Maintenance work should be regular in order to keep the printer in good condition and achieve high quality prints every time. Some parts require maintenance before each print and some every few hundred working hours. All maintenance activities do not take much time and are not complicated. Before commencing any repair, it is important to turn off the printer and let it cool down. Remember to always wear gloves and glasses.

The following tables present maintenance and repair guidelines connected with each section of the Zortrax M300 Plus, together with specific check points, necessary activities and their frequency.

1

Main

ACTIVITY FREQUENCY SOLUTIONS TO THE PROBLEMS NECESSARY ACCESSORIES
Cleaning the machine, its interior and surroundings, especially the bottom plate under the platform Before each printing process To remove material remains from the interior of the device, use a vacuum cleaner or compressed air – a vacuum cleaner,
– cleaning products with a high evaporation rate
Cleaning the motherboard and the power supply unit from dust using compressed air Every 300 working hours Unscrew the bottom plate and use compressed air to remove dust – a 2.5 Allen key
– compressed air
2

Hotend

ACTIVITY FREQUENCY
Checking if the hotend and the nozzle are not clogged Before each printing process
Cleaning the nozzle After finishing one spool of material
Checking if the screws that secure the heater and thermocouple are tightened Every 300 working hours
3

Platform

ACTIVITY FREQUENCY SOLUTIONS TO THE PROBLEMS NECESSARY ACCESSORIES
Cleaning the perforated plate Before each printing process To remove material remains from the surface of the perforated plate, use a spatula – a spatula
Checking the perforated plate for deformation Before each printing process
Calibration Every 200 working hours If the platform calibration fails, move on to the next step indicated in this table
Cleaning the heatbed and the underside of the perforated plate Every 300 working hours Unscrew the screws that secure the perforated plate and remove the residues from the underside of the plate using a spatula. The heatbed needs to be cleaned with a piece of cloth damped in acetone – a spatula,
– a piece of cloth,
– acetone
4

X/Y Axes; Extruder Guide Rails

ACTIVITY FREQUENCY SOLUTIONS TO THE PROBLEMS NECESSARY ACCESSORIES
Checking if the axes and the extruder guide rails are clean from material remains and dust Before each printing process It is possible to feel slight resistance while checking if the extruder moves freely on the guide rails. In such case you should check if the X/Y axes and the extruder guide rails are covered with black grime. The axes and guide rails should be cleaned with a cloth damped in acetone and then lubricated with grease supplied in the Starter Kit – service grease
Checking the tension of the drive belts on the X/Y axes Every 300 working hours In order to check the tension of the drive belts on the X/Y axes, move the extruder to the central point and gently tug the belts. If the belts are loosened, tighten the screws placed on the top part of the X/Y axes blocks
Checking the tension of the drive belts between the motors and the X/Y axes Every 300 working hours
Checking if the screws on the X/Y axes and the motor pulleys are tightened Every 300 working hours
Checking if the extruder moves freely when the printer is off Every 300 working hours
Lubricating the X/Y axes and the extruder guide rails Every 200 working hours – teflon grease
5

Extruder

ACTIVITY FREQUENCY
Checking if the extruder top cover and the material guide are properly installed Before each start-up of the printer
Checking if the material guide is properly secured to the extruder cable with the material guide clamps Before each start-up of the printer
If you use the HEPA Cover, check if it does not press the extruder cable Before each start-up of the printer
Checking if the extruder cable is properly plugged into the extruder PCB Every 300 working hours
Checking if the extruder PCB is properly secured to the extruder block Every 300 working hours
Checking if the pins on the extruder cable connector are clean Every 300 working hours
Checking if the screws that secure the hotend are not loose, and, if necessary, tightening them Every 300 working hours
Removing the material remains and lumps from the extruder Every 300 working hours
Checking if the fans are working Every 300 working hours
6

Z-Axis

ACTIVITY FREQUENCY
Lubricating the Z-axis screw and rails Every 400 working hours

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