Product Manual

Page 5 of 7
a distance of 3 feet from the electric pump.
MECHANICAL RISKS
Mechanical parts subject to wear and tear
Parts such as blades, bearings, rotors, etc. should be replaced with original spare parts by qualified personal
only or in authorized service centers.
Risks due to extreme temperatures
Make sure the pump works at the ambient temperature ranging from -4°F (-20°C) to 113°F (45°C).
Remember that operating at a very low temperature (about -4°F/ -20°C) can freeze the oil inside the pump.
This situation can cause serious damage to the motor pump unit.
A very high temperature (above 113°F) may cause the plastic parts in the unit to expand. The unit should be
placed in a well-ventilated place and protected against the sun.
TROUBLE SHOOTING
Problem
Possible Cause
Corrective Action
Lack of electric power
Check the electrical connections
and the safety systems
Rotor jams
Check for possible damage or
obstruction of the rotating
components.
The motor is not turning
Motor problems
Contact with the service
department
Low level in the suction tank
Refill the tank
Filter clogged
Clean the filter
Excessive suction pressure
Lower the pump with respect to the
level
High loss of head in the circuit
(working with the bypass open)
Use shorter tubing or of greater
diameter
Bypass valve blocked
Dismantle the valve, clean and/or
replace it
Air entering the pump or the suction
tubing
Check the seals of the connections
A narrowing in the suction tubing
Use tubing suitable for working
under suction pressure
Low rotation speed
Check the voltage at the pump.
Adjust the voltage and/or use
cables of greater cross-section
Low or no flow rate
The suction tubing is resting on the
bottom of the tank
Raise the tubing
Cavitation (bubbles) occurring
Reduce suction pressure
Irregular functioning of the bypass
Dispense until the air is purged
from the circuit
Increased pump noise
Air present in the diesel fuel
Verify the suction connections
Leakage from the pump body
Seal damaged
Check and replace the mechanical
seal