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7 Preparation for Commissioning
26
7
Pr eparation for Co mmissioning
7.1
Cooling Air Volume/Minimum
Channel Diameter
Fig. 9
L23 – L29
1 Cool air intake
2 Cool air exhaust
Fig. 10
L23RS-L29RS
1 Additional cooling air intake switch cabinet (only
L23RS-L29RS)
The required volume of cooling air for the screw
compressors of the following systems is:
L23
2578 ft
³
/min
L23RS
2578 ft
³
/min
L26
2860 ft
³
/min
L26RS
2860 ft
³
/min
L29
3319 ft
³
/min
L29RS
3319 ft
³
/min
If conditions are not favorable, the installation of
ventilation ducts is recommended. However, a cooling
airflow rate of 17 ft/sec should not be exceeded. We
recommend a minimum channel diameter of
approximately 6 ft
2
.
NOTICE
The minimum channel diameter is based on a
duct with a maximum length of 16.4 ft and a
maximum of one bend. For different values
(over 16.4 ft, more than one bend, using filters,
grills, etc.) please consult with your expert
advisor.
The screw compressor is designed for ambient
and cooling air temperatures of 33.8 °F to
113 °F. For temperatures outside of this range,
please consult your expert advisor.
To ensure proper heat removal, auxiliary fans
installed should move approximately 15 to 20%
more air volume than the sum of the cooling air
volume required by the compressors in the air
compressor station.
Summary of Contents for L23
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