Type of dirt/debris

Typical debris include dust, sand, leaves, dry chemicals, dirt, cans and drink cups, packing materials, etc. The type and volume of debris affects the choice of sweeper, brooms and the capacity of dirt containers, as well as dust filters and dumping ability.

The filtering system plays a very important role, as it allows air vacuumed-up by the fan to flow through it and retain the dust. The size of dust particles is important as according to the filtering degree of the filters, measured in microns, dust may be retained or may not be retained by the filter. A filter whose filtering degree is 12\15mc will retain all particles whose size is larger than 12\15mc, but not smaller sized ones. Once filters are shaken, the dust will be dropped directly into the dirt container.

For the picking up of particularly fine dust, choose a sweeper equipped with Polyester Bag Filters. Polyester bag filters are made out of polyester, whose filtering degree is approximately 3mc. The advantage of this type of filters is that they are antistatic, have a very long lasting life, a better filtering degree, and are easy to replace. Remember that water may damage the filters, therefore we recommend to turn-off the vacuum-fan when sweeping on wet areas.

Power source

Sweepers are available with engines powered by petrol, LPG, diesel, or are battery driven. Petrol and diesel powered machines are usually more suitable for outdoor applications, and battery or LPG powered units are better suited for indoor use because of noise and air-quality concern. As a matter of facts, LPG is now being used to fuel large size sweepers all over the world; providing all the advantages of diesel or petrol coupled with those of electricity. LPG is the most versatile fuel for sweepers as it is suitable for use in all industries. Thanks to a sophisticated engine management system and regulated catalytic converter, high output is delivered along with low emissions and low fuel consumption.

Noise levels have also been lowered – adding to the operator’s level of comfort. For the operating company, the very long service interval will bring welcome reductions in maintenance costs and downtime.

Inclines to be swept or passed through

Another important issue is the machine’s climbing ability. A parking garage, for example, would require a sweeper with a powerful enough drive to best handle the inclines. Enough consideration must also be given to the difference in levels between adjoini
ng areas and the inclines that the sweeper will have to sweep or pass through. Areas with dead-end aisles or tight corners will need a sweeper with excellent manoeuvrability, and that will often affect the overall size of the unit.