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2–Pump 12-Station Controllers Chapter 3: Installation 16
Figure 1: Typical 24-Volt Junction Box Wiring Diagram
A0544675
(115VAC)/(0VDC)
TO CONTROLLER INPUT FOR
PUMP HIGH-VACUUM
64
3
T
2
T
1
T
2
RESET
TRIPPED
TEST
98
97
96
95
A2
14
6
T3
4
T2
A2
A09
A1
13
L3
5
L2
3
L1
1
T1
2
L1
L2 L3
M
OL
T1 T2 T3
VS
(NEUTRAL)/(+24VDC)
(115V AC)
TO CONTROLLER INPUT FOR
PUMP HIGH VACUUM
J1
9596 A2 A1
FROM CONTROLLER OUTPUT
FOR MOTOR STARTER
FOR VACUUM PUMP SOLENOID
FROM CONTROLLER OUTPUT
FOR PUMP BLOWBACK SOLENOID
FROM CONTROLLER OUTPUT
(NEUTRAL)
VACUUM PUMP
MOTOR STARTER
VACUUM
SOLENOID ON PUMP
BLOWBACK SOLENOID
ON PUMP
CONTROL WIRING
J1
COMMON
JUNCTION
BOX
TO
BLOWBACK
VACUUM
LOCATED ON
KAY VALVE
PUMP
N. O.
SOL A/B
POWER WIRING
BE PROVIDED BY CUSTOMER
FUSED DISCONNECT SWITCH TO
3 PHASE / 4 WIRE SERVICE AND
L1
L3
L2
FU
FU
FU
DISC
5 HP PUMP
OL
L2
L3
L1
M
T2
T3
T1
MTR
(115V AC AND 24V DC)
SUBPANEL LAYOUT AND CONNECTION DIAGRAM
GRD
INTERNAL
FIELD WIRING
LEGEND
WIRE LUG
WIRING
1M
1M
1SOL
1SOL
1PS
GRD
TO UPPER VALVE
PROCESS AIR
CONNECTION
FROM CONTROLLER OUTPUT
FOR VACUUM SOLENOID
TO TERMINAL A1 (NEUTRAL)/(+24 VDC)
ON MOTOR STARTER (M)
FROM CONTROLLER OUTPUT
FOR BLOWBACK SOLENOID
FROM CONTROLLER OUTPUT
FOR PUMP MOTOR STARTER
TO MOTOR
(MTR)