11
English
ware, a gate and MR-Lift devices. The controlling
software can be operated from any computer
connected to the Internet.
If there is no signal between MR-Lft and the
central unit, MR-Lift enters automatic operation
mode independent from the wireless system and
the following recurring message appears on the
display: “No radio communication”. The time du
-
ration after which the device enters the automat-
ic operation mode can be set in the menu.
If the MR-Lift device is locked by the system
administrator, the message “Blocked by
administrator” flashes on the display. Unlocking
can only be done by radio. During the lock, the
pump can not be started from the panel.
NOTE!
The sim card used in the gateway must be
configured in such a way that no PIN code is
required. In order to configure the sim card cor
-
rectly, please insert it into a mobile phone, go
to security settings in the mobile phone menu
and disable prompting for PIN code. The card is
now ready to be inserted into the gateway.
3. Troubleshooting
Displayed
message
Additional
information
Cause
Solution
High level
• Signal of
failure
• High level
relay turned
on
• Automatic
deletion of
the state of
failure after
the liquid
level falls
Level of
liquid in
the tank
exceeded
value set in
menu.
Check if the
device works
in automatic
mode or if
the pump is
not turned
off as a
result of over
temperature,
overcurrent
or a dry
run. After
all, check if
the delivery
pipeline is
clogged.
Float switch
High level
• Signal of
failure
• High level
relay turned
on
• Automatic
deletion of
the state of
failure after
the liquid
level falls
Level of
liquid in the
tank caused
switching
on the high
level float.
If the float
switch
has been
connected
as additional
protection to
the standard
control sys-
tem, check if
the message
“High level”
is displayed
at the same
time. If
not, check
how high
the float
is hung in
the tank. In
other cases
proceed as in
the case of
“High level”
status.
Float
switches
Wrong se-
quence
• Signal of
failure
• State of
failure saved
Float
switches
work in
the wrong
sequence.
Check float
connection,
then check
how high
they are
hung in the
tank and if
they are tan-
gled. Check
if they are
not dam-
aged and if
they switch
on correctly.
Delete fail-
ure with the
“OK”
key.
Sensor
4-20mA
disconnect-
ed
• Signal of
failure
• Automatic
deletion of
the state of
failure after
the sensor is
connected
External
sensor cur-
rent is lower
than 3mA.
Check ex
-
ternal sensor
and its
connecting
wire.
Overcurrent • A message
displayed
• The pump
works
Pump cur-
rent is higher
than the
value set for
“Maximum
current”.
Turn off the
pump, check
the value of
“Maximum
current” and
look for the
cause of the
overcurrent.
