Title: +175=737.001_IK001_Brukermanual for Refra varmepumpe.Produktinformasjon.pdf
Evacuation recommend running the following techniques: 1. Vacuum system to 200 Pa (1,5 mm. Hg. Art.) 2. Add this amount of nitrogen, the pressure increased to atmospheric pressure. 3. Repeat the steps described in section 1-2. 4. Vacuum system until it reaches the vacuum 66.5 Pa.With this method of moisture and air remaining in the circuit, are absorbed by the dry nitrogen used to relieve the vacuum, and after a three-time repeat the above operation is almost completely removed from the system. If the circuit is present burnt oil or contamination caused by the compressor motor burnout, before evacuation system, it is recommended that you thoroughly cleaned using special filters in the liquid line and suction, with an appropriate inserts.The loss of refrigerant due to leakage can lead to loss of oil. During the operation of the unit, do check the oil level in the oil. Loss of coolant - a leak may cause loss of oil. At the time of installation, check the oil level in compressors.