Application; Personnel Qualification; Functional Safety - Emergency Operation - Helios SilentBox SB 125 A Montage- Und Betriebsvorschrift

Installation and Operating Instructions
UK
DANGER
Centrifugal Fan Boxes – SilentBox
• 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!
• 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 Silentboxes SB.. 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 documents / 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.
Certain types, e.g. SB 160 B must not be operated with no exhaust line, as otherwise motor overloading may occur,
which leads to deactivation through the thermal contacts, provided that they are connected correctly. Therefore, the use
of these types must only take place in the approved performance curve range (see sales documents) or against a defi-
ned minimum resistance (Fig. 1).
Fig.1
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.
Silentboxes SB.. can be used by children over the age of 8 as well as persons with physical, sensory, or mental disabi-
lities 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 car-
ried 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 automa-
tically guaranteed in case of fan failure. Suitable solutions are, for example,: parallel operation of two less powerful units
with a separate electric circuit, standby fan, alarm systems and emergency ventilation systems.
®
SB ...
2