Ex Fans — Fans for use in explosion-capable areas Axial fans, Roof fans, Duct fans Installation and Operating Instructions Document in original language | · 006 GB
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Contents 1 2 3 4 5 6 7 8 General information .........................................1 1.1 Warning symbols ...................................1 1.1.1 Instruction symbols.....................1 Information on the explosion-protection devices .........................................................1 Important safety information .............................2 3.1 Personnel .............................................3 3.2 Personal protective equipment..................3 3.
General information | 1 General information 1.1 Warning symbols Danger Caution Direct hazard Failure to comply with this warning will lead directly to death or to serious injury. Hazard with a low risk Failure to comply with this warning may lead to moderate injuries. Warning Important Potential hazard Failure to comply with this warning may lead to death or serious injury. Hazard with risk of damage to objects Failure to comply with this warning will lead to damage to objects.
2 | Important safety information Warning Regarding the choice of material, the EX fans fulfil the requirements of Standard DIN 14986 (Construction of fans for use in potentially explosive atmospheres) as a result of specific protection measures in areas of potential contact between rotating and stationary components (rotor/intake nozzle). A safety clearance to the intake nozzle is guaranteed for the rotating part.
Warranty | 3.1 Personnel The fan may only be used by qualified, instructed and trained personnel. The persons must know the relevant safety directives in order to recognise and to avoid risks. The individual activities and qualifications can be found in Table 1 Qualifications, page 3.
4 | Delivery, transport, storage 5 Delivery, transport, storage Safety information Warning: Risk from rotating fan blades ♦ Prevent access by unauthorised persons by safety personnel or access protection. Warning: Suspended loads ♦ Do not walk under suspended loads. ♦ Make sure that there is nobody under a suspended load. Delivery Each fan leaves our plant in an electrically and mechanically proper condition. We recommend transporting the fan to the installation site in the original packaging.
Description | 6 Description 6.1 Intended use Indended use AW-EX, AXC-EX, AXCBF-EX, DV-EX, RVK-EX, MUB-EX • The fans are intended for installation in ventilation systems. • The fans are exclusively intended for conveying air in explosion-capable atmospheres according to the data on the name plate and this manual. • The temperature of the air transported through the fan must not exceed the temperature range stated on the name plate.
6 | Description 6.2.
Description | 6.2.2 Name plate and type key 1 2 AXC-EX 450-7/24°-2 PO-nr. / Серийный номер: PA 000000000 Volts / Напряжение, В 380 - 415 Y Hz / Частота, Гц 50 / 60 Phases / Количество фаз 3~ P2 kW / Мощность P2, кВт 2,2 Ampere / Ток, А 4,3 RPM / мин-1 2870 / 3410 Angle / Угол поворота 24° Date / Дата производства 01.08.2020 Weight kg / вес (кг) 63 Temp. from -20°C to +60°C Темп.
8 | Description 6.2.3 Wiring diagram Important Wrong connection can damage or destroy the motor. ♦ Use the information on the nameplate to select the correct connection diagram.
9 Description | 6.3 Description AW-EX Material of the housing: Galvanized, powder coated steel Material of the impeller: Galvanized, powder coated steel Speed control: Voltage controllable (See accessories in our online catalogue) Motor protection: By integrated thermal contacts Temperature classes: T1, T2, T3 (AW-EX355, AW-EX420 –> T4) Classification: Zone 1, Zone 2 Category: 2G Ignition protection class: Ex e Group: IIA, IIB 6.3.
10 | Description 6.4 Description RVK-EX Material of the housing: Conductive plastic Material of the impeller: Conductive plastic Speed control: Voltage controllable (See accessories in our online catalogue) Motor protection: By integrated PTC resistor (A motor protection device with EC test type certification has to be used.
Description | 6.4.2 Name plate and type key Systemair GmbH Seehöfer Strasse 45 97944 Boxberg GERMANY Date : 01.01.2020 isol. class :B portec. class : IP 44 m (kg) :7 3 1 2 4 5 Fan type: RVK-EX 315D4 U (V) / F (Hz) : 400Y / 50 Hz : 0,25 I (A) P1 (kW) : 0,09 n (1/min) : 1385 Temp.
12 | Description 6.5 Description DV-EX Material of the housing: Aluminium and Galvanized steel Speed control: Voltage controllable (See accessories in our online catalogue) Motor protection: By integrated PTC resistor (A motor protection device with EC test type certification has to be used. See accessories in our online catalogue) Temperature classes: T1, T2, T3 Classification: Zone 1, Zone 2 Category 2G Ignition protection class: Ex e, Ex h Group: IIA, IIB, Hydrogen (H2) 6.5.
Description | 6.5.2 Name plate and type key Systemair GmbH Seehöfer Strasse 45 97944 Boxberg GERMANY 3 1 Fan type: DV-EX 400D4 0,39kW t 2 A=81s 230 / 400V D/Y 'A/ 'N = 3,4 3 PA-Nr: 3 ~ 50Hz 1,31 / 0,76A Insulationclass F 1350 r/m Temp.
14 | Description 6.6 Description MUB-EX Material of the housing: Material of the impeller: Aluminium and Galvanized steel Speed control: Voltage controllable (See accessories in our online catalogue) Motor protection: By integrated PTC resistor (A motor protection device with EC test type certification has to be used.
Description | 6.6.2 Name plate and type key Systemair GmbH Seehöfer Strasse 45 97944 Boxberg GERMANY 1 Fan type: MUB-EX 400D4 0,39kW t 2 A=81s 230 / 400V D/Y 'A/ 'N = 3,4 3 PA-Nr: 3 ~ 50Hz 1,31 / 0,76A Insulationclass F 1350 r/m Temp.
