Design
The IEC motor sits in the airstream inside a cylindrical casing. The hot-dip galvanised casing has flanges to DIN 24154 R2 and fits directly into a duct or shaft. The hub and blades are pressure-cast aluminium; plastic (PP) blades are used for some duties. The blade pitch is set at standstill and the blade count is chosen from 3, 5, 6, 7, 10 and 14, so the fan can be tuned to the design point.
Wolter has also developed carbon-fibre composite impellers for this series.
F300 and F400 smoke exhaust
The smoke exhaust versions are tested to EN 12101-3 and CE marked under Regulation (EU) 305/2011, with production supervised by the notified body MPA Braunschweig. The classes are F300 (300 °C for 60 or 120 minutes) and F400 (400 °C for at least 120 minutes). These fans are fitted with special certified motors.
In fire mode the fan runs without thermistor protection and bypasses the frequency inverter, as the manufacturer requires. The control panel design has to provide for this.
Maintenance
The manufacturer recommends inspecting:
- general-purpose fans every 12 months;
- F300/F400 fans that run daily every 6 months;
- F300/F400 fans that only run in a fire every 3 months.
When to choose AXV / BXV
- high airflow is needed at up to 1,500 Pa per stage;
- the fan serves a car-park shaft together with jet fans and must be rated F300 or F400;
- two- or three-speed motors are needed for several operating modes;
- an explosion-proof or marine motor is required, for example for marine fans;
- the fan serves a metro or tunnel ventilation system — stainless steel versions are available.
For higher pressure or two independent stages, consider the two-stage AXG.
Technical data
| Airflow | 1,000–200,000 m³/h |
|---|---|
| Pressure | up to 1,500 Pa |
| Temperature rating | F300 (300 °C, 60/120 min), F400 (400 °C, ≥ 120 min) |
| Sizes | Ø 315–1600 mm |
| Motor | IEC squirrel-cage (EPACT optional), insulation class F, IP55; two- and three-speed versions (Dahlander or separate windings); explosion-proof and marine motors |
| Materials | Casing — hot-dip galvanised steel, flanges to DIN 24154 R2; hub and blades — pressure-cast aluminium; blades in aluminium (AL) or plastic (PP) |
| Mounting | Horizontal or vertical, all arrangements (default S) |
| Air temperature | −20…+40 °C — general-purpose versions |
| Larger sizes | up to 1800 — per the manufacturer’s jet-fan systems brochure (2019) |
| Blade count | 3, 5, 6, 7, 10 or 14; pitch adjustable at standstill |
| Casing | long (LH) with external terminal box or short (SH); light L version in galvanised sheet steel |
| Type code example | AXV-AL 450-7/26° LH100-2 SU 400°C/2h |
| Smoke exhaust | EN 12101-3, CE under Regulation (EU) 305/2011, MPA Braunschweig supervision; certified motors |
| Energy efficiency | declaration under Directive 2009/125/EC and Regulation (EU) 327/2011 (2015); performance to DIN EN ISO 5801 / AMCA 210 |
| Inverter control | for thermistor-protected motors, at least 30 % speed; F300/F400 bypass the inverter in fire mode |
Versions
- AXV — the code gives impeller diameter and blade count, e.g. AXV-AL 450-7/26°
- BXV — the code adds the hub diameter, 150 or 250 mm, e.g. BXV-PP 450-5/25°
- F300 / F400 — smoke exhaust versions
- Reversible supply and exhaust fans on request
- Explosion-proof motors (the manufacturer does not publish ATEX zone data — we confirm it at selection)
- Marine motors
Accessories
- Inlet cone with guard
- Outlet guard
- Flexible connectors and counter flanges
- Spring or rubber anti-vibration mounts, mounting feet
- Silencers
- Isolator switch
Manufacturer documentation is available on request — name the series in the enquiry form.
