Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
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When it is necessary to add refrigerant to a system after a loss it indicates
that there is a leak in the system. The leak must be located, repaired and the
system leak tested. If the leak is found to be on the low side of the system the
repair can be made after the system has been ‘pumped down’ to a balance in
pressure. Do not draw in any air which contains moisture, especially where
hygroscopic ester oils are concerned, (for example R134a). Some oils are not
affected and accept the ingress of air and moisture, recovering after a vacuum
is drawn with a recovery unit....
Nội dung trích xuất từ tài liệu:
Handling Procedures for Equipment Contaminated with Depleted Uranium or Radioactive Commodities
