System Startup and Operation
NOTE:
The illustration callouts on the next page correspond to the steps in this procedure.
1. On the PRESSURE screen, verify the SET pressure value. Use low pressure (approximately 5 psi) for low-
viscosity materials and higher pressure (approximately 15 psi) for high-viscosity materials.
2. Press and hold the ENABLE/DISABLE key for 4 seconds.
ENABLE/DISABLE key
3. On the DRIVERS screen for the dispense valve being tested, set the mode to STDY.
4. Press and hold the DISPENSE key. Allow material to flow until all air is purged from the system, then release the
DISPENSE key.
5. Adjust the fluid pressure, or the valve stroke knob, to set a flow rate that is neither too low nor too high. A
high flow rate will make setting up a small dot difficult or could cause splashing. Refer to the dispense valve
operating manual to adjust the valve for system startup.
Risk of solenoid valve damage. If you are using dispense valve 745NC with a 24 W solenoid, Nordson EFD strongly
recommends using the spike-and-hold functionality and not exceeding a DRV SPIKE TIME of 30 ms and a DRV
HOLD VOLTS of 5 V. Refer to “Entering Driver Spike-and-Hold Settings” earlier in this manual.
CAUTION
6. On the DRIVERS screen, enter the following settings for the dispense valve being tested:
• MODE: ON
• ON : 0.0500 seconds
• OFF: 0.0010 seconds
• DCNT: 1
7. Press the DISPENSE key again to initiate another dispense cycle. Increase or decrease the dispense (ON, OFF)
time or the fluid pressure to arrive at the desired deposit size. The primary control of the deposit size is the valve
open (ON) time.
8. The system is now ready to be initiated by the machine controls when the machine is started.
VM9000 Controller Key Legend
INCREASE (+) key
DECREASE (-) key
ENTER key
DISPENSE key
ARROW keys
,
ENABLE/DISABLE key
ValveMate 9000 Controller
51
www.nordsonefd.com [email protected]
800-556-3484 Sales and service of Nordson EFD dispensing systems are available worldwide.
