Airwell YEVFD Series, Service Manual

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Note:
■ To prevent the different oil into the pipe, please use the special tool for R410A, especially for gauge manifold and
charging hose.
■ Mark the refrigerant type in different colour on the tank. R410A is pink.
■ Must not use the charging cylinder, because the R410A will change when transferring to the cylinder.
■ When charging refrigerant, the refrigerant should be taken out from the tank as liquid state.
■ Mark the counted refrigerant volume due to the distributing pipe length on the label.
■ Gas pipe and liquid pipe should be heat insulated separately.
■ The material for gas pipe should endure the high temperature over 120 .
■ That for liquid pipe should be over 70 .
■ The material thickness should be over 10mm, when ambient temp. is 30 ,
and the relative humidity is over 80%, the material thickness should be over 20mm.
• In operation, the pipe will vibrate and expand or shrink.
If not being fixed, the refrigerant will focus on one part to cause the broken pipe.
• To prevent the central stress, fix the pipe for every 2-3m.
• The material should cling the pipe closely without gap, then be
wrapped with adhesive tape. The connection wire can not be put
together with the heat insulation material and should be far at least
20cm.
Heat insulation
Fix the refrigerant pipe
Connection wire
over 20cm
Adhesive tape
Gas pipe
Heat insulator
Liquid pipe
GWP: 2088
The product contains fluorinated greenhouse gases and its functioning relies upon such gases.
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