When performing service on the electrical components of a system that is an A2L refrigerant, which practice is unacceptable?

When performing service on the electrical components of a system that is an A2L refrigerant, which practice is unacceptable?

• A. Use insulated tools
• B. De-energize the circuit before service
• C. Wear safety goggles
• D. Discharge with a screwdriver

Answer: (D)

The key safety rule here is avoiding any ignition source when working on systems that use A2L refrigerants, which are mildly flammable. The safest approach is to de-energize the circuit before service and follow lockout/tagout procedures, wear eye protection, and use tools designed to minimize sparks or shocks. Discharging a capacitor or electrical charge with a screwdriver is not acceptable because a metal tool can create a spark or arc when it contacts energized parts or discharges stored energy. That spark could ignite flammable refrigerant vapors in an A2L system. Use proper, manufacturer-recommended discharge methods and ensure the circuit is completely de-energized before handling electrical components. This minimizes ignition risk and protects you and the system.

The key safety rule here is avoiding any ignition source when working on systems that use A2L refrigerants, which are mildly flammable. The safest approach is to de-energize the circuit before service and follow lockout/tagout procedures, wear eye protection, and use tools designed to minimize sparks or shocks. Discharging a capacitor or electrical charge with a screwdriver is not acceptable because a metal tool can create a spark or arc when it contacts energized parts or discharges stored energy. That spark could ignite flammable refrigerant vapors in an A2L system. Use proper, manufacturer-recommended discharge methods and ensure the circuit is completely de-energized before handling electrical components. This minimizes ignition risk and protects you and the system.