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(Drainage issues)
Issues
The level in the tank has raised up
to the float switch alarm.
The maximum level alarm start
ringing.
(MAX LEVEL)
The float switches did not activate
in the right sequence or a float
switch is broken
(LEVEL ERROR)
The motor protector has activated.
(only if the parameter AP05 is set
to "external")
MOTORPROTECTOR
(Pressure mode issues)
Issues
The pressure was lower than the
UP17
MINIMUM
PRESSURE
ALARM for more than 12 seconds.
(MINIMUM PRESSURE)
Low air in the vessel. (This alarm
does not stop the pump).
(available only if the parameter
UP10 AIR ALARM TIME has set a
time) (AIR ALARM TIME)
The time between a start and a
stop is lower than the parameter
UP10 AIR ALARM TIME, due to
low air in the vessel.
(NO AIR IN TANK)
(available only if the parameter
UP10 is set on a time)
No water in suction
(NO WATER)
M004_REV06_ - Operating Instructions
Probable cause
The pump is blocked
Wrong plant design and
calculations
The float switches are
connected in the wrong
sequence.
The float switch is broken
The float switches are
connected in the wrong
sequence.
The float switch is broken
The pump is blocked
The direction of rotation
is wrong. (only for three-
phase pumps)
The pump works out of
curve
Probable cause
The pump is not primed
There is no water in the
well or in the suction tank.
The pump is faulty
The pre-charge pressure
of the vessel is wrong.
The pre-charge pressure
of the vessel is wrong.
There's no water in the
well or the suction tank
The float switch is blocked
or broken
Plant condition
FIRST START
EXISTING PLANT
FIRST START
FIRST START
FIRST START
EXISTING PLANT
FIRST START
FIRST START
EXISTING PLANT
FIRST START
EXISTING PLANT
FIRST START
FIRST START
Plant condition
FIRST START
EXISTING PLANT
FIRST START
EXISTING PLANT
EXISTING PLANT
FIRST START
EXISTING PLANT
FIRST START
EXISTING PLANT
FIRST START
EXISTING PLANT
EXISTING PLANT
Possible solutions
Check the instruction
manual of the pump.
Contact
the
manufacturer
Reconnect
the
float
switches in the right
sequence.
Change the float switch.
Reconnect
the
float
switches in the right
sequence.
Change the float switch.
Check the instruction
manual of the pump.
Change the direction
of rotation (see chapter
7.4)
Make the pump work
within its curve.
Possible solutions
Fill
the
pump
as
described
in
the
instruction manual of
the pump.
Check the well or the
suction tank.
Contact
the
manufacturer
Fill up the vessel as
described in the booster
set instruction manual.
Fill up the vessel as
described in the booster
set instruction manual.
Check the well or the
suction tank.
Change the float switch.
Page 31 / 92
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