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Operation / Troubleshooting
5. Recycle charge stage:
The charger automatically initiates a charge cycle that
begins with the prequalification test stage. This occurs
once the battery has been in the float charge stage for
84 days.
Special Features:
• The chargers are equipped with reverse battery, short
circuit, and "run-away charge" protection.
• A built-in safety timer starts when the charger enters
the Constant Current/Constant Voltage Charge stage
(Yellow LED is continuously on). The DB10018T-01
system has a 90 hour safety timer and the DB20018T
system has a 20.5 hour safety timer.
NOTICE: To reset the charger unplug it from the 120V
outlet for 10 seconds and then plug it back in.
BATTERY REQUIREMENTS
Hazardous electrical current. Can cause
severe burns and start a fire if battery terminals are short cir-
cuited. Install the battery in a battery box (See Key No. 8,
Page 15). To prevent accidental shorting across battery ter-
minals, strap cover securely (See Figure 13) on the battery
box. Do not leave battery uncovered. Do not allow children
to play around the battery backup system installation.
Figure 13 – Battery Hold-down Strap Threading
Your backup sump pump depends on the battery used
with it for power. The better the battery, the better the
performance of the pump. We recommend the use of a
size 27M or a size 24M Marine Deep Cycle Battery.
They will perform as indicated in Table IX, on Page 13,
and they stand up well to long periods of little or no use.
NOTICE: A 24M battery will provide the same perfor-
mance as a 27M battery, but for a shorter length of time.
Use of a standard automobile battery, GEL type, or a
Maintenance Free (sealed) battery with this charger is not
recommended. An automobile battery may require
charging after only 1-2 hours of continuous use, and the
repeated charging cycles may cause early plate failure in
the battery. GEL-type batteries require a lower voltage
than the charger is designed for; they may overcharge.
Maintenance-free (sealed) batteries require a higher volt-
age; they may never reach full charge.
3340 1198
Use only the recommended battery or one of the same
type and size so it will fit in the battery box (maximum
size 12-5/8" long, 7" wide and 9-3/8" high [320.7mm x
177.8mm x 238mm] including terminals) and supply
enough voltage for full performance.
BATTERY MAINTENANCE
Severe burn hazard. A filled battery contains
sulfuric acid. Avoid contact with skin, eyes or clothing.
NOTICE: To protect battery case from chipping and
gouging, do not let battery sit on concrete floor. Install
battery on a shelf or protective pad (plywood, 2x4s, etc.).
Always install battery in a dry location that is protected
from flooding.
Follow the battery manufacturer's recommendations for
maintenance and safe use of battery.
TROUBLESHOOTING
Pump won't run.
1. Check all wiring connections.
2. Check for low or defective battery.
3. Check that automatic switch is free to swing up and
down.
4. Check for a blown fuse in the junction box of the
DB10018T-01 system or in the charger of the
DB20018T system.
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 IX, Page 13, for pump capacity.
4. Check for low or defective battery.
5. Positive (+) and negative (–) wires are reversed.
Pump cycles too frequently:
1. Tether length too short on automatic float switch.
Make sure that tether is at least 2.5" (63.5mm); see
Figure 6, Page 6.
2. Main check valve located between discharge of pri-
mary pump and the Backup Sump Pump tee is not
installed or is not working properly. Install or repair
as required.
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