Axial roof fan
DZD 40/4 B Ex e
Manufacturer: MAICO
Axial roof fan, horizontal air outlet, DN400, three-phase AC, explosion-proof, medium: gas
Application examples: Environment with explosion hazard (zone 1 and 2), Dye shop, Battery room, Workplace, Storage facility
Product data sheet
Characteristic curve
Dimensioned drawing
DZD 40/4 B Ex e - Dimensioned drawing [mm]
Technical data
DZD 40/4 B Ex e - Technical data
Accessories
DZD 40/4 B Ex e - Accessories
Specific accessories
| Product type | Name | Art. No. | Price*(EUR) | Action |
|---|---|---|---|---|
| Flexible coupling | ELA 40 Ex | 0092.0278 | on request | |
| Flexible cuff | EL 40 Ex | 0092.0235 | on request | |
| PTC thermistor triggering device | MVS 6 | 0157.0585 | on request | |
| Machine protection relay thermistor | TMS | 0157.0992 | on request | |
| Differential pressure switch | DDEx 500 | 0157.0302 | on request | |
| Vibration sensor | SWEx | 0157.0303 | on request |
General accessories
| Product type | Name | Art. No. | Price*(EUR) | Action |
|---|---|---|---|---|
| External grille | MLZ 40 | 0151.0105 | on request | |
| Protective grille, metal | SG 40 | 0150.0118 | on request | |
| Counter flange | GF 40 | 0056.0006 | on request | |
| Counter socket | GS 40 | 0055.0172 | on request | |
| Suction nozzle | AD 40 | 0180.0623 | on request | |
| Socket sound absorber | SD 40 | 0092.0342 | on request | |
| 5-step transformer | TR 0,8-2 | 0157.0148 | on request | |
| 5-step transformer, control cabinet | TR 0,8 S-2 | 0157.0151 | on request | |
| 5-step switch for TRE...S -2/ TR...S-2 5-step transformers | DSS 20 | 0157.0750 | on request | |
| Roof socket for flat roofs | SO 40 | 0093.0363 | on request | |
| Roof socket for pitched roofs | SDS 40 | 0093.0979 | on request | |
| Roof socket for corrugated and trapezoidal roofs | SOWT 40 | 0093.0988 | on request | |
| Intermediate socket | SZ 40 No longer available for delivery | 0092.0291 | on request |
Product description
Productdescription
DZD 40/4 B Ex e
short description
Axial roof fan, horizontal air outlet, DN400, three-phase AC, explosion-proof, medium: gasProduct description
Product model
- For usage temperatures of -20°C ≤ Ta ≤ +40°C.
Special features
- Axial roof fan, explosion-proof, medium: gas.
- Explosion protection and approvals in accordance with ATEX and IECEx.
- Ex II 2 G Ex eb IIB + H2 T3/T4 Gb / Ex II 2 G Ex h IIB + H2 T3/T4 Gb.
- Operating temperatures depend on temperature class: T3 -20 °C ≤ Ta ≤ +60 °C, T4 -20 °C ≤ Ta ≤ +40 °C.
- Qualified for all gases and vapours of Ex group IIA and IIB and also for hydrogen.
- 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: “e”- increased safety and “c”- constructional safety.
- IP 64 degree of protection.
- Base plate, intake nozzle and rain protection cover made of galvanised sheet steel.
- Horizontal air blowout direction.
- Sturdy eyebolts enable transport by crane.
- Can be switched to ventilation or air extraction.
Impeller
- Axial impeller made of conductive plastic.
- Balance quality of the motor/impeller combination G 6.3 according to category BV-3 in accordance with ISO 14694.
Air flow direction
- The air flow direction is marked.
- Standard exhaust air mode, air flow direction with air blown across motor.
Motor
- Robust three-phase AC motor with ball bearings, maintenance-free.
- Reversible.
- Reversing mode: The volumetric flow is reduced by approx. 35 % with abnormal air flow direction.
- S1 operating mode (continuous operation).
- Speed control permitted with TR... transformer. Exception: DZD 35/2 B Ex...
- 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.
- The MAICO PTC thermistor triggering device MVS 6 or TMS is recommended as the triggering system.
Electrical connection
- Connecting cable, approx. 1.7 m long.
- Separate terminal box, explosion proof, with cable screw-connections.
Required safety technology
- A PTC thermistor triggering device is needed to fuse the DZD-Ex units.
- Maico provides the MVS 6 PTC thermistor triggering device and TMS for this purpose.
- MVS 6 PTC thermistor triggering device
- Independent complete system.
- For monitoring the maximum motor temperature.
- Type-examination tested according to Directive 2014/34/EU (ATEX).
- Installation exclusively in non-explosive areas.
- TMS thermistor machine protection relay
- For monitoring the maximum motor temperature.
- Suitable for installation in control cabinets
- Type-examination tested according to Directive 2014/34/EU (ATEX).
- Installation exclusively in non-explosive areas.
Safety information
- The fan may be operated only if the protection against accidental contact with the impeller is guaranteed to be in accordance with DIN EN ISO 13857 for fans with free inlet and outlet, e.g. with an SG protective grille.
Special versions
- Special voltages are available as special versions on request and at extra cost.
- Information on operation at temperatures occasionally below -20°C available upon request.
- Feasibility must be checked in each case.
Wiring diagram
DZD 40/4 B Ex e - Wiring diagram
Downloads / Videos
DZD 40/4 B Ex e - Downloads / Videos
Predecessor - successor
DZD 40/4 B Ex e - Predecessor
| Product type | Name | Art. No. | Action |
|---|---|---|---|
| Axial roof fan | DZD 40/4 A-Ex No longer available for delivery | 0087.0776 |
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