KSB Magnochem-Bloc, Installation & Operating Manual

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8 Trouble-shooting
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Magnochem-Bloc
A B C D E F Possible causes Remedy
10)
-
✘ ✘
- - - Speed is too high. Reduce speed (turbine, I.C. engine).
11)12)
✘ - - - ✘ - Wear of internal components Replace worn components by new ones.
- - - ✘ - - Use of unsuitable materials Change the material combination.
- - - ✘ - - Connection bolts and screw plugs have
loosened.
Re-tighten.
Fit new sealing elements.
- - - - - ✘ Lack of cooling liquid or dirty cooling chamber Increase cooling liquid quantity.
Clean out cooling chamber.
Purify/clean cooling liquid.
- - - ✘ - - Dismantle to find out. Repair necessary.
- ✘ - - ✘ - Pump is warped or sympathetic vibrations in
the piping.
Check the piping connections and secure fixing
of pump; if required, reduce distances
between the pipe clamps.Fix the pipelines
using anti-vibration material.
- - - - - ✘ Insufficient or excessive quantity of lubricant
or unsuitable lubricant Top up, reduce or change lubricant.
✘ ✘ - - - - Motor is running on two phases only. Replace the defective fuse.
Check the electric cable connections.
- ✘ - - - - Operating voltage is too low. Increase voltage; check voltage drop in the
power cable.
- - - -
✘
- Impeller is out of balance. Clean the impeller.
Re-balance the impeller.
- ✘ - - ✘ - Defective bearing(s) Replace.
- - - -
✘ ✘
Flow rate is too low. Increase the minimum flow rate.
✘
- - -
✘ ✘
Magnetic coupling has dropped out of
synchronisation with motor. Switch off the motor and re-start.
Check motor starting.
- - ✘ - - - System pressure is too high. Check system.
- - - ✘ - - Defective shroud Repair necessary.
- - - -
✘
- Magnetic coupling out of balance (inner and
outer rotor)
Check balancing.
- - - - - ✘ Cooling circuit of magnetic coupling
interrupted Repair necessary.
12) The fault can also be remedied by changing the impeller diameter.