When filling a refrigerant cylinder, never 19. completely fill it. Always leave space for expansion. If the cylinder was completely filled and the temperatures increases, the hydraulic pressure with its tremendous force would result to cylinder bursting accidents. One of the most important requirements when 20. filling the air conditioning system is to use clean refrigerant. Any foreign substances – including air, moisture and dirt - in the air conditioning circuit influence temperature and pressure of the system. This will have an adverse effect on the operation of the system. In addition, these foreign substances can cause defects such as failure of the compressor due to excessive wear. FATC 13
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