PROBLEMS AND SOLUTIONS
DAILY USE
• If using flexible tubing, attach the ends of the tubing to the tanks. In the absence of an
appropriate slot, solidly grasp the delivery tube before beginning dispensing.
• Before starting the pump make sure that the delivery valve is closed (dispensing nozzle or
line valve).
• Turn the ON/OFF switch to ON. The by-pass valve allows functioning with the delivery closed
for only brief periods.
• Open the delivery valve, solidly grasping the end of the tubing.
• Close the delivery valve to stop dispensing.
• When dispensing is finished, turn off the pump.
MAINTENANCE
Under normal working conditions the noise emission from all models does not exceed the value
of 80 db at a distance of 1 meter from the electric pump.
E3
TECHNICAL
DETAILS
SAFETY
PRECAUTIONS
OPERATION
EXPLODED AND
PARTS LIST
INSTALLATION
MAINTENANCE
LIMITED
WARRANTY
PROBLEMS AND
SOLUTIONS
Problem
The motor is not
turning
Low or no flow rate
Increased pump
noise
Leakage from the
pump body
Possible Cause
Lack of electric power
Rotor jams
Motor problems
Thermal overload protection shut
Low level in the suction tank
Foot valve blocked
Filter clogged
Excessive suction pressure
High loss of head in the circuit
(working with the by-pass open)
By-pass valve blocked
Air entering the pump or the
suction tubing
A narrowing in the suction Tubing
Low rotation speed
The suction tubing is resting on the
bottom of the tank
Cavitations occurring
Irregular functioning of the by-pass
Air present in the diesel fuel
Seal damaged
Corrective Action
Check the electrical connections and the safety systems
Check for possible damage or obstruction of the
rotating components.
Contact with the service department
Move ON/OFF lever to the “OFF” position to reset pump.
Refill the tank
Clean and/or replace the valve
Clean the filter
Lower the pump with respect to the Level
Use shorter tubing or of greater Diameter
Dismantle the valve, clean and/or replace it
Check the seals of the connections
Use tubing suitable for working under suction pressure
Check the voltage at the pump.
Adjust the voltage and/or use cables of greater
cross-section
Raise the tubing
Reduce suction pressure
Dispense until the air is purged from the circuit
Verify the suction connections
Check and replace the mechanical seal
