- Fan Type
Fan shall be rooftop centrifugal exhaust type with aluminum backward inclined centrifugal wheel. The inlet Venturi shall have round curved section to smoothly transit the air to the wheel cone. The wheel shall be statically and dynamically balanced to Level G2.5 as per AMCA204 standard.
- Quality Standards
The fan shall be tested in accordance with AMCA Standard 210 and 300. The manufacturer must own the production license for industrial products and ISO9001 quality system authentication.
- Fan Housing
Fan housing shall be square, constructed of galvanized steel panel (option: epoxy powder coated). Motor supporting structure shall be strong enough to avoid resonance during operation. A safety mesh shall be installed in the indoor side to prevent debris into the fan. Outside is with 45 degree weatherhood and stainless steel birdscreen to prevent rainwater and birds into workshop.
- Explosion-proof Structure (Only for explosion-proof type)
Fan shall conform to Spark C explosion-proof structure according to AMCA99 Standard. Explosion resistant sidewall fan: Type (size: 250~550) is aluminum wheel, inlet venturi is per aluminum. Type (size: 600~900) is steel wheel, inlet venturi is aluminum, The motor shall adopt explosion-proof type. The whole fan should own CNEX certification and the manufacturer must own the production license for anti-explosion electric products.
External rotor motor shall be IP44, internal rotor motor shall be IP54, insulation class F, Motor shall be inside the airstream for cooling. The wiring location of motor depends on customer and the length of outer wiring will be at least half a meter.
Permanently fixed aluminum nameplate shall be fixed on fan body clearly display fan mark, product model and serial number (i.e.: unique ID for each fan), so that the customer can use this number to find out the parts used.
- Acceptable Manufacturers
Qualified suppliers shall have an AAA credit rating. Providing INFINAIR or similar products, with their design based on WEX models of INFINAIR.