What is the maximum refrigerant charge mentioned for Type 1 appliances?

• A. 1 lb
• B. 3 lbs
• C. 5 lbs
• D. 10 lbs

Answer: (B)

Type I appliances are the small, portable systems that contain only a small amount of refrigerant. In this material, a 3-pound limit is used to distinguish Type I from larger units, so the maximum refrigerant charge mentioned for Type I is 3 pounds. This threshold matters because keeping within 3 pounds means you’re dealing with a small appliance category with simpler service rules and particular recovery requirements. If the unit's charge were higher than 3 pounds, it would be categorized as a larger appliance (Type II) and would fall under the more stringent servicing rules and recovery standards. The other options don't fit the material's definition: 1 pound is below the limit, 5 pounds would place the unit in a higher category in this course's framework (not Type I), and 10 pounds is well above the limit.