SAFARI

36 AIRCONDITIONING 3. Install Refrigerant Service CanTapValve Important Do not open both the high and low hand valves of the manifold gauge. Press on the schrader valve on the side of the manifold gauge set and expel the air from inside the center hose. HINT: Press on the schrader valve until refrigerant come out of it. 4. Inspect Refrigeration System for Leaks. Note: After evacuating the air in the system, check the system for leakage. a. Open the high pressure hand valve to charge the system with refrigerant vapour. Note: When the refrigerant service can is placed right side up, refrigerant will enter the system as a vapour. b. When the low pressure gauge indicates 1 kg / cm’ (14 psi, 98 kPa), close the high pressure hand valve. c. Using a gas leak detector, check the system for leakage. If a leak is found, repair the faulty component or connection. HANDLE CONNECTION CLOSED PRESS Fig. 51 - Normal condition close LO gauge kg/cm2 14 psi 98 kPa DISC CLOSED CLOSED OPEN ( ) OPEN Fig. 52 - Insufficient refrigerant