2
Rectangular Centrifugal Fans – InlineVent
®
SKR/KR ...
Installation and Operating Instructions
• Protection against contact must be ensured pursuant to DIN EN 13857
in the installed condition (see section 2.8)!
Contact with rotating parts must be avoided!
• It must be ensured that there are no textiles (e.g. curtains or other
materials that could be sucked up, such as clothing, located in the inta-
ke area.
• A uniform inflow and free outlet must be ensured!
• When using a vented fire place (chimney) in a ventilated room, there
must be sufficient supply air for all operating conditions (consult chim-
ney sweep).
The current locally applicable regulations and laws must be observed!
1.3 Application
– Normal use:
The rectangular centrifugal fans SKR.. / KR.. are for conveying normal or slightly dusty (particle size < 10 µm), less
aggressive and humid air, in moderate climates and in the range of their performance curves, see Helios sales docu-
ments / internet. Operation is only admissible with fixed installation within buildings. The maximum admissible media
and ambient temperature can be found on the type plate.
– Reasonably foreseeable misuse:
The fans are not suitable for operation under difficult conditions, such as high levels of humidity, aggressive media, long
standstill periods, heavy contamination, excessive loads due to climatic, technical or electronic influences. The same
applies for the mobile use of fans (vehicles, aircraft, ships, etc.). Usage under these conditions is only possible with
release approval from Helios, as the standard version is not suitable in this case.
– Improper, prohibited use:
Any use other than the intended use is not permitted! The conveying of solid matter or solid matter content > 10µm in
air and liquid is not permitted. Transport media, which affect the materials of the fan, and abrasive media are not permit-
ted. Use in explosive atmospheres is not permitted! Outside operation of the fan is not permitted.
1.4 Personnel qualification
DANGER!
The electrical connection and start-up as well as the installation, servicing and maintenance of the fan must only be
carried out by qualified electricians.
Rectangular centrifugal fans SKR.. / KR.. can be used by children over the age of 8 as well as persons with physical, sensory,
or mental disabilities or lack of experience and knowledge, if they are supervised or instructed with regard to the safe use of
the unit and they understand the resulting risks. Children must not play with the unit. Cleaning or user maintenance must not
be carried out by unsupervised children.
1.5 Functional safety – Emergency operation
When using the fan in an important supply function, the plant is to be designed so that emergency operation is automatically
guaranteed in case of fan failure. Suitable solutions are, for example,: parallel operation of two less powerful units with a sepa-
rate electric circuit, standby fan, alarm systems and emergency ventilation systems.
1.6 Product service life
The motors are equipped with maintenance-free, permanently lubricated ball bearings. Under normal operating condi-
tions, they should be replaced after approximately 40,000 operating hours, standstill or long storage periods of more
than 2 years.
2.0 Warranty claims – Exclusion of liability
All versions of this documentation must be observed, otherwise the warranty shall cease to apply. The same applies
to liability claims against Helios. The use of accessory parts, which are not recommended or offered by Helios, is not
permitted. Any possible damages are not covered by the warranty. Changes and modifications to the unit are not per-
mitted and lead to a loss of conformity, and any warranty and liability shall be excluded in this case.
2.1 Certificates - Guidelines
If the product is installed correctly and used to its intended purpose, it conforms to all applicable EU guidelines at its
date of manufacture.
2.2 Shipping
The fan is packed ex works in such a way that it is protected against normal transport strain. Carry out the shipping
carefully. It is recommended to leave the fan in the original packaging. The fan must be kept in the housing for transpor-
tation or installation. Only use appropriate lifting equipment and fastening devices.
DANGER
CHAPTER 2
GENERAL INFORMATION
UK
