Sos Mechanic Certification- Hvac |56 Questions| With Correct Answers.

an AC system should be kept or plugged after it has been open to prevent system from being {Ans: the entrance of moisture in dirt}which of the following is true about a condenser {Ans: all the above}Create if you are checking for a slow leak on a AC system with r12 {Ans: fully recharge the system before you start to check it}low 45 high 325 {Ans: over charged}Low side pressure is low and high side pressure is high {Ans: Restriction in a line or a stuck closed expansion valve}Both low side and high side pressures are high {Ans: Overcharge, faulty restriction device or blockage of the high side}