When diagnosing furnace fan not turning on or intermittent blower issues

and pre-installed bearings within a rigid housing frame

leak-free transition

exceeding this may cause thermal overload or fuse failure in the control circuit

Lochinvar & A.O. Smith 100173793 Arm Assembly 324846-701 When diagnosing furnace fan notThe Lochinvar & A. O. Smith 100173793 Arm Assembly is a critical OEM replacement part engineered for high efficiency commercial boilers and heating systems. As a veteran grade gas air arm assembly, this component ensures the precise mechanical alignment necessary for optimal combustion and fluid regulation. Specifically designed for compatibility with Lochinvar Knight series models (including KBN, AWN, and SNA 500), this assembly facilitates the