Final answer:
To leak check an HFC-134a system with a partial charge without an HFC-134a detector, you can use a soap bubble solution or a halide torch.
Step-by-step explanation:
To leak check an HFC-134a system with a partial charge without an HFC-134a detector, you can use a soap bubble solution or a halide torch. To use the soap bubble solution, mix water with a small amount of liquid dish soap and apply the solution to the fittings and connections of the system. If there is a leak, bubbles will form. A halide torch is a portable tool that emits ultraviolet light. By shining the torch on the components of the system, any refrigerant leak will show up as a bright glow.