Delfin MTL 452 ACD
- Mid-sized production areas with combustible dust outside ATEX classification
- Food production with larger dust volumes and longer running times
- Powder-coating service areas with continuous dust generation
- Bakeries and mills with continuous flour-dust collection
- Metal-powder handling outside ATEX-classified booths
- IEC 60335-2-69 Annex AA (ACD)
- Low Voltage Directive 2014/35/EU
- EMC Directive 2014/30/EU
Delfin MTL 452 ACD
The MTL 452 ACD is the mid-size ACD model with a 45-litre container, two bypass motors in parallel (2.2 kW) and a large star/pocket filter (20,000 cm²) with manual cleaning. The combination delivers high airflow (360 m³/h) without requiring three-phase power, while the filter handles larger dust volumes between emptyings. The internal construction follows IEC 60335-2-69 Annex AA, so the dust container is treated as Zone 20 in non-ATEX-classified environments.
Applications
- Mid-sized production areas with combustible dust outside ATEX classification
- Food production with larger dust volumes and longer running times
- Powder-coating service areas with continuous dust generation
- Bakeries and mills with continuous flour-dust collection
- Metal-powder handling outside ATEX-classified booths
Technical specifications
| ATEX marking | II 1/- D Ex h tb IIIC T80°C (Internal) Da/- -- ACD EX 1/-D (intern Zone 20, ekstern ikke-ATEX) |
|---|---|
| Internal / external zone | 20 / ikke-ATEX |
| Motor type | 2 bypass-motorer i parallel (2 × 1,1 kW) |
| Duty cycle | Periodic |
| Airflow | 360 m³/h |
| Vacuum | 245 mbar (2500 mmH₂O) |
| Container | 45 L |
| Sound pressure | 74 dB(A) |
| Filter class | H class |
| Filter type | HEPA H14 (EN 1822), 99,995 % MPPS, 20.500 cm² |
| Primary filter | Stjerne/taskefilter polyester ANT M-klasse antistatisk, 20.000 cm², Ø 420 mm -- manuel rystning |
| Collection system | Plastic bag |
| Material | AISI 304 (inox) |
| IP class | IP64 |
| Power | 2.2 kW |
| Current | 10 A |
| Voltage | 230 V / 50 Hz |
| Inlet | Ø 80 mm |
| Dimensions (L × W × H) | 550 x 690 x 1400 mm |
| Weight | 56 kg |
Questions and answers
What is the star/pocket filter, and how is it cleaned?
A star/pocket filter is a primary filter with a large total surface area (20,000 cm², Ø 420 mm) in polyester with antistatic M-class treatment. It is cleaned manually by shaking the filter so the dust falls into the container -- a simple, robust solution with no compressed air. Air load is 180 m³/m²/h, higher than on the larger LP models and matching a more periodic duty cycle.
Can the MTL 452 ACD be used in an ATEX-classified zone?
No. The MTL 452 ACD is certified to IEC 60335-2-69 Annex AA and intended only for non-ATEX-classified areas. For classified zones, choose a model from our ATEX range -- for example the corresponding MTL 451 1/2D, certified for Zone 21.
What is the difference between the MTL 452 ACD and MTL 202 ACD?
Both have two bypass motors in parallel (2.2 kW, 360 m³/h) and the same ACD certification. The MTL 202 ACD has a 20-litre container, cartridge filter with Dustop, and weighs 35 kg -- suited to compact workshops. The MTL 452 ACD has a 45-litre container, star/pocket filter with manual cleaning, and weighs 56 kg -- designed for longer duty and larger dust volumes.
Why is the internal part called Zone 20 when the surrounding area is non-ATEX?
Inside the dust container, a continuous explosive dust atmosphere exists by definition during operation -- that qualifies it as Zone 20. IEC 60335-2-69 Annex AA requires the vacuum's internals to safely handle this atmosphere even when the surrounding environment is non-ATEX.
What filter class does it have?
Filter class H with an absolute HEPA H14 filter per EN 1822 (99.995 % MPPS), 20,500 cm². The primary filter is a polyester ANT M-class antistatic star/pocket filter of 20,000 cm² (Ø 420 mm) with manual shaking.
How is the dust collected?
The MTL 452 ACD collects dust directly in the 45-litre container, which is emptied manually. The model does not have a Longopac system as standard. For closed bag handling without contact -- for example in pharmaceutical production -- choose the MTL 202 ACD LP (20 L container + Longopac) or a similar LP variant.