2.2.3.4
Receivers
Welded steel tanks with ASME BPVC SEC VIII D1 code and label for pressure
rating. Protect interior and exterior surfaces of receivers with a
factory-applied 0.13 mm 5 mil minimum non-toxic enamel or galvanized
coating. Provide necessary gages, switches, and automatic drains as
recommended by manufacturer.
2.2.3.5
Medical Air Dryers
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NOTE: If medical air dryers are for outdoor
installation, indicate the local ambient conditions.
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Self contained, refrigerated, hermetic compressors, moisture separator,
heat exchanger, automatic controls, and automatic drains. At 38 degrees C
100 degrees F ambient, provide minimum drying capacity to produce a constant
2 degrees C 35 degree F dew point medical air. Provide an enameled steel
housing[, weatherproofed for outside installation]. Provide cycling or
non-cycling controls in accordance with manufacturer's recommendation.
Provide dew point monitor with digital or gage display, carbon monoxide
monitor with high carbon monoxide level alarm, and interface with the
master alarm panels.
2.2.3.6
Intake Air Filter and Muffler
Dry-inlet filter and muffler with silencer tubes.
Provide replaceable one
micron filter elements.
2.2.3.7
Outlet Air Filters
Provide one micron filters of the indicated liter per second cfmcapacity
and working pressure.
2.2.3.8
Failure Alarms
Provide pressure switch to activate audible and visual alarms when
compressed air pressure falls below 20 percent of the predetermined
setting. Provide high water level shutdown or alarm switches for the
receivers.
2.2.3.9
Automatic Controls
Provide automatic controls for alternating the units on start-up and to
prevent simultaneous start-up of two or more units when on emergency power.
2.2.4
Vacuum Pumps
Submit manufacturer, model, operating speed, capacity (liter per secondcfm,
free air exhausted from rated vacuum), bearing, lubrication, adjustment of
drive, capacity of tank (liter) (gallon), electric motor (manufacturer,
frame, type, speed, current characteristics, and kilowatt horsepower),
thermal cutout switch (manufacturer, type, and model), and motor starter
(manufacturer, type, and model). Provide rotary or centrifugal pumps with
stainless steel body construction. Provide pumps capable of continuous
operation at indicated vacuum.
SECTION 15217N
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