If a technician suspects that refrigerant is leaking into the water circuit of a water-cooled condenser, what tool should they use to confirm their suspicion?

Using an electronic leak detector is the ideal choice in this scenario to confirm a suspected refrigerant leak into the water circuit of a water-cooled condenser. This device is specifically designed to detect small concentrations of refrigerants in the environment and can provide accurate readings of any refrigerant present. By utilizing an electronic leak detector, the technician can quickly and reliably identify the presence of refrigerant, even in conditions where the leak may not be visibly apparent.

This choice is especially important in situations where there could be a significant health or environmental risk associated with refrigerant leaks. Electronic leak detectors are sensitive and capable of detecting various types of refrigerant gases, making them essential tools for technicians addressing potential leaks.

The other tools listed may not be effective for confirming the leak in this context. A pressure gauge measures system pressure but does not help identify refrigerant leaks directly. A manifold gauge provides information about both high and low pressure in a refrigeration system but also does not indicate the presence of refrigerant in a separate water circuit. A vacuum pump removes air and moisture from a system but does not serve to detect refrigerant leaks. Thus, the electronic leak detector stands out as the most reliable option for verifying a refrigerant leak into the water circuit.