OSTBERG AC, Directions For Use Manual

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7
E N G L I S H
I N S T A L L A T I O N
• The fan must be installed according to the air direc-
tion label on the fan.
• The fan must be connected to duct or equipped
with a safety grille.
• The fan should be installed in a safe way and make
sure that no foreign objects are left behind.
• The fan should be installed in a way that makes ser-
vice and maintenance easy. N.B.! Consider the
weight and size of the fan.
• The fan should be installed in a way that vibrations
not can be transfused to duct or building. To provi-
de this, use for example a flange.
• Electrical installations must be made by an authori-
zed
electrician.
• See Wiring diagram at the lid of the junctio box.
• Electrical installation must be connected to
locally situated isolator switch or by a lockable main
switch.
• Control that the fan is installed and connected elec-
trically in the right way, grounded and with motor
protection.
• For single phase fans a residual current device i used
(type
A).
AC-MOTOR
• For speed regulation of AC motor a transformer or
thyristor can be connected.
• The AC motor has a built-in thermal contact.
• The capacitor (only for AC motor) has finite life-
time and should be exchanged after 45.000 opera-
tion hours (about 5 years of operation) to secure
maximum function. Defective capacitor can cause
damage.
EC-MOTOR
• Speed regulating of
EC-motor can be done
with the built-in pot-
entiometer, 0-10 V.
An
external potentio-
meter can be connected
to the terminal if
necessary.
The internal
potentiometer should
then be disconnected.
Some EC motors has tachometer output one pulse
per revolution.
• EMC-COMPATIBLE INSTALLATION OF EXTER
NAL CONTROL LINES: The control cable must not be
longer than 30 m. Screened control cables must
be used when the cable length is longer than
20 m. When using a shielded cable connect the
shielding to one side only, i.e. only to the device
with the protective ground (keep cable short and
with as little inductance as possible!). Pay atten-
tion to sufficient distance from power lines and
motor wires to prevent interferences.
Attention! Ensure correct polarity! Never apply
line voltage to analog inputs!
• The EC motor has electronically thermal-/over-
voltage
protection.
O P E R A T I O N
For technical data please see the product label.
Before starting, make sure that:
• the current does not exceed more than +5% of what
is stated on the label. • the connecting voltage is in b6% to –10%
of the rated voltage.
• no noise appears when starting the fan.