SCR-EPM screw compressors

The new range of SCR-EPM compressors has been developed especially with the most efficient compressed air production in industrial plants in mind, using state-of-the-art design features that will provide its user with a significant reduction in the financial costs associated with energy consumption.

SCR-EPM machines are coming to the market at a time when savings are needed.

extreme volumetric performance
liquid-cooled PM engine IE4
lossless direct drive
frequency converters with vector control
ventilation with speed control

SCR screw compressors of the EPM series with variable speed control and power input from 15 to 45 kW
Ordering number	Exit "	Displacement m³/h	Displacement l/min	Pressure bar	Power input kW	Dimensions mm			Weight kg	Noise db(A)
						d	with	in
SCR-15/7EPM	1"	45 - 180	750 - 3000	7	15	1 200	800	1 100	460	66
SCR-15/8EPM		44 - 174	733 - 2900	8
SCR-15/10EPM		35 - 138	583 - 2300	10
SCR-18/7EPM	1"	78 - 222	1300 - 3700	7	18,5	1 200	800	1 100	480	66
SCR-18/8EPM		66 - 210	1100 - 3500	8
SCR-18/10EPM		60 - 174	1000 - 2900	10
SCR-22/7EPM	1"	90 - 246	1500 - 4100	7	22	1 200	800	1 100	560	66
SCR-22/8EPM		84 - 240	1400 - 4000	8
SCR-22/10EPM		66 - 210	1100 - 3500	10
SCR-30/7EPM	1 1/2"	126 - 372	2100 - 6200	7	30	1 300	1 000	1 370	830	68
SCR-30/8EPM		108 - 366	1800 - 6100	8
SCR-30/10EPM		90 - 312	1500 - 5200	10
SCR-37/7EPM	1 1/2"	99 - 444	1650 - 7400	7	110	1 530	1 100	1 370	850	70
SCR-37/8EPM		96 - 441	1600 - 7350	8
SCR-37/10EPM		138 - 390	2300 - 6500	10
SCR-45/7EPM	1 1/2"	150 - 570	2500 - 9500	7	132	1 530	1 100	1 500	890	72
SCR-45/8EPM		144 - 564	2400 - 9400	8
SCR-45/10EPM		180 - 480	3000 - 8000	10
SCO-5L	mineral oil, 5 l canister
SCO-20L	mineral oil, 20 l canister
* volumetric power is measured according to ISO 1217

#ShowMore#

How much is the electricity cost of the compressor ?
It is well known that compressors for compressed air production in the crafts and especially in industry are among the machines with the highest power consumption ever. The current energy market situation, with extreme price increases, should make every compressor user think about whether it is worth investing now in improving the efficiency of compressed air production and purchase new and more efficient compressors, thus ensuring not only cost savings but also the competitiveness of their company and eliminating price increases for their products. Before we look together at how SCR compressors can contribute to solving your electricity bill worries, it is first of all necessary to know how much 1 kWh of electricity costs and the annual volume of energy consumption and to deduce what the potential for savings is.

	By 2021, the aggregate price of electricity including transmission usually ranged in the industry at around 2.50 CZK/kWh. Currently, however, the price of electricity is already at the level of 7 to 10 CZK/kWh and is expected to rise further in the near future.

Annual electricity costs

The table below shows the annual costs in CZK for different appliance wattages, types of operation and electricity prices.

Roční náklady na elektrickou energii V tabulce jsou uvedené roční náklady v Kč pro různé příkony spotřebičů, druhy provozu a ceny elektrické energie.

SCR-EPM compressors for maximum energy savings
The new range of SCR-EPM compressors has been developed with the most efficient compressed air production in industrial plants in mind, using state-of-the-art design features that will provide its user with a significant reduction in the financial costs associated with energy consumption. SCR-EPM machines are coming to the market at a time when savings are needed.


No idling The wide speed control range of the frequency converter prevents unnecessary energy consumption for no-load operation.	Lossless transfer The direct connection between the screw block and the motor has none of the losses found to varying degrees in other types of gears.	No unnecessary pressure The SCR9000 control unit allows you to set only the pressure you need. 1 bar of unnecessarily high pressure corresponds to approximately 7% of the energy.

