Push-pull system involves duct-work and in combination with the right filter unit and fan, welding fumes can be controlled very effectively. It has the additional advantage that expensively heated air stays within the workshop and occupational exposure levels are kept within acceptable standards. The result is cleaner, healthier work environment and at the same time saving from energy costs. Basically, welding fumes rise due to heat. At a certain level - due to cooling process - the same temperature level will be reached and a fume layer arises. The push-pull system moves this layer in a controlled way to a particular height (usually between four and six meters) where the air gets filtered and re-circulated. This way the smaller particles cannot cool down and return to work level, which means less fine dust on the work floor.
CENTRALISED EXTRACTION WITH MULTIPLE ARMS
Plymovent offers wide range of extraction arms for at-source capture of welding fumes and grinding dust. Different arm lengths and diameters specific to certain processes and applications can be integrated to a common duct. By fitting the right fan, filter, control box and arms to one system, optimum extraction is guaranteed. Various settings are possible depending on the local conditions such as flexibility, energy, users’ ease and noise level.