CONSEW 255RATCWL(E)-1, 255RBATCL, 339RBATCL, 339RBTCWL(E)-1 Instruction Manual
CONTENTS
PRECAUTIONS BEFORE STARTING OPERATION ------------------------------------- 1 PREPARATION FOR OPERATION
1. Adjustment of needle bar stop position --------------------------------------------------------- 2
CAUTIONS ON USE
1. Oiling ------------------------------------------------------------------------------------------ 2
2. Adjustment of oiling to rotating hook
3. Cautions on operation --------------------------------------------------------------------------- 3
OPERATION
1. Installation of needles ---------------------------------------------------------------------------- 3
2. Winding of bobbin threa d
3. Selection of thread
4. Threading of needle threads
5. Adjustment of feed (stitch) length and stitch reversing (touch-back)
6. Setting of bobbin
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7. Threading of bobbin threads
8. Tension adjustment of bobbin threads
9. Balance of thread tension
10. Needle thread tension
11. Adjustment of presser foot pressure
12. Timing between rotating hook motion and needle motion
13. Adjustment of feed dog height
14. Relationshi p between rotating hook motion and take-up lever motion
15. Relationship between hook motion and opener motion
16. Relationship between needle motion and feed dog motion
17. Safety clutch device
18. Upper feed adjustment (needle side)
19. Outside presser foot and inside presser vertical stroke adjustment
20. Adjustment of forward/backward stitch length
21. Installation of movable knife
22. Adjustment of thread trimmer cam
23. Adjustment of needle threads tension release assembly
24. Adjustment of scissoring pressure of movable knife and fixed knife
25. Sharpening of fixed knife
26. Adjustment for change of needle to needle distance
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SPECIFICATIONS-------------------------------------------------------------------------------- 16
PRECAUTIONS BEFORE STARTING OPERATION
1. Safety precautions
1) When turning the power on, keep your hands and fingers away from the area around/under the
needle and the area around the pulley.
2) Power must be turned off when the machine is not used, or when the operator leaves his/her seat.
3) The power must be turned off before tilting the machine head, installing or removing the “V” belt,
adjusting the machine, or when replacing.
4) Avoid placing fingers, hairs, bars etc. near the pulley, “V” belt, bobbin winder pulley, or motor
when the machine is operation. Injury could result.
5) Do not insert fingers into the thread take-up cover, under/round the needle, or pulley when the
machine is in operation.
6) If a belt cover, finger guard, and/or eye guard are installed, do not operate the machine without
these safety devices.
2. Precaution before Starting Operation
1) If the machine’s oil pan has an oil sump, never operate the machine before filling it.
2) If the machine is lubricated by a drop oiler, never operate the machine before lubricating.
3) When a new sewing machine is first turned on, verify the rotational direction of the pulley with
the power on. (the pulley should rotate counterclockwise when viewed from the pulley.)
4) Verify the voltage and (single or three) phase with those given on the motor nameplate.
3. Precaution for Operating Conditions
1) Avoid using the machine at abnormally high temperature (35℃ or higher) or low temperature (5
℃or lower). Otherwise, machine failure may result.
2) Avoid using the machine in dusty conditions.
3) Avoid using the machine in areas where too much electrical noise, resulted from the
high-frequency welder and others, is generated.
— 1 —
PREPARATION FOR OPERATION
1． Adjustment of needle bar stop position
1）、When the pedal is kicked down by heel, the
machine stops at “UP”
2）、When the pedal is “Neutral” the machine stops
at “Down”
CAUTIONS ON USE
1. Oiling
When a new sewing machine is used for the first time, or sewing machine left out of use for
considerably long time is used again, replenish a suitable amount of oil to the portions indicated by
arrow in the below figure.
— 2 —
2. Adjustment of oiling to rotating hook
3. Cautions on operation
a) When the power is turned on or off, keep
foot away from the pedal.
b) It should be noted that the brake may not
work when the power is interrupted or power
failure occurs during sewing machine operation.
c) Since dust in the control box might cause
malfunction or control troubles, be sure to keep the control box cover close during operation.
Do not apply a multimeter to the control circuit for checking; otherwise voltage of multimeter
d)
might damage semiconductor components in the circuit.
OPERATION
1． Installation of needles
Note: Before installing the needles, be sure to turn off the power.
— 3 —
2． Winding of bobbin thread
Note: When bobbin thread is wound, keep the presser foot lifted.
Adjustment:
3． Selection of thread
It is recommended to use “S” twist thread in the
left needle (viewed from front), and “Z’ twist
thread in the right needle. When discriminate
use of needle threads is impossible, use “Z” twist
thread in both the needles.
For bobbin thread, “S” twist thread as well as “Z”
twist thread can be used.
4． Threading of needle threads
a) Pass each needle thread through thread guide A
Note: When thin slippery thread (polyester Thread or
filament thread, for example) is used pass the
thread through thread guide B as well.
b) With the take-up lever located at the upper most position,
pass each needle thread in the order shown in the
following figure.
N
ote: Pressing the upper thread loosening button shown in the figure below
opens the saucer of the upper thread tension adjuster, and the upper thread can easily pulled out.
— 4 —
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