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Pump down procedure
When refrigerant recovery is difficult due to the large amount of refrigerant
1. Prepare manifold gauge, scale and an empty refrigerant vessel.
2. As shown below, connect the middle hose of manifold gauge to the refrigerant vessel and then connect the
both ends of manifold gauge to the outdoor unit service valve individually. (Valve of refrigerant vessel and Low
pressure side valve must be closed and the high pressure side valve must be open.)
3. Start refrigerant recovery operation by pressing K2 button one time.
4. After operating for 10 minutes, open the valve of refrigerant vessel and fill it with refrigerant.
5. Close the valve of refrigerant vessel when sufficient refrigerant is filled.
6. Close the liquid service valve immediately. When the low pressure falls down lower than 0, close the gas service
valve.
7. Stop the operation by pressing reset button.
Low pressure side
Service port
32
Manifold gauge
High pressure side
An empty
refrigerant
vessel
scale
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