Bryant ASPAS1BBA015 Manual de usuario Pagina 81

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Page 81
SECTION 4.2
OPERATIONAL ANALYSIS
DC CONTROL
PART 4
When the circuit board's run relay (K2) energizes,
12 volts DC is delivered to a fuel solenoid (FS), via
Wire 14. The fuel solenoid (FS) energizes open and
fuel is available to the engine. Wire 14 energizes
the battery charge relay (BCR), which will allow the
BCR to power the battery charger.
As the engine cranks, magnets on the engine
flywheel induce a high voltage into the engine
ignition modules (IM1/IM2). A spark is produced
that jumps the spark plug (SP1/SP2) gap.
During cranking, Wire 4 supplies 2-3 VDC (8-9 VDC
isolated) to the rotor for field flash.
With ignition and fuel flow available the engine can
start.
F1
SM
C
1-
1
1
5
0
0
1
8
C
1-
5
56
1
8
17
1
5
17
1
5A
SCR
0
0
0
1
5
1
6
2
39
1
5
14
0
1
94
2
3
1
3
1
8
D
IM2
IM1
S
P
2
S
P
1
2
3
1
6
0
1
3
SC
0
S
W
1
1
5
1
5A
2
39
1
94
F
S
0
14
C
2-
1
WINDIN
G
(
STATOR
)
P
O
WE
R
22
44
11
CB1
33
56
V
A
1VA
1
3
22
5
22
5A
224A
224
TX
17
N1
N2
11
22
C
2-
5
N2
N1
C
2-
6
11
1
94
2
3
1
94
2
3
N1
N2
CUS
T
O
ME
R
SU
PPLIE
D
BATTERY
12
V
BLA
CK
RED
SC
24
0V
12
0V
12
0V
CUS
T
O
ME
R
CO
NNE
C
TI
O
N
S
CO
I
L
12V
dc
U
TILITY
INP
UT
24
0
VA
C
RELAY
T
RAN
S
FE
R
TR
12VD
C
A
CC
E
SSO
RY
SOC
KE
T
+
-
14
0
0
1
5
17
22
N
11
2
3
1
94
22
D
G
F
CI
OU
TLE
T
EXTERNAL
G
G
G
L
N
L
11
G
G
N
N
C
B
3
N
0
0
1
5
1
5
1
5
1
3
1
5
1
5B
1
5B
F2
0
0
2
39
Figure 3. Circuit Condition - Engine Cranking
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