HVAC technicians need a variety of repair methods in their tool bag. Refrigerant leaks are no different, most leaks are brazed using oxy-acetylene and silfos. I was working in a server room with zero ventilation and wanted to try AC Smart Seal External on a capillary line rub out rather than spark a torch and create unneeded fumes. The repair went very well. Others tools used…Testo 557 digital gauges, Testo 316-3 electronic leak detector, Viper BigBlu soap bubbles, Navac NP2DLM 2 cfm battery operated vacuum pump, Accutools TruBlu hoses and BluVac Professional Plus vaccum gauge.
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