Helios SilentBox SB Serie Notice De Montage Et D'entretien page 22

Installation and Operating Instructions
EN
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DANGER
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WARNING
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CHAPTER 7
FUNCTION FOR
INSTALLER
NOTE
NOTE
Centrifugal Fan Boxes – SilentBox
6.5 Electrical connection / Start-up
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DANGER!
Touching live parts will lead to electric shock.
Isolate the unit from the mains power supply before connection!
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WARNING!
The rotating impeller can crush fingers.
Ensure protection against contact before start-up!
– The electrical connection and initial start-up must only be carried out by qualified electricians
according to the information in the attached wiring diagrams.
– All relevant standards, safety regulations (e.g. DIN VDE 0100), as well as the technical connection conditions of
energy suppliers are to be adhered to!
– A multipole mains section switch/isolator, with a minimum contact opening of 3 mm (VDE 0700 T1 7.12.2/
EN 60335-1) is mandatory!
– Network configuration, voltage and frequency must be consistent with the rating plate information.
– Check the waterproofing of the connection cable and tight clamping of the strands.
– Metal cable screws must not be used when connecting to plastic terminal boxes.
– Insert the supply line so that no water can get in along the cable in case of water exposure.
– Check designated use of fan.
– Compare mains voltage to rating plate data.
– Check fan for solid mounting and professional electrical installation.
– Check all parts for tightness, particularly screws, protection guards. Do not loosen screws in the process!
– Check free movement of the impeller.
Wear protective gloves when checking unhindered running of impeller!
– Compare power consumption to rating plate data.
– Check protective conductor connection.
6.6 Operation
In order to ensure the proper functioning of the fan, the following must be checked regularly:
– Formation of dust or dirt deposits in the casing or on the motor and impeller.
– Freewheeling of impeller. Wear protective gloves when checking freewheeling of impeller!
– Occurrence of excessive vibration and noise.
If excessive vibration or noise occurs, maintenance must be carried out according to the instructions in CHAPTER 8.
7.1 Functional description SB
The Silentboxes SB.. are speed controllable by means of voltage reduction. Power adjustment through voltage reduc-
tion can be carried out using phase control devices or transformers (TSW/ TSD...). When using electronic actuators or
controllers (ESU../ESA..., ESD...), electromagnetic motor noise (humming) may occur in the low speed range. This is not
the case when using transformer controllers. With regard to noise-critical installations, this solution is preferred.
Three-phase fans are suitable for operation with frequency inverters with integrated sine filters
(Helios type FU-BS or FU-CS). The frequency inverter settings can be found on the fan type plate.
NOTE !
In order to ensure sufficient motor cooling, a minimum speed/voltage, which also depends on on-site
resistances, wind pressure, etc., must be observed.
When dimensioning the control units, it is important to note that current peaks can occur within the controlled voltage
field. The control units must therefore be dimensioned according to our technical specifications.
Suitable control units are offered as accessories.
NOTE !
The use of third party products, especially other electronic devices, can lead to functional problems, the
destruction of the controller and/or fan. If control units are used, which have not been approved by Helios, all
warranty and liability claims shall lapse.
7.2 Wiring diagram overview
– Types SB 125 -250
Fig. 10
92524 001 SS-508 13.10.03
® SB ...
L N PE
L N PE
8
SS-508