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The mobile small dust extractor for flexible use in the cleanroom.

HET dynamic

The mobile small dust extractor

The HETcompact is our mobile small dust extractor. It meets all the basic properties required for use in the pharmaceutical and chemical industries (e.g. in cleanrooms).

For example, it can be used for toxic and alveolar dusts. The filtered clean gas is returned to the room air. The filter is changed without touching dust with the help of our Safe-Change system.

The use of the HETcompact is of course also possible outside the pharmaceutical and chemical industry.

HETcompact

Advantages

  • Up to three HEPA HEPA filter stages in one system
  • Safe containment up to OEB 4
  • GMP compliant design
  • Mobile, easily movable small dust extractor
  • Explosion-proof housing with safe grounding
  • Cleaning system for backwashing the primary filter by means of cleaning cylinder
  • Plant in welded version
  • Conductive equipment for almost all ATEX categories
  • DEHS measuring points for qualification of the safety filter stage

Leak test

Dust-tightness: Due to the closed design and operation under negative pressure, it is ensured that no dust particles can leave the filter housing.

Gas tightness: A defined leakage of <1% of the housing volume is guaranteed within 6 minutes, based on a test pressure of 2,000 Pa.

Tightness tested

Highest containment level due to safe filter replacement

Circumferential double groove profiles on the filter openings for filter change using Safe Change technology. (bag-in-bag-out)

The filter bags are designed as foil bags made of polyethylene with gridded black strips consisting of polyethylene and carbon powder. This gives the filter bag dissipative properties and makes it suitable for combustible dusts and gases.

In addition, the foil bag is provided with welded-in side pockets to facilitate handling during filter change and to shorten the process time.

The rubber rings for fastening the bag in the double groove profile are designed as hollow cord rings, which ensures that the bag sits firmly and securely in the groove profile of the change frame. A tab on the rubber ring ensures easier handling during filter change.

Highest containment level due to safe filter replacement

Highest explosion protection

Ex100

The filter system is electrically conductive and does not generate its own ignition sources.

Ex200

Due to its explosion pressure shock resistant design, the filter system offers constructive explosion protection based on the principle of partial filling. The explosion pressure is relieved internally via the filter cells, which also serve as an effective flame arrester.

Dusts with a specific pmax of 10 bar can be handled, as the pressure surge is reduced internally to 1 bar. Due to this internal pressure relief, the system does not suffer any permanent damage even in the event of an explosion.

The offered filter unit is designed according to ATEX Directive 2014/34/EU and approved and certified by FSA Mannheim, notified body 0558.

In the event of an explosion, no permanent deformation occurs according to the explosion test, even with dusts up to a Kst value of 590 bar*m/s.

From a Kst value of 300 bar*m/s, a blocking slide valve for the primary filter cell and a flap monitoring system must be provided for this purpose.

After internal cleaning, filter replacement and functional testing, the filter system can continue to be operated without any further measures.

In the event of an explosion, no permanent deformation occurs according to the explosion test, even with dusts up to a Kst value of 590 bar*m/s.

From a Kst value of 300 bar*m/s, a blocking slide valve for the primary filter cell and a flap monitoring system must be provided for this purpose.

After internal cleaning, filter replacement and functional testing, the filter system can continue to be operated without any further measures.

Special Features:

  • In the event of a dust explosion, the filter housing is not damaged
  • The special arrangement of the filter cells acts as an effective flame arrester to prevent ignition on the clean gas side
  • Explosion pressure and heat are dissipated via the filter cells.

No external pressure relief or explosion suppression measures are required, which is a huge cost advantage.

Highest explosion protection

Technische Information
FilterklasseH13/H14 nach DIN EN 1822
Volumenstrom200 – 500 m³/h
Betriebsmodusdiskontinuierlich
Rohgasstaubbeladung5 – 4.500 mg/m³
Reingasstaubgehalt< 0,0001 mg/m³
Druckverlust der Anlage300 – 2.500 Pa
GehäuseausführungEdelstahl
 Technical data
Technical data
Filtration

Filtration

Containment

Explosion protection

Filter system for low dust loads

HEPA filter for highest demands

The cleanable filter system

Filter system for low dust loads

HEPA filter for highest demands

The cleanable filter system

Planning. Development. Assembly.

From one source

Security

is our mission

You can find out what makes us tick as a company here.

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