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microKool Portable Chillers UGH004/0999
PC-1 microprocessors control the process temperature based
upon the average of the temperatures recorded at the supply
(to process) and return (from process) thermocouples.
The PC-2 microprocessor allows you to select how the unit
will measure and control the process temperature. The control
point can be selected as the supply, the return or the average
of the the two temperatures.
To select the control point source on units with PC-2 control:
Disconnect and lockout power to the unit.
Open the electrical enclosure.
Set dip switches 3 and
6 to the OFF position.
Set dip switch 5 to the
ON position.
Close the electrical enclosure and restore
power to the unit.
Press any button when the control displays
“Cnt Pt”.
The controller will
display “Sel CnP”
and flashes the LED
for the current con-
trol point.
Select a new control point using the Display
button.
Stop pressing the select button until the indicator light next
to the control point you want illuminates.
3-12 INSTALLATION
1
2
3
4
5
6
WARNING: Electric shock hazard
This equipment is powered by high voltage. Always
disconnect and lock out the main power source
before opening the unit or the electrical enclosure to
modify factory settings. Failure to disconnect and
lock out the main power source can result in severe
personal injury.
12
3
4
5
6
7
8
SELECTING THE
TEMPERATURE
CONTROL POINT
(PC-2 CONTROL ONLY)
7