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This switch is typically found mounted directly on the blower housing or the burner bulkhead
What causes a 160°F limit switch to trip
During HVAC troubleshooting
the T-4002-5018 is the correct requirement
TB Woods 4J-3/4 Coupler Flange This switch is typically foundThe TB Woods 4J 3 4 Coupler Flange is a Type J Sure Flex Plus power transmission component engineered for heavy duty industrial and HVAC applications. Manufactured from high strength sintered carbon steel using a powdered metal process, this Size 4 flange provides exceptional dimensional accuracy and uniform material properties. It features a precision 3 4" bore with a standard 3 16" x 3 32" keyseat and a primary setscrew positioned over the keyway
