4-3
Operation and Maintenance
© 2024 Nordson Corporation
1044131-06
System Flushing
See Figure 4-2.
WARNING: High-Pressure Fluid Injection Hazard: Always relieve system pressure
before removing or installing spray device nozzles, disconnecting hoses, or making any
the air pressure to the pump, then trigger the spray devices or open the circulation kit
drain valve.
1. Remove the siphon rod (6) from the coating material (5) and run the pump until it
2.
spray devices.
3. Remove the spray device nozzles.
4. Set up a drain arrangement:
a grounded waste container (13).
Circulating system: Put the drain rod (12) in a grounded waste container (13), close the
circulation valve (10), and open the drain valve (11).
5. Put the siphon rod in the cleaning solution. Run the pump until no traces of the old
coating material can be seen in the cleaning solution. Stop the pump.
6. Flush the spray guns:
Circulating system: Open the circulation valve (10) and close the drain valve (11).
7. Remove the siphon rod from the cleaning solution and run the pump until it starts to
run away, then stop it.
8. Place the siphon rod in the new coating material, then start the pump and run it until
9.
10. Stop the pump, relieve the system pressure, and install the spray device nozzles.
11. Start the pump and trigger the spray devices. When the spray devices stop spitting
air, you can resume production.
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