Important Safety Instructions; Specifications - JUKI LBH-1790A Series Instruction Manual

I. IMPORTANT SAFETY INSTRUCTIONS
1) Never operate the machine unless the oiling tank has been properly lubricated.
2) Be sure to remove any dust from the hook or bobbin thread cutting knife section at the end of the day,
and check the amount of oil remaining.
3) Be sure to return the activating pedal to the home position after the machine has started to run.
4) This machine is provided with a machine head tilt detector so that it cannot be operated in the state
that the machine head is tilted. When operating this sewing machine, turn the power switch ON after
setting the sewing machine to the bed base properly.
II. SPECIFICATIONS
Main specifications of the LBH-1790A computer-controlled, lockstitch buttonholing machine

1. Specifications

Sewing speed Standard speed : 3,600 sti/min (Max. : 4,200 sti/min) (Max. : 3,300 sti/min when dry hook is used)
Needle DPX5 #11J to #14J
Hook DP type full-rotary hook
Needle rocking Drive by stepping motor
drive method
Feed drive method Drive by stepping motor
Presser lifting drive Drive by stepping motor
method
Lift of presser foot 14 mm (Optional setting available) Max. : 17 mm (At the time of needle up by reverse run)
Cloth cutting knife Motor-driven crank system
drive method
Standard sewing 31 kinds
shape
Number of patterns 99 patterns
stored in memory
Motor used 3-phase 200 to 240 V, 370 VA
Noise - Equivalent continuous emission sound pressure level (L
A-weighted value of 81.0 dB ; (Includes ; K
11204 GR2 at 3,600 sti/min.
Subclass
Buttonholing of cloth such as men's shirts, blouses,
Major application
work uniforms, ladies' wear, etc.
Buttonholing size
pA
– 1 –
S
Standard : Max. 5 mm
Special type part : Max. 10 mm
Knife size used :
6.4 to 31.8 mm (1/4' to 1-1/4')
Buttonholing sewing length
Standard : Max. 41 mm
Special type part : Max. 120 mm
) at the workstation :
pA
= 2.5 dB) ; according to ISO 10821- C.6.3 -ISO