Revised 09/2005
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PNEUMATICS
6.0 PNEUMATICS
The pneumatics are switched by a bank of solenoids mounted on the rear out side of the electrical
control box. This bank of solenoids control the following:
-
Jig Flap
-
Stitch Size Adjuster 1
-
Stitch Size Adjuster 2
-
Jig Drive/Presser Foot
-
Knife
-
Jig Eject
-
Jig Alignment
-
Jig Drive Clamp
Air is normally on the B lines and is switched to A line when the solenoid is energized. Refer to the
pneumatics diagram on page 1-68
6.1 S1 JIG FLAP
When the solenoid is energized this allows air through line A1 causing jig flap to lift.
6.2
S3 STITCH SIZE ADJUSTERS 1 & 2
When both stitch size adjuster 1 and 2 are energized the full stitch is achieved. When stitch size
adjuster 1 is energized and stitch size adjuster 2 is de-energized then a medium dense is achieved.
When both stitch size adjuster 1 and 2 are de-energized then a small dense is achieved. See section
4.2 Stitch Size Adjustment.
6.3
S4 JIG DRIVE/PRESSER FOOT
When this solenoid is energized air flows through line A4 causing the jig drive cylinder to operate
and grip the jig. When the solenoid is de-energized air flows through both lines of B4 causing drive
to return and presser foot to lift. There is no air to presser foot through line A4, as this is a spring
return cylinder.
6.4
S5 KNIFE
When this solenoid is energized air flows thro’ line A5 causing the knife to engage. When the sole-
noid is de-energized air through line B5 causes the knife to return to up position.
6.5
S6 JIG EJECT
When this solenoid is energized air flows thro’ line A6 causing the jig cylinder to operate. When the
solenoid is de-energized air through line B6 causes the jig cylinder to return to ‘A’ position.
6.6
WASTE DISPOSAL
Ensure jets are directed in area of cut-out, otherwise trimmed material will not be directed down
chute.