Air Logic Controller - Quincy Compressor QED 650 Instruction And Maintenance Manual

Instruction book

Air Logic Controller

3
Air Logic Controller
3.1
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.
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