2201Q4JE-MY-C9-N_2018.01.
Chapter 5 Maintenance and Inspection
Compound 2-stage Screw Compressor 4032**C
5.2 Maintenance and Inspection List
5-6
5.2.3
Guidelines for the Timing of Compressor Overhaul
While the overhaul interval for the compressor depends heavily on the conditions of use, type and
condition of the refrigerant and oil, the package unit, and other factors, the table below shows the
recommended interval of overhaul, as a guideline.
Table 5-4 Guidelines for the Timing of Overhaul Based on the Conditions of Use
(standard package)
Conditions of use
Example application
Guideline for the overhaul timing
Relatively stable operating conditions
Refrigeration
5 years or 40 000 hours
Relatively variable operating conditions
Ice making and chilling
4 years or 30 000 hours
Frequent start/stop and relatively variable
operating conditions
Heat pump
3 years or 20 000 hours
Note 1: The above guideline is applicable only when the package unit is used under the standard
operating conditions separately defined. (Refer to Chapter 2, Section 2.3.2 "Operation Limits"
in this manual.)
Note 2: The above guideline is applicable only when the routine and regular inspection services that
are separately defined are performed. (Refer to Section 5.2.1 "Daily Maintenance" of this
chapter.)
Note 3: The inspection shall be performed according to the schedule or operating hours, whichever
comes first.
Note 4: The above guideline is for reference only, and not a warranty period.
