Explosion Resistant Drying Ovens

Safe and reliable drying. Avoid explosion Hazards. Meets ATEX Safety Directives

Our small explosion resistant drying ovens are ideal for use in manufacturing and laboratories.  The VFT drying ovens provide safety concept of primary and secondary explosion protection measures for safe heat treatment processes in areas of the chemical, pharmaceutical, paint and basic material industry. The oven is electrically heated and designed using fresh air concept.

Votsch Oven fresh air drying cabinets VFT operate on the principle of exclusive fresh air supply. Due to the inherently safe design, explosive mixtures do not come into contact with potential ignition sources and are safely discharged under supervision. Very large quantities of solvents can be safely dried. The usable space is defined as a Zone 1 area, where it is expected that an explosive atmosphere consisting of a mixture of air with flammable substances in the form of gas, vapor, or mist may occur during normal operation. The devices have a type examination certificate TÜV 16 The interior is explosion-resistant, designed according to temperature classes T1, T2, T3, and T4, and complies with EN 60079-0. Materials in explosion groups II A and II B can be utilizATEX 7810 X and therefore do not require individual approval and can be put into operation directly. Its small external dimensions allow it to be installed in laboratory, technical, and production areas. Wherever there is a high demand for solvent drying.

Reproducible processes

• Homogeneous temperature distribution throughout the usable space for uniform drying
• High fresh air volumes of 2m³/min. for safe processing/drying of large quantities of solvents
• PID temperature program controller with self-optimization of control parameters
• A temperature program storable in the controller for repeat processes

Safe processes

• Explosion-resistant design for safe processing of large quantities of solvents
• Permanent monitoring of the fresh and exhaust air volume flow ensures safe flushing of the interior
• Overpressure encapsulated control cabinet with low compressed air requirement in normal operation of 20 l/min.
• Automatic emergency flushing of the heating and control cabinet in case of power failure or malfunction
• Temperature limiter (TB) for device protection
• Temperature selection limiter (TWB) for product protection

The interior is explosion-resistant, designed according to temperature classes T1, T2, T3, and T4, and complies with EN 60079-0. Materials in explosion groups II A and II B can be utilized. 

The outer housing complies with category 3G and is suitable for installation in Zone 2. An area where a hazardous explosive atmosphere as a mixture of air and flammable gases, vapors, or mists normally does not occur or only occurs briefly during normal operation.