| Code | Meaning | |------|---------| | 2315 | 2023, week 15 | | 2410 | 2024, week 10 |

| Machine S/N | Filter Model | Filter Lot/Date Code | Date Installed | Hours Used | Next Due | |-------------|--------------|----------------------|----------------|------------|-----------| | R34788-12345 | RA-34788-FIL | 2410 (2024 week 10) | 2024-03-10 | 120 | 2024-04-10 |

Phone: +1-800-822-5561 Email: techsupport@robinair.com Have ready: Machine model, machine serial number, filter code (exact characters).

Robinair is a leading manufacturer of A/C service equipment for automotive and HVAC applications. Their devices (e.g., 34788NI, 34988NI, AC1234, CoolTech, RG3, etc.) use replaceable filter driers and particulate filters. A common point of confusion is the concept of a “filter serial number.” Unlike the machine’s own serial number, filters have lot codes , date codes , and model numbers that serve similar tracking and safety purposes.