
10. Cut off the vertical discharge pipe at the cut point you
marked in Step 8. b
e sure you are cuttiNg oN the right
!
mark
11. Recheck the alignment and glue up all the joints on the
primary pump assembly.
NOTICE You may need to support the assembly, which
won't balance very well, in order to preserve the align-
ment while gluing it. Check this before you start gluing.
Another pair of hands may help here!
12. After the glue has set, slide the hose coupling and its
clamps down over the assembled discharge pipe. If the
pipe is 1-1/4", be sure to use the two reducing inserts
included with the coupling.
13. Hook the switch clamp over the switch bracket and slide
the assembly down over the hose coupling and discharge
pipe. Clamp the switch so that the water level when the
switch shuts off is above the BBU pump's intake.
14. Replace the assembly in the pit, slide the hose coupling
up over the air gap so that it joins the pipes, and tighten
the clamps enough to keep it there.
15. Check fit, alignment, etc. If everything looks good,
make sure that the BBU vertical switch is at the right
height and free of obstructions, then tighten the hose
clamps on the coupling.
16. Adjust the rod stop location on the BBU float rod to
give the desired switch travel. If necessary, nip off the
bottom of the float rod to provide clearance.
Figure 2: Mark joints for gluing
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