TP-7070 7/1894 Section 3 Scheduled Maintenance
Battery short circuits. Explosion can cause severe injury
or death. Short circuits can cause bodily injury and/or
equipment damage. Disconnect the battery before generator
set installation or maintenance. Remove all jewelry before
servicing the equipment. Use tools with insulated handles.
Remove the negative (--) lead first when disconnecting the
battery. Reconnect the negative (--) lead last when
reconnecting the battery. Never connect the negative (--)
battery cable to the positive (+) connection terminal of the
starter solenoid. Do not test the battery condition by shorting
the terminals together.
3.9.2 Absorbed Glass Mat (AGM)
Battery
Absorbed Glass Mat (AGM) type batteries do not
require electrolyte level inspection or specific gravity
check.
AGM batteries use the same general maintenance
instructions for battery cleaning and charging as shown
in Sections 3.9.3 and 3.9.4. For specific maintenance
instructions, refer to the battery manufacturer’s
instructions.
Note: Ensure that the battery charger is compatible with
AGM type batteries before charging.
3.9.3 Clean Battery
Clean the battery and cables and tighten the battery
terminals according to the service schedule
recommendations. Clean the battery by wiping it with a
damp cloth. Keep the electrical connections dry and
tight.
If corrosion exists, disconnect the cables from the
battery and remove the corrosion with a wire brush.
Clean the battery and cables with a solution of baking
soda and water. Do not allow the cleaning solution to
enter battery cells. Flush the battery and cables with
clean water and wipe the battery with a dry cloth.
After reconnecting the battery cables, coat the terminals
with petroleum jelly, silicon grease, or other
nonconductive grease.
3.9.4 Charge Battery
Use a battery charger to maintain a fully charged battery
when the generator set is used in a standby application.
The engine battery-charging alternator charges the
battery while the generator set is running. Refer to the
battery charger operation manual for installation,
operation, and service procedures.
Note: If the battery is an AGM type, ensure that the
battery charger is compatible with AGM type
batteries before charging.
Note: If the generator set is in a temporary prime power
application in which the generator set has periods
of inactivity, the controller circuitry may drain the
battery. If there is no power source for a battery
charger, disconnect the battery from the
generator set.
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