Technovate 2-in-1 Vacuum & Pressure Pump for AC and Refrigerator Refrigeration Service Pump for Vacuuming, Pressure Leak Testing & HVAC Maintenance Up to 500 PSI

A. Pressure Leak Testing Mode Switch off the AC or refrigeration system and isolate it from electrical power. Ensure the system is prepared for pressure testing according to the manufacturer's service procedure. Connect the appropriate pressure-rated hoses, gauge and fittings to the designated test ports. Check that all connections are secure. Select the pressure-testing function as instructed in the pump manual. Introduce pressure gradually, monitoring the gauge continuously. Never exceed the lowest pressure rating of any connected component or the system manufacturer's specified test pressure. Close the supply and observe the pressure gauge for changes. Use an approved leak-detection method to identify leaks. Depressurize the system safely before disconnecting any hoses or fittings. Important: Never use oxygen or compressed air to pressure-test a refrigeration system. Use only the manufacturer-approved test gas and pressure-rated equipment. Do not disconnect pressurized connections. B. Vacuuming Mode Ensure the refrigeration system has been safely recovered and prepared for evacuation according to the service manual. Connect suitable vacuum-rated hoses and a micron gauge to the designated service ports. Select the vacuum function according to the machine's instructions. Start the pump and monitor the vacuum level using a suitable micron gauge. Continue evacuation until the required vacuum level is achieved as specified by the equipment manufacturer. Isolate the system and perform a vacuum hold test to check for leaks or moisture-related issues. Switch off the pump, isolate the connections and disconnect only after confirming safe conditions. Do not operate the pump against a pressurized system in vacuum mode. Before switching between pressure and vacuum functions, completely release pressure and follow the machine's changeover procedure.