Appendix F
72
Hydraulic System Target Cleanliness Levels
Hydraulic System Target Cleanliness Levels
Where a hydraulic system user has been able to check cleanliness levels over a
considerable period, the acceptability, or otherwise, of those levels can be verified.
Thus if no failures have occurred, the average level measured may well be one
which could be made a bench mark. However, such a level may have to be modified
if the conditions change, or if specific contaminant-sensitive components are added
to the system. The demand for greater reliability may also necessitate an improved
cleanliness level.
The level of acceptability depends on three features:
•
the contamination sensitivity of the components
•
the operational conditions of the system
•
the required reliability and life expectancy
Summary of Contents for ICM
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