Grundfos Multilift MD, Installation And Operating Instructions Manual

Page: 14 / 704

English (GB)
14
Values in the form of
digits
In automatic mode, faults are indicated by means of a code, and in normal operation these two
values are shown:
• the liquid level in the tank, if the pump is not running
• the current consumption, if the pump is running. If both pumps are running, the current
consumption shown is the value for both pumps.
In the information menu, the following information is indicated:
• fault codes
• operating hours
• impulses
• max. measured motor current.
In the setup menu, the following information is indicated:
• set start level
• set delays
• set currents
• sensor calibration (presettings for piezoresistive level sensor)
• service intervals
• total reset to factory settings.
Pump operation and
pump fault in pump 1 The symbol is visible when pump 1 is running and flashes when pump 1 has a fault. In case of
fault, it can be combined with other symbols or fault codes in the display.
Pump operation and
pump fault in pump 2 The symbol is visible when pump 2 is running and flashes when pump 2 has a fault. In case of
fault, it can be combined with other symbols or fault codes in the display.
Phase-sequence fault
(Only three-phase pumps)
The symbol flashes in case of a phase-sequence fault and missing phase.
See section
6.4 Description of fault indications .
Thermal-switch failure
The symbol is visible if the motor temperature exceeds the permissible value and the thermal
switch cuts out the pump.
High-water alarm The symbol is visible if the liquid level in the tank reaches max. level.
Liquid level The symbol is visible when the current liquid level is indicated in the middle of the display.
Symbol Function Description