B2.2 First maintenance
The maintenance schedule below indicates after
how many operating hours maintenance
operations have to be carried out. This schedule
can be regarded as a directive, based on the
experience gained with a large number of
compressors.
For most of the maintenance operations the
compressor must be put out of action. In order to
avoid that this should take place at inconvenient
times, the operations should as much as possible
be affected during a stand-still period. The
schedule has been drawn up in such a way that
several operations can be carried out
sumultaneously, which results in reduced
maintenance costs.
MAINTENANCE SCHEDULE
Number of
operating
hours
100
1
) 2500
2
)
5000
7500
2
)
10,000 10,100 12,500
2
)
15,000
17,500
2
)
20,000 etc.
Maintenance
Cleaning of oil suction filter and
renewal of oil discharge filter
(ref. to par. 9.6).
$$
Major inspection to be carried
out by installation engineer
$$
Major inspection to be carried
out by installation engineer
Cleaning of suction gas strainer
(ref. to par. 9.7).
$$
$
$
Inspection of suction and discharge
valves
(ref. to par. 9.8)
$$
Draining and change of oil
3)
(ref. to par. 9.5).
$$ $ $
1
) time dependent on pollution.
2
) Only for NH
3
-compressors
3
) In the case of a possible rapid pollution of the oil, it should be drained and renewed sooner than at the times given
Refrigeration Division
Grasso
B: INSPECTION, MAINTENANCE
AND TROUBLE SHOOTING
v001.99.01.en Installation and Maintenance Manual RC(U)6 B1.3
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