Conair 0.25 to 1.5 ton, User Manual

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Page: 15
UGH020/0301 VL Series Portable Chillers, 0.25 to 1.5 Tons
B. OPERATIONS
1. Turn the thermostat to the highest setting.
2. Shift the illuminated toggle switch to the ‘ON’ position.
The pump will begin operations. Note the reservoir level, if
it drops below 3/4 full, add fluid.
3. Check the unit and process system for leaks. Repair any that
are discovered.
4. Adjust the setpoint thermostat as required for the process.
5. Note, the compressor will start if the fluid temperature is
above the selected setpoint temperature. When the
compressor starts, listen for any knocking or other unusual
noise. Report any unusual noise to the Service department
and discontinue operations.
6. Do not operate the unit without all sheet metal enclosure
panels secured.
7. Process flow is adjusted according to the pump motor
amperage. This rating can be found on the pump motor
data plate.
a. With all process valves fully open and with the
pump motor operating, check amp draw with an
amp meter and note findings.
b. Compare amp draw with pump motor rating. If
excessive, partially close the from process valve to
adjust motor amps.
3.3 INSTRUMENT OPERATION
A. GENERAL DESCRIPTION
A. The EWPC 902/T/R/P controller is a new series of
microprocessor-based and fully programmable process
controllers for single point applications.
B. The front keypad of this controller offers several alpha-
numeric menu prompts to configure the controller for each
specific application).
B. FRONT KEYPAD
1. SET: push to display the setpoint value. The setpoint can be
changed by using the “up” or “down” button. The control
will automatically switch back to normal operating mode
within 3 seconds. The last entered setpoint will stay in
memory.