– 128 –
10. MF-7900-E11
(1) Specifications
(2) Adjustment procedure of engagement amount of knives
Model
MF-7900-E11
Class name
Right-hand fabric undertrimmer for pre-closed elastic attaching with tension roller
Application
Pre-closed waist elastic attaching of men's brief, trunks, etc.
(Waist elastic width up to 40 mm)
Sewing speed
Max. 5,000 sti/min (provided with PL12 or PL13) (at the time of intermittent operation)
Speed of stitch at the delivery. 4,000 sti/min (provided with PL12 or PL13)
(at the time of intermittent operation)
Needle
gauge
3-needle 5.6 mm, 6.4 mm
2-needle 4.0 mm
Feed ratio
1 : 0.7 to 1 : 1 (Pitch less than 2.5 mm)
Stitch length
0.9 to 3.6 mm (Adjustable up to 4.5 mm)
Noise
- Equivalent continuous emission sound pressure level (L
pA
) at the workstation:
A-weighted value of 78.5 dB; (Includes K
pA
= 2.5 dB); according to ISO 10821- C.6.2
-ISO 11204 GR2 at 4,000 sti/min.
When adjusting the engagement, perform the work
after confirming regarding the height of counter knife
❸
that the upper surface of the counter knife
❸
is
flush with the upper surface of the throat plate or the
former is installed slightly lower than the latter.
Loosen clamping screw
❶
in the state that moving
knife
❷
comes down to its lowest position, and ad-
just the engagement amount of the moving knife
❷
and counter knife
❸
to approximately 0.5 mm.
❶
❸
0.5 mm
❸
❷
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
