(3)
Low temperature chilled-water or refrigerant cutout
(4)
High-pressure cutout
(5)
Low oil pressure cutout or low oil flow cutout
(6)
High oil or bearing temperature cutout
(7)
High motor winding temperature cutout
(8)
(9)
Low chilled water flow cutout
(10)
2.1.1.8
Signal Lights
Provide signal lights or other visual "failed" indications for specified
circuit to actuate the bell in event of machine cutout on protective
devices except when low pressure cutout is used as an operating control.
2.1.1.9
Provide motors suitable for use with the indicated electrical power
characteristics and the type of starter provided. Provide reduced voltage,
closed-transition type motor starter conforming to NEMA ICS 1 and NEMA ICS 2.
Provide phase failure, phase reversal, over voltage and under voltage
protection.
2.1.2
Reciprocating, Helical Rotary, Scroll, Air-Cooled
**************************************************************************
NOTE: Specify applicable ratio after consulting
current literature to ensure an energy-efficient
system is provided. The ratios specified shall
permit unlimited competition among at least three
manufacturers.
**************************************************************************
ARI 550/590. Base capacity and power ratings, at the conditions indicated
and specified, on the test requirements of ARI 550/590. Power input shall
multicompressor units, not less than two independent refrigerant circuits
shall be provided. Chillers shall be capable of operating at partial-load
conditions without increased vibration over normal vibration at full load
operation, and shall be capable of continuous operation down to minimum
capacity.
2.1.2.1
Casings
Aluminum not less than one mm 0.040 inch in nominal thickness or steel not
lighter than 18 gage (1.31 mm 0.0516 inch) in nominal thickness. Provide
condensers having horizontal air discharge with discharge baffles to direct
air upward, constructed of same material and thickness as casing. Provide
wire screens or louvers over exposed condenser coil fins not protected by
casing.
SECTION 15601N
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