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15
6.5 Pumping down (Re-installation)
Procedure
1. Confirm that both the 2-way and 3-way valves are set to the opened position.
Remove the valve stem caps and confirm that the valve stems are in the opened position.
Be sure to use a hexagonal wrench to operate the valve stems.
2. Operate the unit for 10 to 15 minutes.
3. Stop operation and wait for 3 minutes, then connect the charge set to the service port of the 3-way
valve.
Connect the charge hose with the push pin to the gas service port.
5. Air purging of the charge hose.
Open the low-pressure valve on the charge set slightly to purge air from the charge hose.
6. Set the 2-way valve to the close position.
7. Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0.1MPa.
8. Immediately set the 3-way valve to the closed position.
Do this quickly so that the gauge ends up indicating 0.3 to 0.5Mpa.
Disconnect the charge set, and amount the 2-way and 3-
way valve’s stem nuts and service port caps.
Use a torque wrench to tighten the service port cap to a torque of 1.8 kgf.m.
Be sure to check for gas leakage.
Summary of Contents for 38LUVH025N
Page 8: ...6 3 Dimension 3 1 Indoor Unit 42LUVH025N 42LUVH035N 42LUVH045N...
Page 9: ...7 3 2 Outdoor Unit 38LUVH025N 38LUVH035N 38LUVH045N...
Page 10: ...8 4 Refrigerant cycle diagram...
Page 11: ...9 5 Wiring diagram 5 1 Indoor Unit 42LUVH025N 42LUVH035N...
Page 12: ...10 42LUVH045N 5 2 Outdoor Unit 38LUVH025N 38LUVH035N...
Page 13: ...11 38LUVH045N...
Page 42: ...40...