"Caution - (Name of applicable system) Valves. Do not close except in
emergency. This valve controls (Name of applicable system) to [_____]."
3.15
ORAL EVACUATION VACUUM SYSTEM INSTALLATION
3.15.1
Installation and Startup
HVE, HIVAC, and HVEL system installation shall be approved by factory
trained personnel. System startup shall be performed by factory trained
personnel.
3.15.2
Vacuum Turbine Units
Shutoff valve shall be installed on the suction and discharge of each
turbine. Check valve shall be installed on each turbine discharge. Piping
connections shall be made with flexible fittings.
3.15.3
Central Separator
The separator shall be located so that the lower canister can be removed
easily and cleaned. The separator shall be equipped with a cut-off valve
to permit shutdown when the system is not in use. Piping shall be of
corrosion-resistant material, with a smooth internal surface, and shall not
collapse when installed in a vacuum system evacuated to 27 kPa 8 inches of
mercury. Piping shall be cut square, with burrs removed and installed with
minimum of obstructions to air flow. Fittings, supports, and joint
assembly shall be of approved type. The assembled piping system shall be
suitable for the vacuum requirement specified above. Fittings shall be
long radius type, except wye type shall be utilized for branches. Piping
shall slope not less than 9 mm per meter 1/8 inch per foot to separators.
Coupling, unions, and other disconnecting couplings shall be readily
accessible.
3.15.4
Field Instructions
Upon completion of the work and at a time designated by the Contracting
Officer, the services of one or more competent engineers shall be provided
by the Contractor for [1 day] [[_____] days] to instruct a representative
of the Government in the operation and maintenance of the oral evacuation
system. These field instructions shall cover the items contained in the
bound instructions.
3.16
FIXTURES AND FIXTURE TRIMMINGS
Polished chromium-plated pipe, valves, and fittings shall be provided where
exposed to view. Angle stops, straight stops, stops integral with the
faucets, or concealed type of lock-shield, and loose-key pattern stops for
supplies with threaded, or sweat inlets shall be furnished and installed
with fixtures. Where connections between copper tubing and faucets are
made by rubber compression fittings, a beaded tool shall be used to
mechanically deform the tubing above the compression fittings. Exposed
traps and supply pipes for fixtures and equipment shall be connected to the
rough piping systems at the wall, unless otherwise specified under the
item. Floor and wall escutcheons shall be as specified. Drain lines and
hot water lines of fixtures for handicapped personnel shall be insulated
and do not require polished chrome finish. Plumbing fixtures and
accessories shall be installed within the space shown. Stops for water
closet seats shall be installed on the wall.
SECTION 15405A
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