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Bryant ASPAS1BBA015 Manual de usuario Pagina 84

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Page 84
SECTION 4.2
OPERATIONAL ANALYSIS
PART 4
DC CONTROL
INITIAL TRANSFER TO THE "STANDBY"
SOURCE
The generator is running, the circuit board's "engine
warm-up timer" is timing, and generator AC output is
available to transfer switch terminal lugs E1 and E2
and to the open contacts on the transfer relay. Initial
transfer to the "Standby" power supply may be briefly
described as follows:
• The circuit board delivers a 12 volts DC output to
the transfer relay (TR) actuating coil, via Wire 194,
and terminal A of the transfer relay (TR) in the
transfer switch. This 12 volts DC circuit is
completed back to the board, via transfer relay
terminal B, and Wire 23. However, circuit board
action holds the Wire 23 circuit open to ground and
the transfer relay (TR) is de-energized.
• When the circuit board's "engine warm-up timer"
times out, circuit board action completes the Wire
23 circuit to ground. The transfer relay then
energizes and its normally open contacts close.
• "Standby" power is now delivered to the standby
closing coil (C2), via Wires E1 /E2, the normally
open transfer relay contacts, Wire 205, limit switch
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
4
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
9
7
7
7
7
9
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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