5 Preventive Maintenance
5.1 General Comments
A routine maintenance program can extend the life of your pump. Well maintained equipment will last
longer and require fewer repairs. You should keep maintenance records, this will help pinpoint poten-
tial causes of problems.
WARNUNG:
The preventive maintenance section must be adhered to in order to keep the applicable
ATEX classification of the equipment. Failure to follow these procedures will void the ATEX
classification for the equipment.
5.2 Maintenance Schedule
5.2.1 Routine Maintenance
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Bearing lubrication
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Seal monitoring
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Vibration analysis
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Discharge pressure
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Temperature monitoring
5.2.2 Routine Inspections
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Check level and condition of oil through sight glass on bearing frame.
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Check for unusual noise, vibration and bearing temperatures.
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Inspect pump and piping for leaks.
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Check seal chamber/stuffing box leakage. Mechanical Seal: Should be no leakage.
Packing: Excessive leakage requires adjust- ment or possible packing replacement. Refer to
5.2.3 3 Month Inspections
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Check the foundation and the hold-down bolts for tightness.
•
If the pump has been left idle, check the packing.Replace if required.
•
Oil should be changed at least every 3 months (2000 hours) or more often if there are any ad-
verse atmospheric conditions or other conditions which might contaminate or break down the
oil. If it is cloudy or contaminated as seen by inspection through the sight glass, it should be
changed immediately.
•
Check the shaft alignment. Realign if required.
5.2.4 Annual Inspections
•
Check the pump capacity, pressure and power. If pump performance does not satisfy your pro-
cess requirements, and the process requirements have not changed, the pump should be di-
sassembled, inspected, and worn parts should be replaced. Otherwise, a system inspection
should be done.
5.2.5 Inspection Intervals
Inspection intervals should be shortened appropriately if the pumpage is abrasive and/or corrosive,
5 Preventive Maintenance
3996 Installation, Operation and Maintenance Instructions
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