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Sterling 882.00379.00 User Manual

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Conveying System Mechanical Components    Chapter 3: Installation 
70 of 138 
Figure 35:  Recommended Field-Installed Optional Station Bypass Switch 
A
B
Wiring without Station Bypass Switch
Bin-Full switch (LS)
N. O.
(normally open, held closed)
A1
B
A
Wiring with Station Bypass Switch
Station Bypass switch
(TS)
Off
On
Bin-Full switch
(LS)
 
Connecting the Control Panel to the Pump Package 
Note:  Consult the specific schematics and Operation & Instruction manual supplied 
with your controller for your specific application. 
•
  Wire the pump package motor starter coil (M) to the terminal provided in the 
conveying system control panel enclosure. 
•
  Wire the pump package vacuum relief valve solenoid (SOL A) to the terminal provided 
in the conveying system control panel enclosure. 
•
  Wire the pump package high vacuum switch (VS) to the terminal located in the 
conveying system control panel enclosure. 
•
  On SPDB pumps, wire the pump package blowback solenoid (SOL B) to the terminal 
located in the conveying system control panel enclosure. 
•
  On 115 VAC control voltage systems, run a common hot 115 VAC wire and a 
common neutral wire from the controller to the pump package in the conveying 
system. 
•
  On 24 VDC control voltage systems, run a common +24 VDC wire and a common 0 
(zero) VDC wire from the controller to the pump package in the conveying system. 
 
Note:  Make sure that the pump motor starter, the vacuum relief valve solenoid, and 
the blowback solenoid (if supplied) are the same voltage (24 VDC or 115 VAC) 
as the conveying system control panel control voltage. Consult the control 
panel serial tag and the pump package serial tag.                                            
Wire size depends on control voltage, distance, number of vacuum hoppers, 
and the number of wires in each raceway. Consult a qualified electrician.