Which certification does a technician need to repair its sealed system?

Recovery requirements · EPA 608 Type I. The correct answer, and the reasoning behind it.

The small-appliance definition and the recovery levels required.

The question

A commercial ice machine is factory-sealed with 6 pounds of R-404A. Which certification does a technician need to repair its sealed system?

• AType I, because it was sealed at the factory
• BType III, because ice machines are low-pressure
• CNone, because ice machines are exempt
• DType II, because it is over the 5-pound limitCorrect answer

Why “Type II, because it is over the 5-pound limit” is correct

A small appliance holds 5 pounds or less. At 6 pounds, this machine is a high-pressure appliance outside the small-appliance definition, and servicing it requires Type II certification, or Universal.

Source: 40 CFR 82.152; 40 CFR 82.161(a)

Why the other answers are wrong

• Type I, because it was sealed at the factory — Factory sealing is not enough; the charge must also be 5 pounds or less.
• Type III, because ice machines are low-pressure — R-404A is not a low-pressure refrigerant.
• None, because ice machines are exempt — Ice machines with non-exempt refrigerants are covered by Section 608.

Practice more of this

More EPA 608 Type I practice questions, or see every EPA 608 practice test.