piping or disturbing other components.
The filter shall have inlet and
outlet connections plainly marked.
2.4.2
Lube-Oil Sensors
Each engine shall be equipped with lube-oil pressure sensors. Pressure
sensors shall be located downstream of the filters and provide signals for
required indication and alarms.
2.5
COOLING SYSTEM
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NOTE: Coordinate with paragraph SYSTEM DESCRIPTION.
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Each engine cooling system shall operate automatically while the engine is
running. Each cooling system shall be sized for the maximum summer
[outdoor] [indoor] design temperature and site elevation. Water-cooled
system coolant shall use a combination of water and ethylene-glycol
sufficient for freeze protection at the minimum winter outdoor temperature
specified. The maximum temperature rise of the coolant across the engine
shall be no more than that recommended and submitted in accordance with
paragraph SUBMITTALS.
2.5.1
Coolant Pumps
Coolant pumps shall be the centrifugal type. Each engine shall have an
engine-driven primary pump. Secondary pumps shall be electric motor driven
and have automatic controllers.
2.5.2
Heat Exchanger
Each heat exchanger shall be of a size and capacity to limit the maximum
allowable temperature rise in the coolant across the engine to that
recommended and submitted in accordance with paragraph SUBMITTALS for the
maximum summer outdoor design temperature and site elevation. Each heat
exchanger shall be corrosion resistant, suitable for service in ambient
conditions of application.
2.5.2.1
Fin-Tube-Type Heat Exchanger (Radiator)
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NOTE: Keep this paragraph and delete the next
paragraph, if required by the project.
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Heat exchanger may be factory coated with corrosive resistant film
providing that corrosion measures are taken to restore the heat rejection
capability of the radiator to the initial design requirement via
oversizing, or other compensating methods. Internal surfaces shall be
compatible with liquid fluid coolant used. Materials and coolant are
subject to approval by the Contracting Officer. Heat exchangers shall be
pressure type incorporating a pressure valve, vacuum valve and a cap. Caps
shall be designed for pressure relief prior to removal. Each heat
exchanger and the entire cooling system shall be capable of withstanding a
minimum pressure of 48 kPa gauge (7 psi) 7 psi. Each heat exchanger shall
be protected with a strong grille or screen guard. Each heat exchanger
shall have at least two tapped holes. One tapped hole in the heat
exchanger shall be equipped with a drain cock, the rest shall be plugged.
SECTION 16264A
Page 35
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