Trane TCAA Series - Page 76

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Table 26. Maintenance schedule (continued)
Task
Daily Quarterly Bi-annually Annually
Other
Ensure all communication cables are secure. X
Ensure all electronic modules are secure. X
Check physical condition of all exposed printed circuit boards
(PCBs).
X
Check all exposed PCBs for dust build-up and clean if necessary. X
Check discharge and suction pressure/temperature sensors for
accuracy against calibrated pressure/temperature gauges.
X
Re-apply Gel Lanoline to connections suggested by Turbocor once
every 2 years to protect against moisture buildup.
X
Electrical Inspection
Verify that all electrical connections on chiller are tight. X
Check and record main power supply voltage to chiller and each
compressor.
X
Check for signs of hot spots/discoloration on power cables, line
reactors, distribution blocks and any other connection point.
X
Check amperages during operation are as per design. X
Check for damaged/stripped wires (around panel doors, casings,
pinch points).
X
Check operation of all system safety devices and interlocks. X
Calibrate temperature sensors. X
Refrigeration Inspection
Check system for leaks using an electronic leak detector. X
Replace relief valves as per your local codes or once every 5 years. X
Verify operation of compressor IGV's, EXV's, Hot Gas Valves,
Staging Valves, Level Sensors.
X
Check system and motor-cooling liquid line to ensure sufficient sub-
cooling.
X
Verify discharge check valve operations. If there is backward gas
flow immediately after stopping the compressor, replace the check
valve.
X
Inspect/clean motor-cooling strainer (if service has taken place). X
Communications and Controls Inspection
Verify communication between HMI, PLC, and BMS via BMS
Interface page.
X
Other Inspections
Verify panel heater is set above 45°F and is in working condition. X
Verify optional heat trace is operating correctly and is set above
33°F.
X
(a)
During motor cooling strainer service or any other service, verify that there is no oil contaminating the refrigeration system.
(b)
This verification should be performed by a competent company using nondestructive equipment. If chiller is under factory warranty, reports should be emailed to arctic.
warranties@tranetechnologies.com.
(c)
Fault and event logs should be emailed to arctic.warranties@tranetechnologies.com if the equipment is under warranty.
Maintenance Procedures