BTS MTZ-P Serie Manual Del Usuario página 33

8. POSSIBLE FAULTS AND SOLUTIONS
Types of possible malfunctions and ways to eliminate them are indicated in Table 1.
Table 1
No. Malfunction
The pump does not pump water
or his
1
performance
too small
Gear housing
2
excessively
heats up
Inadequate
3
pressure
Water leakage through
mechanical seal
4
excessive
5
vibration at
work
Cause of malfunction
Presence of air in the pumped liquid
Leaky pipe connections or faulty
non-return valve in the suction
line
Pipeline blockage
There is no oil in the gearbox. The
pump is running too fast.
The propeller shaft has too large
an installation angle
Presence of air in the pumped liquid
Leaky pipe connections or faulty
non-return valve in the suction
line
Pipeline blockage
Dry running of the pump (short-term
or long-term operation without water)
Seal damage due to ingress of
foreign objects
bearing wear,
gear
10
Remedy
Increase the liquid head in the suction
pipeline when working under the bay.
Reduce the length of the suction line when
drawing liquid from the tank.
Increase the diameter of the suction
pipe.
Clean valve, filter, pipeline
Add oil.
Reduce speed to nominal Correct the
position of the cardan shaft
See point 1, in addition - Check the
correct operation of the
instrumentation. Check whether the
design scheme of the pipeline
corresponds to the real one.
Check the condition of the pipeline and
fittings.
Increase the pipe diameters if necessary.
Replace the mechanical seal Clean
the pump chamber
Replace bearings, gears