Model 3215—Utilizes a Manual Switch. Put it in “BATT” position to bring RV battery into the
circuit.
When 120 VAC is again available, connect it to Converter. The Converter—through its Automatic Relay—
will be brought back into circuit. For Converters with Manual Switch, put switch back in “CONV”
position.
When operating RV 12-volt equipment from RV battery, reduce the amount of equipment in use—to
conserve battery. Gradual dimming of lights and slowing of motors indicates low battery voltage. If 12 volt
Equipment will not operate from RV battery, check wiring between Converter and battery. If this line is
fused and “blown”, inspect for overload or “short”. DO NOT install oversize fuse. Make certain battery is
fully charged—see No. 3 below.
Battery Charging Section—Option C
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Units with OPTION C contain an automatic, solid-state Battery Charger Section. When 120 VAC power is
connected to Converter, the Charger Section will automatically “sense” the condition of RV battery. If it is
below “full charge,” Charger Section will start charging the battery.
If RV battery has been drawn down quite low, it will be charged at a relatively high amperage rate. If
battery has not been severely drained, it will be charged at lower amperage rate. The rate of charge will
decline as the battery reaches “full charge.” After battery reached “full charge,” the Charger will drop back
to “maintenance” level. If will not resume active charging until battery again falls below “full charge.” If
your storage battery cannot be charged as described above it is possible the battery is defective—see
“Battery Maintenance” below.
STORAGE BATTERY MAINTENANCE
Warning—before inspecting or servicing storage battery, read and follow battery manufacturer’s
cautions and directions.
Your RV storage battery must be properly maintained so it can perform its functions as described in No. 2
& 3 above. The following suggestions—plus those of battery manufacturer—will help you maintain your
storage battery:
The battery must be in good condition with water at proper level when first installed in RV.
When 120 VAC is connected to Converter, check battery once a week. As battery ages, it will usually need
water added more often.
If 120 VAC is not connected to Converter, it should be reconnected to Converter once a month for 8-12
hours to “recharge” battery.
If you store battery outside of RV, a battery charged should be connected to it at least once a month to
recharge battery.
Do not allow battery to remain in discharged condition—it will become sulfated and not accept a proper
“charge.”
Some situations, which may indicate, need for battery replacement are:
The loss of more water in one cell than others.
Continuous loss of water in all cells—perhaps accompanied by overheating of battery, gassing and extreme
bubbling.
A marked difference in the specific gravity reading between one cell and others.
