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JANUARY 2008 UCCS STANDARDS 15950-20
let within 5’ of the enclosure.
G. All control panel locks shall conform to the University standard lock for control cabinets.
Contractor shall give the keys to the HVAC Shop at completion of training.
2.06 COMPRESSED AIR SUPPLY - PNEUMATIC
[Note to Consultant: Describe the pneumatic air source for the project. Where there
is an existing source, determine whether it has adequate capacity to handle the
additional load before using it for the project. Where the additional required
capacity is not available, specify some means of providing the required capacity.]
A. Air Compressor:
1. Furnish and install a duplex temperature control type air compressor where indicated
on plans.
2. Both compressors shall be mounted on single ASME receiver tank. Tank sized per
manufacturer's recommendations, 30 gal. minimum.
3. Each compressor to be sized for no more than 33% run time at 500 rpm maximum
(one-stage), or 700 rpm maximum (two-stage). Oil carryover shall not exceed 4 ppm.
Each compressor shall have a maximum of six starts per hour. Provide 1.15 service
factor motor, phase and voltage per electrical plans. Motors shall meet the
requirements set forth in Section 15050.
4. Provide factory starter/automatic alternator package with automatic start of standby
compressor. Starters shall meet the requirements set forth in Section 15050.
5. Provide OSHA belt guards, operating pressure switches, tank pressure gauge, intake
filters, ASME safety relief valves, check valves, shutoff valve and vibration isolation
pads for each air compressor.
6. Provide an automatic receiver tank drain valve, with a manual bypass valve.
Pipe the drain line to a floor drain.
B. Refrigerated Air Dryers:
1. Provide continuously-operating, hermetic compressor, refrigerated-type air dryer,
UL-listed, sized for maximum dewpoint of 39°F with 100°F saturated inlet air at 100
psig at maximum rated flow(-10°F at 20 psig). Pressure drop: 3 psi maximum at
rated flow. Rated working pressure: 125 psig minimum. Ambient temperature range
50 to 110°F.
2. Dryer package shall include operating/failure status indication, manual bypass service
valve, inlet and outlet pressure gauges, and automatic condensate drain trap with
manual override.