Bell & Gossett IM193 R03 Rev 2 Battery Backup Sump Pump - Manual (Page 7)

7
TROUBLESHOOTING
Pump won’t run:
1. Check all connections.
2. Check for low or defective battery.
3. Check that automatic switch is operating properly.
4. Blown fuse in switch circuit. Unplug pump and re
move the strainer. Check to see if impeller is free
to turn. If impeller is locked remove the obstruction.
Replace strainer and fuse.
Motor hums but pump won’t run:
1. Check for low or defective battery.
Pump runs but pumps very little or no water:
1. Make sure a check valve is installed and
functioning between primary pump discharge and
backup sump pump tee.
2. Check for obstruction in discharge pipe.
3. Discharge pipe length and/or height exceeds capacity
of pump. See Table 1 for pump capacity.
4. Check for low or defective battery.
5. Drill a
1 ⁄
16
to 1 ⁄
8
inch diameter vent hole between
pump discharge and check valve.
Pump cycles too frequently:
1. Main check valve located between discharge of
primary pump and the backup sump pump tee or
check valve not installed or working properly. Install
or repair as required.
NOTE:
“Deep Cycle Marine” batteries are different
than marine and automotive batteries!