HVAC CORE EPA
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How can ice be removed from a sight glass?
Sight glasses can be cleaned with an alcohol spray
What must be done to a badly corroded relief valve?
Any time a relief valve is damaged or corroded it must be replaced
Where can you find allowable test pressure on a system
Equipment test pressure must not exceed the maximum design rating listed on the unit data plate
Can oxygen be used to check for leaks?if not,why not?
Explosions may occur from leak checking with oxygen or compressed air
If both test pressures are given on the unit data plate which should be used?
If both a high side and low side rating are given,the low side rating should be used for pressure tests
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