Sterling 882.00379.00 manual Junction BOX on Vacuum Pump

Figure 40: Typical SPDB 25, 30 Series Junction Box with Fused Disconnect Wiring Diagram

										(FROM DISC-3)
									TO TERMINAL A1 (NEUTRAL)
GRD									ON MOTOR STARTER (M)
								FROM CONTROLLER		(FROM DISC-4)
	(NEUTRAL)							OUTPUT FOR
FROM LI, L2 AND L3								BLOWBACK SOLENOID		FROM CONTROLLER OUTPUT
AT BOTTOM OF								FROM CONTROLLER		FOR PUMP MOTOR STARTER
DISCONNECT SWITCH
(DISC)	L1		L2		L3		OUTPUT FOR VACUUM			(115VAC)
								SOLENOID	L1	L2	L3
			A1
	1	3			5			1C
		L2			L3
	L1					13
							M
	T1	T2			T3	14		TO SOL A
	2	4			6
		A2		A2				TO SOL B
	J1		TEST		RESET			TO TERMINAL #96
				TRIPPED			OL
	95		96	97		98		ON OVERLOAD (OL)
FROM DISC-2								TO			DISC
	2	T	4	T	6	T		VACUUM
		1		2		3			L1	L2
								SWITCH			L3
								(VS)
	T1		T2			T3		TO L1, L2 AND L3
TO MOTOR								ON MOTOR STARTER (M)
(MTR)
								FROM DISC-1		VS
						TO CONTROLLER INPUT
							FOR HIGH VACUUM

SUB PANEL LAYOUT AND CONNECTION DIAGRAM

(115V AC)

	SOL A/B
	KAY VALVE
LOCATED ON
		PUMP
		VACUUM
		COMMON
TO		BLOWBACK
JUNCTION
BOX
		DISC			3 PHASE / 4 WIRE SERVICE
					TO BE PROVIDED BY CUSTOMER
		L1	FU		M	OL	T1
					L1
		L2	FU		L2		T2
								MTR	5 H.P. PUMP
		L3	FU		L3		T3
					POWER WIRING WITH DISCONNECT SWITCH
				DISC
				DISC-1	VS				TO CONTROLLER INPUT
		(115V AC)
									FOR PUMP HIGH VACUUM
						N.O.
									(NEUTRAL)
				DISC-2	0L	J1
FROM CONTROLLER OUTPUT									VACUUM PUMP
								M
FOR PUMP MOTOR STARTER					96	95	A2	A1	MOTOR STARTER
				DISC-3				SOL A	VACUUM
FROM CONTROLLER OUTPUT
									SOLENOID ON PUMP
FOR PUMP VACUUM
SOLENOID				DISC-4				SOL B
FROM CONTROLLER OUTPUT									BLOWBACK SOLENOID
									ON PUMP
FOR PUMP BLOWBACK					CONTROL WIRING
SOLENOID

						FROM CONTROLLER OUTPUT
GRD						FOR VACUUM SOLENOID
						TO TERMINAL A1 (+24VDC)
						ON MOTOR STARTER (M)
(FROM DISC-1)						FROM CONTROLLER OUTPUT
						FOR BLOWBACK SOLENOID
FROM L1, L2 AND L3
AT BOTTOM OF						(+24VDC)
DISCONNECT SWITCH
(DISC)		L2		L3
L1						L1	L2	L3
		A1
1	3			5
	L2			L3
L1					13
						M
T1	T2			T3	14
2	4			6		TO TERMINAL A1
	A2		A2			(+24VDC) ON
						MOTOR STARTER (M)
J1		TEST			RESET
		96	TRIPPED			OL
95			97		98
FROM CONTROLLER OUTPUT								DISC
FOR PUMP MOTOR STARTER
2	T	4	T	6	T
	1		2		3	L1	L2	L3
T1		T2			T3	TO L1, L2 AND L3
						ON MOTOR STARTER (M)
TO MOTOR
(MTR)
						(0VDC)		VS
					TO CONTROLLER INPUT
						FOR HIGH VACUUM

		JUNCTION BOX ON VACUUM PUMP
		115V AC CONTROL VOLTAGE
SOL A/B
KAY VALVE
LOCATED ON
	PUMP
	VACUUM	VS
	COMMON	(0V DC)
TO	BLOWBACK	N.O.
JUNCTION
BOX

FROM CONTROLLER OUTPUT		0L	J1
				M
FOR PUMP MOTOR STARTER	96	95	A2	A1
FROM CONTROLLER OUTPUT			SOL A
FOR PUMP VACUUM
SOLENOID			SOL B
FROM CONTROLLER OUTPUT
FOR PUMP BLOWBACK
SOLENOID	CONTROL WIRING

JUNCTION BOX ON VACUUM PUMP 24V DC CONTROL VOLTAGE

DISC-1

TO CONTROLLER INPUT FOR PUMP HIGH VACUUM

(+24V DC)

VACUUM PUMP

MOTOR STARTER

VACUUM

SOLENOID ON PUMP

BLOWBACK SOLENOID ON PUMP

SUB PANEL LAYOUT AND CONNECTION DIAGRAM

(24V DC)

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.

Conveying System Mechanical Components Chapter 3: Installation 75 of 138