Inspection And Maintenance Schedule; Daily - Trane Manhattan Gen II Installation, Operation And Maintenance Manual

Maintenance Procedures
NOTICE
Component Damage!
Failure to follow instructions could damage sensitive
electronic components beyond repair. To prevent arcing
or surges of electrical current, do not use wires or
cables to jump components or bypass the
manufacturer's safety systems.
Federal Clean Air Act
Responsible refrigerant practices are important to the
environment, our customers, and the air conditioning
industry. All technicians who handle refrigerants must be
properly certified. The Federal Clean Air Act prescribes
procedures for handling, reclaiming, recovering, and
recycling of refrigerants and the equipment that must be
used in maintenance procedures involving potential
leakage of HVAC refrigerants. State and local
Table 10. Recommended chiller service intervals
Visually inspect the chiller
Log pressure and temperatures
Inspect touchscreen interface panel for alarm history
Clean strainers on the inlet water pipe
Check the compressor oil level sight glass
Confirm the glycol concentration
Confirm the refrigeration pressures
Check the refrigeration liquid line sight glass
Inspect refrigerant pressures and temperature set points
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])
Inspect the evaporator entering and leaving evaporator temperature
Collect water/glycol mixture sample for analysis
Inspect crankcase heaters
Inspect piping for signs of leaks
Inspect refrigerant piping for oil or refrigerant leaks
Observe refrigeration operating pressures
Confirm motor amperage draw and voltage
Confirm chiller superheat and sub-cooling
Check for worn or burned contactors
Inspect all electrical connections and fuses
Inspect each compressor for refrigerant pressures, overheating, oil leaks
Inspect compressor terminals for pitting, corrosion, and loose connections
Inspect compressor oil level
Confirm and record compressor amperage draw and voltage
Compare water/glycol flow against design specifications
Tighten compressor rotalock nuts
50
governments may have additional requirements that must
be followed to responsibly handle HVAC refrigerants.
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.

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.
Task Frequency
Daily
Daily
Weekly
Monthly
Monthly
Monthly
Monthly
Monthly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Annually
Annually
Annually
Annually
Annually
Annually
Annually
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