Protection Against Contact; Personnel Qualification; Air-Flow Direction And Direction Of Rotation - Helios B AMD Série Notice De Montage Et D'utilisation

Installation and Operating Instructions
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Meduim-Pressure Axial Smoke Extraction Fans – B AMD F300/F400
Power supply interface:
Connection only with fixed wiring with function preservation
• single-speed, direct startup (3x phase + PE + thermistor (PTC))
• single-speed, star-delta startup (6x phase + PE + thermistor (PTC))
• two-speed, Dahlander (6x phase + PE + thermistor (PTC))
An option to fully isolate the unit from the power supply is mandatory! Depending on the local circumstances, an iso-
lator switch may be necessary for full isolation from the power supply. Analysis of the PTC thermistor via a full motor
protection switch type MSA (Helios accessories). This must be bridged in a smoke extraction situation).
Time:
Ventilation mode:
The motor bearings must be replaced after 5 years. When using bearing condition diagnostics, different regulations shall
apply, see test and maintenance plan.
Smoke extraction mode:
The unit must be disposed of following smoke extraction operation!
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Protection against contact

The generally applicable safety at work and accident prevention regulations must be observed for installation!
The operator is responsible for observing these regulations!
– Contact with rotating parts must be avoided. It must be ensured that there must be no persons, textiles or other
materials that could be sucked up, such as clothing, located in the intake area.
– Protection against contact may be necessary on the suction side depending on the installation conditions.
Appropriate protection grilles are available as accessories.
– Fans which are protected by their installation method (e.g. installation in ventilation ducts or closed assemblies) do
not require protection guards if the plant provides the necessary level of safety. Please note that the operator is
responsible for complying with the current standard (DIN EN 13857) and can be held liable for accidents as a
consequence of missing protection systems.
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Personnel qualification

– All electrical work as well as the start-up must only be carried out by qualified electricians.
– Installation, servicing and maintenance may be carried out by specialists (e.g.: industrial mechanics, mechatronics
engineers, metal workers or persons with comparable training) with the exception of electrical work.
– In case of repair work to the smoke extraction fans, these must be returned to Helios .
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Air-flow direction and direction of rotation

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Parts ejected from the fan may damage your eyes!
Wear protective glasses when checking the direction of rotation!
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– The rotating impeller can sever or trap your fingers/arms!
– Operation only with mounted safety fittings!
– Risk of damage!
– Do not insert objects into the rotating impeller!
The air flow direction is blowing over the motor (see air and direction of rotation arrows).
The correct direction of rotation is right clockwise when viewing the impeller from the front.
The direction of rotation may only be checked when the fan is switched off and coasting!
The incorrect direction of rotation can lead to overheating and lack of fan performance!
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