16 | Marking 7 Marking Table 10 Marking Designation Marking Device group II Classification Device category/ classification „2G“ 2 Category 2 / Zone 1 / high safety / Devices of this category are intended for use in areas in which occasional occurrence of an explosioncapable atmosphere of gases, vapours, mists is to be expected. Increased safety, Ex eb.
Installation | 8 Installation Safety information Warning: Danger from falling fan or fan parts. ♦ Check the surface before installation for load bearing capacity. ♦ Consider all static and dynamic loads when selecting hoisting equipment and fastening components. General safety information ♦ Installation may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 3.
| Installation min. 2,5x Ø D Important Damage to the bearings or other parts of the fan can occur. ♦ Do not place a duct bend directly before or after the fan! ♦ Ensure a smooth and constant air flow to the device. min. 2,5x Ø D ØD • Round duct system: D = Nominal diameter • Rectangular duct system: D = Hydraulic diameter Air gap For all work on the fan care should be taken that the gap between the fan impeller and the fixed housing components is regular.
Installation | Installation positions AXC-EX, AXCBF-EX The installation is possible in the mounting positions, see adjacent picture. AW-EX Important Damage to the fan if condensation water can not drain. If installed in a vertical motor shaft position, condensation cannot escape. ♦ Install the fan in a horizontal shaft position. 8.2 Installation RVK-EX Air gap Table 13 Air gap RVK-EX Nominal diameter Min. air gap [mm] 315 2 Important The electrical connection of the fan must be performed on site.
20 | Installation 8.3 Installation DV-EX Air gap Table 14 Air gap DV-EX Nominal diameter Min. air gap [mm] Max. air gap [mm] all sizes 4 8 Warning Danger of injury by tilting the fan during installation. ♦ The tilting device must be secured in the opened state by screws in the designated hole against unintentional folding. 8.4 Installation MUB-EX Air gap Table 15 Air gap MUB-EX Nominal diameter Min. air gap [mm] 025 315 2.5 042 355 5 042 400 4 042 450 4 062 560 3.5 062 630 2.
Electrical connection | Changing the discharge direction MUB-EX As a default, the Multiboxes have been designed for an inline airflow direction. The airflow can be changed from inline to 90° by replacing the side panels. 3. 2. Legend 1. MUB-EX with inline airflow direction (factory assembly) 1. 2. MUB-EX with 90° airflow direction 3. Change of airflow direction 8.4.
22 | Electrical connection ♦ Check if the data on the nameplate matches the connection data. ♦ Tighten all glands well in order to guarantee protection class IP. ♦ Complete the electrical connection according to the circuit diagram. ♦ Screw the lid of the terminal box/inspection switch evenly tight. ♦ Use all of the locking screws. ♦ Connect the cable end in a dry environment. ♦ Insert the screws by hand to avoid damaging the thread.
Commissioning | 10 Commissioning The system operator is responsible for the correct operation of the fan and/or the system! Warranty claims can only be made if commissioning work is carried out correctly and written evidence thereof is provided. It is recommended to fill out the commissioning report 16 Commissioning Report, page 28.
24 | Operation 11 Operation 11.1 Safety information Danger Risk of ignition of a potentially explosive gas/air atmosphere! When commissioning the EX fan, the fundamental information from DGUV 113-001 (explosion protection rules (EX-RL)) and TRGS 727 (avoidance of risk of ignition as a result of electrostatic charges) must be known. ♦ Do not open or tip the fan if an explosive atmosphere exists. Warning: Hazard from electrical voltage or moving components.
Troubleshooting/maintenance/repair | 12.1 Troubleshooting Problem Fan does not run smoothly Air output of fan too low Thermal contacts/ resistors have triggered Fan does not reach nominal speed Motor does not rotate Electronics/ motor overheated | 006 Possible causes Remedy Impeller imbalance Rebalancing by a specialist company if possible, otherwise contact Systemair.
26 | Cleaning Note: For all other damage/defects, please contact Systemair. Defective safety-relevant fans (for Ex and smoke extraction applications) must be replaced completely. 12.2 Maintenance Warranty claims can only be made if maintenance work is carried out correctly and written evidence thereof is provided. We recommend regular maintenance intervals to ensure continuous fan operation. These maintenance intervals are specified in the “Activities” table below.
Deinstallation/dismantling | Warning Risk of ignition as a result of electrostatic charges. Because of the MUB EX plastic parts in the housing, a damp cloth has to be used for cleaning to avoid the risk of ignition as a result of electrostatic charges. 13.2 Procedure Important Keeping the fan clean extends its service life. ♦ Drain condensation off ♦ Only use compressed air if the fan is used for conveying air in the presence of gases/vapours without hovering particles.
28 | Commissioning Report 16 Commissioning Report Warranty claims can only be made if commissioning work is carried out correctly and written evidence thereof is provided. Fan Description: Article no.: Manufacturing order no.: Installer Company: Contact person: Company address: Tel. no.: Email: Operator (Place of installation) Company: Contact person: Company address: Tel. no.
Commissioning Report | Current L1 [A]*: Fan impeller speed [rpm]: Current L2 [A]: “Air volume”, “Differential pressure” not necessary for Jet fans Air volume [m3/s]: Current L3 [A]: Differential pressure [Pa]*: *For single-phase fans, fill in line “Current L1 [A]” *Δ- Pressure between suction-side and discharge of the fan If an air flow measurement is not possible, this value can be calculated using the following formula: = X Duct cross-section [m²] Commissioning of the fan successful? Date, inst
Tel.: +49 (0)7930/9272-0 Fax: +49 (0)7930/9273-92 info@systemair.de www.systemair.de Ex Fans — Fans for use in explosion-capable areas · Installation and Operating Instructions · · en_GB · 2022-08-24 · 006 Systemair GmbH Seehöfer Str.
