Amico NFPA Triplex SCD Modular Stack Mount - Manual (Page 17)

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6. 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 10 parts per million by volume (ppmv) and ii) Alarm and system shutdown.
A. Air Compressors
Specifier: select the paragraph below reflecting the preferred technology:
SCROLL COMPRESSORS
1. The compressors 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 with 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 15.0°F 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. System piping shall be brazed except where unions are required for service. Vibration flexes shall be
made of metal and of sufficient length to achieve full isolation.
6. All required Type “K” or “L” copper tubing or brass to interconnect all compressor set components,
with unions for ease of servicing.
7. The shaft driven radial fan with shroud for air cooling.
8. Compressor motors shall be a NEMA rated, open drip proof unit with 1.15 service factory suitable for
_____ Volt, _____ Phases, ____Hz.
9. All moving parts (fans, pulleys and belts) shall be fully protected by an OSHA approved enclosure.
10. Monitor and numerically display the discharge air temperature at each compression chamber
outlet port.
11. Initiate an alarm and shut down the compressor if 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.
2. Each compressor shall be equipped with an integral air-cooled after cooler designed for a
maximum approach temperature of 15.0°F, complete with electronic drain valve.