Troubleshooting
If you encounter a problem that you cannot readily solve, call EFD.
Problem Possible Cause and Corrective Action
No power Be sure that there is AC power at the wall receptacle and that the
blue LED on the power pack is on. Verify that the DC plug is securely
connected to the Ultimus DC power input port.
Inconsistent dots
• Check dispensing tip, syringe barrel, and material for possible clogging.
• Check the dispenser air pressure display to be sure air pressure is not
varying. If needed, use the lter regulator. For dispenser accressories,
refer to “Accessories” on page 29.
• Air bubbles in the material can cause inconsistency. For best results,
remove all air bubbles.
Timer seems inoperative Check to be sure you are not in STEADY mode. The upper left corner of
the display should read TIMED or MEMORY.
Material suck-back Try the following:
• Use a SmoothFlow piston or LV Barrier to prevent material being drawn
into the dispenser.
• Attach an empty barrel, put the unit in STEADY mode, place the barrel
in a cup, and then press the foot pedal to expel the uid.
• Order the vacuum suck-back lter trap accessory, which is guaranteed
to prevent uid from leaking into the dispenser. For dispenser
accressories, refer to “Accessories” on page 29.
If the problem cannot be corrected, contact an EFD Fluid Application
Specialist for assistance.
Display backlight intensity is low The Ultimus workstation is in sleep / power save mode. Press any button
or press the foot pedal to reactivate.
Voltage initiate does not function Verify that the applied signal to pins 1 and 2 of the Ultimus I/O connector
is between 5 and 24 VDC.
Air leaking from exhaust port Air from the exhaust is normal when vacuum is used. If vacuum is
completely off and you still exhaust hear air, make sure plant air supply to
your unit is set to within 5.5–7.0 bar (80–100 psi).
Ultimus I–II High Precision Fluid Dispensers
30 www.nordsonefd.com info@nordsonefd.com 800-556-3484 Sales and service of Nordson EFD dispensing systems are available worldwide.
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