Service Manual

If the amount of recovered refrigerant is available that was pulled out of outdoor unit which compressor

was replaced.

(When the refrigerant is recovered by refrigerant recovery machine, and its weight is measured.)

If the amount of recovered refrigerant from outdoor unit that compressor was replaced is not sure.

(When the refrigerant leakage was the case.)

>>> Once recover all units' refrigerant, and recharge the calculated amount of refrigerant (Original

amount and additional amount) again after vacuuming.

Note: To use the recovered refrigerant is not recommended in case of refrigerant leakage.

Always charge fresh refrigerant with correct amount for the system after repairing.

>>> Perform vacuuming of repaired outdoor unit thoroughly, and add the refrigerant with the recovered

amount.

2. Refrigerant charging after the compressor replacement.

Connect the high pressure service port of the broken master unit and the low pressure pipe of the broken

master unit by pressure gauge.

>>> Refrigerant release from the heat exchanger of the broken master unit.

(Refrigerant is removed until refrigerant shortage is resolved)

Reuse the refrigerant of the broken master unit.

Broken

master unit

Substitutional

master unit

Slave

unit #1

All 3 Way-Valves Close

Open and adjust

High pressure (service port)

Liquid

Hp Gas

Lp Gas

Recover the remaining refrigerant in the broken master unit from the service port(s).

When new refrigerant is added to the operating system, check the weight of additional refrigerant,and

adjust the total refrigerant amout after repairing.

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