Typical melter drain valve
Filter
10-2
Part 1079832_04
E 2015 Nordson Corporation
Filter Service
This part of Section 10 provides filter‐related service procedures.
Relieving System Pressure
System pressure must be relieved before you can safely proceed with many
of the maintenance, troubleshooting, and repair procedures in this manual.
Follow this procedure whenever you need to relieve system pressure.
WARNING! Risk of burns. Failure to relieve system pressure can cause hot
adhesive to spray from a connecting point. Relieve system pressure before
loosening or removing a hose, module, or any other part of the hot melt
system. Wear heat‐protective clothing, safety goggles (ANSI Z87.1 or
equivalent), and safety gloves.
1. Stop the melter pump(s). Refer to the melter manual.
2. Shut off the module‐actuating air.
3. Place drain pans under all melter and applicator drain valves. To
determine the location of the drain valves on your applicator, refer to the
applicator reference drawing in Applicator‐Specific Reference Drawings
in Section 8, Parts.
4. Open the melter drain valve. Refer to the melter manual as needed.
5. See Figure 10‐2. Open an applicator drain valve by turning the drain
valve screw counterclockwise. Some adhesive will drain from the
applicator.
6. Trigger all modules at the solenoid valves.
7. Close the applicator and melter drain valves.