Modern Robinair machines, particularly the AC Pro series, track filter saturation internally. They calculate when a filter needs changing based on how much oil and refrigerant has passed through the system. However, when replacing the filter, the machine often prompts the user to reset the filter timer. This does not require inputting a serial number, but it relies on the premise that the new filter is fresh. If a technician installs an old filter found on a shelf—identified by an old date code/serial on the canister—the machine’s algorithm will be out of sync with reality, leading to potential contamination of the refrigerant tank.
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S/N: RAI-2315-0422-01
The filter is a cylindrical metal canister, approximately 4–6 inches long and 2–3 inches in diameter. It is located in the refrigerant flow path, often near the recovery compressor. Follow the large diameter hoses from the service ports. robinair filter serial number