VACUUM CLEANERS FOR SURFACE TREATMENT

The choice depends entirely on the size of the machine and the power supply. For a medium-sized grinder operating on a 230 V single-phase line, the FEVI 350 ICLEAN model is suitable. If prolonged industrial use is required, the three-phase FEVI TDC30 ICLEAN unit is preferred, while for large industrial floor machines and very long piping, the heavy-duty FEVI HDC 355 ICLEAN series must be adopted.

Cement dust is extremely fine and prone to caking, and therefore requires a unit equipped with advanced cartridges and automatic cleaning. The compact FEVI 220 ICLEAN model responds optimally to small operations or portable grinders, FEVI 350 ICLEAN is ideal for constant single-phase loads, while the TDC30 or HDC 355 ICLEAN models are developed for heavy and prolonged three-phase use.

The presence and exact percentage of silica depend on the geological composition of the aggregates used in the mixture. However, dry processing of concrete, mortars and granite frequently generates a respirable crystalline-silica fraction hazardous to the pulmonary alveoli (silicosis risk), which mandates the use of closed extraction systems and Class M or HEPA certified filters.

A scarifier removes deep layers, producing a mixed flow of fine dust and heavy solid fragments. It requires the high vacuum pressure of three-phase FEVI TDC30 ICLEAN or FEVI HDC 355 ICLEAN (S Configuration) units. In the presence of large volumes of waste, an in-line cyclonic pre-separator must be installed to protect the primary filters and prevent the drum from saturating immediately.

For professional shot-blasting machines and large flooring projects, the power of the FEVI HDC 355 ICLEAN range is preferred, selecting the P configuration (high airflow for wide shrouds) or the S configuration (high vacuum pressure for long hoses) according to the manufacturer’s requirements. The industrial vacuum cleaner must maintain the correct vacuum pressure to separate the spent fine dust from the heavy metal shot intended for recirculation.

FEVI 350 ICLEAN is a 230 V single-phase unit using three bypass motors, ideal for maximum flexibility and mobility on civil and construction sites. FEVI TDC30 ICLEAN is a 400 V three-phase unit coupled to a side-channel blower, specifically designed for prolonged industrial use over long shifts and stable permanent connections.

The P (Airflow) configuration sets the two-stage blower to move a high volume of air (520 m³/h), making it ideal for very wide shrouds, large hose diameters and low pressure losses. The S (Vacuum) configuration arranges the blower in series to develop extreme extraction force (up to 530 mBar), specifically designed to overcome the resistance of very long flexible hoses or significant vertical height differences.

The Longopac continuous-bag system is recommended when the main contaminant is perfectly dry, extremely fine and volatile dust (e.g., fillers or cement) and the operator is required to bag, seal and cut the collected material directly at variable heights, eliminating hazardous transfer operations from a rigid drum on the floor.

The use of an intermediate cyclonic pre-separator is recommended when the operating machine generates large hourly quantities of dust, granules or abrasive flakes that would fill conventional drums within minutes, or when one wishes to intercept the heavy solid fraction before it attacks the machine's cartridge filters.

No. A HEPA filter provides maximum mechanical capture efficiency for hazardous respirable microparticles, but it is only one segment of safety. The absolute stage must always be supported upstream by correct sizing of the extraction shrouds, blower airflow, sealing gaskets and rigorous protected-replacement procedures.

No. The ICLEAN system performs excellent and effective continuous cyclic regeneration of the cartridges through mechanical micro-vibrations during operation, maintaining stable airflow and extraction force. However, this does not eliminate routine maintenance: the filters must be periodically checked, washed or replaced in accordance with the workshop schedule.

The industrial vacuum cleaner operates by developing high operating vacuum pressure to lift, transport and collect solids deposited on floors or convey waste from tools through narrow flexible hoses. The dust collector operates at high airflow and low vacuum pressure to move and wash large volumes of air, capturing airborne dust clouds through hoods or extraction arms.

It is highly recommended to avoid random mixing and mixed use of the machine without a rigorous internal procedure for cleaning and filter checking. Mineral dust and organic wood dust present completely different physical behaviours and flammability risks; their mixing can compromise the facility’s ATEX safety assessments.

An ATEX configuration becomes mandatory only when the department’s risk assessment identifies the formation and presence of potentially explosive atmospheres in air (e.g., intensive sanding of hardwoods, polymer resins or grinding of aluminium and magnesium that generates fine volatile dust). The machine, group marking, hoses and conductive accessories must comply with the installation zone.

No, no machine can eliminate dust on its own in an isolated manner. The industrial vacuum cleaner is the heart of the suppression system, but the total result in terms of air salubrity depends on the perfect seal and closure of the operating shroud against the surface, the correct diameter of the fittings, the linear length of the abrasion-resistant hoses and compliance with scheduled maintenance.