LDA STV series, User Manual

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USER MANUAL
8 AVERAGE TIME FOR REPAIRING , MTBF:
The event or average time for repairing curve shows that the failure
concentration is located at the beginning and at the end of this life-time curve.
For that reason, the average time for repairing could be calculated. This curve
could be modified due to changes in the environment, it is recommended to put
attention in the changes of external agents over the installation.
The same techniques and standards are used since the maximum level of
difficulty to the minimum level, it means to the last level of each components.
This complete study over the esteemed average time and life-time allows to
obtain a rate, which will be applied for the final product. The rate could be
calculated by different standardized equations for obtaining the esteemed life-
time, being this result modified to become in a real value. This real value is
conditioned by real working time of components and electrical and physics
stress under normal working.
The theoretical result is modified by real tests and corrections through out
a serious control of failures. All failures are controlled and registered for each
product in order to compare the precision of the calculated previsions. The
horizontal distribution allows to detect the failure in other equipments before the
failure appearance.
Next table stores different equipment models together with their
esteemed average time for repairing following the calculation described below:
CODE OF EQUIPMENT MTBF (years)
LDASTV2200S01 27,5
LDASTV4200S01 26,1
LDASTV2400S01 24,8
LDASTV4400S01 23,4
LDASTV2800S01 22,5
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