STANDARDS - RULES CONVENTIONS SMOKE EXTRACTION GENERAL VENTILATION EXPLOSIVE ATMOSPHERES AREM is one of the largest French manufacturers of fans known throughout Europe. AREM is especially known for its experience in making axial fans. Belt-driven and directdriven, with short or long casings, with or without venturi, they are all designed in accordance with the specifications for the numerous applications for which they are intended. INDUSTRIAL VENTILATION Centrifugal fans using forwards or backwards inclined blades have just joined this range, which is one of the most extensive on the market....

INDUSTRIAL VENTILATION EXPLOSIVE ATMOSPHERES GENERAL VENTILATION SMOKE EXTRACTION AXUS RANGE : AX BX CX EX Direct-driven... ...With motorized opening Roof fan - Horizontal discharge Roof fan -Vertical discharge ... With ECM AXUS EC RANGE : Axus with EC motors ...Specific with EC motors

CELN CELN EC VGND VGNT Plenum box – backwards inclined blades Plenum box – forwards inclined blades INDUSTRIAL VENTILATION COOLING Available on request Available on request G Series R Series V Series Z Series VRD/VRDGT RL/RM EC EXPLOSIVE ATMOSPHERES GENERAL VENTILATION SMOKE EXTRACTION TCH TCV TCO TCVP Roof fan with vertical discharge SMALL DIAMETER : CP CB Plastic casing... Roof fan with horizontal discharge ...Steel casing THE VENTILATION PERFORMANCE

Any errors or omissions that may have found their way into this catalog, despite the care taken in producing it, do not engage the liability of AREM. We reserve the right to make modifications resulting from technical, mechanical, electrical or other types of changes. The illustrations are non-binding.

AREM makes axial and/or centrifugal fans for industrial and tertiary applications. The impeller may be driven directly or by a belt. These basic elements of the fan are available in several ranges: • Axial fans: - direct-drive with short or long casing - belt-drive (system of pulleys and belt) • Centrifugal fans: - direct-drive with single inlet - direct-drive with double inlet • Plenum boxes: - with forward or backwards inclined blades - with acoustic insulation - with motorized opening and closing • Centrifugal and axial roof fans: - with horizontal discharge - with vertical discharge • Jet...

STANDARDS - RULES CONVENTIONS AREM CONVENTIONS – AXIALS Direction of rotation / Air direction • When facing the air flow, the rotation of the impeller to the L (left) or R (right) is represented as follows: Rotation L When the air flow is unidirectional, the air can flow either in direction A (the air circulates from the motor to the impeller) or in direction B (the air circulates from the impeller to the motor): HORIZONTAL flow Direction “B” HORIZONTAL flow Direction “A” VERTICAL flow Direction “B” VERTICAL flow Direction “A” Comments For a belt-driven fan, the equivalent of the motor mark is...

STANDARDS - RULES CONVENTIONS AREM CONVENTIONS – CENTRIFUGALS Direction of rotation / Air direction / Outlet positions • When facing the rear flange of the motor, the rotation of the impeller in direction RD (right) or LG (left) is defined as follows: RD Rotation BACKWARD curved blades RD Rotation FORWARD curved blades RD Rotation STRAIGHT blades LG Rotation BACKWARD curved blades LG Rotation BACKWARD curved blades LG Rotation BACKWARD curved blades The casing can generally be orientated in steps of 45° (reference 0°, 45°, 90°, 135°, 180°, 225°, 270° and 315°) as in the representations below:...

STANDARDS - RULES CONVENTIONS AREM CONVENTIONS – CENTRIFUGALS Outlet positions / Executions • Specific positioning for VAD / VRD fans type: Standard executions: Execution 1 (Ex.1) Wheel mounted on the transmission shaft Mounting on bearings Execution 4 (Ex.4) Semi-flexible coupling Foot-mounted motor Execution 9 (Ex.9) Direct coupling Stand-mounted motor Execution 5 (Ex.5) Belt drive (system of pulleys and belts) Side-mounted motor Execution 12 (Ex.12) Direct coupling Flange-mounted motor Belt drive (system of pulleys and belts) Frame-mounted motor

STANDARDS - RULES MATERIALSApplications and temperature limits Our impellers are mainly made of plastic, aluminium or steel components. The temperature limits are suitable for continual use. For short-term use, these limits will be revised. THE VENTILATION PERFORMANCE I www.arem.fr I Catalog 2020.V1.3

MOTORS General information 1 • Polarity - Speed: In direct-drive, the fan is generally fitted with an asynchronous motor with one or two rotation speeds characterized by the number of poles. Depending on the polarity, the theoretical synchronous speeds are: It is essential to let us know the power supply network in order to define the optimal motor according to requirements. • One speed motor coupling: As a rule, the motors are designed to work with two potential voltage sources, lower (delta connection) or higher (star connection). For example, for a motor plate indicating 230V/400V, the lower...

STANDARDS - RULES CONVENTIONS MOTORS General information 2 • Two speed motor coupling: Two-speed motors of the Dahlander type or with independent winding are common. On a servo system, changing from a low to high speed requires the use of a switching system following the principle below: Low speed High speed Dahlander two-speed motor Two-speed motor with independent winding • Type of assembly: The working position of a motor is very varied; standard IEC 60034-7 defines mounting arrangements. The most common positions are: B3: Horizontal on foot B5: Horizontal on flange on motor shaft side V1:...

STANDARDS - RULES CONVENTIONS ANCILLARIES General An axial or centrifugal fan can be fitted with ancillaries according to requirements and assembly types. Below are typical representations using different components: • Ancillaries for horizontal mounting (H) Fan (type AX, BX, CX, DX, etc.) Sheet metal flange Flexible coupling flange Suspended horizontal mounting Outlet backdraught damper, horizontal Anti-vibration mounts Support feet Junction box Inlet bellmouth Ancillaries for vertical mounting (V) Safety guard (meshing M10, M20 or M30) Roof cowl Outlet backdraught damper, vertical Base plate...