Trane Arctic PolyTherm TM Series, Installation, Operation And Maintenance Manual

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58 ARTC-SVX005B-EN
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Inspection and Maintenance
Schedule
Proactive measures should be taken to prevent
potential problems with the chillers. These include
maintaining a operational log and conducting weekly,
quarterly, and annual inspections of the chiller/heater.
See following table.
Daily
A daily visual inspection can reveal obvious problems.
Keep notes of the chiller performance:
• Log pressures and temperatures.
• Visually inspect of the unit. Check for noises, as well
as, oil or refrigerant leaks.
• Inspect touchscreen display for alarms.
• Inspect modules for obvious leaks.
• Listen for any atypical noises or vibrations.
Table 14. Recommended chiller service intervals
Task
Frequency
Visually inspect the chiller/heater Daily
Log pressure and temperatures Daily
Inspect touchscreen interface panel for alarm history Weekly
Clean strainers on the inlet water pipe Monthly
Check the compressor oil level sight glass Monthly
Confirm the glycol concentration Monthly
Confirm the refrigeration pressures Monthly
Check the refrigeration liquid line sight glass Monthly
Inspect refrigerant pressures and temperature set points Quarterly
Inspect superheat (10 °F to 12 °F [5°C to 6°C]) and sub-cooling temperatures (10°F to 15°F [5°C to 8°C]) Quarterly
Inspect the evaporator entering and leaving evaporator temperature Quarterly
Collect water/glycol mixture sample for analysis Quarterly
Inspect crankcase heaters and observe proper operation Quarterly
Inspect water piping for signs of leaks Quarterly
Inspect refrigerant piping for oil or refrigerant leaks Quarterly
Observe refrigeration operating pressures Quarterly
Confirm motor amperage draw and voltage Quarterly
Confirm chiller/heater superheat and sub-cooling Quarterly
Check for worn or burned contactors Quarterly
Inspect all electrical connections and fuses Annually
Inspect each compressor for refrigerant pressures, overheating, oil leaks Annually
Inspect compressor terminals for pitting, corrosion, and loose connections Annually
Inspect compressor oil level Annually
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