Trane Cold Generator CGWR Series Installation, Operation And Maintenance Manual page 39

Inspect the entire system for unusual conditions. Use an
operating log to record a weekly operating conditions
history for the unit. A complete operating log is a valuable
diagnostic tool for service personnel.
Monthly Maintenance
Once the unit has been operating for about 10 minutes and
the system has stabilized, check operating conditions and
complete the checkout procedures that follow.
• Perform all weekly maintenance procedures.
• Check refrigerant superheat at the compressor suction
line. Superheat should be in the range of 10°F–20°F .
Note: A superheat calculated value is incorporated
into the unit controller.
• Inspect the entire system for unusual conditions.
Review the weekly operating log for conditions history
for the unit and take note of any unusual trends in
performance. Take appropriate preventative actions if
necessary.
Annually
Perform all weekly and monthly maintenance procedures.
• Have a qualified service technician check the setting
and function of each control and inspect the condition
of and replace compressor and control contacts if
needed.
• If chiller is not piped to drain facilities, make sure drain
is clear to carry away system water.
• Drain water from condenser (CGWR only) and
evaporator and associated piping systems. Inspect all
piping components for leakage, damage, etc. Clean
out required evaporator strainer.
• Inspect condenser tubes and clean, if needed.
• Clean and repaint any corroded surface.
• Clean remote condenser coils (CCAR only). Refer to the
condenser manufacturer's recommendations.
CG-SVX038A-EN
Maintenance
39