7 Repair and Post-Service Verification Free Online FlashCards

What qualifies as a small appliance under EPA Section 608?

A factory-manufactured, charged, hermetically sealed appliance containing 5 pounds or less of refrigerant.

Which Section 608 certification type covers small appliances?

Type I certification covers work on small appliances.

Under what supervision may an apprentice perform refrigerant-circuit work?

Apprentices may work under the close and continual supervision of a certified technician.

What power-safety step comes before electrical or mechanical work?

Disconnect electrical power before electrical or mechanical work, and follow the manufacturer’s safety instructions.

When must refrigerant be recovered before a repair?

Recover the refrigerant first whenever the repair will open the sealed circuit.

What is the small-appliance recovery benchmark for a working compressor and newer equipment?

The benchmark is 90% when the compressor works and the recovery equipment was manufactured after November 15, 1993.

What evacuation level can alternatively meet the small-appliance recovery requirement?

As an alternative, evacuate the appliance to 4 inches of mercury vacuum.

What governs replacement-part and refrigerant selection?

Use a compatible component and follow the appliance manufacturer’s procedure. Do not substitute a refrigerant or component without explicit approval for that appliance.

How should open refrigerant tubing be protected during a repair?

Keep the circuit clean and dry, and protect open tubing from dirt and moisture.

What can a pressure or vacuum decay check establish about a leak?

Use an appropriate method, such as a compatible electronic detector or approved bubble solution. A pressure or vacuum decay check may show a loss but does not necessarily locate the leak.

What must be done about leaks before charging or returning an appliance to service?

Repair leaks before charging or returning the appliance to service, and never intentionally vent refrigerant during servicing.

What should be checked before closing the appliance cabinet?

Check tubing support and clearance, route wiring and connectors correctly, restore covers and grounding, and remove tools or loose parts.