
EN
5.4 - Electrical connection of the pump
Single-phase asynchronous
motors
To connect or replace the power cable, locate the pump, open the capacitor box cover and
follow the connection diagram to the side. Single-phase asynchronous motors are equipped
with phase capacitor and double-pole switch. The capacitor specifications are indicated for
each model on the pump’s rating plate.
Brushed motors
To connect or replace the power cable, locate the pump and remove the casings. Brushed
motors can be single-phase, 12 V DC or 24 V DC.
For DC versions, follow the polarity when connecting: RED = VCC (+, switch side), BLACK =
GND (-, motor side).For single-phase versions, connect following the colours: BROWN = L
(phase, switch side), BLACK = N (neutral, motor side), YELLOW-GREEN = earth cable to be
screwed to the back cover.
For proper installation and electrical maintenance of the system, please follow these instructions:
- make sure the power lines are not live when installing or carrying out maintenance operations on the system
- use cables with minimum section, rated voltages and type of installation suitable for the system’s specications
- always connect the unit’s earth terminal to the electricity grid’s earth line.
- always keep the capacitor box closed and sealed before electrically powering the pump
CAUTION! The units are provided without safety devices such as fuses, motor protectors,
systems against accidental restart after a power failure. Even the switch, if any, will only start/
stop the pump and can in no way replace a suitable circuit breaker. It is therefore the direct
responsibility of the installer to connect the unit to the main electrical panel in compliance with
the regulations in force in the country of use.
6 - INTENDED USE
6.1 - Preliminary checks and start-up
After ensuring there is diesel fuel in the suction tank, that all pipes and components on the hydraulic line
are in good condition and properly sealed, and the nozzle is closed, the unit can be started.
After inserting the nozzle into the lling hole, switch the unit on, gradually release the nozzle lever and
start transferring the diesel fuel. When you have nished lling, close the nozzle and switch the pump off.
If you are using an automatic nozzle, it will automatically close as soon as you have nished lling.
WARNINGS! Never leave the lling position to prevent accidental diesel fuel spillage. Do
not start the pump before having connected the suction and discharge pipes. Do not start or
stop the unit by inserting or unplugging any plugs. Do not touch any switches with wet hands.
Avoid direct contact of the diesel fuel with skin or eyes as it may cause harm. Use of goggles
and gloves is recommended.The motors are not tted with motor protectors and systems
against accidental restart. In the event of a power failure, remember to switch the unit o
and unplug it before restoring it.Work cycles that are continuous or in extreme conditions for
the unit can cause the motor temperature to rise and its subsequent shutdown by the circuit
breaker. Switch the unit o and wait for it to cool down before resuming work. The circuit
breaker automatically switches o when the motor has cooled suciently.
CAUTION! During the rst priming phase, the pump must be able to discharge the air,
initially present in the suction pipe and in the pump, from the discharge line. To facilitate this
procedure, make sure the nozzle or the discharge outlet is kept open. If an automatic nozzle
is installed on the discharge line, it is recommended to temporarily disassemble the nozzle to
facilitate pump suction during rst start-up.