What is an explosion proof fan?

Explosion proof fans are equipped with single speed explosion proof motors and aluminum blades so sparks cannot occur if a metal object obstructs the blade path. Explosion proof fans have the same quality welded steel box housing and heavy gauge welded guard as the standard fans. These fans should be used to ventilate hazardous areas.

What is explosion-proof wiring?

This is the principle behind explosion-proof wiring. Even if the circuit did ignite a quantity of hazardous mixture, the wiring container, can “contain” the resulting explosion and cool any escaping hot gasses so that they would be incapable of igniting the hazardous mixture outside of the explosion-proof container.

How do I wire a 2 speed fan?

Make electrical connections in motor connection box as per the motor nameplate. Two speed fans require a two speed control or 3 position toggle switch to change from high/ low/off. See wiring diagram with control for 2 speed wiring instructions. ProPer motor coolIng and to Prevent motor faIlure. All fans are direct drive.

What are the requirements for installation and maintenance of a fan?

Installation, inspection and maintenance in accordance with EN 60079-14/-17 are considered to meet the require-ments. Fan must be installed and protected against foreign objects that come in contact with moving parts and may cause sparks. No moving parts should be accessible after installation (EN ISO 13857).

What temperature should a dkex/KTEX fan be installed in?

Ambient temperature and the conveyed air temperature should be between -20°C and +40°C. DKEX/KTEX are intended for continuous operation within the specified temperature range. The fan can be mounted in any direction. Install DKEX/KTEX in the correct air direction (arrow on housing).