Troubleshooting
6-5
Part 1079832_04
E 2015 Nordson Corporation
Adhesive Leakage Problems
Refer to this troubleshooting table if you find adhesive leaks.
Problem Possible Cause Corrective Action
1. Leaks between the
adhesive manifold and
the module
Insufficient torque on module
screws
Tighten the module screws. Refer to
the module replacement procedure in
Section 9, Module.
Damaged or worn O-rings on
module
Replace the O-rings.
2. Leaks at module stem
Adhesive seal failure Replace the module. Refer to the
module replacement procedure in
Section 9, Module.
3. Leaks at nozzle
System pressure too high Decrease the system pressure. Refer
to the melter manual.
Nozzle incorrectly installed Check the nozzle installation. Refer to
the nozzle installation procedures in
Section 9, Module.
Damaged, worn, or missing O-ring Replace or install the O-ring.
4. Leaks at hose
connection
Loose hose connection Tighten the connection.
Failed hose fitting O-ring Replace the hose fitting O-ring. Refer
to the procedure for replacing the
O-ring in the melter manual.