DGFLOW DGFIT T/T 06 Manual De Uso Y Mantenimiento página 53

HIGH Deviation of the supply voltage
VOLTAGE higher than +15% of the plate
voltage
OVER
internal overheating due to
TEMP BOX
overload or excessive ambient
temperature
OVER Module overheating due to
TEMP overload or excessive ambient
MODULE temperature
OVER
capacitors overheating due to
TEMP CAP
overload or excessive ambient
temperature
COM No communication between
ERROR control board and power board
LOW LEVEL No level signal with level signal
input on
EXT OFF Placing out of service by means of
external signal
P NC No pressure signal or out of scale
- Pressure sensor fault
PROBLEM Pump always running even when not required
Messaggio Causa
- System leaks greater then 2 l/min
- Flow sensor fault or locked open
- Minimum OFF FREQUENCY setting
too low
PROBLEM The pump stops too soon when requested
Messaggio Causa
- Minimum OFF FREQUENCY setting
too high
- Flow rate sensor fault
PROBLEM Low pump performances
Messaggio Causa
- Air inside suction manifold
- Pump blocked or damaged
Check the supply voltage
Make sure the air cooling channels are free and
that the fans are working, check the pump load
Make sure the air cooling channels are free and
that the fans are working, check the pump load
Make sure the air cooling channels are free and
that the fans are working, check the pump load
Check the integrity of the connection cable and
connections; the power board could be damaged
Make sure there is water at suction or check
level signal operation
Check the external signal
Check the pressure sensor connections or replace
the sensor
Check the display pressure with a reference
manometer, re-calibrate or substitute the
pressure sensor
intervento
Identify the leaks and repair
Inspect and check the flow sensor
Set a higher minimum frequency
intervento
Set a lower minimum frequency
Check the flow rate sensor
intervento
Bleed the suction system
Inspect the pump and eliminate the problem
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