IOM/DSMT/0010/01 Issue Date: 13/10/2000
Page : Page 7/14 Last Revision Date:
5. MAINTENANCE:
Preventive maintenance schedule is the periodical checks and precautions by which
failures and breakdowns are made very remote.
5.1 Daily Checks
5.1.1 Pressure gauge reading.
5.1.2 Bearing temperature.
5.1.3 Leakage through stuffing box.
5.1.4 Noise and vibration.
5.1.5 Voltage and current.
5.2 Periodical Maintenance
5.2.1 Replenish the grease.
5.2.2 Check the stuffing box packing.
5.2.3 Check the alignment of the pumpset.
5.2.4 Calibrate the measuring instruments.
5.2.5 Check the sealing and cooling connections for leakage etc.
6. OVERHAULING:
With normal daily operating spell, the pump will be due for overhaul after about
5000 working hours. This work should be done by skilled personnel.
6.1 Dismantling Procedure
6.1.1 Drain the pump by opening air vent valve (450).
6.1.2 Remove all the nuts and bolts (572, 581)and locating pin (611) of the upper and
lower casing flange.
6.1.3 Loosen all the insert joint nuts (586) at both the ends.
6.1.4 Insert a screw driver or peg bar into the slot between the two halves and separate
two halves, lifting of the upper half casing
6.1.5 Tap the inserts (979.1 and 979.2) with a soft hammer to break the seat between
the insert and lower half casing and lift the rotating unit out of the lower half casing.
6.1.6 Remove four hex. nuts (586) from each bearing housing (240.1 and 240.2) and
remove the bearing housing from bearings.
6.1.7 Remove the bearing lock nut (335) and lock washer (415) from the NDE side of the
shaft and using by bearing puller. Remove the bearing (260) from the shaft. Remove
the driving end bearing in the same manner.
6.1.8 Remove the oil seals (500) from the insert. Remove shoulder rings (199) from the
shaft by using puller. Remove the liquid deflectors (236).
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