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PCA Series Chillers
RMT LED
The orange
RMT
LED is lit during remote operation.
AT LED
The orange
AT
LED flashes during auto-tuning.
SUB1 LED
The orange
SUB1
LED energizes whenever the process temperature is two
degrees (2
°
F/ºC) or more below the To Process set point. The compressor then
shuts down by means of a latching circuit, and does not run again until the
temperature at the To Process thermocouple is two degrees (2
°
F/ºC) above the
set point.
This +2
°
F/ºC control set point is factory-set for proper compressor operation.
Changing it is
not recommended
without consulting the AEC Service
Department.
5-4 Temperature Controller Keys
AT
AT Key
Press and hold the
AT
AT
key for two seconds to initiate
or
stop
the auto-tune function.
Display Key
The functions of the
Display
key change, based on how
long you press it. Press the
Display
key for less than one (1)
second to scroll through parameters within the mode.
Press the
Display
key for at least one (1) second or more to display
the menu; this function also lets you select the mode you need to
adjust.
