Preparations For Commissioning; Cooling Air Volume/Minimum Cross - Gardner Denver L Series Service Manual

7.1

Cooling air volume/minimum cross

Fig. 9 a
1 Cool air intake
2 Cool air exhaust
3 Control cabinet cool air intake (L55RS-L75RS only)
The cooling air volume required by these screw
compressors is as follows:
Air-cooled 60 Hz Compressors:
L55, L55RS: 4308 cfm
L75, L80, L75RS: 6003 cfm
Water-cooled 60 Hz Compressors:
Approx. 3531 cfm
If conditions are not favorable, we recommend the
installation of venting ducts. However, the velocity of the
cooling air should not exceed 17ft/sec. We recommend a
minimum duct cross-section of approx. 10 ft
The figures below show the recommended ventilation
sections arrangement:
2
Fig. 9 b
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