Idiomas disponibles
Idiomas disponibles
7. CHECK THE DIRECTION OF ROTATION (FOR THREE-PHASE MOTORS)
Fig.6
If it is not possible to carry out the above because the pump is already installed, check as follows:
1. Start the pump and observe the water flow rate.
2. Stop the pump, turn off the power and invert two phases of the supply line.
3. Restart the pump and observe the water flow rate again.
4. Stop the pump.
The correct direction of rotation will be the one corresponding to the LOWEST flow rate and power consumption!
8. START-UP
Models with a float switch are automatically put into operation when the water level rises; models without a float switch are put into
operation via a switch upstream from the socket (not supplied).
9. PRECAUTIONS
• The suction filter must always be present during pump operation.
• The pump must not undergo more than 20 starts/hour so as not to subject the motor to excessive thermal stress.
• RISK OF FROST: when the pump remains inactive at a temperature lower than 0°C, it is necessary to ensure that there is no
water residue which could freeze, causing cracks in the pump components.
• If the pump has been used with substances that tend to form a deposit, rinse it after use with a powerful jet of water in order to
avoid the formation of deposits or encrustations which would reduce the characteristics of the pump.
For power supply cables without a plug, provide a device for
disconnection from the supply network (e.g. thermal magnetic
circuit breaker) with contact opening distance of at least 3 mm for
each pole.
10. MAINTENANCE AND CLEANING
In normal operation the pump does not require any type of maintenance (except for checking the seal oil), thanks to the
oil-lubricated mechanical seal in the oil chamber and the lubricated-for-life bearings. The pump may not be dismantled
except by skilled and qualified personnel, in possession of the qualifications required by the specific regulations on the
subject. In any case, all repair and maintenance work must be carried out only after having disconnected the pump from
the supply mains.
During disassembly, great care must be taken with sharp objects that can cause injury.
The direction of rotation must be checked each time a new installation is
carried out.
Proceed as follows (Fig.6):
1. Place the pump on a flat surface.
2. Start the pump and stop it immediately.
3. Carefully observe the kickback on starting, looking at the pump from the
motor side. The direction of rotation is correct, that is clockwise, if the protective
cap moves as in the drawing (counter-clockwise).
8.1.
By lengthening or shortening the section of cable between the float switch and
the stop point (slot in the handle - Fig.7), the START and/or STOP level of the
pump is adjusted.
Ensure that the float can move freely.
Minimum stopping level 360 mm from the bottom.
Fig.7
ENGLISH
Adjusting the float switch
10
