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Printer service procedures

Table of Contents
1) Introduction
2) Printer un-boxing and installation
3) Getting to know your TRILAB DeltiQ 2 printer
4) Making your first DeltiQ 2 print
5) Cheat sheet – standard printing procedure
6) How to use the DeltaControl display and application
7) How to use the WebControl online interface
8) Installing the printer on your own
9) Printer service procedures

Swapping the Titan and Nimble extruders

To interchange the extruders use the following instructions. The procedure for disconnecting the Titan extruder and connecting the Nimble extruder is shown, but if the sequence of steps is changed, the reverse sequence can be applied.

Note: Always swap the extruders with the filament removed.

First, remove the blue safety ring from the bowden cable on the print head.

You can use the supplied pliers and remove the ring from the special recess in the top profile of the print head.

Then, press down on the black bowden cable lock with the pliers.

This will release the bowden cable on the print head side.

Now repeat the procedure for the Titan extruder. Remember to remove the safety blue ring first.

Then press the black line lock the same way and remove the Bowden cable from the extruder.

The wiring is also attached to the harness at several locations by means of printed clips. Carefully remove the Bowden cable from the clips.

Tip: To prevent your bowden cable from getting lost, place it in one of the vertical profiles.

Remove the short Teflon tube from the Nimble extruder holder.

Place it in the newly accessible hole in the print head. It’s fine if part of the tube protrudes from the print head.

Note: The tube is not trimmed equally at both ends. The correct orientation is such that the tube rises through the head with the pointed end first (picture the point of a crayon) and ends at the top with a cone-like cut.

After placing the tube through the head, try to pull it out slightly. You will not be able to remove it, but the Bowden Lock will create a space to re-apply the blue safety ring.

Using the supplied Allen key, remove the front screw from the print head (shown in the following photo with the printer facing the user).

Second, remove the left rear bolt.

Place the loosened screws in the bracket on the Nimble extruder. This will prevent you from losing them.

Remove the moving part of the Nimble extruder from the bracket in the rear vertical profile of the printer. It should come off with a slight click.

Put the head part of the extruder into your hand. Next, you will temporarily remove the red piece which is snug against the filament wheel.

Press the two tabs together on the red part of the extruder head and swing it towards you. Then remove the entire red piece.

Position the extruder head so that the extruder’s head screws are located above the holes after the screws have been removed.

Screw the Nimble extruder head to the print head using the wrench provided.

Verify that the assembly is properly fitted by aligning the Teflon tube orifice with the rest of the Nimble extruder head. The figure also clearly shows a cross cut section of the tube confirming the correct orientation that we went over in the previous steps.

Now re-install the pressure roller (the red piece we removed). Hold the tabs between your fingers and verify that the two perpendicular tabs on the opposite side of the red section are pointing downwards, not upwards.

Place the red part that corresponds to the matching part of the extruder body head as shown in the following figure. Now the extruder is ready to apply filament.

Next, we’ll prepare the filament to be applied through the Nimble extruder. It will have a similar procedure to that of the Titanium extruder. Remove the string from the secured position in the spool eye and trim it with the supplied pliers at a 45 ° angle.

Feed the line through the hole of the Nimble extruder motor unit labeled FILAMENT as shown in the following figures. The motor does not have any components in the filament’s path and should go smoothly when feeding the filament.

Push the filament through the entire bowden cable so that it sticks out at the other end.

Feed the free end of the filament into the head of the Nimble extruder as shown below.

Press the red tabs of the head’s red hinged piece together and place the entire piece in an upright position. This fixes the pressure wheel in place. It is good to insert a finger between the tabs to verify the correct positioning (snapping-in) of the hinged part.

After completing all of these steps, the printer is ready to print using the Nimble extruder.

Attention: After starting the printer, the first thing you should do is to run DeltaControl’s user-defined Nimble Load macro.

Replacing the Print Head

The print head can be replaced very simply. It is thus possible to have different configurations of the print head (with a different nozzle or modified heating element).

Attention: Always replace the print head with the printer turned off and the filament removed.

First, remove the printhead connector (labeled Printhead) from the hub. It is necessary to press the tab on the side of the connector.

Depending on which extruder you have connected to the printhead, use the relevant section (Swapping Titanium and Nimble extruders) to remove the Bowden cable or Nimble extruder head from the printhead.

In any order, loosen all of the screws on the print head.

While unscrewing the last, hold the print head down to prevent it from falling.

Then remove the print head. The machine is ready to have another print head installed. Use this part of the manual, in reverse order, to re-install it.

Caution: Please pay attention to the position of the wiring harness when replacing the print head. The wiring harness must extend between the two rear arms and never sideways.

Cleaning the nozzle (cold pull)

Note: This procedure requires you to perform some steps in rapid succession. Please read this manual in advance and make sure you understand those steps.

If the filament flows only slightly through the nozzle, it is probably clogged. It can be cleaned by a cold pull. This method uses the partial solidification of the filament in the nozzle to its advantage and removes any stuck impurities.

Prepare your pliers and approx. 50 cm of light colored PLA strings (it will be easier to control dirt pulled out of the nozzle).

If filament is loaded in the print head, remove it now.

Use the pliers to loosen the filament bowden cable attachment to the print head (if using a Titan extruder) or unscrew the Nimble extruder head and remove the short Teflon tube from the print head (using a Nimble extruder). In any case, the fact that there is nothing blocking the printhead from above is our starting point for further actions.

Heat the nozzle to 210 ° C using the online control interface or the DeltaControl display.

Cut about 50 cm of filament at a 45 °at the end with the pliers and straighten the last 10 cm.

When the nozzle temperature reaches 210 ° C, insert the trimmed piece of filament into the print head. Molten filament should start to flow out of the nozzle.

Tip: If the filament does not come out of the nozzle at all, the nozzle is probably clogged completely and the cold pull method is unlikely to work. In this case we recommend replacing the nozzle with a new one.

Caution: For the next steps, hold the print head with your other hand when loading the filament. This is to prevent the print head from moving and causing possible damage to the printer electronics by randomly moving the print head.

Using the DeltaControl display or web interface, reduce the nozzle temperature to 90 ° C. Press the filament with a moderate but constant pressure into the print head until the nozzle temperature drops below 160 ° C.

When the temperature drops to 90 ° C, the filament in the nozzle is relatively stiff but still slightly elastic.

Caution: At this point, do not leave the filament in the nozzle longer than necessary and proceed to the next step immediately.

Hold the free end of the filament by one hand, the print head with the other hand and rip out the filament with a quick upward movement.

Check the part of the filament that you removed from the nozzle. If the procedure was done correctly, pieces of dirt from the nozzle shojld be visible at the end of the extracted filament. There is also an impression of the internal shape of the nozzle.

From above (and illuminated from below) it is possible to check that the nozzle is clear of any debris – if the procedure is successful, you can see through the nozzle. For optimum efficiency, we recommend repeating the entire nozzle cleaning procedure again.

After the nozzle is clear, slide the Bowden cable back into the print head (or put the Nimble extruder head) back into place and secure it with the blue lock.