Quincy Compressor QED 650, Instruction And Maintenance Manual

Page: 30 / 99

3
Air Logic Controller
3.1 Air Logic
Controller
Control panel
General description
The
Air Logic Controller
automatically controls the dryer, i.e.:
• keeps the pressure dew-point stable
• stops the dryer whenever necessary
• restarts the dryer when required
In order to control the dryer and to read and modify programmable parameters, the
controller
has a
control panel provided with:
• LEDs indicating the status of the dryer
• a display indicating the operating conditions or a fault
• keys to control the dryer and to access the data collected by the
controller
• buttons to manually start and stop the dryer
In general, the
controller
has following functions:
• controlling the dryer
• protecting the dryer
• automatic restart after voltage failure (made inactive)
Controlling the dryer
The
controller
keeps the pressure dew-point stable at no load by opening or closing the solenoid valve of
the hot-gas by-pass.
In order to keep the condenser pressure constant:
• The
controller
starts and stops the fan motor(s) as necessary.
Instruction book
2920 1818 00 29