Maintenance; Weekly Maintenance; Monthly Maintenance; Annual Maintenance - Trane R Series Installation, Operation And Maintenance Manual

Maintenance

Perform all maintenance procedures and inspections at
the recommended intervals.This will prolong the life of
the chiller and minimize the possibility of costly failures.
Use an "Operator's Log" , such as that shown at the end of
the section, to record an operating history for unit.The log
serves as a valuable diagnostic tool for service personnel.
By observing trends in operating conditions, an operator
can anticipate and prevent problem situations before they
occur. If unit does not operate properly during
maintenance inspections, see "Diagnostics and
Troubleshooting" .
After unit has been operating for approximately 30
minutes and system has stabilized, check the operating
conditions and complete procedures below:

Weekly Maintenance

While unit is running in stable conditions.
1. Check MP pressure for evaporator, condenser and
intermediate oil.
2. Observe liquid line sight glass on EXV.
3. If liquid line sight glass has bubbles measure the
subcooling entering the EXV.The subcooling should
never be less than 4 °F under any circumstances.
Important: A clear sightglass alone does not mean that
the system is properly charged. Also check
the rest of the system operating conditions.
4. Inspect the entire system for unusual conditions and
inspect the condenser coils for dirt and debris. If the
coils are dirty, refer to coil cleaning.

Monthly Maintenance

1. Perform all weekly maintenance procedures.
2. Record the system subcooling.
3. Make any repairs necessary.

Annual Maintenance

1. Perform all weekly and monthly procedures.
2. Check oil sump oil level while unit is off.
Note: Routine changing of oil is not required. Use an oil
analysis to determine condition of oil.
3. Have a qualified laboratory perform a compressor oil
analysis to determine system moisture content and
acid level.This analysis is a valuable diagnostic tool.
4. Contact a qualified service organization to leak test the
chiller, to check operating and safety controls, and to
inspect electrical components for deficiencies.
5. Inspect all piping components for leakage and
damage. Clean out any inline strainers.
RTAC-SVX01J-EN
6. Clean and repaint any areas that show signs of
corrosion.
7. Clean the condenser coils.
WARNING
Hazardous Voltage w/Capacitors!
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer's
literature for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged. Failure to disconnect
power and discharge capacitors before servicing could
result in death or serious injury.
For additional information regarding the safe discharge
of capacitors, see PROD-SVB06A-EN
8. Check and tighten all electrical connections as
necessary.
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