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Oil lubricated screw compressors

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Oil lubricated screw compressors

Zephyr oil lubricated screw compressors are constructed with the aim to reach the best solution for the customer. The benefits are efficiency, purchasing price and service cost.

Higher and more efficient production of the compressed air is achieved by the correctly sized airend, the reduction of the inner losses, the sizing of the cooler with a proper position in the compression housing. The economic regulation is achieved with efficient asynchronous motor including VFD.

These key parts could cause most of the losses and thereby, contribute to the complete compressor’s efficiency. The producer selects each part of the compressor from the most reliable producers. Electrical equipment is mostly supplied by Siemens or Schneider Electric. The airends are mostly selected from established producers as are GHH-Rand, Aerzen or GD.

Zephyr compressors are directly coupled with the motor and the airend and this solution has several benefits against the belt driven or gear driven solution. Direct drive compressors have no losses in comparison to the belt driven ones by approximately 15%. Furthermore, direct driven solution positively effect the working conditions in low speeds where the lifetime of the bearings lasts longer and therefore, prolongs the reliability of the airend and the compressor. Additional important benefit of a direct drive is a minimal service cost for the moving parts.

It is possible to install a heat recovery unit inside the Zephyr compressors and use the compression heat for other applications. Compression heat is accumulated in the oil and through the heat exchanger it is transferred to the water side. This heat can be used, for example, heating. Energy recovery is about 90% of the input electric power and the maximum output temperature on the water side is approximately 85°C.

Zephyr compressor

Cooler

Cooling capacity of the cooler is oversized by 30%, therefore smooth operation is ensured at the hard ambient conditions.

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Control panel

Microprocessor control precisely regulates the compressor. Control panel is in Czech and another languages. Standard equipment is remote communication via Modbus.

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Motor

High efficiency IP55 motor in accordance to IE3 standard. This type of motor has positive effect on an operation costs.

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Direct drive

Motor is directly coupled with airend. This solution perfectly ensures power transmission without loses.

Compact design

Compressor is designed with minimum inner connection pipes and hoses which are source of leakages and losses.

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airsep

Air/Oil Separator

Separator element is designed from innovative material with perfect separation ability and low pressure drop. These benefits have positive effect on the efficiency.

airend

Airend

Screw elements are produced in Germany because of the higher quality. Airends are designed with the aim to reach the best performance at the low speed as much as possible.

Technical specifications of Zephyr compressors:

