I BFM-1 Series Air Damper for Temperature Control

　　I BFM-1 Series Air Damper for Temperature Control

　　BFM-1 series air damper, driven by step motor, is a newly developed electric air damper for refrigerator application. It can be controlled by the mainboard to open and close at any angle. Compared with traditional capsule mechanical air damper and reed electric air damper, BFM-1 has the advantages of simple structure, accurate action and great reliability etc. It is the latest control component for forced air cooling frost-free refrigerators.

　　II External Dimensions Drawing

　　III Main Technical Specifications

　　Voltage Rating：DC12±1V　　Phase Resistance：415±45Ω/phase

　　Frequency：300PPS　　　　　Driving Type: two-phase two-stage driving

　　Step Number: door opening-door closing (90 degrees): 1850 steps (including locking)

　　door opening-door closing (90 degrees): 1750 steps (no locking) and 1850 steps (starting from the locking position)

　　Input Current: ≤60mA Starting Torque: ≥0.05N·m(5.1gf·m)

　　Output Torque：≥0.1N·m(10.2gf·m)

　　Noise Level: rotating state: initial: <35db(A)

　　after test: <50db(A)

　　locking state: initial: <40db(A)

　　after test: <60db(A)

　　IV Circuit Type

	No.	CW Direction of operation		Step Number
		Terminal No.	Color	1	2	3	4
	1	A	Blue	+	-	-	+
	2	B	Red	+	+	-	-
	3	-A	White	-	+	+	-
	4	- B	Yellow	-	-	+	+

　　V Products of special specifications can be custom made upon request.