Found in commercial laundries which can be a part of a hotel complex or a factory. Of all air handling systems, laundries are the most fire hazardous. This is because they pick up lint and fluff via the large driers.
Blockages in these systems are common. Over a period of time the material being exhausted can build up in the duct. Even though the fan works harder, it is not as efficient and the blockage becomes worse.
Unfortunately, in most cases the fan will break down causing major problems. A simple regular cleaning program will eliminate this problem. Not only will the system be cleaned but you will be kept informed of any problems that may be occurring in the system so that they can be addressed before any costly repairs or loss of time.