Trane RTHD

RTHD-SVX01D-EN 129
Periodic Maintenance
• Perform all weekly and monthly maintenance procedures.
• Check the refrigerant charge and oil level. Refer to “Maintenance Proce-
dures”. Routine oil changing is not necessary on a hermetic system.
• Have a qualified laboratory perform an oil analysis to determine system
moisture content and acid level
.
NOTE: IMPORTANT: 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
• Check the pressure drop across the oil filter. Refer to “Maintenance Pro-
cedures”.
• Contact a qualified service organization to leak check the chiller, to
inspect safety controls, and inspect electrical components for deficien-
cies.
• Inspect all piping components for leakage and/or damage. Clean out any
inline strainers.
• Clean and repaint any areas that show signs of corrosion.
• Test vent piping of all relief valves for presence of refrigerant to detect
improperly sealed relief valves. Replace any leaking relief valve.
• Inspect the condenser tubes for fouling; clean if necessary. Refer to
“Maintenance Procedures”.
• 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.
NOTE: It may be desirable to perform tube tests on these components at
more frequent intervals, depending upon chiller application. This is especially
true of critical process equipment.
• Depending on chiller duty, contact a qualified service organization to
determine when to conduct a complete examination of the unit to deter-
mine the condition of the compressor and internal components.
Operating Log
A sample of several operating logs and checklists have been included.