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ManualsBrandsNordson ASYMTEK ManualsEquipmentDispenseJet Series DJ-2200
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Operation 13
Changing Nozzles
The DispenseJet can be operated with the standard nozzle nut and nozzle only or with the co-axial nozzle
nut added to it (Figure 4-3).
NOTE If installed, the co-axial air solenoid valve does not need to be removed when not in use.
When changing nozzles, select “Using the Standard Nozzle Nut” or “Using the Air Assist Feature”
instructions as appropriate.
Using the Standard Nozzle Nut
This procedure assumes that the standard nozzle nut and nozzle are installed and that the co-axial air nozzle
nut is removed. Make sure to first drain the fluid system. See “Draining the Fluid Lines” in this section.
To use the Standard Nozzle Nut:
1. Verify that the nozzle functions properly by activating the solenoid valve either manually using
the solenoid valve push button or automatically from the dispensing system software.
NOTE Press the push-button on the bottom side of the solenoid valve to manually activate
the solenoid valve. A jet of air bursting out should be felt. Listen for the DispenseJet
needle to make contact with the micro-adjustment stop.
2. Connect the fluid syringe, or the fluid reservoir line, to the elbow connector on the lower body of
the DispenseJet.
3. Set the fluid pressure to 34.5 kPa (5 psi).
4. Turn the heater controller located inside the lower cabinet of the dispensing system to the ON (I)
position.
5. Verify that the heater controller is preset to 35° Celsius (95° F).
6. Allow 4 to 5 minutes for the temperature to reach its set point before starting the DispenseJet
operations.
7. To prime the DispenseJet with fluid before beginning operations, proceed as follows:
a. Using the dispensing system controls, manually move the Z-head so that the DispenseJet
nozzle is directly centered over the DispenseJet purge station lid.
b. Activate the solenoid valve by pressing the push-button underneath the solenoid valve until
fluid begins to flow out of the nozzle in an even stream.
c. Gently wipe the fluid from the end of the nozzle with a disposable towel.
8. Set the fluid pressure to the recommended setting for the type of fluid used. Typical setting is
between 7 to 69 kPa (1 to 10 psi).
9. You are now ready to perform the “Setup and Valve Offset Routines” described later in this
section.