ClimaCool UCA Manual - Manual (Page 27)

27
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Chiller Operation and Maintenance
Pressure and Temperature Log
A log of temperatures and pressures should be taken
regularly. Periodically conduct a visual inspection of the
chiller to identify problems before they reach the point
of failure. As with any mechanical system, it is necessary
to conduct a series of checks to the ClimaCool chiller to
confi rm correct operation.
Maintaining a Daily Log
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Daily
•
A daily operational log should be kept.
• Perform visual inspection.
• Record entering and leaving chiller water temperatures
and pressures.
• Note any problems that may exist and immediately plan
for further investigation. If repair is necessary, schedule
for earliest possible date.
• Properly document all data taken.
Weekly
•
Review daily log from previous week.
• Perform visual inspection.
• Properly document all data taken.
• Note any problems that may exist. Immediately plan for
further investigation. If repair is necessary, schedule for
earliest possible date.
Quarterly
Check controller operating parameters and setpoints.
• Check temperature drop/rise on heat exchanger. *
• Check compressor oil level.
• Check compressor oil color.
• Check water fl ow rates and pressure drops across
evaporator heat exchanger.
• Properly document all data taken.
* The temperature drop/rise on a fully loaded (both compressors)
heat exchanger is generally 10°F. If only one compressor is
running the temperature drop/rise will be approximately
5°F. Some projects are designed to have a higher or lower
temperature drop on the evaporator depending on application.
Consult the bank performance sheet for your specifi c project
for these values. If the temperature drop/rise is greater than the
design, your heat exchanger may need to be back fl ushed or the
strainer may need to be cleaned.
Annual
•
Back fl ush all heat exchangers. If fouling is suspected,
use only ClimaCool recommended de-scalers (see page
28 - Chemical Clean In Place Washing).
• Remove and clean all waterside strainers.
• Manually operate all waterside isolation valves, if
provided, on each module.
• Check all electrical connections for tightness.
• Perform leak check on all refrigerant circuits.
• Check all header piping couplings for tightness.
• Check oil level and color on each compressor.
• Check and test all refrigerant safeties for proper
operation.
• Check all peripheral systems for proper operation.
• Check and test CoolLogic Control System.
• Verify setpoints, sensors and general control
confi guration.
• Properly document all data taken.