© 2024 Nordson Corporation
1044131-06
4-6
Operation and Maintenance
NOTE: The more the circulation valve is opened, the more potential there is for fan
pattern collapse or “wink” at the spray device when the pump shifts direction. Open the
the circulation loop.
4.
5.
Circulate coating material through the heater until it is at desired temperature before
spraying parts.
NOTE: Overheating coating materials can cause cavitation in the pump if the heat
allows the solvents in the coating material to boil out in the vacuum created during
the siphon cycle. If this happens, lower the heater thermostat setting. Refer to
Troubleshooting for more information.
6. Circulating systems: Adjust the circulation valve until the pump is supplying the
required volume of coating material to the spray devices and circulating material back
may require faster rates.
Routine Shutdown
See Figure 4-2.
1.
through the system for 10 to 15 minutes before shutting down the pump. This will cool
down the coating material and heaters and prevent the coating material from curing
inside them.
2.
regulator (3) to zero.
3. Relieve the system hydraulic pressure by triggering the spray devices or opening the
drain valve (11).
NOTE:
Circulate material through the system for several minutes before beginning production
the next day. Do not leave the system open to air as the coating material could cure and
4. Perform daily maintenance as described in Operation and Maintenance in this section.
To Next Page
Loading...
