e.
Gaskets:
Manufacturer's standard.
2.1.5
Pipe Hangers
MSS SP-58 and MSS SP-69.
2.1.6
Electrical Enclosures
NEMA ICS 6.
2.1.6.1
Power Switchgear Assemblies
NEMA SG 6.
2.1.6.2
Switchboards
NEMA PB 2.
2.1.6.3
NEMA PB 1.
2.1.7
Electric motors shall conform to the requirements of NEMA MG 1. Motors
shall have sealed ball bearings and a maximum speed of 1800 rpm. Motors
used indoors shall have drip-proof frames; those used outside shall be
totally enclosed. Alternating current motors larger than 373 W (1/2 Hp)
1/2 Hp shall be of the squirrel-cage induction type for operation on 208
volts or higher, [50] [60] Hz, and three-phase power. Alternating current
motors 373 W (1/2 Hp) 1/2 Hp or smaller, shall be suitable for operation on
120 volts, [50] [60] Hz, and single-phase power. Direct current motors
shall be suitable for operation on [125] [_____] volts.
2.1.8
Motor controllers and starters shall conform to the requirements of NFPA 70
and NEMA ICS 2.
2.2
ENGINE
**************************************************************************
NOTE: Specify fuel type if different than No. 2
diesel.
If units are required to operate on more than one
fuel the designer must edit the components,
performance requirements, and testing requirements
of this specification to define the requirements for
the fuels specified. If full performance is
required for the weakest or poorest burning fuels,
then the units will be overrated for other fuels.
**************************************************************************
Each engine shall operate on No. 2-D diesel fuel conforming to ASTM D 975,
shall be designed for stationary applications and shall be complete with
ancillaries. The engine shall be a standard production model described in
the manufacturer's catalog. The engine shall be naturally aspirated,
SECTION 16263A
Page 36
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