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HAC-122 < PRECAUTION > [WITHOUT 7 INCH DISPLAY] PRECAUTIONS Be certain to follow the manufacturer instructions for tester operation and tester maintenance. VACUUM PUMP The lubricant contained inside the vacuum pump is not compatible pump. Close this valve to isolate the service hose from the pump. • Use a hose equipped with a manual shut-off valve near the pump end for pumps without an isolator. Close the valve to isolate the • Disconnect the hose from the pump if the hose has an automatic shut-off valve. As long as the hose is connected, the valve is open Some one-way valves open when vacuum is applied and close MANIFOLD GAUGE SET Be certain that the gauge face indicates HFC-134a or R-134a. Be ″ -16 ACME threaded connections for ser- vice hoses. Confirm the set has been used only with refrigerant SERVICE HOSES Be certain that the service hoses display the markings described SERVICE COUPLERS RHA270DA SHA533D RHA272D |