AEC VacTrac Series Conveying Systems - Manual (Page 64)

Page 64 VacTrac™ Series Conveying Systems
WH2-605A.4 Mechanical Components
3-26 Running Remote Proportioning Valve or
Proportioning Vacuum Receiver Compressed Air
Lines
You must run compressed air to any proportioning valves in the
system. Refer to the Proportioning Valve operating manual for
detailed installation and operation information.
3-27 Making Electrical Connections
Refer to local electrical codes, the schematic, and connection
diagrams supplied with this unit and the serial tag for wiring
considerations. Run all wiring in conduit if codes require it. Label
all wiring to make any future troubleshooting easier. Make all
electrical connections tight.
3-28 Making VacTrac Pump Power Drop Wiring
Connections
VacTrac pump packages are connected to a three-phase power
supply. Bring properly sized power leads in conduit to the contacts
in the junction box of each pump package in the system.
; Install a properly-sized fused disconnect switch with lockout
on the main lines to each vacuum pump package. This is
recommended even for pumps with optional fused disconnects.
; Check the serial tag for voltage and amperage requirements.
On 60 Hz units, voltage supplied to the unit must be within
plus or minus ten percent (
±10%) of the serial tag value; on
50 Hz units, within plus or minus five percent ( ±5%) of the
serial tag value. Phase imbalance must be less than 2% in
accordance with NEMA MG1-14.32.
; Ground the unit for operator safety and equipment protection.