Title: +175=737.001_IK001_Brukermanual for Refra varmepumpe.Produktinformasjon.pdf
Check the status of Freon in the sight glass: 1. In the presence of bubbles in the sight glass is not enough refrigerant. 2. Lack of refrigerant causes the trigger operation. Add refrigerant.Maximum allowable pressure The entire plant must be designed and operated so that the maximum allowable pressure (PS) cannot be exceeded in any part of the plant (see name plate indications).Pressure relief valves are essential for receivers and condensers (pressure vessels) if: - it is to be expected that the maximum allowable pressure will be exceeded due to external heat sources (e.g. fire),or if: - the entire refrigerant charge of the plant is more than 90% of the pressure vessel's charge capacity at 20°C. Charge capacity means the volume between operationally lock-able valves before and after a pressure vessel. In case of two vessels being mounted in series, it is the volume of both vessels and the connecting pipe.