Air Conditioning Exam Latest Updated
Simplest leak test - ANSWER-Soapsud solution evacuating system with gauges where should hand valves be positioned - ANSWER-High pressure open, low pressure open what absorbs moisture in accumulator - ANSWER-desiccant bag what is a accumulator not responsible for - ANSWER-insuring only liquid refrig. returns to compressor an accumulator is used in a system that uses an - ANSWER-orfice tube best leak test for a hot or cold line - ANSWER-ultraviloet leak test most sensitive leak test - ANSWER-electronic leak detector a compressor can be removed without draining refrig. if what valves are used - ANSWER-stem type minimum acceptable amount of purity - ANSWER-98% which is incorrect about vacuum oil - ANSWER-should be changed every time which is not true when ac system is evacuated - ANSWER-refrigerant is removed before opening an ac system refrig. must be - ANSWER-recovered If a system must be pressurized for service work it can safely be done with - ANSWER-nitrogen incorrect statement for pag oil - ANSWER-pag mixes well with other oil when testing an ac system rpms should be - ANSWER-1500 how long should ac system run and stabilize before taking outlet temp - ANSWER-5-10min discharge line from compressor should feel - ANSWER-Hot to the touch liquid line from condenser to reciever drier should feel - ANSWER-warm to touch
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