Mastercool 69500 - RECOVERYMATE Recycling Module (Compatible with R134A Refrigerant)Mastercool 69500 Recoverymate speeds up the recovery process by removing unwanted moisture and separating oil from recovered refrigerant.Mastercool 69500 features a a 4-way ball valve manifold, a large capacity oil separator, and a high performance dryer to eliminate moisture.Draining Oil SeparatorWhen recovering and recycling refrigerant most oil that is removed from the A/C system will be retained in the oil separator. The oil should be drained out of separator after each use to prevent the mixing of different oils during recovery. After recovery / recycle operation, when a low residual pressure (5-10 PSI, .3-.7 bar) exists in the recovery/recycle unit, close valves 10 and 11. Put a small container under valve 9. With oil sperator standing vertically, very slowly open vavle 9. Oil collected by the oil sperator will drain into container. Close valve 9. Dispose of oil in an approved manner.Filter MaintenanceFilter should be changed on a regular basis. The frequency will depend on the condition of the refrigerants being recovered/recycle. One way to test for a dirty filter is to compare the pressure readings on low side gauge of manifold with low side guage recovery machine. With recovery/recycle system circulation refrigerant gauge readings should be within 10psi (.7 bar) of each other. A pressure difference higher than this indicates a dirty filter.Moisture Indicating Sight GlassThe moisture indicating sight glass changes color depending on the amount of the moisture present in recycle system. As mentioned previously in recycle system should be kept sealed to prevent moisture from outside of system contaminating indicating sight glass. Replacement of sight glass is required when recycle system is evacuated to a high vacuum and sight glass does not indicted a dry condition.