HP Designjet 3D Printer series - Manual (Page 44)

40
M
aintenance
Remove debris from the Filament Present switch
There may be a time when the Filament Present switch needs to be cleared in addition to the
500 hour maintenance. For example, if a Material Error-Filament blocked message appears
on the display panel; the recommendation may be to clear debris from the Filament present
switch.
1. Unload material from the printer .
2. Open the material bay doors by gently pressing in to release and pulling outwards.
3. Remove the material carriers by first pushing them in to unlatch and then pulling them
outwards.
4. Disconnect the material tubes from the rear of the material bay(s). Leave them attached to
the Y block.
5. Locate the entrance hole to the Filament Present Switch in the material bay(s). See Figure
36.
Figure 36 Filament Present Switch location
6. Obtain a can of compressed air.
7. Insert the canned air extension tube to its spray nozzle.
8. Align the canned air extension tube with the entrance hole of the Filament Present Switch.
See Figure 37.
Figure 37 Cleaning the Filament Present Switch
9. Squeeze the spray nozzle for one quick burst (approximately 2 seconds) to clear each
Filament Present Switch on the model and support sides of the material bay. If an optional
material bay is installed, repeat this procedure for the second bay.
10. Reconnect the material tubes to the rear of the material bay(s).
11. Replace the material carriers and load material.
Support side Filament Present Switch Model side Filament Present Switch