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Read Before Servicing ]
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HWE0913A
GB
[6] Brazing
No changes have been made in the brazing procedures. Perform brazing with special care to keep foreign objects (such as oxide
scale, water, and dust) out of the refrigerant system.
Example: Inside the brazed connection
1. Items to be strictly observed
Do not conduct refrigerant piping work outdoors if raining.
Use inert gas during brazing.
Use a brazing material (BCuP-3) that requires no flux when brazing between copper pipes or between a copper pipe and
copper coupling.
If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends.
2. Reasons
The new refrigerating machine oil is 10 times as hygroscopic as the conventional oil and is more likely to cause unit failure if
water infiltrates into the system.
Flux generally contains chloride. Residual flux in the refrigerant circuit will cause sludge to form.
3. Notes
Do not use commercially available antioxidants because they may cause the pipes to corrode or refrigerating machine oil to
deteriorate.
Use of no inert gas during brazing
Use of inert gas during brazing
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Страница 36: ... II Restrictions 27 HWE0913A GB ...
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Страница 94: ... III Outdoor Unit Components 85 HWE0913A GB 2 RELAY BOARD RELAY 4 board 3 RELAY BOARD RELAY 10 board ...
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Страница 124: ... 115 HWE0913A GB VI Refrigerant Circuit 1 Refrigerant Circuit Diagram 117 2 Principal Parts and Functions 126 ...
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Страница 363: ... 354 IX Troubleshooting GB HWE0913A ...
Страница 364: ... 355 HWE0913A GB X LED Monitor Display on the Outdoor Unit Board 1 How to Read the LED on the Service Monitor 357 ...
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