Concrete dust extractors: why they match the grinder

There are two reasons. One is capacity: DC 6000 is an industrial dust collector matched to the high-productivity grinders PG 820, PG 680 and PG 530 3-phase, while DC 1400 is ideal for small jobs where the collector needs to be easy to move. The other is that quartz dust from concrete must not escape into the room at all.

Which goes with which

• PG 280 — DC 1400
• PG 450 — DC 3000
• PG 400 — DC 3000
• PG 530 3-phase, PG 680, PG 680 RC, PG 820 and PG 820 RC — DC 6000

The three in the catalogue

DC 3000 is listed in the data sheet as compatible with both PG 400 and PG 450.

• DC 1400 — 1-phase, hose 4 + 2.5 m, washable polyester filter
• DC 3000 — 1-phase 230 V, 2.4 kW, 27.5 kg, 10 m hose
• DC 6000 — 3-phase 400 V, 5.75 kW, 15.4 A, 700 m³/h airflow, 420 mbar vacuum, suction inlet 75 mm, 305 kg

Airflow and vacuum are two different things

DC 6000 is rated at both 700 m³/h and 420 mbar, and the two figures do different jobs. The airflow is how much air the extractor moves per hour. The vacuum is how hard it pulls, in other words whether it can draw the dust through the whole hose and through a filter that is starting to clog.

Husqvarna describes DC 6000 as designed for demanding industrial applications, where both high suction power and a large airflow are needed to remove airborne dust. That is why comparing just one of the figures is not enough.

Add up the current draw

The grinder and the extractor run at the same time. PG 680 draws 27 A and DC 6000 draws 15.4 A, which takes you to over 40 A in the same place. With the smaller machines it is simpler: PG 280 at 13.4 A and a DC 1400 on 1-phase.

The hose length determines where the extractor can stand

DC 1400 comes with 4 + 2.5 m of hose, DC 3000 with 10 m. This determines whether the extractor can stay put while you grind your way across the room, or whether it has to be moved all the time. On large areas, it makes a real difference to the time taken.

The filter is an operating cost

DC 1400 is specified with a washable polyester filter. A washable filter is worth knowing about when the machine will be running for many hours in concrete dust.

The specifications for PG 680 and PG 820 also list T 7500 and T 10000 as compatible dust extractors, in addition to the recommended DC 6000.