Daewoo RFS-26D1 Series Guía de instalación descargar pdf (Pagina 58)

1. Removal of residual

refrigerant.

PrecautionsItems

9-3. Practical Work for Heavy Repair

2. Nitrogen blowing

welding.

※ KEYPOINTING

Welding without nitrogen blowing produces oxidized scales inside

a pipe, Which affect on performance and reliability of a product.

1) Remove residual refrigerant more than 5 minutes later after

turning off the refrigerator. ( If not, compressor oil may leak inside.)

2) Remove retained refrigerant slowly by cutting first high pressure

side (dryer part) with a nipper and then cut low pressure side.

* When replacing a dryer:

Weld ①and② parts by blowing nitrogen (0.1~0.2kg/cm2) to high

pressure side after assembling a dryer.

* When replacing a compressor:

Weld ③and④ parts by blowing nitrogen to the low pressure side.

Note) For other parts, nitrogen blowing is not necessary because it

does not produce oxidized scales inside pipe because of its short

welding time.

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Daewoo RFS-26D1 Series Guía de instalación Pagina 58