Objet30 User Guide 6 Operating and Maintaining the Printer
DOC-34025 Rev. I 6-60
22. Choose Replace faulty head(s) if you are prepared to replace the print
heads now.
or—
Choose Abort wizard if you want to replace the print heads at another time.
Replace print heads only after consulting with a Stratasys-authorized
customer-support engineer.
To replace print heads, you need these tools and materials:
❒ replacement print head(s)
❒ 90% isopropanol (IPA—isopropyl alcohol) or ethanol (ethyl alcohol)
❒ disposable cleaning gloves (supplied with the print head; or use any
clean, powder-free protective gloves)
❒ a supplied cleaning cloth or equivalent
❒ the scale supplied for use in the Head Optimization wizard (Weight
Test)
❒ the Missing Nozzles ruler
If you are replacing print heads now, the wizard guides you through the
procedure when you click Next. Continue with "Preparing the Print Block" on
page 6-62.
Replacing Print Heads
The condition of the print heads directly affects the quality of printed models.
You may need to replace a print head if one or more of the following symptoms
occurs:
• The Head Optimization wizard determines that a print head is defective.
(See "Optimizing (Calibrating) Print Heads" on page 6-51.)
• There are noticeable grooves in the surface of printed models.
• Visual inspection of the head reveals that its surface is damaged—peeling
or bubbles in the nozzle area.
• The printer interface displays a warning or malfunction message relating to
a print head—
❒ Head Heater temperature timeout
❒ Head Heater thermistor open
❒ Head Heater thermistor short
Replace print heads only after consulting with an authorized customer-
support engineer.
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