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A refrigerating unit in which the compressor and compressor motor are sealed in the same housing, with no external shaft or shaft seal and the compressor motor operating in the refrigerant atmosphere.

Related Terms

ISO SOLID CONTAMINANT CODE (ISO 4406)

A code assigned on the basis of the number of particles per unit volume greater than 5 and 15 micrometers in size. Range numbers identify each increment in the particle population throughout the spectrum of levels.

REMOTE REFRIGERATING SYSTEM

Refrigerating system in which condensing unit is away from space to be cooled.

BEARING

A support or guide by means of which a moving part such as a shaft or axle is positioned with respect to the other parts of a mechanism.

CAM

Eccentric shaft used in most internal combustion engines to open and close valves.

ACCESSIBLE HERMETIC

An assembly of motor and compressor, inside a single bolted housing unit.

ATF

Fluid for automatic, hydraulic transmissions in motor vehicles.

AIR GAP

The space between magnetic poles, or between the rotating and stationary assemblies in a motor or generator.

GROUND LOG

A device for determining the course and speed over the ground in shallow water consisting of a lead or weight attached to a line. The lead is thrown overboard and allowed to rest on the bottom. The course over ground is indicated by the direction the line tends and the speed by the amount of line paid out in a unit of time.

API GRAVITY

A gravity scale established by the American Petroleum Institute and in general use in the petroleum industry, the unit being called 'the A.P.I. degree' .

FLOW RATE

The volume, mass, or weight of a fluid passing through any conductor per unit of time.
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