Atlas Copco GA15, Instruction Book

Page: 124 / 170

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
v
= 0.92 N/ΔT
Q
v
= Required ventilation capacity in m
3
/s
N = Shaft input of compressor in kW
ΔT = Temperature increase in the compressor room in °C
5 The drain pipes to the drain collector must not dip into the water of the drain collector. Instal
an oil/water separator to ensure that the condensate meets the requirements of the
environmental codes. Consult Atlas Copco.
6 Control module with monitoring panel.
7 Power supply cable to be sized and installed by a qualified electrician.
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.
8 Filter type DD+ for general purpose filtration (particle removal down to 1 micron with a
maximum oil carry over of 0.5 mg/m
3
.
A high efficiency filter type PD+ may be installed downstream the DD+ filter (particle removal
down to 0.01 micron and maximum oil carry over of 0.01 mg/m
3
.
If oil vapors and odors are undesirable, a QD type filter can be installed downstream the PD+
filter.
It is recommended to install bypass pipes with ball valves over each filter in order to isolate
the filters during service operations without disturbing the compressed air delivery.
9 Air receiver. The air receiver must be equipped with a safety valve.
10 Cooling air outlet grating.
11 Cooling air outlet grating of the dryer (FF compressors).
12 Service panel
All pipes to be connected stress free to the compressor!
Safety
The operator must apply all relevant safety precautions, including those mentioned in this
book.
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.
Instruction book
122 2920 7140 90