RTHD-SVX01D-EN
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.
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