AEC 1-Pump 1-Station Controller - Manual (Page 20)

1 –Pump 1-Station Controller Chapter 4: Operation 19 of 30
Figure 4: Control Panel Components
Optional material receiver
selector switch
Power On
indicator light
Power On/Off
toggle switch
SINGLE STATION TIME-FILL
SELECTOR
MATERIAL RECEIVER
CONTROL POWER
10
9
8
7
6 5
4
3
2
1
OFF
ON
4-4 Operation Sequence
Once the controller has been energized, the following will occur:
1. The dump delay/blowback sequence occurs.
2. The vacuum pump/blower motor starts and the pump vent valve directs vacuum
through the material receiver.
3. The material discharge valve seals under the vacuum.
4. The material receiver fills until the DIP switch-set vacuum timer times out.
5. The vent valve shifts, breaking vacuum.
6. The dump delay blowback sequence begins. The material discharge valve opens and
the material leaves the receiver.
If the switch on the material discharge valve senses a full machine bin, the vacuum pump
motor shuts down, based on an adjustable auto-shutdown time. When the controller senses a
need for material, it restarts the cycle after Step 1.
4-5 Shutting Down the System
1. Move the power switch on the control box to the OFF position.
2. Disconnect main power to the pump package at the disconnect switch in the junction
box.
3. For maintenance or long-term shut-down, unplug the control panel from the power
source, disconnect main power to the vacuum pump motor, and turn off compressed
air.