Basement Watchdog Big Dog - Manual (Page 8)

Page 7
Pump & Pipe
Installation Instructions
INSTALLATION D:
CONNECTION TO EXISTING DISCHARGE PIPE
FOR NARROW SUMP PITS (Diagram D)
Depending on your installation requirements, PVC
pipe lengths will vary. Cut the pipes and assemble
them as shown in photo #8. Do not cement them
together until you are sure they are cut to the
correct lengths.
It is important to keep the
discharge pipes on both pumps parallel to each
other, so that the pumps remain flat on the floor
of the sump. More detailed instructions follow.
Unplug the main AC pump when installing the
backup pump to avoid electric shock. Failure
to do so could cause serious injury or death.
1. Attach an “L” bracket to the discharge pipe of
the main AC pump with two (2) stainless steel
hose clamps. Position the bracket so the
bottom of the “L” is just above the top of the
main pump, and out of the way of any float
switch on the main pump.
2. (a) Remove the black bottom strainer of the
pump by pressing in the two tabs on the
strainer and pushing down. There are holes
suitable for mounting on the bottom of the
strainer. (b) Using the #8-32 x ¾” stainless
screw, washer and nut, attach the strainer to
the “L” bracket. (c) Once the strainer is
attached, simply press the rest of the pump
onto the mounted strainer.
3. Secure the pump wire so that the plug on the
end will not fall into the sump. Attach the
wire to the pipe with a piece of tape.
4. Cut a piece of 1½” rigid PVC pipe long enough
to reach from the elbow of the backup pump
to one (1) foot above the floor. Prime and
cement it to the 1½” pipe adapter, then screw
the adapter into the pump.
5. Install a check valve on the top of the PVC
pipe attached to the Basement Watchdog
pump. Make sure it is installed with the arrow
pointing up or it will not prevent the backflow
of water.
6. When a check valve is used, a 1/8” hole
must be drilled in the PVC pipe above the
Basement Watchdog pump. Make sure it is
above the water line and below the check
valve. Drill the hole at a 45º angle toward
the bottom of the sump to avoid splashing
water outside the sump pit. If a 1/8” hole
is not drilled above the pump, an air lock
may prevent the pump from operating.
7. If there is no check valve on the main AC
pump discharge pipe, one must be installed at
this time. Cut the discharge pipe
approximately one (1) foot above the floor.
Install a check valve on the top of the pipe
and tighten the bottom hose clamp. Now
prime and cement a small piece of 1½” PVC
pipe to the bottom of a “Y” connector. Prime
and cement the top of the “Y” assembly to the
discharge pipe with the “Y” extension facing
down toward the backup pump. Now connect
the bottom of the assembly to the check valve
and tighten the hose clamp.
8. Connect a piece of 1½” PVC pipe above the
check valve of the Basement Watchdog pump,
and attach a 45° elbow to that pipe. Extend
another piece of pipe to reach from the 45°
elbow to the “Y” connector on the other pipe.
9. Prime and cement all pipe connections
securely to prevent leaking, and tighten all
the hose clamps.
PUMP WIRE
HOSE CLAMPS
PIPE ADAPTER
BASEMENT
WATCHDOG
PUMP
"L" BRACKET
FLOOR
JOIST
MAIN
AC PUMP
RIGID
1-1/2"
PVC PIPE
CHECK
VALVE
RIGID
1-1/2"
PVC PIPE
45º ELBOW
"Y"
CONNECTOR
CHECK
VALVE
1/8" HOLE
DRAIN TILE
4 7 5 6
Diagram D
CAUTION
! DANGER
8
1 3 2a 2b 2c
“L”
BRACKET