Prepared by the FEVI Technical Department | Published 9 JULY 2026 | Last revised: 9 JULY 2026
The ATEX designation does not identify a universal vacuum cleaner. It refers to a set of requirements and markings that must be considered in relation to the classification of the working environment, the type of potentially explosive atmosphere and the way in which the material enters, passes through and is collected inside the machine. For this reason, two vacuum cleaners described as ATEX may be intended for different operating conditions and are not interchangeable simply because they share the same commercial label.
Correct selection begins before consulting a catalogue. The zone classification assigned by the person responsible for safety must be known, together with the nature of the substance, its physical form, the information contained in the safety data sheet and any available explosibility data, the quantity to be vacuumed and the frequency of the operating cycle. Only then is it possible to verify the equipment marking, filtration configuration, accessories and operating conditions permitted by the manufacturer.
Why the question “Do I need an ATEX vacuum cleaner?” is incomplete
A material may be present as granules, swarf, deposited dust or an airborne cloud. The risk changes according to particle size, moisture, concentration, temperature, possible ignition sources and process conditions. Even materials that do not appear readily combustible in bulk form may behave differently when finely divided. The vacuum-cleaner configuration should therefore not be determined from the name of the processed product alone.
The same operation may also generate different scenarios: dry residues on the floor, dust extracted directly from a machine, hot material, a mixture containing liquid or the simultaneous presence of gases and dust. Each scenario requires its own assessment. The expression “explosion-proof vacuum cleaner”, often used in online searches, does not replace a readable marking and does not automatically define every component of the system.
The range of FEVI ATEX industrial vacuum cleaners includes equipment with different configurations. The category page provides a starting point for comparing models, but compatibility must be established from the specific documentation and application data.
FIRST PRINCIPLE: do not independently select the vacuum cleaner zone based on how frequently dust is visibly present. Area classification is the outcome of the workplace risk assessment and must be provided by the competent person.
Environmental zone and machine marking: two pieces of information that must be matched
Area classification describes where and with what probability an explosive atmosphere may form. Equipment marking, on the other hand, communicates the intended application and the level of protection provided by the manufacturer. The decisive step is to verify that the two are compatible, without isolating a single number or letter from the rest of the marking.
For dust, zones 20, 21 and 22 are commonly encountered; for gases, vapours and mists, zones 0, 1 and 2. This distinction does not permit shortcuts: a machine intended for a specific external zone may have different internal conditions and limitations stated in the manual. Equipment group, category, type of protection, substance group, maximum surface temperature and equipment protection level must also be considered together.
The person responsible for safety provides the classification; the supplier verifies whether a particular configuration is consistent with it. If the workplace has not yet been classified or the substance has not been characterised, any quotation may necessarily remain preliminary. Purchasing first and classifying afterwards creates the risk of having to replace the machine, hoses or accessories.
| Information | Who provides it | What it allows you to verify |
|---|---|---|
| Zone classification and explosion-protection documentation | Employer / competent responsible person | Required equipment suitability at the point of use |
| Safety data sheet and substance data | Material supplier / laboratory / process owner | Hazards, physical form, compatibility and missing information requiring further investigation |
| Vacuum-cleaner marking and manual | Manufacturer / supplier | Permitted conditions, limitations, maintenance and certified configuration |
| Layout and operating method | User | Lengths, accessories, pick-up point, quantity and cycle duration |
Material data that helps avoid an approximate selection
The safety data sheet is the first document that should be provided, but it may not contain all the parameters required to assess the behaviour of the dust. If the process changes particle size, moisture or composition, data relating to the incoming product may not describe the residue actually being vacuumed. It is also useful to indicate how the dust is generated and, where available, provide laboratory results relating to representative material.
Parameters such as Kst, Pmax, ignition temperature or minimum ignition energy should not be converted into do-it-yourself thresholds. These are specialist data that must be interpreted in the context of the risk assessment, test conditions and the prevention and protection measures adopted. The absence of a value does not mean the absence of a hazard.
- Commercial name, composition and up-to-date safety data sheet.
- Form of the residue: dust, granule, swarf, fibre or heterogeneous mixture.
- Actual particle size or indicative range, including the finest fraction produced by the process.
- Moisture, temperature and possible presence of solvents, oils or other substances.
- Available explosibility data and the laboratory that determined them.
- Quantity per cycle and per shift, vacuuming frequency and emptying method.
- Possibility of vacuuming incandescent particles, sparks, hot sources or incompatible materials.
The process matters as much as the dust
A vacuum cleaner used for a few minutes to remove deposits near a machine performs a different task from a unit continuously connected to a production source. In the first case, manoeuvrability, useful vacuum and accessories may be the main priorities; in the second, airflow, flow stability, duty cycle, filter area, filter-cleaning system and discharge method become central.
The pick-up point must be described. A long, small-diameter hose, numerous bends, an open hood or a network serving multiple users introduce pressure losses and alter the available performance. It is not enough to compare maximum free-air airflow or vacuum values: the operating point of the complete system must be checked.
Emptying is also part of the process. Opening the container, transferring the material or replacing a bag can generate dust dispersion and requires a procedure consistent with the assessed risk. Collection capacity, residue weight, disposal frequency and protective equipment must be defined before purchase.
Filters, electrical continuity and accessories: the configuration must be considered as a whole
Filter selection depends on particle size, loading, dust behaviour, required efficiency and the cleaning method. Higher nominal efficiency does not automatically solve the risk of clogging: if the dust rapidly creates a resistant cake, airflow can fall. Filter area, face velocity and cleaning system must be consistent with the duty cycle.
