Chamberlain GH Owner's Manual page 12

(BK)
L2
1 PHASE
(BK)
L1
POWER IN
(BK)
(SEE NOTE #1)
3 STOP
(YEL)
OPEN
SAFETY EDGE
R1
(OR)
(OR)
OPEN & CLOSE
RADIO TO
OPEN & CLOSE
(OR)
R1 R2
CLOSE
(PUR)
TIMER TO CLOSE
(OPTIONAL)
(RED)
NOTE:
1. Voltage same as line voltage.
SINGLE PHASE SCHEMATIC DIAGRAM
PUR BL/BK
1 3
BL
8
YEL
5
4
2 BL/BK
GY
115 VOLT - 1 PHASE
MOTOR CONNECTION
OVERLOAD
(BK)
IR
230V MODELS
115V MODELS
(BR)
EXTERNAL
INTERLOCK
4 5
1
(OR)
AUX. CLOSE
LIMIT SWITCH
10
(GY)
(GY)
NC
C
(OR)
NC
7
AUX. OPEN
(YEL)
LIMIT SWITCH
C
NO
(YEL)
(PUR)
2
(P)
(PUR)
CLOSE CONTROL WIRING OPTIONS
*
C2 WIRING - Constant Presssure to Close
RED WIRE ON TERMINAL #2 (Shipped from Factory)
B2 WIRING - Momentary Contact to Close
MOVE RED WIRE FROM TERMINAL #2 TO TERMINAL #3
PUR
1
BL
8
5 2
YEL
4
GY
230 VOLT - 1 PHASE
MOTOR CONNECTION
CL
4 3
OP
4 3
OP
2 1
CL
6 5
HAND CHAIN
INTL'K SWITCH
(WHEN PRESENT)
(BRN)
NC C
(BRN)
(YEL)
14
OP
13
IR
(OR)
(Y)
OP
NO
C A1
(RED)
R1
R1
IR
(R)
(PUR) (PUR)
CL
C NO
A2
14
CL
13
- Shipped from Factory
*
12
1742-1
BL/BK
3
BL/BK
(YE)
OP
5 6
CL
(GY)
1
2
(PUR)
(BL)
PRI.
T1 (SEE NOTE #1)
24VAC
SEC.
(YEL)
OPEN
LIMIT SWITCH
WIRE
(OR) (OR)
NUT
NC C
A2
R3
(RED) (RED)
CLOSE
LIMIT SWITCH
(PUR) (PUR)
A1 NC C
TO MOTOR