FAQ of industrial exhaust fan greenhouse exhaust fan (updated to 2022)

Yes, the majority of our explosion proof exhaust fans are at least rated for Class I group D and Class II groups F & G, which covers certain flammable gases, combustible vapors, and combustible dusts.
We can customize explosion-proof motors for industrial exhaust fans of 900mm\1060mm\1220mm\1380mm size. Specifically-rated motors are available on request. 

There is a formula that provides guidelines for how much air change per hour certain types of factories/workshops are needed. You can also contact us directly to provide you with a more accurate ventilation solution.

The noise from the exhaust fans is not noticeable in an industrial or commercial
environment. However, if you do have specific noise restrictions,
we have options that can help. We can provide you with frequency converters for factory ventilation fans to reduce noise and control wind speed.

Choosing between a direct- or belt-driven fan can come down to what the application calls for, or just personal preference. Direct drive fans require less maintenance, but are louder.
On the flip side, belt-driven fans have more moving parts and need more maintenance, but are quieter. Depending on what is in the air being exhausted, a belt-driven fan may be required to keep the motor out of the airstream.
Direct drive fans are often used in high-altitude or high-humidity environments, which are characterized by high maintenance difficulties.

Our fans can operate in ambient temperatures up to 50℃ (122°F). For Class F explosion-proof motors, our industrial fans can operate at 155°C (311°F).
However, if you do have special temperature requirements, we have other options that can help.

Our fans should last a minimum of 10 years, although we’ve had past customers requesting replacement parts after longer spans of time. 
To ensure trouble free operation and long life for a fan assembly, a preventative maintenance program that includes regularly scheduled inspections and lubrication is recommended.  The frequency of inspection and lubrication depends upon the fan, its components and operating conditions.

Typically, industrial fans are often installed on walls or windows. First of all, you need to reserve enough holes in the walls or windows.
Then, place the fan inside the mounting hole. Finally, use a triangular bracket and angle iron to fix the fan to the wall.

In greenhouses, fans and evaporative cooling pads need to be installed on opposite sides of the space.
Using the suction power of the greenhouse exhaust fan, through the evaporation principle of water cooling pad, the outdoor hot air becomes the indoor cold air to achieve the cooling effect.
Under normal circumstances, the height of the evaporative cooling pad is 2000mm or 1800mm, and the thickness is 150mm or 100mm.
You could contact us to recommend specific specifications and quantities for your greenhouse.