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Technical Information
Troubleshooting
5
MS40+ Single Stage Rotary Vane Pumps User Manual / 87-901-008-01 ( H.00 ) 95/104
ERROR
CODE
FAIL MEANING POSSIBLE
CAUSES
ACTIONS
16 Motor
overtemp
Temperature
sensor inside the
motor unit over
the temperature
limit.
Occluded motor
and pump grids.
Check if the grids are plugged by
external elements (sheets of paper,
foam of the packaging, dust, etc.) and
unplug them.
Ambient
temperature
over the limit.
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.
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.
32 Supply
undervoltage
or
overvoltage
With the pump in
stop or in a running
status, the voltage
level is out of the
valid voltage range.
Voltage drop or
overvoltage
caused by a not
proper power
supply.
With pump in a running status, check
that the mains supply is in the range
200-240 V and there are not voltage
drops and over voltages.
64 Short circuit Required current
from the motor over
the current limit or
short circuit.
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.
128 Rotor
blocked
The pump rotor is
not able to start
rotating
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.
Pump without oil Check if there is oil inside the oil tank.
Unknown Remove the fan cover and manually
rotate the plastic fan.