Heater and thermocouple replacement should take place if the extruder overheats or if the heating is insufficient. These problems are indicated by the firmware messages: “Extruder heating error,” “Extruder temperature is too high” or “Unexpected extruder temperature drop.” Also, if your print has blisters or hanging strands on its surface, you should consider the fact that the heater or the thermocouple may be broken. Sometimes when the nozzle hits the platform the heater and thermocouple also need replacing. But first you need to check the platform connectors and the nozzle for proper functioning. .

1

M Series Printers Servicing

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The Zortrax M Series includes two printer models right now: the M200 and the M300. These printers are similar in terms of design and technology. The most important difference is their size: the M200 has a 200x200x180mm workspace, whereas the M300 has an increased 300x300x300mm workspace.

Therefore, maintenance and repair work can be carried out in the same manner with both models. The following manual shows M200 repair work. For the M300, these procedures look the same.

2

Unloading the Material

If the material is loaded into the extruder, unload the material using the “Material” -> “Unload the material” option in the menu.

3

Unplugging the Power Cable

Turn off the printer and unplug the power cable.

Wait until the printer – especially the hotend – cools down completely.

4

Unplugging the Extruder Cable

Unplug the extruder cable.

THE MANUAL SHOWS THE EXTRUDER WITH THE TOP COVER V1. WE RECOMMEND REPLACING THE COVER V1 WITH THE COVER V2 FOR EXTRUDER CABLE PROTECTION REASONS. See the manual.
5

Hotend Removal

With a 1.5mm Allen key loosen the two screws that secure the hotend and remove the hotend from the extruder.

6

Heater and Thermocouple Removal (from the Hotend)

With a 1.5mm Allen key loosen the two screws that secure the heater and thermocouple in the hotend. Then remove the heater and thermocouple.

7

Extruder Upper Printed Cover Removal

Detach the extruder upper printed cover from the extruder.

8

Heater and Thermocouple Removal (from the Extruder)

Remove the heater and thermocouple from the extruder block and from the heat shrink tubing. Unplug the cables from the extruder PCB.

9

New Heater and Thermocouple Assembly (in the Extruder)

Plug the heater and thermocouple cables into the extruder PCB. Put them through the heat shrink tubing and inside the extruder’s block.

10

Extruder Upper Printed Cover Assembly

Attach the extruder upper printed cover.

11

Heater and the Thermocouple Assembly (in the Hotend)

Insert the heater and thermocouple into the hotend and firmly tighten the two screws that secure them (using a 1.5mm Allen key).

Make sure that the screws don’t go through the insulation that covers the wires (this can happen if the heater goes too deep into the slot).

This picture shows the heater inserted correctly. This picture shows the heater pushed too far into the slot in the hotend.
12

Hotend Assembly

Insert the hotend into the extruder and tighten the two screws that secure it (using a 1.5mm Allen key).

13

Plugging the Extruder Cable

Plug the extruder cable in.

14

Plugging the Power Cable

Plug the power cable in.

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