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All normal operating functions can be controlled from the
microKool PC-1 control panel.
PC-1 CONTROL
FEATURES
microKool Portable Chillers UGH004/0999
4-2 OPERATION
Setpoint adjustment buttons
Press ▲ or ▼ to enter the process
temperature setpoint, SPI parameters
and passcodes.
Press ▲ to increase a value.
Press ▼ to decrease a value.
TIP: Press and hold the button for
faster scrolling speed.
NOTE: Passcode protection prevents
accidental or unauthorized changes to
all operating parameters. If passcode
protection has been enabled, you must
enter the correct passcode to change
the process temperature setpoint.
Actual values display
The green window displays the temperature
at the middle of the process. This is calculat-
ed as an average of the process fluid tem-
peratures at the chiller inlet and outlet.
The lights indicate whether the temperature
is in degrees Fahrenheit or Celsius. See the
I
NSTALLATION
section for instructions on how
to change the temperature units.
Setpoint display
The Setpoint display shows the
setpoints entered for fluid temper-
ature, high and low temperature
deviation alarms, the SPI baud
rate, and the SPI address.
Setpoint and Actual value display
windows also display some alarm
codes and setup instructions.
Run/Stop
Press the RUN button to
start normal operation.
Press STOP to stop the
unit.
= Running (green)
= Stopped (red)
= Alarm (red, flashing)
Status lights
The lights indicate the oper-
ating status of the listed
components. Except in Test
Mode, the lights indicate:
= Off or inactive
= On or active (green)
= Alarm condition (red)
Test Mode is used for test-
ing displays, keys and
input/output functions. When
test mode is enabled, nor-
mal operation is disabled.
= Test Mode off
= Test Mode on (red);
unit disabled
Alarm
Press to acknowledge the
alarm light and silence the
optional audible alarm. The
alarm light will flash until the
cause of the alarm condition
is fixed. See Troubleshooting
for alarm descriptions and
remedies.
Setpoint Select button
Press repeatedly until a green light appears
next to the parameter you want to program
or view.
NOTE: Default settings for the
deviation setpoints are:
High = setpoint + 10° F
Low = setpoint - 10° F
A warning alarm occurs (indicator light red)
whenever the actual temperature is outside
this setpoint range for more than 15 min-
utes. Recommended setting: ± 2-10° F.