Professional vacuum unit on carriage
The 525M has the same specifications as the 521M, but is built on a carriage for fast traffic. Simple (dis-)connecting to a towing car, the 525M is quickly deployable.
The design is focussed on a long life. The indirectly driven turbine with V-belts protect the engine for sudden blockings. Turbine and housing are made of durable materials. Also the 525M will go for years.