The IV 100 / 55 H B1 is a very robust Industrial Vacuum Cleaner, which addresses the needs of different target groups. The vacuum can be easily moved around, on flat surfaces by one person. This vacuum was especially developed to handle dusts of the dust explosion classes ST 1, ST 2 and ST 3 in the zone 22. The construction type and the various accessories available make it practical for different cleaning tasks. The model is recommended to be used for continuous duty (3-shift-operation) because of the motor type embedded in it. The side channel turbine creates a high suction power and is protected by a safety valve against motor overheating. Due to the type of construction and the size of the machine this vacuum cleaner is usually sold for one special site, for one or two users, and remains usually for a longer period on one working site. The "easy-empty" drop bin fitted with wheels facilitates the transportation of the vacuumed material. The cyclone pre-separator is a standard feature and it pre-separates large amounts of dust before they can get into the filter area. As a result, the life-time of the filter is considerably expanded. A main filter with a large filter surface and a high dust absorption rate (class M approved with included H Filter) ensures long operating periods with no interruption. The external, manual filter cleaning device guarantees long operating periods and ensures a long life-time of the filter. On the storage area, positioned above the motor, can be placed the nozzles and tools. This storage area is also a convenient cable storage during work and transport duties.