Technical Manual & Parts Lists
13
Stepper Control Boxes
There are two stepping motor boxes located under the table.
(Fig. 4) The box with the 10-turn adjustable potentiometer on the
front controls the Ruffler and the box without controls the Puller.
The Ruffler box has three Thumbwheels on the front which
are set to synchronize the Ruffler to the sewing head. The number is
proportional to the stitch LENGTH and is not affected by sewing
speed. The 10-turn potentiometer is used to set the speed of the
Ruffler during the feed in to pleat and feed out to make the next
ruffle. It is set to maximum and is locked in place by a small locking
lever. Unlock to adjust.
The Puller box has three Thumbwheels on the front which are
set to synchronize the puller to the sewing head. The number is
proportional to the stitch LENGTH and is not affected by sewing
speed
Each box has its own on/off switch on the back
where the power cord plugs in. Leave this switch on all
the time.
Note: The on/off switch only switches one line and does not make the box
safe to work on. Always disconnect the main power cord before servicing the
control box.
Efka Control Boxes
The sewing machine is powered by the Efka motor
controller located under the table. It has its own on/off
switch which should be left on all the time. It also has some
small buttons and LED's on the front to indicate the enabled
functions. The only LED that should be on is the second to
last from the bottom which sets the control to stop the
machine needle down at neutral treadle and needle up after
full heal back. The functions can be changed upon power up
or after a full heal back. The control box has been
preprogrammed to operate with the Ruffler. If the box were
replaced, the new box would need to be programmed
according to the included parameter list in order to function
properly. Notice that the sewing head does not stop at normal
needle up (lockstitch heads) position after full heal back, but
stops at needle top dead center to allow more room for
loading thicker material (the head actually turns in reverse
for a moment).
Summary of Contents for 1335MDS
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Page 78: ...Technical Manual Parts Lists 72 1335MDS WD Wiring Diagram 125650C ...
Page 79: ...Technical Manual Parts Lists 73 1335MDS WD1 Wiring Diagram 125573B ...
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