FRANCO KF53, Manual

Page: 21 / 52

21 KF_U210700
EN
6.3 INSTALLATION OF THE CIRCULATOR
The air circulator can be installed with chains (not included)
using eyebolts included or different frames (not included).
The maximum deflection recommended is 12° from the vertical
position. Do not install the air circulator more inclined.
NOTE
The vertical support to fix the circulator to in an elevated position
must have suitable resistance and stability characteristics to
support the weight and vibrations induced of the circulator.
The determination of the characteristics of the support is delegated
to the installer and only the latter can assess their suitability.
It is forbidden to install the circulator on movable supports, such
as doors or shutters, with strength and rigidity, not fit for purpose.
In no event shall FRANCO S.R.L. be held responsible for
damage to property and/or persons caused by installation of
one or more circulators on unsuitable supports.
6.4 ELECTRICAL CONNECTION
WARNING
The power supply connection must be made by trained qualified
personnel in compliance with safety regulations currently in
force in the country in which the equipment is being installed.
Before attempting to connect to the mains supply, power down
the power supply line by opening the main switch.
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in
order to avoid a hazard. In case it is necessary to replace the
cord please follow the connections shown in the wiring diagram
in the end part of this manual.
1. The fan is supplied with no electrical actuating and control devices.
2. The label placed under the motor cable outlet indicates the type
of supply voltage for which the motor has been configured.
3. Check that the power supply available at the installation location,
correctly provides the required voltage and frequency values.
4. The installer must provide a control panel that complies with
the requirements of International Electrotechnical Commission
standard IEC 61439 and proper wiring that complies with IEC
60204 and IEC 60364.
5. The following power system protection devices must be installed:
•
Safety lockable isolating switch
•
A Miniature Circuit Breaker (MCB) (correctly-sized referring to the
motor nameplate data) and a possible Residual Current Device
(RCD) (to be assessed depending on the system configuration).
•
A start/stop switch
•
An emergency stop button with mechanical lock and manual reset.
6. It is necessary to correctly size the cables in relation to the motor
nameplate data, their length and to the installation conditions.
7. The machine shall be properly connected to Earth via a dedicated
yellow/green cable in such a way as to create an equipotential
bonding circuit that is effective against the risk of electrocution. The
choice of whether to install an RCD which will intervene if there is a
discharge to earth is left to the installer (reference standard IEC 64-8).
6.5 SPEED ADJUSTMENT
(Only for 3-phase type motors)
The fan motor speed can be controlled by means of suitable
frequency converters.
If frequency converters are used, in order to ensure that the machinery
complies with Electromagnetic compatibility (EMC) requirements
replace the cable and the cable gland supplied with shielded
symmetrical cables and EMC cable glands (i.e. cable glands providing
360 ° bonding between the cable shield and the motor housing).
You also need:
•
to use shielded symmetrical cables and EMC glands along the
entire line between the frequency converter and the machine,
for example on the converter, possible junction boxes, safety
switches, motor etc...;
•
do not exceed the motor/propeller rotation speed indicated in
the technical data table;
•
set the converter so that the speed can be regulated within
the two limits:
- maximum speed - indicated in the technical data table;
- minimum speed - greater than or equal to 50% of the rated speed.
•
the design and sizing of the electrical system are delegated to
the installer or to a deputy; all work must comply with the rules
in force in the destination country.
•
Comply with the provisions laid down in the frequency
converter manufacturer’s installation manual.
6.6 INITIAL START-UP
Before starting the fan:
•
make sure you have not left any object or tool inside the machine;
•
ensure that cement or lime residues have not been deposited
on the blades during installation work; the resulting fan
imbalance would cause to harmful vibrations causing rapid
wear of the propeller bearing;
• ensure that the wire mesh safety guards are securely fitted to
the machine;
• ensure that staff keep a safe distance (at least 30 metres) from
the machine.
•
check that the electrical protection and safety devices are
operating correctly.
Once the fan has been started:
•
verify that it has been correctly installed checking to see that there is
no unusual vibration and/or noises. if there any of these are present
then switch off the machine, identify the problem and rectify it;
•
check that the fan rotation direction is anticlockwise when
viewed from the fan air inlet side; if the rotation direction is
clockwise and hence erroneous then invert the two wires in the
power line (three-phase motors).