Zephyr compressors, fixed speed, direct driven
Model Power Capacity Pressure Dimensions Weight
kW m3/hr barg mm (l x w x h) kg
ZS 7,5DD-7 7.5 72 7 1050 x 600 x 950 250
ZS 7,5D-8 66 8
ZS 7,5D-10 54 10
ZS 7,5D-13 48 13
ZS 11D-7 11 102 7 1100 x 900 x 1150 470
ZS 11D-8 96 8
ZS 11D-10 84 10
ZS 11D-13 72 13
ZS 15D-7 15 150 7
ZS 15D-8 138 8
ZS 15D-10 126 10
ZS 15D-13 108 13
ZS 18.5D-7 18.5 186 7 1100 x 1000 x 1300 670
ZS 18.5D-8 174 8
ZS 18.5D-10 162 10
ZS 18.5D-13 144 13
ZS 22D-7 22 228 7
ZS 22D-8 210 8
ZS 22D-10 192 10
ZS 22D-13 180 13
ZS 30D-7 30 324 7 1400 x 1200 x 1480 900
ZS 30D-8 306 8
ZS 30D-10 282 10
ZS 30D-13 246 13
ZS 37D-7 37 384 7
ZS 37D-8 366 8
ZS 37D-10 342 10
ZS 37D-13 306 13
ZS 45D-7 45 468 7
ZS 45D-8 444 8
ZS 45D-10 402 10
ZS 45D-13 348 13
ZS 55D-7 55 612 7 2000 x 1450 x 1760 1720
ZS 55D-8 588 8
ZS 55D-10 522 10
ZS 55D-13 432 13
ZS 75D-7 75 816 7 1860
ZS 75D-8 780 8
ZS 75D-10 696 10
ZS 75D-13 582 13
Zephyr compressors, fixed speed, direct driven
Model Power Capacity Pressure Dimensions Weight
kW m3/hr barg mm (l x w x h) kg
ZS 90D-7 90 978 7 2500 x 1600 x 1900 2700
ZS 90D-8 954 8
ZS 90D-10 870 10
ZS 90D-13 732 13
ZS 110D-7 110 1218 7 3300
ZS 110D-8 1140 8
ZS 110D-10 1020 10
ZS 110D-13 888 13
ZS 132D-7 132 1440 7 2700 x 1750 x 2080 3500
ZS 132D-8 1380 8
ZS 132D-10 1230 10
ZS 132D-13 1080 13
ZS 160D-7 160 1620 7
ZS 160D-8 1590 8
ZS 160D-10 1410 10
ZS 160D-13 1206 13
ZS 200D-7 200 2070 7 4700
ZS 200D-8 2010 8
ZS 250D-7 250 2640 7 3200 x 2200 x 2100 4700
ZS 250D-8 2580 8
ZS 250D-10 2280 10
ZS 250D-13 1920 13
ZS 280D-7 280 3042 7 5000
ZS 280D-8 2988 8
ZS 280D-10 2430 10
ZS 280D-13 2160 13
compressor_size
Zephyr compressors, variable speed, direct driven
Model Power Capacity Pressure Dimensions Weight
kW m3/hr barg mm (l x w x h) kg
ZS 22DV-7 22 76 – 228 7 1380 x 850 x 1160 590
ZS 22DV-8 70 – 210 8
ZS 22DV-10 64 – 192 10
ZS 30DV-7 30 108 – 324 7 1600 x 1000 x 1360 900
ZS 30DV-8 102 – 306 8
ZS 30DV-10 94 – 282 10
ZS 37DV-7 37 128 – 384 7
ZS 37DV-8 122 – 366 8
ZS 37DV-10 114 – 342 10
ZS 45DV-7 45 156 – 468 7 1820 x 1000 x 1360 930
ZS 45DV-8 148 – 444 8
ZS 45DV-10 134 – 402 10
ZS 55DV-7 55 204 – 612 7 2200 x 1360 x 1755 1730
ZS 55DV-8 196 – 588 8
ZS 55DV-10 174 – 522 10
ZS 75DV-7 75 272 – 816 7 1870
ZS 75DV-8 260 – 780 8
ZS 75DV-10 232 – 696 10
ZS 90DV-7 90 326 – 978 7 2800 x 1600 x 1775 2800
ZS 90DV-8 318 – 954 8
ZS 90DV-10 290 – 870 10
ZS 110DV-7 110 406 – 1218 7
ZS 110DV-8 380 – 1140 8
ZS 110DV-10 340 – 1020 10
Zephyr compressors, variable speed, direct driven
Model Power Capacity Pressure Dimensions Weight
kW m3/hr barg mm (l x w x h) kg
ZS 132DV-7 132 480 – 1440 7 2700 x 1750 x 1850 4000
ZS 132DV-8 460 – 1380 8
ZS 132DV-10 410 – 1230 10
ZS 160DV-7 160 540 – 1620 7
ZS 160DV-8 530 – 1590 8
ZS 160DV-10 470 – 1410 10
ZS 200DV-7 200 690 – 2070 7 47000
ZS 200DV-8 670 – 2010 8
ZS 250DV-7 250 880 – 2640 7 3200 x 2050 x 2200 5500
ZS 250DV-8 860 – 2580 8
ZS 250DV-10 760 – 2280 10
ZS 280DV-7 280 1014 – 3042 7
ZS 280DV-8 996 – 2988 8
ZS 280DV-10 810 – 2430 10
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