Atlas Copco GA 11+, Instruction Book

Page: 76 / 152

Air delivery pipe
The pressure drop over the air delivery pipe can be calculated from:
Δp = (L x 450 x Q
c
1.85
) / (d
5
x P)
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(a)
Q
c
= free air delivery of the compressor in l/s
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 minimize carry-over of possible condensate residue.
For proper maintenance, a manual controllable valve has to be installed on the compressed air
outlet in order to isolate the compressor from the compressed air network.
Dryer bypass
A set of pipes to bypass the dryer during service operations is available as standard option.
Consult your supplier.
Instruction book
74 2920 7118 31