Area Of Application; Boundaries - Helios AMD Série Notice De Montage Et D'utilisation

Installation and Operating Instructions
EN
AMD – Medium-pressure axial fans
The installation area must be designed so that people cannot be endange-
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red.
The outlet area of the fan must not be accessible to persons.
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It must be checked whether ear protection is necessary for the installation
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situation.
The operator is responsible for observing all plant-related safety regulations!
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Abnormally frequent activation/deactivation is not permissible.
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Protection against contact for the impeller must be ensured pursuant to DIN
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EN 13857.
It must be ensured that no water can get into the fan!
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In order to maintain operational safety, a regular vibration check must be
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carried out! Alternatively, the installation of an on-site vibration monitoring
system is recommended. The information and permissible vibration limits
according to ISO 14694 from the table on page 10, section 3.9 must be
observed.
The planner and operator must ensure easy access for inspection and cle-
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aning work!
A uniform inflow and free outlet must be ensured.
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1.3

Area of application

– Intended use
Operation within the characteristic curve of the respective unit (see catalogue). Vibrations and an increase in noise
generation indicate operation outside of the characteristic curve.
Ventilation mode
Conveyance of normal or slightly dusty (particle size < 10 µm), less aggressive and humid air, in moderate climates at
temperatures in the range of -20 °C to +60 °C, with stationary installation of the fan.
Installation
Inside buildings or outdoors (protected from the elements). Vertical and horizontal installation is possible.
– 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. Use within
a mobile unit (e.g. vehicles, aircraft, ships, etc.) is not intended.
– Improper, prohibited use
Outdoor installation without effective weather protection or in direct contact with water. Conveyance of explosive gas
mixtures/media. Installation in an explosive area/atmosphere. Operation without standardised safety devices (e.g.
protective grille). Conveyance of solids or solid content > 10 µm in the conveyed medium and liquids. Conveyance of
abrasive and/or fan material-corrosive media. Conveyance of conveyed medium containing fat.
1.4

Boundaries

Spatial boundaries
A straight, flat pipe section of 2.5 x D must be ensured before and after the fan. In any case, a suction nozzle must be
placed at the beginning of the pipe section on the intake-side of the fan. When using at the start or end of a pipeline,
the area without pipe must also be kept clear in the same way. The discharge-side environment must not be accessible
for persons. The fan must be easily accessible for cleaning and maintenance purposes, particularly the terminal boxes.
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 isolator
switch may be necessary for full isolation from the power supply. Analysis of the PTC thermistor via a full motor pro-
tection switch type MSA (Helios accessories).
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