The extruder is equipped with two fans – upper and lower. The main role of the upper extruder fan is to cool down the extruder, whereas the lower extruder fan cools down each layer of the print. Therefore, if your model warps, melts or you can notice burn marks on its surface, you should check the extruder fans for proper operation. The following manual presents how to replace both extruder fans.

M Series Printers Servicing

M Series Printers Servicing

Zortrax M Series includes two printer models right now: M200 and M300. These printers remain similar in terms of design and technology. The most important difference is their size: M200 with a 200x200x180mm workspace, whereas M300 with 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. In the case of M300, these procedures look the same.

Unloading the Material

From the menu choose “Material” and then “Unload the material” option. The extruder should start to heat up automatically. Once the extruder is hot, the motor will start to unload the material.

Unplugging the Power Cable

Turn off the printer and unplug the power cable. Wait about 15 minutes and let the machine cool down.

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.

Upper Printed Extruder Cover Removal

Detach the upper printed extruder cover from the extruder.

Hotend Removal

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

Heater and Thermocoupler Removal (from the Hotend)

With a 1.5mm Allen key loosen the two screws securing the heater and thermocoupler in the hotend. Then take the heater and thermocoupler out.

Heater and Thermocoupler Removal (from the Extruder)

Remove the heater and thermocoupler from the extruder block and the heat shrink tubing.

Upper Extruder Fan Replacement

The following steps present the upper extruder fan replacement (Fan 1). It is placed on the heat sink next to the extruder alumium block. The fan grid is placed on the upper extruder fan.

Unplugging the Upper Extruder Fan Cable

Unplug the red connector from the extruder PCB. Remove the cable from the heat shrink tubing.

Unscrewing the Upper Extruder Fan

Unscrew the four screws securing the upper extruder fan and remove them.

Upper Extruder Fan Removal

Remove the upper extruder fan grid and then remove the fan.

Upper Extruder Fan Assembly part 1

Place the upper extruder fan on the heat sink next to the extruder alumium block. Next, place the grid on the fan.

Screwing the Upper Extruder Fan

Screw the upper extruder fan with the four screws.

Upper Extruder Fan Assembly part 2

Put the upper extruder fan cable through the heat shrink tubing and plug it in.

Carefully put the cable in the gap in the extruder aluminium block. Be careful not to damage the cable.

Lower Extruder Fan Replacement

The following steps present the lower extruder fan replacement (Fan 2). It is placed under the heat sink next to the extruder alumium block. The fan shroud is secured to the lower extruder fan.

Unplugging the Lower Extruder Fan Cable

Unplug the blue connector from the extruder PCB. Remove the cable from the heat shrink tubing.

Unscrewing the Lower Extruder Fan

Unscrew the three screws securing the lower extruder fan.

Lower Extruder Fan Removal

Separate the lower extruder fan from the heat sink and remove the distance piece.

Unscrewing the Lower Extruder Fan Shroud

Unscrew one screw securing the lower extruder fan shroud and separate it from the fan.

Screwing the Lower Extruder Fan Shroud

Put the shroud together with the new lower extruder fan and secure it with one screw.

Lower Extruder Fan Assembly part 1

Place the distance piece on the lower extruder fan. Install the fan under the heat sink.

Screwing the Lower Extruder Fan

Secure the lower extruder fan with the three screws.

Lower Extruder Fan Assembly part 2

Put the lower extruder fan cable through the heat shrink tubing and plug it in.

CAREFULLY PUT THE CABLE IN THE GAP IN THE EXTRUDER ALUMINIUM BLOCK. BE CAREFUL NOT TO DAMAGE THE CABLE.

Heater and Thermocoupler Assembly (in the Extruder)

Put the heater and thermocoupler cables through the heat shrink tubing.

CAREFULLY PUT THE CABLEs IN THE GAP IN THE EXTRUDER ALUMINIUM BLOCK. BE CAREFUL NOT TO DAMAGE THE CABLE.

Heater and the Thermocoupler Assembly (in the Hotend)

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

Make sure that the screws don’t go through the insulation covering 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.

Hotend Assembly

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

Upper Printed Extruder Cover Assembly

Attach the upper extruder cover.

Plugging the Extruder Cable

Connect the extruder cable.

Plugging the Power Cable

Plug the power cable in.

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