C950 PLANNING & INSTALLATION MANUAL
17
TP0029 Rev.5
Ó
2000 Ingersoll-Rand Company
Date of Revision: 15 August, 2000
Figure 8
Control Panel Connections
Instrument Air Piping
Instrument air must be provided for the operation of the pneumatic control valves and for the
seal buffer air. The air used must be clean dry instrument quality air. For best results, piping
should be connected to a refrigerated air dryer and filter prior to connection on the unit. The
Centac compressor normally requires 10 SCFM (0.33 m
3
/m) of air at 60-120 PSIG
(414-827 kPa).
The final filtering medium should be rated at a theoretical efficiency of 99.9999%, particle
size of 0.01 micron, and a minimum or 25 SCFM (0.82 m
3
/m). This filter should be located
close to the control panel. An isolation valve may be located ahead of the filter.
Piping from the instrument air source should be constructed of 1/2 inch minimum
non-corroding material to limit the possibility of corrosion products entering the system.
Instrument air piping connects to the control panel at the 1/2 inch NPT bulkhead fitting
marked “IA”.
Water System Piping
The water piping section consists of the following topics:
·
Cooling water piping – provides cooling water to the air and oil coolers of the
compressor
·
Cooling water specifications – gives recommendations for clean water
·
Air cooler vent and drain – connects air vents and cooler drains
·
Condensate drain piping – provides a means of removing condensate from the moisture
removal sections
Control Air
PT1
PT3
PT4
Seal Air
Power Air
Instrument Air
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90.10_Pre-Installation and Operation Manual
