Pump
B 2-5
E 2000 Nordson Corporation
All rights reserved
41-3000
Issued 11/00
B2EN-02-[3-PUMP]-5
Problem Corrective ActionPossible Cause
10. Adhesive drooling from gun Guns not applying adhesive properly Refer to the gun manual to
troubleshoot gun problems.
11. Cartons popping open Adhesive not cooling fast enough Decrease hydraulic pressure to
decrease the bead size. Decrease
the operating temperature setpoints
slightly. Reduce the line speed
through the compression section.
Increase the distance between the
nozzles and the product. Increase
the distance between bead
application and bead compression.
Increase the length of the
compression section. Cool the
product. Use a lower-flow nozzle.
Use a stitched bead pattern.
Adhesive open time too long Change to an adhesive with a shorter
open time.
Adhesive cooling too fast Increase the hydraulic pressure to
increase the bead size. Increase the
operating temperature setpoints
slightly. Decrease the distance
between the nozzles and the product.
Decrease the distance between bead
application and bead compression.
Heat the adhesive. Use a higher-flow
nozzle. Avoid stitched bead patterns.
Protect the gun or bead from cold air.
Adhesive deposit shearing Check for twisting or other adverse
movement during the compression
section.
12. Adhesive fuming or
smoking
Adhesive in tank too hot Check the tank operating temperature
setpoint and adjust it as necessary.
Unstable adhesive Keep the lid closed when the melter
is operating. Change to a more
stable adhesive.
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