Carrier 30HR - Manual

Carrier
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Hermetic Reciprocating
Compressors
40 thru 160 Tons
зон R 160
30HR,HS040, 050,060
30HR,HS070thru 160
DESCRIPTION
These modern multiple-compressor liquid chilling pack­
ages offer all the conveniences and economy of packaged
design, for use in chilled water air-conditioning systems and
various types of process cooling applications. Every
machine is completely factory engineered and assembled to
ensure a perfectly balanced refrigeration system. All com­
ponents are matched to perform with high efficiency and
low power consumption. Only external water and electrical
connections must be completed to make the water-cooled
unit operational. Condenserless models require, in addition,
only refrigerant line connections to the remote condenser.
The water-cooled model (30HR) is a complete one-
package system with two condensers having built-in sub­
coolers, and a direct expansion cooler with two refrigerant*,
circuits, one for each condenser.
Model 30HS is a condenserless 30HR, designed for use
with remote water-cooled, air-cooled or evaporative type
condensers Includes all features of the 30HR.
Multiple serviceable compressors are mounted on spring
vibration isolators to minimize sound and vibration trans­
mission to the unit frame and the building structure.
Hot-gas mufflers dampen compressor gas pulsations, giving
smooth, quiet operation.
Each refrigerant circuit includes a thermal expansion
valve, a liquid line solenoid valve, a filter-drier and
combination liquid line sight glass and moisture indicator.
Compact construction allows passage thru 36-inch door­
way. Little floor space required for installation.
FEATURES
• Low Inrush and Running Current because of sequential
starting and stopping Multiple Compressors*.
• Easy to Service bolted-hermetic compressors.
• Wide Range of Distribution Voltages (208 v to 600 v)
allowed by Carrier Voltage Standards*.
• Protection against Single-Phasing of compressor motors,
assured by manual reset, magnetic-trip circuit breakers.
• Internal Motor Protection against overheating, provided
by quick-sensing elements embedded in motor windings.
• Optimum Control of Chilled Water Temperature for
closer Capacity Control provided by Multiple-Step
Controller.
• Balanced Wear on Compressors assured by manual
transfer switch, which changes the lead compressor in the
starting sequence.
• Increased System Capacity, without raising horsepower
requirements, afforded by refrigerant subcooling.
• Protection against Refrigerant Migration and Oil Dilution
provided by compressor crankcase heaters, which are on
during compressor off cycle.
• Reduced Power Costs because of partial load operation
at higher suction temperatures made possible by two
separate refrigerant circuits.
©Carrier Corporation 1969 ^Single feature sheet available Form 30HR,HS-5P