Specifications

NOTE: During installation the solenoid must be adjusted properly. If you did not
adhere to the previous NOTICE, or if for some other reason, the
adjustment for the solenoid is not correct, Refer to the following jump
stitch solenoid adjustment procedure for the proper adjustments.
Adjustment
If a jump stitch solenoid has been replaced, you may have to perform one or more
of the following adjustment procedures. The needle case must be removed to
perform these adjustments. See the procedure for needle case removal in this
section.
Plunger Positioning
During the jump stitch solenoid replacement procedure, you were to count the
number of threads that are showing beyond the solenoid bracket. If this was not
done, the following procedure will help position the solenoid plunger properly.
There are two plunger positions of concern:
Plunger
Position 1
The jump stitch solenoid must be positioned so that the plunger is close enough to
actuate the needle bar driver reciprocator when the solenoid is engaged (energized).
Plunger
Position 2
The plunger also must not be contacting the reciprocator during normal
embroidery, when the solenoid is relaxed or not energized.
A typical dimension for the gap between the relaxed solenoid plunger and needle
bar driver reciprocator is approximately 0.015 to 0.045 inches (0.4 to 1.1 mm).
Refer to Figure 3-15 for an illustration of the gap location.
To obtain this gap, loosen the locking nut on the solenoid and rotate the solenoid
inside the bracket until the gap is proper. Tighten the locking nut.
Needle Bar Driver
Reciprocator
Jump Stitch
Solenoid
Gap 0.015"-
0.045"
Drawing Not To Scale
locking nut
solenoid
bracket
Figure 3 - 15
3 - 16 Jump Stitch Solenoid
EMT 10T Technical Manual Melco Embroidery Systems