Brother International KE-430D Instruction Manual - English - Page 34

4. PREPARATION BEFORE SEWING 4-5-2. Upper thread tension Stronger Weaker Turn the tension nut (1) (main tension) to adjust the tension as appropriate for the material being sewn. Furthermore, turn the tension nut (2) (sub-tension) to adjust the remaining length of upper thread to 35 - 40 mm, when the thread take-up lever is not used. Stronger Weaker 4434Q [Reference thread tension] Use Upper thread Lower thread Upper thread tension (N) Lower thread tension (N) Pre-tension (N) Ordinary materials (-01) #50 or equivalent #60 or equivalent KE-430D Knitted materials (-07) #60 or equivalent #80 or equivalent Foundation garments (-0F) #60 or equivalent #60 or equivalent 0.8 - 1.2 0.2 - 0.3 0.05 - 0.3 Needle DP x 5 #14 DP x 5 #9 Denim (-02) BE-438D #30 or equivalent #60 or equivalent #50 or equivalent #60 or equivalent 1.6 - 2.0 1.0 - 1.8 0.2 - 0.4 DP x 17NY #19 0.1 - 0.4 DP x 17NY #12 [Guide to maximum sewing speed for KE-430D] Max. sewing speed (rpm) Use Standard hook Large hook 8 layers of denim 3,200 2,500 12 layers of denim 2,700 Ordinary materials 2,700 Knitted materials Foundation garments 2,500 Note: The thread may break due to heat under some sewing conditions. If this happens, reduce the sewing speed, or use the liquid cooling tank. 2,500 27 KE-430D, BE-438D