EBARA Ego Series, Operating And Maintenance Manual, Page: 29 / 116

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Constant pressure
In this mode the pump maintains the currently set pressure constant (Hset), regardless from the demand of the system
(from 0 flow to maximum power, at which point the pressure begins to drop). In “constant pressure” mode, only the
pressure (Hset) that the pump will maintain constant can be set. The remaining parameters can only be scrolled through.
Velocità costante
ln this mode the pump maintains the currently set speed constant (RPMset). lt is H therefore possible to set only the
speed that the pump will maintain constant; the remaining parameters can only be scrolled through.
Combined mode
Multiple limits can be set only over the web interface. None of the other modes are on.
During normal operation, only one pump is active, while the other is in standby. Pumps change duty once per day. Every
pump operates according to its own settings, so parameter changes should be made on both pumps. lf any pump detects
an error or loss of communication, the standby pump will start in less than 15 seconds.
lf pump failure occurs, the error causing the failure will appear in the display screen.
Errors on the screen are identified as:
The service code (V) is intended for service personal.
lf the pump is unresponsive, disconnect and connect it back to the electrical grid.
5.2.1 TWlN PUMP OPERATlON
6 ERROR AND TROUBLESHOOTING
Error group
(X)
Error Possible cause and solution
1 Low load detected
There is no medium in the pump.
Check if there is medium in the system.
2 Motor overload
Excessive current load or blocked rotor. lf the issue persists, check if the
rotor is spinning freely.
3 Motor too hot
Motor has exceeded allowed temperature and is now stopped to cool down.
Once cooled, it will automatically restart.
4 Electronics error
An electronics error was detected. The pump can still operate, but needs
servicing.
5 Motor/stator failure
Motor winding may be damaged.
Pump needs servicing.
E Y X
Error group
Error marking
Error marking