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 alignment of the pumpset.
5.2.3 Calibrate the measuring instruments.
5.2.4 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 for gland packed pumps.
6.1.1 Drain the pump by opening air vent valve & drain plugs.
6.1.2 Remove all the screws of bearing cap (274) tightened with lowers half casing.
6.1.3 Remove all the nuts and bolts (577, 581) and locating pin (611) of the upper and
lower casing flange.
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 Lift the rotating unit out of the lower half casing.
6.1.6 Remove all the screws of bearing cartridge (241,253) tightened with casing &
bearing cover (271) and dismantle the bearing cartridge.
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