FISCHBEIN
®
MODELS 100 & 101 EMPRESS™ SERIES SEWING HEAD
OPERATOR’S MANUAL
REV. H 2005 / 11
32
Adjustments and Maintenance
1. A regulator/filter assembly is required and is
offered as an option. The air pressure to the air
knife must be 80-PSI (5,5 bar) minimum.
2. If the thread is not cut off cleanly, it is usually
the result of a dull knife set or a maladjusted
fixed knife blade (
G
). (
Illustration 33
)
3. Adjust the flow control valves (I) on the air
cylinder (
O
) to provide a smooth operation of the
air knife. (
Illustration 31
) Turning out
(counterclockwise) the adjustment screw on the
valve will increase the speed of the air knife. The valves (
I
) are adjusted at the factory for
maximum airflow and the fastest cut.
4. To replace the blades, first remove the side cover (
F
), (
Illustration 31
). Remove screws
P
and
W
to remove the fixed blade. Remove screws
V
to remove the movable blade (
K
).
Replace the old blades with new. (#
31112
and #
31113
)
5. The cutting edges of the fixed blade (
G
) and movable blade
(
K
) must contact each other. If they do not, the cut edges of
the thread will be frayed, or the thread will not be cut
completely through. The four M4 set screws (
J
) provide this
adjustment. (
Illustration 33
) Three are in the fixed blade
(
G
), and one is in the lower fixed blade bracket (
Q
). Adjust
the screws (
J
) until there is contact between the cutting
edges. There may be a small gap along the back edges of the
two knife blades as a result.
6. The contact between the two knives should periodically be
coated with a light layer of grease. Wheel bearing grease is
used at the factory.
7. The tip of the movable knife blade (
K
) must not extend
beyond the cutting edge of the fixed knife blade (
G
). If it
does, loosen nut (
R
) on the air cylinder (
O
). The air cylinder
(
O
) must be in the retracted position as shown in
Illustration
31
. Screw the shaft (
S
) of air cylinder (
O
) in or out until the
tip of the movable knife is retracted beyond the cutting edge of the fixed blade (
G
).
8. Further assistance is available from your Fischbein representative or by calling the Technical
Service Department at the Fischbein Company. (
page 2
)
Illustration 32
Illustration 33
