Battery Charger (Btyc); Generator (Gen); Preventive Maintenance And Operating Precautions - Carrier VECTOR 6500 Operation & Service Manual

8.9.8 Battery Charger (BTYC)

NOTE
A battery of known good condition must be con-
nected to the charger before doing the following
test.
a. Run the unit with the battery charger connected to the
battery as usual.
b. Using a clamp-on ammeter, take a reading of the am-
perage on both output wires of the battery charger. If
charging current is between 3 and 20 Amps, for 20
amp (single phase) chargers, or 3 and 40 amps, for
40 amp (three phase) chargers, the battery charger is
functioning correctly.
c. If charging Amps = 0 check the AC input voltage to the
charger. The AC input voltage range should be
between 350 and 600 VAC.
d. If there is no AC voltage, ensure the unit will not start
automatically by disabling any two way communica-
tion and placing the Main Power switch in the OFF po-
sition. Disconnect the high voltage source and lock-
out/tagout the receptacle.
e. Check battery charger fuses and inspect fuse holder
wire connections. Inspect plugs, pins and wires at
charger connections.
f. If input voltage, wiring connections and the fuses are
good, replace the battery charger.

8.9.9 Generator (GEN)

a. Preventive Maintenance and Operating Precau-
tions
WARNING
Be aware of HIGH VOLTAGE supplied at the
power plug or from the generator. When
performing service or maintenance proced-
ures: ensure any two way communication is
disabled in accordance with the manufac-
turer's instruction, ensure the Main Power
Switch is in the OFF position and, whenever
practical, disconnect the high voltage
source, lockout/tagout the receptacle and
disconnect the negative battery connec-
tion. NEVER dis-assemble the generator:
HIGH MAGNETIC FIELD INSIDE! This field
can interfere with cardiac implants such as
pacemakers and defibrillators.
Do not direct water or steam into the gener-
ator openings. Do not allow any soap and
water solutions to enter the generator.
Always test suspect generators with a
megohmmeter. (Refer to Section 8.9.1.)
Generators of this type should not be
"flashed." Operation with external voltage
source or momentary shorting of leads will
damage the generator and may cause in-
jury.
Costly repairs and down time can usually be prevented
by operating electrical equipment under conditions
which are compatible with those at which the equipment
was designed. Follow the instructions outlined below to
ensure maximum efficiency of the electrical equipment.
S Drying the Generator Windings
Generators that have been in transit, recently steam
cleaned, or in storage for long periods may be subjected
to extreme temperature and moisture changes. This
can cause excessive condensation, and the generator
windings should be thoroughly dried out before bringing
the generator up to full nameplate voltage. If this
precaution is not taken, serious damage to the
generator can result.
Always test suspect motors, or generators described
above, with a megohmmeter (Refer to Section 8.9.1).
Do not set voltage higher than rating on wiring insulation
in order not to prevent insulation breakdown during
testing. Test each winding to ground, looking for very
high megohmmeter readings. Also test each phase to
phase winding looking for a low ohm reading but with
equal reading across all phases.
8−37
WARNING
NOTE
WARNING
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