. TROUBLESHOOTING
The motor is
not turning
Lack of electric power
¦ Make sure the operating lever is in ON position
¦ Recock the external residual current circuit
breaker
¦ Check the electrical connections
Fuses burned out Change the fuses on the switchboard
Faulty switch on electrical cabinet
Renew switch
Motor problems
If the rotor is jammed, dismount and check
for damage and obstructions, then remount,
contact the Service Department
Motor
won’t start
with nozzle
closed
Electric voltage too low
Check that the voltage is not more than %
below the nominal voltage
Low or no
flow rate
Excessive suction pressure
Lower CUBE with respect to the tank or
increase the diameter of the tubing
High loss of head Use shorter tubing or of greater diameter
Suction pipe resting on the boom of
the tank
Raise the suction pipe
Low level in the suction tank Refill the tank
Air entering the suction pipe or in the
pump
Check the connections seal in the tubing and
the level of diesel fuel in the tank
Motor low rotation speed
Check the voltage at the motor: adjust the
voltage and/or use cables of greater cross-
section
Check valve blocked Clean or replace
Tank filter clogged Clean the filter
Pump filter clogged Clean the filter
Fluid leaking
Check the seals of the connections and the
condition of the rubber hoses
Meter chamber obstructed Clean the meter chamber
Meter is not
accurate
enough
Air in the suction line Check the seals of the connections
Measurement chamber fouled Clean flow meter measurement chamber
Problem Possible causes Possible solutions
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