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This mechanical oil safety switch monitors the net oil pressure—the differential between the oil pump discharge and the crankcase suction pressure—to ensure internal bearings and journals remain properly lubricated during operation
40" WC trip point ensures accurate proofing of the power venter/inducer draft
Robust Construction: Built with a 48 frame size and NEMA standard specifications for industrial-grade durability
reliable straight-line regulation is critical for maintaining manifold pressure and burner efficiency
this genuine 100109816 switch ensures factory-spec combustion safety and eliminates the liability associated with generic alternatives
Lennox 17J62 Fan Blade 321894-709 This mechanical oil safety switchThe Lennox 17J62 Fan Blade is a precision engineered condenser fan blade designed for high static pressure applications in residential and light commercial HVAC systems. Featuring a 16 inch diameter and a 34 degree pitch, this 5 blade aluminum assembly is optimized for maximum CFM delivery while maintaining low acoustic signatures during high load cycles. This specific HVAC replacement fan blade utilizes a 1 2 inch bore for direct drive motor shafts
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