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Ex Fans — Fans for use in explosion-capable areas Axial fans, Roof fans, Duct fans Installation and Operating Instructions Document in original language | · 002...
General information | General information Notice symbols Danger Caution Hazard with a low risk Direct hazard Failure to comply with this warning may lead to Failure to comply with this warning will lead moderate injuries. directly to death or to serious injury. Important Warning Hazard with risk of damage to objects...
| 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.
Further prerequisites are a completed maintenance plan with no gaps and a commissioning re- port. Systemair will require these in the case of a warranty claim. The commissioning report is a component of this document. The maintenance plan must be created by the operator, see section 12.2 Maintenance, page 25.
| Delivery, transport, storage 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.
Description | Description 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.
Ignition protection class: Ex e Group: IIA, IIB 6.3.1 Accessories Note: For details of the accessories, please check our online catalog or contact Systemair. Table 3 Accessories Axial fan with a wall plate — explosion-proof AW-EX Protection grille SG-AW Louvre shutter 6.3.2...
Ignition protection class: Ex e, Ex h Group: IIA, IIB, Hydrogen 6.4.1 Accessories Note: For details of the accessories, please check our online catalog or contact Systemair. RVK-EX RVK-EX Silencer Back draft damper Round protection grille Back draft damper Protection guard...
| Description 6.4.2 Name plate and type key Systemair GmbH Seehöfer Strasse 45 97944 Boxberg Fan type: RVK-EX 315D4 GERMANY U (V) / F (Hz) : 400Y / 50 Hz Date 01.01.2020 I (A) 0,25 isol. class P1 (kW) 0,09 portec.
Ignition protection class: Ex e, Ex h Group: IIA, IIB, Hydrogen 6.5.1 Accessories Note: For details of the accessories, please check our online catalog or contact Systemair. Table 6 Accessories Roof fan - explosion- DV-EX proof Back draft damper VKS—EX...
Classification: Category Ignition protection class: Ex e, Ex h Group: IIA, IIB, Hydrogen 6.6.1 Accessories Note: For details of the accessories, please check our online catalog or contact Systemair. Table 8 Accessories Flexible connection Weather protection grille Weather protection guard...
Marking | Marking Table 10 Marking Designation Marking Device group II Classifi- All areas with explosion-capable atmosphere cation apart from mining, underground and above ground in cases of mien damp. Device „2G“ Category 2 / Zone 1 / high safety / Devices of category/ this category are intended for use in areas in classification...
| Installation 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 ♦...
Below sketch illustrates the different kinds of air gaps. Radial fan Axial fan Installation AW-EX, AXC-EX, AXCBF-EX Air gap Table 11 Air gap AW-EX Nominal diameter Min. air gap [mm] Nominal diameter Min. air gap [mm] 6.45...
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.
Installation | Installation DV-EX Air gap Table 14 Air gap DV-EX Nominal diameter Min. air gap [mm] Max. air gap [mm] all sizes 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.
♦ Electrical connection may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page Preconditions ♦ Potentially, the fans may become charged with static electricity. If this represents a risk, please contact Systemair. ♦ If fans with motors of ignition protection class „d“ are controlled by frequency converter, a thermal protection (PTC) in the motor is necessary.
♦ Potentially, the fans may become charged with static electricity. If this represents a risk, please contact Systemair. Protective grounding wire The protective grounding must have a cross-section equal to or greater than that of the phase conductor.
| Commissioning 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 27. Danger Risk of ignition of a potentially explosive gas/air atmosphere! ♦...
Operation | 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.
12.1 Troubleshooting Problem Possible causes Remedy Rebalancing by a specialist company if Impeller imbalance possible, otherwise contact Systemair. Soiling on the impeller Clean carefully, rebalance Material decomposition on the impeller due to Contact Systemair aggressive material conveyed. Change direction of rotation (swap two phases Fan does not Impeller rotates in wrong direction.
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.
| 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.
Commissioning Report | Commissioning Report Warranty claims can only be made if commissioning work is carried out correctly and written evidence thereof is provided. Description: Article no.: Manufacturing order no.: Installer Company: Contact person: Company address: Tel. no.: Email: Operator (Place of installation) Company: Contact person: Company address:...
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| Commissioning Report Fan impeller speed [rpm]: Current L1 [A]*: Current L2 [A]: 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: Flow speed [m/s] Duct cross-section [m²]...
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