X-Periodic Maintenance - Trane R Series Installation Operation & Maintenance

RTAC-SVX002A-EN

X-Periodic 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 re-
cord an operating history for the unit.
The log serves as a valuable diagnostic
tool for service personnel. By observing
trends in operating conditions, an opera-
tor can anticipate and prevent problem
situations before they occur. If the unit
does not operate properly during main-
tenance inspections, refer to "Diagnos-
tics and Troubleshooting".
After the unit has been operating for
approximately 30 minutes and the sys-
tem has stabilized, check the operating
conditions and complete the 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.
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 pro-
cedures.
2. Record the system subcooling.
3. Make any repairs necessary.
Annual Maintenance
1. Perform all weekly and monthly pro-
cedures.
2. Check oil sump oil level while unit is
off.
NOTE: Routine changing of the oil is not
required. Use an oil analysis to deter-
mine the condition of the 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 organiza-
tion to leak test the chiller, to check oper-
ating and safety controls, and to inspect
electrical components for deficiencies.
5. Inspect all piping components for
leakage and damage. Clean out any in-
line strainers.
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, includ-
ing remote disconnects before ser-
vicing. Follow proper lockout/tagout
procedures to ensure the power can-
not be inadvertently nergized. For
variable frequency drives or other
energy storing components provided
by Trane or others, refer to the appro-
priate manufacturer's literature for al-
lowable waiting periods for discharge
of capacitors. Verify with an appropri-
ate voltmeter that all capacitors have
discharged. Failure to disconnect
power and discharge capacitors be-
fore servicing could result in death or
serious injury.
Note: For additional information re-
garding the safe discharge of capaci-
tors.
8. Check and tighten all electrical con-
nections as necessary.
100