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LEAK TEST AND VACUUM
14
Low
pressure
Ⓑ
Ⓐ Manifold gauge
Ⓑ Low-tension handle
Ⓒ High-tension handle
Ⓓ Service valve
Ⓔ Liquid pipe
Ⓕ Gas pipe
Ⓖ Service port
Ⓗ 3-direction joint
- Perform a calculation to add a precise amount of refrigerant.
- Adding an imprecise amount of refrigerant could cause problems for the product.
- If the amount of added refrigerant goes beyond of ±10%, burning of the compressor and
poor performance of the indoor unit could occur.
WARNING
!
• Pipes that must be vacuumed: gas pipe, liquid pipe
• When installing or moving the product to another location, do not fill with any refrigerants
besides the regulated refrigerant (R410A).
• Mixing the original refrigerant with a different refrigerant can cause malfunctioning or
damage to the refrigerant cycle.
• If injecting gaseous R410A, you should change the refrigerant composition you use to a
liquid form.
Ⓓ
High
pressure
Ⓐ
Ⓒ
Ⓖ
Ⓗ
Ⓔ
Ⓕ
Ⓘ
Ⓜ
Ⓙ
Ⓚ
Ⓛ
Ⓘ Valve
Ⓙ Valve
Ⓚ R410A cylinder
Ⓛ Scale: using a gravimeter
Use one that measures up to 0.1 kg
If a high-density scale is unavailable, a
charging cylinder can be used.
Ⓜ vacuum pump
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