Preparations For Commissioning; Cooling Air Volume/Minimum Cross - CompAir L15 Operating And Service Manual

6. Preparations for commissioning

6 Pr epar ati on s f or com m iss io nin g
6.1

Cooling air volume/minimum cross

Fig. 9
1 Cooling air intake
2 Cooling air outlet
3 Control cabinet cooling-air inlet
(L90RS - L132RS only)
The cooling air volume required by these screw
compressors is as follows:
L90 A
L110 A/L110RS A
L110 A/L90RS A
L132 A/L132RS A
L140 A
L90 - L132 W/
L90RS - L132RS W
Under unfavourable local conditions, we recommend
the installation of venting ducts. However, the velocity
of the cooling air should not exceed 5 m/s (17 ft/sec).
We recommend a minimum duct cross-section of
2
approx. 0.91 m .
Important
The stated minimum cross-section refers to a
maximum duct length of 5 m (16.4 ft) and a
maximum of one bend. In the event of differing
values (over 5 m (16.4 ft), more than one bend, filter
cartridges, screens, etc.), please contact your
technical adviser.
50 Hz 60 Hz
197m³/min
223m³/min
(6957 cfm)
248m³/min
227m³/min
(8758 cfm)
197m³/min
223m³/min
(6957 cfm)
248m³/min
273m³/min
(8758 cfm)
248m³/min
273m³/min
(8758 cfm)
100m³/min
100m³/min
(3531 cfm)
CompAir screw compressors are rated for ambient
temperatures and cooling temperatures of +1°C
(33.8 °F) to +45°C (113 °F). In the case of
temperatures other than the above limiting values,
please consult your technical adviser.
Note
In order to ensure a good heat dissipation, auxiliary
fans should be rated to process approximately 15 to
20% more air volume than the total cooling air
quantity required by the compressors installed in the
compressed air station.
The figures below show the recommended ventilation
sections arrangement:
Air channel
Ventilator
Fig. 9 a
Air
intake
Air
intake
27