Qlima S60 Series Operating Manual page 131

5. While firmly gripping the body of the valve, use a torque wrench to tighten the flare nut according to
the correct torque values.
6. Loosen the flaring nut slightly, then tighten again.
7. Repeat Steps 3 to 6 for the remaining pipe.
USE SPANNER TO GRIP MAIN BODY OF VALVE
Torque from tightening the flare nut can snap off other parts of valve.
AIR EVACUATION
Preparations and Precautions
Air and foreign matter in the refrigerant circuit can cause abnormal rises in pressure, which can damage
the air conditioner, reduce its efficiency, and cause injury. Use a vacuum pump and manifold gauge to
evacuate the refrigerant circuit, removing any non-condensable gas and moisture from the system.
Evacuation should be performed upon initial installation and when unit is relocated.
G
BEFORE PERFORMING EVACUATION
• Check to make sure the connective pipes between the indoor and outdoor units are
connected properly.
• Check to make sure all wiring is connected properly.
Evacuation Instructions
1. Connect the charge hose of the manifold gauge to service port on the outdoor unit's low pressure
valve.
2. Connect another charge hose from the manifold gauge to the vacuum pump.
3. Open the Low Pressure side of the manifold gauge. Keep the High Pressure side closed.
4. Turn on the vacuum pump to evacuate the system.
5. Run the vacuum for at least 15 minutes, or until the Compound Meter reads -76cmHG (-10 Pa).
Compound gauge
-76cmHg
Low pressure valve
Pressure hose
Charge hose
Low pressure valve
6. Close the Low Pressure side of the manifold gauge, and turn off the vacuum pump.
7. Wait for 5 minutes, then check that there has been no change in system pressure.
man_S60xx EU ('21) V3.indd 131 man_S60xx EU ('21) V3.indd 131
Valve cover
Manifold Gauge
Pressure gauge
High pressure valve
Charge hose
Vacuum pump
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