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Pump

maintenance

12.1 The strategy

At one time, the ultimate goal for a pump repair was to bring the unit
back to the 'as new' standard of the original equipment manufacturer
(OEM). Combining this with a corporate strategy of pump repair, there
was a tendency to change out the part that failed and get the pump
back into service as quickly as possible. However, if we establish that
the current design is not able to meet all the various demands of the
system, then a simple repair is not sufficient, and an upgrade becomcs
necessary. When such is the case, the necessary time must be allocated
and scheduled for such work. If a failure has already taken place, and
production is down, it may be necessary to schedule the upgrade at
some time in the future and conduct a temporary repair immediately.
More enlightened companies operate with a strategy of Pump
Reliability where every pump downtime event becomes an opportunity
to upgrade the pump to a higher level of reliability. With this in mind, a
Pump Reliability strategy consists of continuous equipment monitor-
ing, detection of developing problems, in-depth diagnosis and
corrective action.
To conduct an effective upgrading of any pump, it is necessary to
ensure that all the information needed is available to the personnel
involved. This should include:
1. Access to all prior repair records.
2. The installation, operation and maintenance manual with data
sheet, bills of materials, the pump curve and the sectional
drawing.
3. Mechanical seal bill of materials and installation drawing.

4. All necessary repair fits and tolerances.

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