Axial wall fan
DAQ 71/4 Ex
Manufacturer: MAICO
Axial wall fan with square wall plate, DN 710, three-phase AC, explosion-proof, nominal power 2.2 kW, medium:... more information
Application examples: explosion-proof industrial applications, Process exhaust air
Product data sheet
Characteristic curve
Dimensioned drawing
DAQ 71/4 Ex - Dimensioned drawing [mm]
Technical data
DAQ 71/4 Ex - Technical data
Accessories
DAQ 71/4 Ex - Accessories
Specific accessories
| Product type | Name | Art. No. | Price*(EUR) | Action |
|---|---|---|---|---|
| Machine protection relay thermistor | TMS | 0157.0992 | on request | |
| Differential pressure switch | DDEx 500 | 0157.0302 | on request |
General accessories
| Product type | Name | Art. No. | Price*(EUR) | Action |
|---|---|---|---|---|
| Shutter | AS 71 Ex New development | 0151.0410 | on request | |
| Connection frame | VRI 71 | 0073.0341 | on request | |
| Protection against accidental contact | SGSI 71 | 0073.0343 | on request |
Product description
Productdescription
DAQ 71/4 Ex
short description
Axial wall fan with square wall plate, DN 710, three-phase AC, explosion-proof, nominal power 2.2 kW, medium: gasProduct description
Features
- Axial wall fan for applications in areas subject to explosion hazards.
- Explosion protection and approvals in accordance with ATEX.
- Qualified for all gases and vapours of Ex group IIA and IIB and also for hydrogen.
- Ex II 2 G Ex db IIB+H2 T4 Gb X / Ex II 2 G Ex h IIB+H2 T4 Gb X.
- For usage temperatures of -20°C ≤ Ta ≤ +40°C.
- MAICO Ex fans fulfil the safety requirements of European Directive 2014/34/EU for units and protective systems in potentially explosive atmospheres.
- For zone 1 and 2.
- Types of ignition protection: “d” – pressure-proof housing and “c” – constructional safety.
- With square wall plate.
- Powerful fan for large air volumes.
- Housing and wall plate made of sheet steel.
- Axial impellers made of glass-fibre reinforced, antistatic polyamide.
Air flow direction
- The air flow direction is marked.
- Standard exhaust air mode, air flow direction with air drawn across motor.
Motor
- Asynchronous three-phase AC motors.
- IP 55 degree of protection.
- IE3 motor.
- S1 operating mode (continuous operation).
- Temperature class T4.
- Speed-controllable with frequency converter.
- Permissible frequency range for speed control with frequency converter is 20 Hz to 50 Hz.
- The temperature in the fan motor is monitored by PTC thermistors. The PTC thermistors must be connected to a triggering system (safety device according to Directive 2014/34/EU), that separates the fan permanently from the power if the temperature gets too hot.
Electrical connection
- Connection in the terminal box on the motor.
- Cable screw connection, in Ex d version, included in the scope of delivery.
Special versions
- The following special versions are available on request, at an extra cost:
- Version for supply air mode with air flow direction blown across the motor.
Wiring diagram
DAQ 71/4 Ex - Wiring diagram
Downloads / Videos
DAQ 71/4 Ex - Downloads / Videos
Predecessor - successor
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