Elimination of leakage consumption The machine's software allows you to set a precise weekly schedule with scheduled downtime to avoid producing air to cover leaks, e.g. weekend and 4 pressure bands for precise adjustment of the output pressure.	Efficient IE4 motors The latest generation of permanent magnet electric motors reduces energy costs by several percent compared to IE2 standards.	Modern cooling The cooling fan is also continuously controlled for even greater savings. If no need, the fan is not running and does not consume any extra energy.

Design layout of the machine


1 - screw block 2 - electric motor 3 - air filter 4 - suction flap	5 - oil tank 6 - Air and oil cooler 7 - fan 8 - minimum pressure valve	9 - control unit 10 - frequency converter 11 - electrical switchboard

Screw blocks with extreme performance

Thanks to the direct connection of the screw block to the electric motor, the SCR-EPM series compressors operate without any energy loss in the gearbox. Compared to compressors with V-belts, clutch or gearbox, this eliminates any maintenance and, in addition to energy savings, the user also saves on machine servicing. At the heart of every screw compressor are the screw blocks, which are simply huge on the SCR-EPM range, providing such a huge amount of air produced that they can very often replace compressors with engine power ratings one or two orders of magnitude higher. There are very limited compressors on the market that can compete with the SCR-EPM series in terms of FAD performance.

Lossless direct drive of screw compressors

High efficiency is achieved over the entire speed range, contributing to the exceptional energy efficiency of the entire compressor. Thanks to the direct connection of the screw block to the electric motor, the compressors of the SCR-EPM series operate without any energy loss in the gearbox.

sroubovy-kompresor-SCR-EPM-elektricka-energie-14

Screw compressors EPM - motor with IE4 efficiency

The SCR-EPM compressor range uses the latest technology in oil-lubricated permanent magnet motors, which, due to their design, have an extreme efficiency that exceeds the IE4 efficiency requirements of IEC EN 60034 and outperforms the conventional IE2 efficiency motors used as a standard solution for variable speed compressors by an average of 5-6%.

 vysoká účinnost IE4  životnost 100.000 MH  bez ložisek  olejové chlazení  el. krytí IP65 - prachotěsné  PTC teplotní ochrana

sroubovy-kompresor-SCR-EPM-elektricka-energie-15

Vysoké efektivity je dosaženo v celém rozsahu otáček, což přispívá k výjimečné energetické efektivitě celého kompresoru.

Modern electronic control unit

The SCR-EPM series compressors are controlled by the modern SCR9000 electronic control unit with simple operation via a 7" colour touch screen or eight navigation buttons. The SCR9000 unit has many useful features for monitoring compressor status, operating and service settings and necessary alarms.

Možnosti jednotky SCR9000  barevný dotykový displej  obrazovka 7"  měření spotřeby energie  řízení sítě až 16 kompresorů  komunikace Modbus RS485  4 tlaková pásma  týdenní plánování chodu  automatický restart

Efficient technical compressor solutions

Effective oil separation
SCR-EPM series screw compressors are equipped with a highly efficient
oil separation system to ensure perfect output quality
compressed air with peak oil content < 3 ppm. Oil
is separated by a three-stage separation system using
centrifugal force, gravitational effect in vertically oriented oil
tray and a high quality separation filter.

sroubovy-kompresor-SCR-EPM-elektricka-energie-19

Pipes instead of hoses
All necessary fluid connections are made by metallic
pipes instead of traditional rubber hoses. Thanks to this design change
you don't have to worry about any oil leaks, the risk of downtime due to
bursting of the hose and, in addition, the internal pressure gradient is reduced by
better media flow through a smoother surface.

Generous machine cooling
A generously sized combined radiator is used to cool the oil and the outlet air, perfectly cooled by an efficient fan with infinitely variable speed control. Thanks to the cooling system used, the compressor can be operated at very high temperatures of up to +45 °C. The cooling solution is also responsible for the very low outlet air temperature, which is only up to 10 °C above the compressor inlet air temperature.