Screw compressors with a variable frequency drive, Page 3

The smallest pressure penalty in the whole range: eight bar costs only 500 l/min against seven. 24,000 l/min, DN 80 outlet, weight 2,900 kg.

The most expensive pressure tax in the range: ten bar costs 23 % of the air here. It gives 23,000 l/min, but at seven bar that would be 7,000 l/min more.

The first machine in the range to pass thirty cubic metres a minute: 30,000 l/min. It weighs 3,050 kg, stands 2,150 mm tall and needs 25,000 m³/h of ventilation.

The backbone of a large compressor room — 28,000 l/min at eight bar holds the base demand while smaller machines come in at the peaks. The controller sequences up to sixteen.

The way into the EPM range. Fifteen kilowatts gives 3,000 l/min at seven bar, and the inverter takes it down to 750 — a quarter of its output.

The 15 kW at eight bar, 2,900 l/min. The extra bar costs only 100 l/min here, the smallest difference anywhere in the range.

The most powerful machine in the range at ten bar — 27,000 l/min. It never drops below 7,600 l/min, so it wants steady demand or a substantial receiver.

The top of the EPM2 range — 33,500 l/min, over thirty-three cubic metres of air a minute from a single enclosure. It needs 30,000 m³/h, twice what the 55 kW asks.

The highest delivery the range will give at normal industrial pressure: 31,000 l/min. Same frame as the 132 kW, only 100 kg heavier.

Ten bar from the 18.5 kW: 2,900 l/min, exactly what the 15 kW gives at eight. Same enclosure, same 66 dB(A).

The 18.5 kW in the same enclosure as the 15 kW, but 700 l/min stronger: 3,700 l/min at seven bar, still only 480 kg.

Eight bar and 3,500 l/min in a 1,200 × 800 mm enclosure. Regulation from 1,100 l/min, so the machine serves the workshop even on a single air tool.

Ten bar and 3,500 l/min, the last machine in the range with an R 1" outlet. Above it the pipework is sized for R 1½".

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

The most powerful machine in the range’s small enclosure. 4,100 l/min at seven bar, 560 kg — 80 more than the 18.5 kW, but not a centimetre more.

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

The 22 kW at eight bar gives 4,000 l/min. The usual choice where compressed air drives several machines at once.

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

The 30 kW at ten bar gives 5,200 l/min and regulates from 1,300 — down to a quarter of its output, the lowest of any ten-bar machine in the range.

Here the range’s second enclosure begins — 1,300 × 1,000 × 1,370 mm and an R 1½" outlet. The 30 kW gives 6,200 l/min at seven bar, half again what the 22 kW gives.

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

Eight bar from the 30 kW: 6,100 l/min, only 100 less than at seven. Weight 830 kg, noise level 68 dB(A).

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

Ten bar from the 37 kW: 6,500 l/min. The regulation floor here is 2,300 l/min, higher than on the seven-bar version — it wants steadier demand.

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

The 37 kW shares its enclosure with the 45 kW but runs 2 dB(A) quieter. 7,400 l/min at seven bar, 850 kg.

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

Eight bar and 7,350 l/min — only 50 l/min less than at seven, the smallest pressure penalty in the upper half of the range.

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

The most powerful machine in the range at ten bar, 8,000 l/min. It will not drop below 3,000 l/min, so it belongs where air is drawn continuously.

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

The top of the EPM range. Nine and a half thousand litres a minute at seven bar, regulation from 2,500 and ventilation of 9,000 m³/h.

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

The highest delivery in the range at normal industrial pressure: 9,400 l/min. Enclosure 1,530 × 1,100 mm, weight 890 kg, 72 dB(A).

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

The lowest power in the range at the highest pressure. 10,500 l/min at ten bar with regulation down to 2,600 — it copes with a weak night-time demand.

The entry machine of the range, set to seven bar. Up to 12,500 l/min with regulation from 3,500 — the first compressor that asks for a room of its own.

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...

The 55 kW at eight bar, the most common combination in its class. 11,500 l/min at the pressure most industrial pipework is sized for.

Highly economical screw compressor with variable speed control by frequency converter. The compressor is equipped with a direct 1:1 lossless drive and a highly efficient IE4...