Carrier VECTOR 1800 MT - Page 298

9-5
62-11039
INDICATION/
TROUBLE
POSSIBLE CAUSES
REFERENCE
SECTION
9.3 ALTERNATING CURRENT GENERATOR
Loss of residual magnetism in exciter field 8.9
N
o
v
o
l
t
a
g
e
Circuit breaker tripped Check
N
ovo
l
tage
Open or short in stator windings Check
Short circuited Repair
Low engine speed Correct
L
o
w
v
o
l
t
a
g
e
Excessive load Check
L
o
wv
o
l
t
a
g
e
High resistance connections -- connections
warm or hot
Clean and
Tighten
Fluctuating speed Correct
Fluctuating voltage
Irregular speed of engine Engine Manual
F
l
u
c
t
u
a
t
i
n
g
v
o
l
t
a
g
e
Loose terminal or load connections Tighten
High voltage Excessive engine speed Correct
Generator overloaded Check
O
v
e
r
h
e
a
t
i
n
g
Clogged ventilation openings Clean
O
ver
h
eat
i
ng
Insufficient circulation Check Fan
Unbalanced load Balance
Mechanical Noise Loose laminations 8.9.2
Generator frame produces shock
when touched
Static charge
Check ground
to frame