Nordson EP2, Руководство пользователя

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19 EP2 Pump System
© 2021 Nordson Corporation
1072608-04
Changing Coating Materials/Flushing the System
Use the tasks in the System Startup chart as required when changing materials.
Depending on your coating materials and application, you may be able to change coating
materials by letting the new coating material push the old material out of the system, or
you may have to flush the system with solvent before introducing the new material.
If the new coating material is not compatible with the old material, flush the system two
times with solvent:
• First solvent flush: Use a solvent that is compatible with the old material.
• Second solvent flush: Use a solvent that is compatible with the new material.
Refer to the
System Startup
procedures on page 17.
1. Turn the back pressure regulator knob fully counterclockwise to de-pressurize the
system.
2. Turn off the EP2 pump.
3. If used, shut off the pressure feed.
4. Trigger the applicators.
5. Supply the system with solvent or new coating material.
6.
Turn the ball valves to the priming position and start the pump. When air stops flowing
from the drain valve, turn the ball valves to the flushing position and flush the old
material and air out of the system.
7. Trigger the applicators to purge them of old material and air.
8.
Set the fluid pressure and temperature as necessary.