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Periodic Maintenance
Perform all maintenance procedures and inspections at the recommended intervals. This will prolong the life
of the unit and minimize the possibility of costly failures.
An important aspect of the unit maintenance program is the regular completion of an operating log, an
example of this log is provided in this manual, through TD7 interface shown in
When filled out properly the completed logs can be reviewed to identify any developing trends of operating
conditions and prevent possible failure of the unit.
Weekly Maintenance and Checks
After the unit has operated for approximately 30 minutes and the system has stabilized, check the operating
conditions and complete the procedures below:
1.
Log the unit.
2.
Check compressor discharge and suction pressures with gauges and compare to the reading on the TD7.
Pressure readings should fall within the specified ranges listed in
significantly from values listed in the table, problems may exist with refrigerant charge levels. Contact your
local Trane Service Agency.
3.
Observe and clean the air side fin-tube heat exchanger if blocked.
4.
Record the water pressure drop across the evaporator. Clean water strainer if necessary.
5.
Check the temperature differential between the two sides of the refrigerant filter and oil return filter. Replace
the filter element if necessary.
6.
Inspect the entire system for unusual conditions and repair if needed.
NOTICE - Each RTXC XE unit is factory leak-tested, refrigerant charged and tested for proper
operations prior to shipment. Identify and repair the leak point beofore field charge to avoid
refrigerant over charge and excessive power consumption.
Monthly Maintenance and Checks
1.
Review operating log.
2.
Perform all weekly maintenance procedures.
3.
Measure the system subcooling.
4.
Record the system superheat.
5.
Clean water strainers in the chilled water piping systems if needed.
Annual Maintenance
WARNING - Hazardous Voltage!
Disconnect all electric power, including remote disconnects. Follow proper lockout/tagout
procedures to ensure the power cannot be inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
1.
Perform all weekly and monthly maintenance procedures.
2.
Check the pressure drop of internal oil filter, and temperature difference on liquid line.
3.
Check the oil level of oil separator while the unit is off.
Note: Routine changing of the oil is not required. Have a qualified laboratory perform an oil analysis to
determine system moisture content and acid level.
4.
Contact a qualified service organization to leak test the unit, to check operating and safety controls, and to
inspect electrical components for deficiencies.
Table
9. If unit measurements vary
47
Figure 18
and
Figure
19.
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