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Conveying System Mechanical Components Chapter 3: Installation 72 of 138
Figure 37: Typical SPD Series Junction Box with Fused Disconnect Wiring Diagram
115V AC CONTROL VOLTAGE
JUNCTION BOX ON VACUUM PUMP
TO BE PROVIDED BY CUSTOMER
3 PHASE / 4 WIRE SERVICE
(0V DC)
FROM CONTROLLER OUTPUT
BLOWBACK SOLENOID
FOR FILTER CHAMBER
FROM CONTROLLER OUTPUT
FOR PUMP MOTOR STARTER
FOR PUMP VACUUM/VENT
FROM CONTROLLER OUTPUT
(115V AC)
L2
L3
L1
BLOWBACK SOLENOID
ON FILTER CHAMBER
SOL B
(+24V DC)
MOTOR STARTER
VACUUM PUMP
PUMP HIGH VACUUM
SOLENOID ON PUMP
VACUUM/VENT
OPTIONAL ATMOSPHERIC
VALVE ON FILTER CHAMBER
TO CONTROLLER INPUT FOR
VS
SOL A
SOL C
0L
96 95 A2
J1
N.O.
M
A1
CONTROL WIRING
ON FILTER CHAMBER
BLOWBACK SOLENOID
(NEUTRAL)
PUMP HIGH VACUUM
TO CONTROLLER INPUT FOR
VACUUM/VENT
VACUUM PUMP
SOLENOID ON PUMP
MOTOR STARTER
VALVE ON FILTER CHAMBER
OPTIONAL ATMOSPHERIC
0L
SOL A
SOL B
SOL C
96 95 A2
J1
A1
M
VS
N.O.
POWER WIRING WITH DISCONNECT SWITCH
FU
FU
FU
L2
L3
L1
M
T2
T3
OL
T1
MTR
5 H.P. PUMP
SOLENOID
24V DC CONTROL VOLTAGE
JUNCTION BOX ON VACUUM PUMP
CONTROL WIRING
DISC-1
DISC-2
DISC-3
DISC-4
DISC-1
DISC
DISC
SUB PANEL LAYOUT AND CONNECTION DIAGRAM
ON MOTOR STARTER (M)
FROM CONTROLLER OUTPUT FOR
TO TERMINAL A1 (+24VDC)
VACUUM/VENT SOLENOID
TO MOTOR
(24V DC)
T2T1 T3
TO CONTROLLER INPUT FOR
HIGH VACUUM
(0VDC)
ON MOTOR STARTER (M)
TO L1, L2 AND L3
DISCONNECT SWITCH
AT BOTTOM OF
FROM L1, L2 AND L3
FROM CONTROLLER OUTPUT
FOR PUMP MOTOR STARTER
(+24VDC)
OL
2
T1
1
L1
3
L2
5
L3
13
A1
A2
T2
4
T3
6
14
A2
95
96
97 98
TEST
TRIPPED
RESET
2
T
1
T
2
T
3
4 6
J1
M
L1 L2 L3
(+24VDC) ON
TO TERMINAL A1
MOTOR STARTER (M)
L1
L1
(FROM DISC-1)
VS
DISC
L2
L3
L2 L3
TO TERMINAL A1 (NEUTRAL)
ON MOTOR STARTER (M)
SUB PANEL LAYOUT AND CONNECTION DIAGRAM
FROM DISC-2
TO MOTOR
(115V AC)
FOR HIGH VACUUM
TO CONTROLLER INPUT
FROM DISC-1
OL
2
T1
1
L1
3
L2
5
L3
13
A1
A2
T2
4
T3
6
14
A2
95
96
97
98
TEST
TRIPPED
RESET
2
T
1
T
2
T
34 6
J1
T2T1 T3
M
TO TERMINAL #96
ON OVERLOAD (OL)
SWITCH
VACUUM
(VS)
TO
TO L1, L2 AND L3
ON MOTOR STARTER (M)
L1
TO SOL B
TO SOL A
FROM L1, L2 AND L3
AT BOTTOM OF
DISCONNECT SWITCH
L1
L2 L3
(NEUTRAL)
OUTPUT FOR VACUUM/
FROM CONTROLLER
SOLENOID
FROM CONTROLLER OUTPUT
FOR BLOWBACK
VENT SOLENOID
L1
VS
DISC
L2
L3
FOR MOTOR STARTER
FROM CONTROLLER OUTPUT
(115VAC)
L2 L3
(FROM DISC-3)
GRD
(DISC)
(MTR)
GRD
(DISC)
(MTR)
Note: This information is shown for reference only. Refer to the electrical
Schematics that were supplied with your equipment and controls for specific
wiring information.