Table of Contents
Advertisement
SECTION 1 PLANNING & INSTALLATION
Work platform
Roof line
Entire pipe to be
non-corroding material
Inlet air temp
Long radius elbow
Bypass Air Piping
Atmospheric bypass piping vents the compressed air when the compressor is running
unloaded or at partial load. Bypass piping should be well supported to minimize loading on
the compressor flange. Care should be taken in the piping design so that all alignments can
be made in the piping.
A bypass silencer should be installed in the atmospheric bypass line to reduce noise. A
suitable silencer is offered as an option with the compressor package and is customer
mounted. The silencer has acoustic absorption material at a controlled density. The silencer
is usually installed close to the compressor and the vent piped outside. Alternately, the
silencer may be installed outside the building. Consult the certified drawings for complete
details of the silencer.
For sound attenuation in piping, a straight horizontal run of pipe from the compressor flange,
at least 8 pipe diameters long, is suggested before entering a long radius elbow (see Figure
1.5). The silencer should be kept as close to the compressor as possible and the total length
of pipe kept short. In noise critical areas, the discharge piping from the silencer may be
lagged to further reduce sound.
Inlet filter
p
Low point drain
Figure 1.4
Inlet Air Piping – Air Filter
8 ft. (2.4 M) min.
Max
p 0.3 psi (2.1 kPa[a])
Pipe hangars
Removable
transition piece
Inlet valve
Minimum of 4
pipe diameters
Centac Instruction Manual
2000 Ingersoll-Rand Company
Date of Issue: December, 2003
Advertisement
Table of Contents
