Technical Information
Troubleshooting
5
MS40+ Single Stage Rotary Vane Pumps User Manual / 87-901-008-01 (
H.00
)
94/104
Troubleshooting
Tab. 12
ERROR
CODE
FAIL
MEANING
POSSIBLE
CAUSES
ACTIONS
1
Overcurrent
Required current
from the motor over
the current limit.
Reversed inlet
and outlet
connections.
Check that pump inlet port is
connected to the instrument and that
pump exhaust is connected to the
exhaust line.
2
Internal
undervoltage
Voltage level
under the lower
limit with the
pump in a running
status.
Malfunction of
control unit or
electrical motor
part (intermittent
failure due to
resistor
degradation).
Reset the error and restart the pump
monitoring it.
Voltage drop
caused by a not
proper power
supply.
With pump in a running status, check
that the mains supply is between 200-
240 V and there are not voltage drops.
4
Controller
overtemp
Temperature
sensor inside the
controller unit over
the temperature
limit
Occluded
controller grids.
Check if the controller grids are
plugged by external elements (sheets
of paper, foam of the packaging, dust,
etc.) and unplug them.
Ambient
temperature over
the limit (see the
limits below).
Check ambient temperature.
Not enough free
space around
the pump for
correct air
circulation.
Check that the pump has enough free
space to allow air circulation and that
is not inside a closed box.
8
Verify supply
line
Switching on the
pump, the voltage
level is not valid.
Used to detect that
the mains supply is
at 220 V and not at
110 V or 380 V.
Wrong mains
supply.
Before switching on the pump, check
that the main supply is between
200-240 V.
High distortion
on mains
voltage.
Before switching on the pump, check that
the main supply has no fluctuations outside
the operative voltage range 200-240 V.
