19Connecting AK940Battery Replacement• Remove the screws (Phillips-head) from the battery cover.• Replace the old battery with new; 1 (9V) battery.• Replace battery cover and screws.ABCDEFGHIJKLMNOPQRSTLWARNING!DO NOT apply pressure above 600 pDoing so may result in injury and willvoid the warranty.THVAC REFUNITS MIN MAXREFZERO PRS TESTDigital Refrigerant AnalyzerAK940LOW START PRS HIGH END PRSLIQUID SATT-HIGHSUBCOOL°C°F°C°F°C°FVAPOR SAT RPTIMEPsikPaBarMPaInHgT-LOWSUPERHEAT TBlue1/4” 3/8” Yellow1/4” Red1/4”A. Low Side Temperature Sensor ClampInput PortB. Low Side Pressure Hose ConnectionPortC. Vacuum Hose PortD. Vacuum PumpE. Recovery UnitF. Condenser UnitG. CompressorH. Suction Service PortI. Low Side Temperature Sensor ClampJ. Low Side Refrigerant LineK. High Side Temperature Sensor ClampInput PortL. High Side Pressure Hose ConnectionPortM. Refrigerant Hose PortN. Refrigerant TankO. Discharge Service PortP. High Side Temperature Sensor ClampQ. High Side Refrigerant LineR. TXV/Expansion ValveS. Evaporator Coil