2
GB
Safety Information
All fans are intended for transportation of air in air handling
systems. They are meant to be used after building them into
machines or duct systems or after contact protection grid
has been installed. (SS-EN 294). 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, (with exception of roof
fans). Safety accessories (i.e. motor protection, safety grille)
may not be dismounted, short cut or disconnected.
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.
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.
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 in the terminal box, markings on terminal blocks or
on cable. The terminal box is accessed by removing the top
cover of the fan by 4 screws. CAUTION Do not use metal
compression gland fittings with plastic terminal boxes. Use
a dummy plug seal for the compression gland fitting as well.
The fan must be installed so that vibrations are not
transmitted to duct systems or frame of building. (Suitable
accessories like fast clamps and diffusers are available).
Make sure the assembly of the fan is firmly fixed and stable.
The fan can be mounted in any direction unless stated
otherwise. If the roof fan is installed so that it can be
dismounted a revision switch has to be applied. The fan
should then be connected with a cable suitable for outdoor
connection (cable diameter 7-13mm). When mounting is
made directly onto a circular duct the square mounting plate
is removed. The fastening screws on the bottom are then
srewed into the holes of the inlet part.
The fans must be assembled so that service and
maintenance can be performed easily and safely. Disturbing
noise can be avoided by installing silencer (available
accessory).
For frequency regulation an all pole sinus filter must be
mounted between motor and frequency controller (version
all poles: phase to phase, phase to earth). Fans are meant
for continuous use within the temperature range stated.
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 v6%, -10%, according to IEC
38. Rated current must not be exceeded with more than 5%
at rated voltage. CAUTION When speed regulating by
reducing the voltage the motor current may exceed the
rated current at a lower voltage. In this case the motor
windings are protected by the thermal contact. The
minimum static fall of pressure must observed.
- Smoothness of motor operation, (no abnormal noises).
Maintenance, Service and Repair
Before maintenance, service or repair make sure that:
- Power supply is interrupted (all-pole circuit breaker).
- Fan impeller has come to a complete standstill
- Observe personnel safety regulations!
The fan should be cleaned when necessary, at least 1/year
to avoid imbalance and unnecessary damage to the
bearings. A filter will prolong the time interval between each
cleaning of the fan. (It is sometimes recommended to install
a filter guard). The fan bearings are maintenance free and
should only be replaced if damaged. Do not use a high-
pressure cleaner (steam jet) when cleaning the fan. Make
sure the fan impeller's balance weights are not moved or
the fan impeller distorted. Listen for abnormal operating
noise.
Resetting of the thermal trips
Automatic thermal trips resets it selves after the motor has
cooled. (TW)
Manual thermal trips (SP1) are reset by disconnecting the
mains for approx. 10-60min.
Make sure the fan has not been blocked or that the motor
protection has tripped. Contact the supplier if the motor
does not start after controlling and/or resetting the motor
protection.
