PRECISIONAIR WS PRODUCT INFORMATION MANUAL
10
OPERATIONS AND CONTROLLER
ELECTRONIC CONTROL DESCRIPTION
This section describes key features of the
optional ACG7 controller, and how it operates.
The optional ACG7 controller is located behind
the removable front access panel.
WARNING
Never carry out any installation, maintenance
or service, without disconnecting the power
supply.
EMBEDDED CONTROLLER
The built in all in one controller, controls the unit
in the most efficient way. Basic parameters can
be set via on board control panel, from inside
the enclosure. Extended parameter settings, as
well as, logging of operation data, is possible
through the SD card interface.
CONTROL STRATEGY
The controller regulates the fans heater, and
cooling based on desired set points.
• When operating, the evaporator fans will
circulate the indoor air continually.
• When temperature in the enclosure is higher
than set-point the compressor will start, which
initiates cooling.
• The compressor will stop once set-point and
hysteresis is achieved.
• A high temperature alarm (when temp is
higher than 50° C) will initiate an alarm on the
alarm output.
• Low temperature alarm (when temp is lower
than 1° C) will initiate an alarm on the alarm
output.
• The condenser fan operates only when the
actual temperature on the condenser surface
requires this operation.
OPERATION PANEL
The below illustrates the operation panel, from
inside the enclosure.
