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810
Users Manual
4-34
Severity Scale
The scale is an indication of severity for any particular
fault machine condition.
Slight Moderate Serious Extreme
gbk13.eps
Note
The severity scale should not be associated with
time to failure.
The severity scale is based on the intensity of the
machine fault at the time of measurement. It is not an
indicator of time to machine failure. As conditions change,
the severity may change, even appear to improve (for
example, immediately after lubrication). However, over
time, conditions will worsen with normal machine wear
and tear.
Note
Time to failure will vary depending on the
equipment type, age, machine load,
environmental conditions, and other variables.
Follow these recommended actions for each severity
level to avoid failure. In general, the scale may be
interpreted as:
• Slight No repair action is recommended.
Monitor the machine and retest after
regular machine planned maintenance
to verify maintenance was performed
correctly.
• Moderate (Months, even up to a year) – Repair
action may be needed in the future. A
machine failure is possible, so plan
accordingly. Increase the frequency of
vibration testing on this equipment and
review spare parts availability.
• Serious (Weeks) – Repair action may be
needed before the next planned
downtime. There may be other physical
evidence of the fault in terms of noise
or higher bearing temperatures. Retest
the machine within a short period to
confirm finds. Limit the run time of the
machine, if possible, and determine a
fault progression trend to prevent
additional component failure.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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