If you are searching for a "Robinair Filter Serial Number," you are likely looking for the (Standard Oil Filter) or 34247 (Drier).

: If you receive a "SERIAL NUMBER ERROR," the code may be invalid or already used in that unit. In rare cases, you may need an override code from Robinair Tech Support at 1-800-822-5561. Maintenance Requirements Filter Life

, track the amount of refrigerant processed (usually locking out after 150 lbs / 68 kg ). To continue using the machine, you must enter the filter serial number

Modern Robinair machines, such as the 34788NI or 34988NI, are programmed to lock down after filtering a specific amount of refrigerant (often 150 lbs / 68 kg) to protect the internal components from moisture and acid.