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D-5
MAINTENANCE
D-5
CHARGING THE BATTERY
When you charge, jump, replace, or otherwise con-
nect battery cables to the battery, be sure the polarity
is correct. Improper polarity can damage the charging
circuit. The RANGER 300 positive (+) battery termi-
nal has a red terminal cover.
If you need to charge the battery with an external
charger, disconnect the negative cable first, then the
positive cable before you attach the charger leads.
after the battery is charged, reconnect the positive
battery cable first and the negative cable last. Failure
to do co can result in damage to the internal charger
components.
Follow the instructions of the battery charger manu-
facturer for proper charger settings and charging
time.
WELDER / GENERATOR
MAINTENANCE
STORAGE
Store the RANGER 300 in clean, dry protected areas.
CLEANING
Blow out the generator and controls periodically with
low pressure air. do this at least once a week in par-
ticularly dirty areas.
OUTPUT RANGE SELECTOR AND
POLARITY SWITCHES:
Switch contacts should not be greased. To keep con-
tacts clean, rotate the switch though its entire range
frequently. Good practice is to turn the handle from
maximum to minimum setting twice each morning
before starting to weld.
BRUSH REMOVAL AND REPLACEMENT
It is normal for the brushes and slip rings to wear and
darken slightly. Inspect the brushes when a generator
overhaul is necessary.
Do not attempt to polish slip rings while the engine is
running.
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RANGER 300 D AND 300 DLX
WARNING