AEC Continuous Vacuum/Pressure Conveying Systems - Manual (Page 45)

Page 44 Single- and Dual-Blower Continuous Vacuum/Pressure Systems
5-3 Mechanical Indicators and Safety Features
Single-blower vacuum/pressure systems and dual-blower continuous vacuum and/or
pressure systems include the following components. Proper operation of the system
depends on your adjusting them to your specific material and application.
DANGER!!
You must perform some adjustments
inside the control cabinet with power
ON.
USE EXTREME CAUTION in such
circumstances.
Only qualified personnel who
understand the equipment and who
know the hazards can be allowed to
perform such procedures.
HIGH VOLTAGE MAY BE PRESENT,
WHICH CAN CAUSE SEVERE INJURY
OR DEATH!
BE SAFETY CONSCIOUS!
Vacuum Gauge
The vacuum gauge indicates the operating vacuum on the vacuum side of the
system. It should read up to 10 in. Hg (339 millibars) during normal operation.
It is connected to the cross tee above the blower.
Pressure Gauge
This gauge indicates the operating pressure on the pressure side of the system. It
should read up to 5 psig (34.475 kPa/0.344 bars) during normal operation. It is
located directly in front of the pressure switch.
High Vacuum Switch (1VS)
The vacuum switch protects the vacuum pump from high amperage damage if a
material blockage should occur during conveying. It is located in the junction
box on the standard vacuum pump.