8.2 EXPLANATION TO THE SURVEY OF
PERIODICAL INSPECTIONS
In order to prevent sudden failures as much as
possible, it is recommended to inspect the
compressor periodically at a certain number of
points. In many cases a slight deviation from the
normal situation need in no way yet interfere with
the proper functioning of the compressor, but it
may be indicative of a wrong tendency that might
in the end lead to a failure. Inspection then
enables to take action in time. Thus, a slight but
continuous increase of the discharge pressure may
be indicative, for example, of a polluting
condenser which, if this increase is being noticed,
can be cleaned before the excessive discharge
pressure causes more serious trouble.
The intensity of the required inspection is to be
made dependent on the type of installation and
on the risks involved in failures as far as the object
to be cooled is concerned.
Particularly in case of fully automatically operating
installations, for which little or no personnel is
available, the periodical inspection must not be
neglected.
The table on the back sums up all the points of
the compresor that have to be inspected; it also
contains instructions as to how frequently the
various inspections have to be carried out.
During the first 50 operating hours the
compressor should be checked regularly for all
the points mentioned before, at least twice
every 24 hours and more frequently in cases
where irregularities are found.
However, the list should primarily be used to
prevent certain points of inspection for being
omitted whereby the frequency stated is to be
taken as a standard, also dependent on the
experience gained in practice. In the case of
deviation the fault-finding table should, if
necessary, be consulted (Chapter 10).
Refrigeration Division
Grasso
8. PERIODICAL INSPECTION OF THE OPERATING COMPRESSOR
Page 8.2 Refrigeration Compressors Series RC9 v002.97.10.en
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