G 120 II V
Page 110
1st Edition, Rev. 0 Chg. 2
Observe and maintain an ambient temperature range of 40 - 115 °F (5 - 45 °C).
The area in which the compressor unit is installed should be well lit and easily accessible to facilitate ser-
vicing and routine maintenance.
8.2.2.2
Ventilation
During normal compression, heat is generated by the compressor and by the drive motorengine. For air-
cooled compressor units, this heat needs to be vented away by sufficient ventilation.
8.2.2.2.1
Outdoor Installation
It is recommended that all gasoline and diesel engine driven compressor units be installed outdoors. Elec-
trically driven compressor units may be installed outdoors only if enclosed with weatherproof enclosure
panels.
8.2.2.2.2
Indoor Installation
The best location to install the compressor unit indoors is against an outside wall with a suitably large air
vent in front of the cooling fan. Additionally, it is necessary to position an exhaust opening in the oppo-
site wall, close to the ceiling or in the ceiling.
As a basic rule of thumb, the room should be ventilated sufficiently so as to prevent the ambient room
temperature from exceeding 105 °F (41 °C). Additional heat generating equipment or piping should be
avoided or must be well insulated.
8.2.2.2.3
Natural Ventilation
Natural ventilation should only be used up to a maximum drive power of 20 Hp. Units with higher pow-
ered drives should incorporate forced ventilation. To determine the size of the required intake and exhaust
openings for natural ventilation, refer to the following table:
AUTOMATIC COMPRESSOR CONTROL
UNIT MAY START WITHOUT WARNING!
Before carrying out maintenance and repair work, switch off at the main switch
and ensure the unit will not restart.
Drive
Hp
Intake and Exhaust Openings Dependent on Room Volume (V) and Height (h)
V = 1750 ft³ h = 6.5 ft
V = 3500 ft³ h = 10 ft
V = 7000 ft³ h = 13 ft
Intake (ft²)
Exhaust (ft²)
Intake (ft²)
Exhaust (ft²)
Intake (ft²)
Exhaust (ft²)
3
1.3
1.1
…
…
…
…
5
3.2
2.7
1.3
1.1
…
…
7.5
4.5
3.8
2.6
2.2
1.3
1.1
10
9.7
8.1
6.5
5.4
2.6
2.2
15
14.5
12.4
9.7
8.1
5.8
4.8
20
20.6
17.2
15.6
12.9
9.7
8.1
