Amico CSA Triplex SCD Modular Stack Mount - Manual (Page 15)

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6. The compressor modules and motors shall be fully isolated from the main compressor base by
means of a four point; heavy-duty seismic restrained approved isolation system for a minimum of
95% isolation efficiency. Engineering data shall be provided supporting isolation efficiency
and equal weight distribution between supports. Pumps not having this feature shall have an inertia
base sized for that system installed at the contractors’ expense.
7. The compressor shall be capable of supplying the system design flow of the pipeline distribution
system with any two units out of service, except for facilities mentioned above where only
two compressors are used.
8. All air systems will be equipped with a CO monitor. The monitor will have an alarm to: i) Alarm if the
level of CO exceeds 5 parts per million by volume (ppmv) and ii) Alarm and system shutdown if the
level exceeds 25 ppmv.
A. Air Compressors
Specifier: select the paragraph below reflecting the preferred technology:
SCROLL COMPRESSORS
1. The compressor shall be a continuous duty rated scroll type with sealed bearings. The design shall
be single stage, air-cooled, consisting of one fixed and one orbiting scroll sealed with PTFE tip seals
between the scroll halves and rated for 120 PSIG discharge pressure. Orbiting bearings shall be
grease filled and permanently sealed type requiring no lubrication at any time. Units requiring
re-lubrication are not acceptable. Oil-less type compressor. Noise level shall not exceed 75dB (A) for
duplex system, 77dB (A) for triplex system and 79 dB (A) for quad system with pumps running at
peak demand.
2. On multiple head applications, belt tightening devices are included.
3. Each compressor shall be equipped with an integral air-cooled after cooler designed for a maximum
approach temperature of 7.0°C (15°F) ambient, a CRN certified moisture separator complete with
electronic drain valve.
4. The discharge of piping of each compressor shall incorporate an integral valve to prevent more than
1/4 revolution of reverse rotation of the scroll at shutdown.
5. All required Type “K” or “L” copper tubing or brass to interconnect all compressor set components,
with unions for ease of servicing.
6. Compressor motors shall be a NEMA rated, open drip proof unit with 1.15 service factor suitable for
___ volt, ___ phase, ___Hz.
7. All moving parts (fans, pulleys and belts) shall be fully protected by an OSHA approved enclosure.
8. Monitor and numerically display the discharge air temperature at each compression chamber outlet
port.
9. Initiate an alarm and shut down the compressor if any cylinder discharge temperature exceeds the
manufacturer’s recommended level.
RECIPROCATING COMPRESSOR
1. The compressors shall be single stage, air cooled, and reciprocating type with corrosion resistant
valves with stainless steel reeds. Crankcase ventilation shall be filtered to prevent dust and insects
from entering the crankcase. All bearings shall be permanently lubricated and sealed; compressors
that require bearings to be re-greased are not acceptable.
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