3.3
PAINTING AND FINISHING
3.3.1
Factory Coating
Equipment and component items, when fabricated from ferrous metal, shall be
factory finished with the manufacturer's standard finish except that all
components inside and outside of the evaporative cooling unit shall have
weather resistant finishes that will withstand 500 hours of exposure to the
salt spray test specified in ASTM B 117 and ASTM D 1654 using a 5 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. Upon request of the Contracting Officer, results of
the test will be submitted by the manufacturer.
3.3.2
Field Painting
Painting of surfaces not otherwise specified, including nonferrous metals,
finish painting of items only primed at the factory, and field repair of
factory finish, is specified in Section 09900 PAINTING, GENERAL.
3.4
CLEANING
Ducts, plenums, and casings shall be thoroughly cleaned of all debris and
blown free of all small particles of rubbish and dust before installing
outlet faces. Equipment shall be wiped clean, with all traces of oil dust,
dirt, or paint spots removed. Temporary filters shall be provided for all
fans that are operated during construction, and after all construction dirt
has been removed from the building, new filters shall be installed.
Bearings shall be properly lubricated with oil or grease as recommended by
the manufacturer.
3.5
TESTING, ADJUSTING, AND BALANCING
Testing, adjusting, and balancing shall be as specified in Section 15990A
TESTING, ADJUSTING, AND BALANCING OF HVAC SYSTEMS.
3.6
PERFORMANCE TESTS
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NOTE: The evaporative cooling system may require
coordination with Section 15995, COMMISSIONING of
HVAC SYSTEMS. The designer is responsible for
determining if pre-commissioning and functional
checklists are necessary.
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After testing, adjusting, and balancing has been completed as specified,
the system shall be tested as a whole to see that all items perform as
integral parts of the system and that operation is as specified.
Corrections and adjustments shall be made as necessary to produce the
conditions indicated or specified. Capacity tests and general operating
tests shall be conducted by the Manufacturer's Representative. Tests shall
cover a period of not less than [_____] days and shall demonstrate that the
entire system is functioning according to the specifications. Ambient air
temperature and supply air temperature and quantity readings shall be made
at hourly intervals for the duration of the time period.
SECTION 15690A
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