What safety precaution should you follow when opening the split-system installation valves?
A) Do not overtighten in the backseat direction.
B) Make sure they are securely frontseated before operating the system.
C) Always make sure they are securely backseated.
D) Make sure that they are frontseat cracked before operating the system.
[Ques. 2] Three general areas of problems in air-conditioning systems include electrical problems, mechanical problems, and:
A) Wiring problems. B) Communication problems.
C) Airflow problems. D) Undercharge problems.
[Ques. 3] When performing a test and balance procedure on a zoned system, correct airflow should first be established:
A) For each zone before balancing the individual branches.
B) For the branch with the highest CFM requirement in each zone.
C) For each branch before balancing the zones.
D) For the branch with the lowest CFM requirement in each zone.
[Ques. 4] In general, when a blower motor moves more air, its amp draw will:
A) Stay the same.
B) Increase.
C) Will not be affected because there is no correlation between airflow and current draw.
D) Decrease.
[Ques. 5] The resistance of a good cad cell when it is in the dark should be:
A) 1,000 to 5,000. B) 5,000 to 10,000. C) 30 to 1,000. D) 100,000 or higher.
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