DRENO Compatta PRO-Serie Gebrauchs- Und Wartungsanleitung Seite 35

If the user detects the electropump starts and stops too frequently it is extremely
important to check the reason, that it could due to an incorrect use. Stop and re-start the
pump, if the above condition continues, it is necessary to address to a Service Centre or
put in touch directly with one of our skilled persons Dreno Pompe.
If the electropump works, but the low rate is poor or non-existent, one of the following
cases could be happened:
• The direction of rotation of the pump is not correct (three-phase motors only);
• Check the wearing condition of the hydraulic part;
• The pumps is working inside an air pocket (stop the electropump and start it after a few
minutes, paying attention to carry out the hydraulic plant breathing);
• The delivery piping is clogged, the check ball-valves and/or gate valves are partly
closed;
• The pump works on and of;
• Check if one of the following conditions ar e present;
• Too hot liquid (higher than 40°C);
• Too cold liquid (lower than 0°C);
• The voltage supply is higher compar ed to the required limits (+/- 5%);
• The impeller/blades is clogged by an obstruction which pr event the right rotation;
• It is suggested to contact the Service Centre in case the pump continues to not work
properly.
If the pump stops suddenly, one of the following cases could be happened:
• Ball bearing failur e ;
• Burnout or winding discharge, it results fault;
• An high power supply overload;
• If the reason is due to an overload, the installer could supply a right power supply, otherwise
contact qualiies Service Centre.
If the pump stops suddenly, one of the following cases could be happened:
• Ball bearing failur e ;
• Burnout or winding discharge, it results fault;
• An high power supply overload;
• If the reason is due to an overload, the installer could supply a right power supply, otherwise
contact qualiies Service Centre.
IN ALL CASES OF DOUBT, IT IS ALWAYS ADVISABLE TO CONTACT A QUALIFIED
DRENO POMPE ENGINEER (*) OR CONTACT WITH A REPRESENTATIVE OF
POMPE IN POLAND AT +48 22 632 86 09 OR BY SENDING AN EMAIL TO:
(*) a qualiied person is a certiied Dreno Pompe Engineer.
SERWIS@DAMBAT.PL
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