SystemAir K EC Instructions D'utilisation Et D'entretien page 28

GB
Safety Information
This machinery must not be put into operation prior to
reading mounting instructions and safety information.
All fans are intended for transportation of air in air
handling systems. If installed in non-heated rooms, fan
casing must be insulated in order to avoid
condensation. They are designed to be used once
built into machines or ducted to be used into machines
or duct systems or after contact protection grid has
been installed. (EN ISO 13857). Fans with duct
connections must be connected to ducts on both sides
(inlet/outlet). No moving parts shall be accessible after
installation. The fans are not to be used in hazardous
environments or connected to flue ducts. The fans
must not be installed outdoors (except TFSR/TFSK
EC, K EC ). Safety accessories (i.e. safety grille) may
not be dismounted, short cut or disconnected.
This appliance can be used by children aged from 8
years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe
way and understand the hazards involved. Children
shall not play with the appliance. Cleaning and user
maintenance shall not be made by children without
supervision.
CAUTION Before servicing or maintenance, switch off
power, (all-pole circuit breaker), and make sure the
impeller has come a standstill. CAUTION the fans can
have sharp edges and corners which may cause
injuries. CAUTION be careful when opening the fans
service-hatches (swing-out), the fan and motor
assembled on the hatch is relatively heavy (applies to
KVKE, KVO).
The fan motor has built in protection for locked rotor,
which implies that the motor tries to restart with a
preprogrammed interval whenever it senses that the
rotor is standing still. When the blockage is removed
the fan will start up by itself without any further
measures. At high motor temperatures the current will
be cut from the motor. It can then only be restarted by
manually disconnecting the mains supply to the fan for
couple of minutes.
Transportation and Storage
All fans are packaged at the factory to withstand
normal transport handling. When handling the goods
use suitable lifting equipment in order to avoid
damage to fans and personnel. Do not lift the fans by
the connecting cable, connection box, impeller or inlet
cone. Avoid blows and shock loads. Store the fans in
a dry place protected from weather and dirt until final
installation. Permissible storage temperatures -
40...+80°C
Installation
Refer to Safety information above. Installation,
electrical connection and commissioning are only to
be carried out by authorised personnel and in
accordance with requirements and demands.
Electrical connection according to the wiring diagram
Doument in original language
in the terminal box, markings on terminal blocks or on
cable. Seal any empty cable glands with dummy
plugs. The K-EC fan must be installed with the
connection box at the top of the unit ± 90 degrees. If
permanent installation is carried out using cables with
diameter 12-14 mm, the electrical gland must be
replaced (applies to type K-EC). Assemble the fan in
the direction of airflow (see arrow on unit). The fan
must be installed so that vibration is not transmitted
via ducted systems or building structure. (Suitable
accessories such as fast clamps and diffusers are
available). Make sure the assembly of the fan is firm
and stable. The fan can be mounted in any direction
unless stated otherwise. The fans must be assembled
so that service and maintenance can be performed
easily and safely. Disturbing noise can be avoided by
installing silencers (available accessory).
The fans are meant for continuous use within the
temperature range stated.
For fans which reset by cutting the current, must be
taken into consideration when connecting surrounding
equipment with automatic on/off function.
EC motors have a leakage current to earth
corresponding to <=3,5 mA. This needs to be
considered whenever the fan is connected together
with an earth fault breaker.
Integral potentiometer
The integral potentiometer is factory preset (Fig. 1-
16). This value can be changed manually to obtain a
different motor rpm/fan performance. Fan performance
charts for this purpose are shown in the table by
voltage steps on page 10-25 (Fig. 1-16) to the right of
the pot. symbols. An external potentiometer can be
connected if necessary. If so the internal
potentiometer needs to be disconnected from the
connection terminals.
Tach output
Terminal No. 1 in the wiring diagrams (white signal
cable) enables connection of an rpm counter (one
pulse per revolution), controller, alarm or a speed
display. The Tacho a signal with max 10mA.
Operation
Before initial operation, check the following:
- Electrical connection has been properly completed.
- Protective conductor has been connected.
- Safety devices in place (protection grid)
- Leftover installation materials and foreign materials
have been removed from the casing.
When putting into operation, check the following:
- Connection data corresponds to the specifications on
the nameplate: Maximum voltage +6%, -10%,
according to IEC 38. Rated current must not be
exceeded with more than 5% at rated voltage.
- Smoothness of motor operation, (no abnormal
noises).
- Fans must only be operated by a person who has
suitable knowledge or education within this field or
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