Electrical Systems - Chassis --- Section 9
Cayman 2005
295
ALTERNATOR
The alternator is designed for
output through the engine operat-
ing range. When traveling, keep
an eye on the voltmeter in the
dash area. Normal readings
should be between 13 to 14.5
Volts DC. Higher or lower volt-
age indications indicate a poten-
tial problem with the charging
system. If the alternator output
drops below an acceptable level, a
charge indication warning lamp
will illuminate.
The alternator replaces amp
hours the chassis battery used to
start the engine. The amount of
charge the alternator sends to the
chassis battery is dependent on
the amount of time the engine is
operated. Repeatedly starting the
engine for short periods may not
be enough operating time to ade-
quately replace the amp hours the
chassis battery uses to start the engine.
The function of the alternator is an electrical system voltage maintainer, not a battery charger. When
the engine is operating, the alternator maintains electrical system voltage relative to a load, such as
headlights and windshield wipers. When a heavy load is placed on the alternator, such as trying to
charge dead house batteries, the operating temperature of the alternator will increase. Excess operating
temperature of the alternator for extended periods of operation can lead to premature failure of the alter-
nator. If the house batteries are in a low state of charge, it is recommended to charge the house batter-
ies with the inverter or an auxiliary battery charger before driving the motorhome.
CAUTION:
Long-term use of the inverter to operate the microwave while in transit will damage
the alternator. Use the generator to operate the microwave while in transit.
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