IOM/DSMT/001/01 Issue Date: 13/10/2000
Page : Page 7/12 Last Revision Date:
5. MAINTENANCE:
Preventive maintenance schedule is the periodical checks and precautions by which
possibilities of 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 and Assembling procedure
All DSM pumps are similar in construction (except some minor changes in the parts).
Please refer to the cross sectional drawings and spare parts list given in this booklet
while dismantling and dismantling.
6.2 Dismantling
6.2.1 Uncouple the pump from the prime mover by removing coupling bolts, nuts and
rubber bushes.
6.2.2 Remove –
- Sealing Connections
- Air vent
- Grease nipples and other fittings.
6.2.3 Remove all the bolts and nuts (572, 581) holding the upper half casing and
lower half casing. Take out upper half casing (122) slowly by tightening the release
bolts and after removing taper pins.
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