Atlas Copco GA 15 Instruction Book page 120

Description
1 Install the compressor unit on a solid, level floor suitable for taking the weight. Recommended
minimum distance between top of the unit and ceiling is 900 mm (35 in). Distance between unit
and walls stated are minimum.
* Recommended distance is 500 mm for easy access.
Air receiver may not be bolted to the ground.
2 Position of the compressed air outlet valve (can be located on both sides of the air receiver).
3 The pressure drop over the air delivery pipe can be calculated as follows:
Δp = (L x 450 x Q
d = Inner diameter of the pipe in mm
Δp = Pressure drop in bar (recommended maximum: 0.1 bar (1.5 psi))
L = Length of the pipe in m
P = Absolute pressure at the compressor outlet in bar
Q
It is recommended that the connection of the compressor air outlet pipe is made on top of the
main air net pipe in order to minimise carry-over of possible condensate residue.
4 Ventilation: the inlet grids and ventilation fan should be installed in such a way that any
recirculation of cooling air to the compressor is avoided. The maximum air velocity through the
grids is 5 m/s (16.5 ft/s).
Cooling air ducts are not allowed.
The maximum air temperature at the compressor intake is 46 ˚C (115 ˚F) (minimum 0 ˚C / 32
˚F).
The ventilation capacity required to limit the compressor room temperature can be
calculated from:
Q
Q
N = Shaft input of compressor in kW
ΔT = Temperature increase in the compressor room in °C
5 Mains cable entry.
To preserve the protection degree of the electric cubicle and to protect its components from dust
from the environment, it is mandatory to use a proper cable gland when connecting the supply
cable to the compressor.
Safety
Outdoor/altitude operation
Fix speed compressors can be sold with option "rain protection". With this option, this compressor can be
installed outside under a shelter, in frost free conditions. If frost might occur, the appropriate measures should
be taken to avoid damage to the machine and its ancillary equipment. In this case, and also if operating above
1000 m (3300 ft), consult Atlas Copco.
Moving/lifting
Floor-mounted unit: the compressor can be moved by a lift truck. Take care not to damage any installed
connections under the frame while moving the truck or compressor. For lifting make sure that the forks are
long enough to give a stable support for the compressor.
118
1.85
) / (d
c
= Free air delivery of the compressor in l/s
c
= 0.92 N/ΔT
v
= Required ventilation capacity in m
v
The operator must apply all relevant safety precautions, including those mentioned in this book.
5
x P), with
3
/s
Instruction book
2920 7083 31