NOTE: Delete the adjustable requirement for
pressure regulation on sets smaller than 1000 kW.
Sets larger than 500 kW will utilize a
pressure-relief valve on the crankcase. Show
crankcase vent piping for indoor installations.
**************************************************************************
Each engine shall have a separate lube-oil system conforming to NFPA 30 and
NFPA 37. Each system shall be pressurized by engine-driven pumps. System
pressure shall be regulated as recommended by the engine manufacturer. A
pressure relief valve shall be provided on the crankcase for closed
systems. The crankcase shall be vented in accordance with the
manufacturer's recommendation except that it shall not be vented to the
engine exhaust system. Crankcase breathers, if provided on engines
installed in buildings or enclosures, shall be piped to vent to the
outside. The system shall be readily accessible for service such as
draining, refilling, etc. Each system shall permit addition of oil and
have oil-level indication with the set operating. The system shall utilize
an oil cooler as recommended by the engine manufacturer.
2.4.1
Lube-Oil Filter
One full-flow filter shall be provided for each pump. The filter shall be
readily accessible and capable of being changed without disconnecting the
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.
2.4.3
Precirculation Pump
A motor-driven precirculation pump powered by the station battery, complete
with motor starter shall be provided if recommended by the engine
manufacturer.
2.5
COOLING SYSTEM
**************************************************************************
NOTE: Coordinate with paragraph SYSTEM DESCRIPTION.
**************************************************************************
Each engine shall have its own cooling system. Each system shall operate
automatically while its engine is running. The cooling 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 each engine shall not exceed
that recommended and submitted in paragraph SUBMITTALS.
2.5.1
Coolant Pumps
**************************************************************************
NOTE: Delete raw-water pump for closed-loop systems.
**************************************************************************
Coolant pumps shall be the centrifugal type.
Each engine shall have an
SECTION 16263A
Page 42
Previous Page
