Teral ALF-UII, Инструкция по эксплуатации

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3.4 Installation
Caution
Ask a specialist company to install the fan in consideration of the
center of gravity and weight.
(1) After confirming the direction of the flow, horizontally install the fan onto the hang bolts
mounted in the ceiling. Ensure that the load of the unit is evenly distributed among all the
bolts.
(2) The hang bolts and their mounting condition must be strong enough to sustain the load.
(3) After installation, install a locknut to each hang bolt to prevent them from loosening.
(4) Do not install the fan in a vertical position in which the air intake is faced upward.
Double nut
3.5 Precautions for connecting the ducts
Warning
Ensure to prevent any load of the ducts from acting on the fan.
Failure to observe this may cause a failure, damage, and/or vibration.
(1) In order to prevent transmission of vibration and noise to the outside, connect the fan’s
flange and the duct using an expansion joint.
(2) Before connecting the ducts, check inside the ducts and fan, and remove any foreign matter,
such as waste cloth and tools.
Warning
Be sure to install a protective wire mesh on any open air intakes of the fan.
(3) To prevent foreign matter from being sucked into each place, install a protective wire mesh
to the duct inlet or the air intake of fan where air is sucked directly. If dust or water is
expected to get inside the fan, install a filter to protect against it.
(4) If an inactive (not running) fan is exposed to air in the reverse direction, it rotates in reverse.
Avoid exposure to such air because it takes longer to start a fan that is rotating in reverse.
(5) In general, unexpected pressure loss may occur due to the connection to (a) ducts that are
much smaller than the port diameter of the fan, (b) ducts with a series of bends, or (c) ducts
with bends just before or after the connection to the fan.
Provide the duct connected to the suction side with a straight section (that is more than twice
as long as the inlet diameter) so that turbulence of the airflow would not degrade the
performance or cause noise.
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