Valco Cincinnati VC350A, Manual

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Section 10 — Troubleshooting VC350A Flexoseal
®
System
Valco Cincinnati 10-2
Problem Possible Cause Possible Solution
Glue Pattern, continued
6. There is an interruption
of the glue pattern on
the perforation of the
product. 6a. Glue pattern is too close to the
perforation
6a. Shorten the glue pattern.
7. Glue pattern is poor. 7a. Air bubbles are present in the glue
system.
§
Run adhesive through the glue
line to purge air from the system
§
Flush system
8. The glue pattern begins
thick, but then trails off. 8a. Angle of the applicator head is too
steep.
8b. Air pressure to the 3-way valve is
too high.
8a. Adjust angle to 35 degrees.
8b. Lower the air pressure to 25 psi
(2.7 bar) higher than the highest
operating glue pressure.
9. The glue pattern begins
normally, but then trails
off. 9a. Angle of the applicator head is not
steep enough.
9b. There is a worn O-ring in the
swivel fitting.
9a. Adjust angle to 35 degrees.
9b. Replace O-ring.
10. The glue pattern
consists of drops of glue
with trailing.
10a. Contact between the product and
the spring guide is poor.
10a. Increase the tension of the
spring.
11. There are differences in
glue stripes.
11a. The glue lap crusher setting too
narrow.
11a. The glue station is not in line
with the product.
12. Good pattern with
trailing.
12a. Glue pressure is too high. 12a. Ensure that the pressure is 10-
15 psi (1.7-2 bar).
13. Trailing (glue pattern is
applied past the point of
desired shutoff).
13a. Shutoff point not set correctly
13b. Air is present in glue lines
13c. Applicator head O-ring is
missing or worn
13d. Dirty solenoid air valve
13a. Adjust front-panel switches.
13b. Purge air from glue lines.
13c. Replace O-ring
13d. Clean the solenoid air valve.
14. Good pattern position at
slow parent machine
speed. Delayed pattern
at higher speed.
14a. Glue may be present in the air
solenoid valve.
14a. Change air solenoid. Reset
settings.
15. Good pattern at slow
parent machine speed;
thin pattern (not enough
glue) at higher speed.
15a. Insufficient glue pressure. 15a. Increase glue pressure, using
the glue pressure knob on the
front panel of the VC350A.