Title: Brukermanual for Refra varmepumpe.pdf
Replacing the filter - drier Replace the filter drier is recommended during routine servicing, as well as a sharp drop of pressure on him and / or the presence of bubbles in the sight glass at normal size of hypothermia. The maximum allowable pressure drop across the filter at 75% - 100% load circuit is 70kPa and 35 kPa at 25% -50% load. The filter-drier must also be replaced if the indicator sight glass indicates the presence of moisture in the circuit. In the first months of operation of the system replacement filter-drier is made, if the value of differential pressure on it exceeds the maximum allowed. In the operation of dirt and mechanical particles of heat exchangers, pipes, compressors and other system components come with the flow of refrigerant in the line of the liquid and trapped by the filter-dryer.