Test Microswitches (M2+)
| Model | [•] AON M2+ (CE) | [•] AON M2+ (R-NZ) | [•] AON M2+ | [ ] AON-M2 2020 | [ ] AON-M2 |
| Category | [•] Preventive | [ ] Corrective | |||
| Frequency | [ ] Daily | [ ] Weekly | [•] Monthly | [ ] Yearly | [ ] As Needed |
For instructions on how to test XYZ-axes and probe microswitches found on the AON-M2 and the AON-M2 2020, refer to the Test Microswitches procedure.
Summary
This procedure is part of the monthly preventive maintenance routine.
The procedure that follows gives instructions on how to:
- Test the two X-axis microswitches
- Test the two Y-axis microswitches
- Test the two Z-axis microswitches.
Estimated time: 30 minutes
Microswitches in good condition prevent:
- Unwanted interference between the XYZ-axes when movements occur.
- Incorrect XYZ-axes reference points.
- Unsatisfactory print layer quality.
Tools
None required.
Parts Information
None required.
Personal Protective Equipment
| Qty | Description | Minimum Specification |
|---|---|---|
| 1 | Safety Glasses | N/A |
| A/R | Nitrile Gloves | ISO 2859-1 or ASTM D6319 |
Prepare the Machine
Make sure that there are no prints on the build surface. Remove print(s) before the procedure that follows is started. Failure to do so can cause a collision and cause damage to the machine component(s).
- Home XYZ.
- Lower the Z-axis by 300 mm.
- Wait until the build chamber, build platform and hot ends are at room temperature.
Disable the Stepper Motors
- Disable all the machine steppers motors:
- For the Klipper-based firmware:
- On the Graphical User Interface (GUI), go to the Control > Motion. tab.
- Select the
MOTORS OFFbutton.
- For Marlin-based firmware, select the
M18button.- On the Graphical User Interface (GUI), go to the Terminal tab.
- Enter the
M18command.
- For the Klipper-based firmware:
The MOTORS OFF and M18 commands will disable all the machine stepper motors. Do not home the axes as the motors will re-engage automatically. Failure to do so can cause injuries and/or cause damage to machine components.
Test Microswitches
Wait until all machine components are at room temperature before you continue. Some machine components can be hot if the machine was recently used. Failure to do so can cause injuries.
- Open the build chamber door.
- Manually move the selected toolhead to the center of the X-axis linear rail.
- On the GUI, input
M119, and select enter. TheM119command will show the present condition of all microswitches. - Record the condition of the six microswitches.
- To test the left Z-axis microswitch (5), do as follows:
- Use your finger to lightly compress left Z-axis microswitch (5) actuator, and the same time, input
M119on the GUI/web browser. - Make sure that the microswitch condition changes to TRIGGERED.
- Release the left Z-axis microswitch (5) actuator (5), and make sure that the microswitch condition changes to open.
- Do steps 5a to 5c three times to make sure that the left Z-axis microswitch (5) operates correctly.
- If the microswitch condition does not change, replace the microswitch.
- Use your finger to lightly compress left Z-axis microswitch (5) actuator, and the same time, input
- Do step 5 for the microswitches that follow:
- The two X-axis microswitches found on T0 (1) and T1 (2).
- The two Y-axis microswitches (3)(4).
- The right Z-axis microswitch (6).
Replace Defective Microswitches
- To replace the X-axis microswitches, refer to Replace X-Axis Microswitches.
- To replace the Y-axis microswitches, refer to Replace Y-Axis Microswitches.
- To replace the Z-axis microswitches, refer to Replace Z-Axis Microswitches (M2+).
Test and Return to Service
- Close the build chamber door.
- Home XYZ.