Introduction
The Basement Watchdog Big Dog backup sump
pump is designed as an emergency backup
system to support your main AC sump pump, and
it will automatically begin pumping any time the
float switch is activated by rising water.
If your main AC pump breaks or is unable to keep
up with all the incoming water, the Basement
Watchdog pump is capable of running without
discharging the battery as long as the AC power
is on. As soon as the AC power is interrupted,
the battery takes over. Should any malfunction
or emergency occur that involves the sump
pump, the battery, or the AC power, the
Basement Watchdog system will sound an alarm.
A light on the display panel of the control unit
will indicate the cause of the alarm and the
corrective action.
For added reliability, the float switch has, not one,
but two floats. Should one float fail to operate, the
second float automatically activates the pump.
To extend the battery run time, two batteries
may be connected to the Basement Watchdog
Big Dog system by purchasing a second battery
and acid pack, as well as a set of battery jumper
cables. Jumper cables specifically designed for
this use are available from the manufacturer,
Glentronics, Inc.
The Basement Watchdog Sump Pump
System includes:
• A control unit with a dual float switch, a
battery fluid level sensor, battery cables, a
5 amp AC fuse, and a 25 amp DC fuse
• A plastic wire tie for mounting the float
switch
• A pump with a 1½” pipe adapter
• A battery box
• A battery cap with a hole to accommodate
the fluid sensor
You will also need to supply:
• A Basement Watchdog Big Standby Battery
(30HDC140S or BW-30F) or Basement
Watchdog Maintenance Free (AGM) Standby
Battery (BW-27AGM).
DO NOT
use an automotive battery with this
system.
DO NOT
use a Basement Watchdog Emergency
Standby Battery (24EP6 of BW-24F) with this
system. It will not run the pump as long as
the Big Standby Battery.
The internal construction of some wet cell
batteries may not be compatible with this
system. Glentronics can not guarantee the
compatibility of other brands of batteries.
The use of a Basement Watchdog battery is
HIGHLY recommended.
• 1½” rigid PVC pipe and fittings
• PVC primer and cement
• A union with hose clamps or a “Y” connector
and two (2) check valves, depending on the
installation method you use
• A surge protector (recommended)
• Six (6) quarts of 1.265 specific gravity
battery acid (only if using a 30HDC140S or
BW-30F battery)
For narrow sump pits you will need
some additional parts:
• An “L” bracket at least six (6) inches long
(preferably one that will not rust)
• Two (2) stainless steel hose clamps
• One (1) stainless steel screw (#8-32 x
3/4”), a matching washer & nut
To connect two batteries you will need:
• Two (2) batteries of the same age, type and
capacity (so they will have equal power)
• Another battery box
• Two (2) acid packs to fill the dry batteries
• A set of battery cables with rings on both
ends to connect the two batteries together
(available from Glentronics, Inc.)
Use of a Basement
Watchdog Klunkless
Check Valve™ will
provide quieter
operation.
(See back cover for
more information.)
Replacement Part Numbers
Pump . . . . . . . . . . . . . . . . . . . . . . .1011003
Float switch assembly . . . . . . . . . . .1020009
Fluid sensor assembly . . . . . . . . . . . .1014001
Pipe adapter . . . . . . . . . . . . . . . . . .1120002
Battery box . . . . . . . . . . . . . . . . . . .1113003
Battery cap with hole . . . . . . . . . . . .1125000
Battery jumper cable for 2 batteries . . . . . .PJC
Call 800-991-0466, option #3 to order parts.
System Specifications
Power supply requirements . . . . . .115 volts AC
Pumping capacity . . . . . . . . . .3500 GPH @ 0’
Pumping capacity . . . . . . . . .2200 GPH @ 10’
Pump dimensions w/elbow . . . . . .7
5
⁄
8
” H x 9”W
Pump housing & strainer . . . . . .non-corrosive,
will not rust
Pump . . . .can run dry for short periods of time
Float switch . . . . . . . . . .independent, can be
set at any level
Page 2
Control Unit
Battery Box
Cap
Wire Tie
Float Switch
Pipe
Adapter
Pump
Battery
Wires
Fluid Sensor
