| To lubricate the compressor special property oil also flows in the refrigerant circuit. |
| The main properties are high dissolving power with refrigerant, good lubricating properties, acid-free and no humidity. |
| The poly-alkylene-glycol (PAG) oils suitable for refrigerant R 134a are strongly hygroscopic (water retentive) and cannot be mixed with other oils. Therefore to ensure protection against penetrating humidity immediately close opened cans. Refrigerant oil is contaminated by humidity and acids; it becomes dark, viscous and corrodes metals. |
Note