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Bryant ASPAS1BBA015 Manual de usuario Pagina 80

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Page 80
SECTION 4.2
OPERATIONAL ANALYSIS
PART 4
DC CONTROL
UTILITY VOLTAGE DROPOUT / ENGINE
CRANKING
• After fifteen (15) seconds and when the circuit
board's 15-second timer has timed out, if "Utility"
voltage is still below 60 percent of nominal, circuit
board action will energize the circuit board's crank
and run relays (K1 and K2) simultaneously.
• The crank relay (K1) will remain energized for about
15 seconds on the first crank cycle. The relay will
then de-energize for 7 seconds and will again
energize. This time it will remain energized for 7
seconds. Thus, the engine will crank cyclically for 7
second crank-rest cycles. This cyclic cranking will
continue until either the engine starts or until about
ninety (90) seconds of crank-rest cycles have
elapsed.
• When the crank relay (K1) is energized, circuit board
action delivers 12 volts DC to a starter contactor
relay (SCR), via Wire 56. When the SCR energizes,
its contacts close and battery power is delivered to a
starter contactor (SC). When the SC energizes, its
contacts close and battery power is delivered to the
starter motor (SM).The engine cranks.
C
HAR
G
E
R
BATTERY
0
1
62
22
V
O
LTA
GE
RE
GU
LAT
OR
ELE
C
TR
O
NI
C
6
4
0
11
(
STATOR
)
DPE WINDIN
G
C
2-
8
2
C
2-
7
C
2-1
1
C
2-1
0
C
B
2
4
0
22
6
BA
FIELD
0
1
3
11
0
77
C
2-
1
3
1
2
C
1-
3
14
11
1
6
17
12
1
3
1
5
14
C
2-
3
PRINTED
C
IR
CU
I
T
0
C
1-
6
C
2-
9
0
0
55
C
2-
4
4
0
WINDIN
G
EN
G
INE R
UN
(
STATOR
)
66
CO
NTR
OL
B
O
AR
D
3
2
1
J2
3
7
9
4
6
5
J1
5
4
1
2
66A
66A
85
351
HT
O
C
1-
4
C
2-
2
0
0
S
W
2
17
22
5
1
5
224
0
66A
14
1
94
2
3
1
94
56
1
5A
66A
2
39
1
8
86
2
3
224
4
86
0
L
OP
14
22
5
2
39
1
5A
2
3
1
94
1
3
22
5B
BATTERY
C
HAR
GE
WINDIN
G
1
3
1
2
77
224B
11
22
1
6
66
3
4
22
5A
224A
9
7
7
9
B
CR
0
14
1
3
1
3
1
3
0
0
224
22
5A
22
5
224A
22
11
0
0
1
5A
TX - TRANSFORMER, 16 Vac 56 VA & 16 Vac 1 VA
(
DUAL SEC.
)
DIA
G
RAM KE
Y
BA - BR
US
H A
SS
EMBL
Y
SC
R -
S
TARTER
CO
NTA
C
T
O
R RELA
Y
SC
-
S
TARTER
CO
NTA
C
T
OR
HT
O
- HI
G
H
O
IL TEMPERAT
U
RE
S
WIT
CH
F
S
- F
U
EL
SO
LEN
O
I
D
CB1 - CIRCUIT BREAKER
,
MAIN OUTPU
T
L
O
P - L
O
W
O
IL PRE
SSU
RE
S
WIT
CH
IM2 - IGNITION MODULE
,
CYLINDER #
2
IM1 - IGNITION MODULE
,
CYLINDER #
1
S
W1 - A
U
T
O
/
O
FF
/
MAN
U
AL
S
WIT
CH
S
M -
S
TARTER M
O
T
OR
S
W2 -
S
ET EXER
C
I
S
E
S
WIT
CH
SP1
,
SP2 - SPARK PLUG
S
CB2 - CIRCUIT BREAKER
,
ALT. EXCITATIO
N
B
C
R - BATTERY
C
HAR
G
E RELA
Y
F2 - F
US
E 7.
5
AM
P
D - DI
O
D
E
F1 - F
US
E 1
5
AM
P
CB3 - CIRCUIT BREAKER
,
EXTERNAL OUTLET
,
PUSH/PUL
L
= 12 VD
C
ALWAY
S
PRE
S
EN
T
= A
C
V
O
LTA
GE
=
G
R
OU
ND F
O
R
CO
NTR
O
L P
U
RP
OS
E
S
= 12 VD
C
D
U
RIN
G
C
RANKIN
G
O
NL
Y
= D
C
FIELD
CO
NTR
O
L V
O
LTA
GE
= 12 VD
C
D
U
RIN
G
EN
G
INE R
U
N
CO
NDITI
ON
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