Midea MOB01-09HFN8-QRD6GW, Installation Manual

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CAUTION
• Refrigerant charging must be performed after wiring, vacuuming and the leak test.
• DO NOT exceed the maximum allowable quantity of refrigerant or overcharge the system. Doing so can damage
or impact the unit’s function.
• Charging with unsuitable substances may cause explosions or accidents. Ensure that the appropriate refrigerant is
used.
• Refrigerant containers must be opened slowly. Always use protective gear when charging the system.
Air
E
vacuation
• DO NOT mix refrigerant types.
Refrigerant may only be charged after performed the vacuum drying process.
Always use gloves and glasses to protect your hands and eyes during the charge work.
Use electronic scale or fluid infusion apparatus to weight refrigerant to be recharged. Be sure to avoid
extra refrigerant charged, it may cause liquid hammer of the compressor or protections.
Use supplementing flexible pipe to connect refrigerant cylinder, pressure gauge and outdoor unit. And
The refrigerant should be charged in liquid state. Before recharging, The air in the flexible pipe and
manifold gauge should be exhausted.
After finished refrigerant recharge process, check whether there is refrigerant leakage at the connection
joint part.(Using gas leakage detector or soap water to detect).
Moooo
Min. Max .
Note :
Some systems require additional charging depending on pipe lengths
The additional refrigerant to be charged can be calculated using the following
Table below.
9
Refrigerant
Additional Charge

Page
26

5 Meter
5 Meter
R32 A dditional Refrigerant Charge
R410a Additional Refrigerant Charge
Model Shipment Charge Charged To Additional Charge
18
2
Kg 30 g/m
24 2.4
Kg 30 g/m
09 1
.
35
Kg 5 Meter 15 g/m
12
1.5
Kg 5 Meter
30
g/m