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RLC-SVX09Q-EN
Maintenance
Overview and Maintenance
Checks
This section describes preventative maintenance
procedures and intervals. Use a periodic maintenance
program to confirm optimal performance and efficiency of
the Series R units.
An important aspect of the chiller maintenance program is
the regular completion of operator logs. See Check Sheets
chapter for an example. When filled out properly, the
completed logs can be reviewed to identify any developing
trends in the chiller's operating conditions.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
WARNING
Live Electrical Components!
Failure to follow all electrical safety precautions when
exposed to live electrical components could result in
death or serious injury.
When it is necessary to work with live electrical
components, have a qualified licensed electrician or
other individual who has been properly trained in
handling live electrical components perform these
tasks.
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:
• Log the chiller.
• Check evaporator and condenser pressures with
gauges and compare to the reading on the unit chiller.
Pressure readings should fall within the specified
ranges listed in Table 23, p. 65 and Table 24, p. 65. If
chiller measurements vary significantly from values
listed, problems may exist with refrigerant and oil
charge levels. Contact local Trane service.
Note: Optimal condenser pressure is dependent on
condenser water temperature, and should equal the
saturation pressure of the refrigerant at a
temperature 2 to 5°F above that of leaving
condenser water at full load.
Monthly Maintenance and Checks
• Review operator log.
• Clean all water strainers in both the chilled and
condensing water piping systems.
• Measure and log the subcooling and superheat.
• See “Refrigerant and Oil Charge Management,” p. 65.
If chiller measurements vary significantly from values
listed in Table 23, p. 65 and Table 24, p. 65, problems
may exist with refrigerant and oil charge levels. Contact
local Trane service.
Annual Maintenance
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
Shut down the chiller once each year to check the
following:
• Perform all weekly and monthly maintenance
procedures.
• Have a qualified laboratory perform an oil analysis to
determine system moisture content and acid level.
Note: Due to the hygroscopic properties of the POE oil,
all oil must be stored in metal containers. The oil
will absorb water if stored in a plastic container.
• Contact Trane service organization to leak check the
chiller, to inspect safety controls, and inspect electrical
components for deficiencies.
• Inspect all piping components for leakage and/or
damage. Clean out any inline strainers.
• Clean and repaint any areas that show signs of
corrosion.
• Inspect vent piping of all relief valves for presence of
refrigerant to detect improperly sealed relief valves.
Contact Trane service if unusual conditions are
observed.
• Inspect the condenser tubes for fouling. Clean if
necessary. See “Cleaning the Condenser,” p. 65.
• Check to make sure that the crank case heater is
working.
Scheduling Other Maintenance
• Use a nondestructive tube test to inspect the
condenser and evaporator tubes at 3-year intervals.
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