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In a refrigeration system, the component directly following the
evaporator is the? --- correct answer ---Accumulator.
Manifold gauge set hoses should have self-sealing connectors or hand
valves to? --- correct answer ---Minimize the release of refrigerant
when the hoses are connected & disconnected.
The EPA regulations require that leaking commercial or industrial
process refrigeration equipment must be repaired when the leak rate
exceeds _____ of the charge per year. --- correct answer ---35%
Moisture is removed from a system by? --- correct answer ---Using a
filter drier.
Oil foaming usually occurs in the? --- correct answer ---Compressor
, R-410A is different from other ASHRAE 400 series non-azeotropic
blends because? --- correct answer ---R-410A behaves as a near
azeotropic refrigerant, & can be topped off.
With an air-cooled condenser on the roof of a building & the
evaporator on the first floor, recovery should first occur? --- correct
answer ---From the liquid line entering the evaporator.
A deep vacuum is usually measured in? --- correct answer ---Microns.
Heat Pumps that use R-134A should be leak checked with? --- correct
answer ---Pressurized Nitrogen.
During the evacuation of a system that contains large amounts of
moisture it may be necessary to increase pressure in the system with
________, to counteract the freezing of the moisture. --- correct
answer ---Nitrogen.
When under a deep vacuum, the motor winding of a hermetic
refrigeration compressor? --- correct answer ---Will be damaged if
energized.