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EL7.5 - EL12.5 (S - SS) User manual - ENG 27/70
4.2 Starting
Starting the pump, perform the following instructions:
- place the pump completely submersed in the clean water without touching solid
material;
- start the pump and wait that a complete flow of clean water exits from the
discharge line;
- if any priming problems should come up, stop the pump and wait for about 30
seconds, leaving it immersed, until all the air has been eliminated then restart and
check the clean water flow;
- slowly lower the pump until it’s in contact with the material and the mixture
water/solids flow exits from the discharge line.
4.3 Working
During working, the operator must perform the following instructions:
- keep on to maintain the contact with the material, moving down the pump with
care;
- avoid to push hard the pump into the material;
- don’t dredge in the same place for a long period, avoiding to create an hole in the
material where the pump might get stuck;
- check the percentage of solid in order not to go over the maximum absorption
limit (see pump plate);
- check the current absorption value in order to understand the working load of the
pump.
4.4 Stopping
Before stopping the pump, it is always a good practice to lift the pump from the material
and pump only clean water in order to wash the pipes and prevent sedimentation and
piping clogging.
4.5 Emergency situation
The correct use of the machine excludes the possibility of emergencies happening during
operation or during cleaning and maintenance, unless the latter have not been done in
compliance with this instructions manual.
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