Chapter 5 Maintenance and Inspection
UD-series Screw Compressor 5.2 Maintenance and Inspection List
5-6
5.2.3 Guidelines for Compressor Overhaul Frequency
When servicing or overhauling the compressor, follow the instructions and guidelines described below.
The compressor inspection frequency significantly differs depending on the operating conditions,
refrigerant in use, type and condition of lubricant, and the system in which the compressor is operated.
The table below indicates the overhaul frequency recommended by
based on the
operating conditions of the compressor.
Table 5-4 Standard Package Operaion Conditions and Overhaul Frequency Guidelines
Application
Recommended Overhaul
Frequency
Remarks
Cold storage and refrigeraion 40,000 hours or 5 years
Relatively stable operating
Note 1: The above guidelines are only applicable when the compressor is operated within the
operation limits which are specified separately. (See Chapter 2, Section 2.3.2 "Operation
Limits" in this manual.)
Note 2: The above guidelines are only applicable when the compressor undergoes daily and
periodical inspections specified separately. (See 5.2.1 "Daily Management" in this manual.)
Note 3: Inspect the compressor at the intervals ofspecified period or operating hours, whichever
comes first.
Note 4: The above guidelines do not constitute any warranty.
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