2.22.10
Suction Accumulators
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NOTE: Delete this paragraph if other means are
taken to prevent liquid carry-over and to assure oil
return to the compressors.
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Accumulator shall be designed and installed within each suction header to
provide a positive trap for liquid carry-over and to assure oil return to
the compressors. An accumulator's internal liquid holding volume shall be
at least [_____] cubic meters feet. Design shall ensure that oil is not
trapped in the accumulator.
2.23
FABRICATION
2.23.1
Factory Coating
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NOTE: A salt fog test should be required for all
outdoor equipment. Specify a 125-hour test in
noncorrosive environments and a 500-hour test in
corrosive environments.
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Unless otherwise specified, equipment and component items, when fabricated
from ferrous metal, shall be factory finished with the manufacturer's
standard finish, except that items located outside of buildings shall have
weather resistant finishes that will withstand [125] [500] hours exposure
to the salt spray test specified in ASTM B 117 using a 25 percent sodium
chloride solution. Immediately after completion of the test, the specimen
shall show no signs of blistering, wrinkling, cracking, or loss of adhesion
and no sign of rust creepage beyond 3 mm 1/8 inch on either side of the
scratch mark. Cut edges of galvanized surfaces where hot-dip galvanized
sheet steel is used shall be coated with a zinc-rich coating conforming to
ASTM D 520, Type I.
2.23.2
Field Painting
Painting required for surfaces not otherwise specified, and finish painting
of items only primed at the factory are specified in Section 09900PAINTS
AND COATINGS.
2.23.2.1
Color Coding
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NOTE: Color coding for piping identification
required by the using agency will be developed and
inserted in the "Color Code Schedule" in Section
09900 PAINTS AND COATINGS. For Air Force
Installations, piping will be color-coded in
accordance with Attachment 4 of AFM 88-15.
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Color coding for piping identification is specified in Section 09900PAINTS
AND COATINGS.
SECTION 15652A
Page 39
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