In ATEX applications, compatibility does not stop at the machine body. Hoses, fittings, lances, brushes, collection systems and components installed in the airflow path must belong to the intended configuration. Replacing an accessory with a generic component may alter electrical continuity, materials, geometry or the conditions declared by the manufacturer.
Earthing and equipotential bonding are measures that must be designed and verified, not generic formulas to be quoted without context. They must apply to the complete installation and form part of ignition-source management. The equipment manual defines permitted inspections, maintenance and spare parts; any modification must be formally assessed.
Single-phase, three-phase or pneumatic: the choice depends on the duty
A compact single-phase vacuum cleaner may be suitable for localised operations and movement between departments, provided the zone, material and duty duration are compatible. A three-phase unit is normally considered when extended operation, greater operating stability or connection to a fixed workstation is required. Pneumatic solutions may be appropriate in particular environments, but require adequate compressed air and an assessment of energy use and installation requirements.
The model should therefore not be selected by automatically associating “small” with single-phase and “large” with three-phase. Material bulk density, distance, hose diameter, quantity and type of pick-up can completely change the requirement. It is useful to prepare one application data sheet and compare the alternatives under the same operating scenario.
For compact use with dry dust under conditions consistent with its technical documentation, the FEVI BSL 120 BASIC ATEX 22 can provide an initial reference point. For three-phase requirements and compatible materials including solids or liquids, the assessment may extend to the FEVI WT 75 BASIC ATEX. These are examples of different machine architectures, not substitutes for verification of the zone and process.
An eight-step method for requesting a comparable quotation
A complete request reduces generic quotations and makes any conditions that still need to be verified transparent. The following workflow can be used as an internal checklist before contacting the supplier.
- Attach the area classification and indicate the exact point where the vacuum cleaner will operate.
- Send the safety data sheet and all available information about the dust actually generated by the process.
- Describe the residues, quantity, temperature, moisture and any possible contaminants or foreign bodies.
- Indicate whether the material is collected from a surface, directly from a machine or from an airborne dust cloud.
- Provide the length and diameter of the line, number of bends, accessories and simultaneous users.
- Define minutes or hours of operation, frequency per shift and acceptable maintenance and emptying times.
- Request the complete marking, operating limitations, accessory configuration and maintenance procedure.
- Have the solution approved within the company's risk-assessment process before commissioning.
The most common selection mistakes
The first mistake is using ATEX as a synonym for “safer” without specifying the zone and material. The second is assuming that an antistatic filter automatically turns an ordinary vacuum cleaner into an ATEX vacuum cleaner. The third is comparing models solely on motor power while ignoring the operating point. Other mistakes include using accessories that are not part of the approved configuration, vacuuming hot or incompatible materials and modifying the machine after purchase.
It is also risky to infer the classification from the experience of another company. Similar processes may generate dust with different particle sizes and compositions; layout, ventilation and the frequency with which an explosive atmosphere forms may also differ. A solution adopted elsewhere is, at most, a reference that must be reassessed for the new application.
Operator training must also not be overlooked. Even a correctly selected machine may be used outside its permitted conditions, emptied incorrectly or maintained using incompatible spare parts. Procedures, inspections and recording of maintenance activities complete the technical investment.
Frequently asked questions
What does ATEX mean for an industrial vacuum cleaner?
It means that the equipment has been designed and marked for specific conditions associated with potentially explosive atmospheres. The ATEX designation alone does not indicate where it may be used: the complete marking, manual and actual configuration must be checked.
Does an antistatic filter turn a standard vacuum cleaner into an ATEX vacuum cleaner?
No. The filter is only one component. Compliance concerns the design, materials, ignition sources, electrical continuity, marking, documentation and complete configuration defined by the manufacturer.
Can I select the zone by observing how often dust appears?
No. Classification must be carried out within the risk-assessment process by competent persons, taking into account the process, release, ventilation and properties of the substance. The vacuum-cleaner supplier then uses that information to verify the machine configuration.
Is the safety data sheet always sufficient?
It is essential as a starting point, but it may not describe the dust generated by the process or include all relevant explosibility data. Where necessary, additional information and tests on representative samples are required.
Can an ATEX vacuum cleaner also collect liquids?
It depends on the model, marking, liquid and declared operating conditions. Compatibility should not be generalised from a vacuum cleaner designed for dry dust; the presence of vapours or flammable substances changes the scenario.
Is a single-phase or three-phase ATEX vacuum cleaner better?
Neither power supply is universally better. The choice depends on duty duration, mobility, required performance, available electrical supply and the certified configuration for the zone and material.
Do the accessories need to be specific?
They must be accessories permitted for the approved configuration. Hoses, fittings and tools can affect electrical continuity, pressure losses, materials and safety; a generic accessory should not be substituted without verification.
What should I send FEVI for an initial assessment?
Area classification, safety data sheet, dust data, process description, quantity, frequency, temperature, line layout, required accessories and emptying method. The more precise the information, the more useful the comparison between solutions will be.
Does the vacuum cleaner eliminate the explosion risk by itself?
No. It is one measure within a system that includes risk assessment, classification, ignition-source control, ventilation, procedures, training, maintenance and any other protective measures that may be required.
From the word ATEX to a verifiable configuration
Selection becomes faster when all parties work from the same application dossier. Prepare the area classification, material data sheet, process information and layout; FEVI can then indicate which information is complete, which requires further investigation and which product families should be compared.
View the FEVI range of ATEX vacuum cleaners and then contact the FEVI Technical Department, attaching the available information. The final proposal must be verified within the company's risk assessment and used exclusively in accordance with the marking, manual and approved configuration.
Configure your ATEX vacuum cleaner with the FEVI Technical Department
To identify the certified vacuum cleaner most consistent with your operating zones and combustible dusts, send the Technical Department the area classification, the material safety data sheet and details of the production process.
