Gantry Print Heads
Page 36
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Print Heads
The F770 printer utilizes one print head assembly for model and support material. The model
and support heads are black. Once a head has been used for model or support, it can only be
used for that designated material (model or support) thereafter. The heads extrude model
material and support material with two identical liquefiers. A single blower fan, mounted above
the tip liquefier entrances, cools the incoming material at the liquefier entrances.
Head life is directly related to the amount of build time for the head. Heads are a replaceable
consumable item and should be changed once the head’s odometer reaches 1500 build hours
(see “Viewing Head Details” (page 64) for information on head odometers). You will receive a
warning when the head’s odometer reaches 1350 build hours, reminding you to order a
replacement head as the head is nearing its odometer limit. You can continue using a head
which has exceeded its odometer limit, but it is highly recommended that you change the head
as part quality will be unpredictable. The corresponding Head Status Icon will be displayed in
its warning state on the User Interface (seeTable 6 (page 62) for icon states). The entire model
or support head assembly is replaced as a single unit (see “Head Replacement” (page 121) for
instructions). The Head Release Lever locks and unlocks the associated head into or out of its
seated position.
Figure 12: Head Assemblies
Support Head
Assembly
Model Head
Assembly
Head Release Lever
(one per head assembly)
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