Microswitches Inspection

Model [X] AON-M2 [X] AON-M2 2020
Category [X] Preventive [ ] Corrective [ ] Troubleshooting

Summary

This procedure is part of the monthly preventive maintenance. This procedure gives detailed instructions on how to do make sure the microswitches are functional. For a simple visual inspection, or to tighten the microswitches, refer to the daily microswitches inspection.

This procedure gives the instructions on how to do an inspection and how to tighten the microswitches. Microswitches in good condition prevent:

  • Unwanted contact between the moving parts.
  • Unaccurate reference points.
  • Layers that are not equal.

Personal Protective Equipment

Qty Description Specification
1 Safety Glasses N/A

Prepare the Machine

  1. Home XYZ.
  2. Wait until the build chamber, build plate and hot ends are at room temperature.
  3. Close the door of the machine.

Microswitches Inspection

  1. Do the steps 1.a. to 1.f. to make sure that each microswitch is not triggered: Motion Menu
    1. With the operator interface, go to the Motion menu (1).
    2. Select T1 (Right Tool) (2).
    3. Set the Jog Distance (3) to 100 mm.
    4. Push the -Z arrow (4) two times.
    5. Push the +Y arrow (5) two times.
    6. Push the -X arrow (6) one time.
  2. On the operator interface, go to the terminal tab (7). Command Page
  3. Enter the M18 command. This will prevent the axes from moving.
  4. Enter the M119 command (8). This shows the state of each microswitch.

    The x max microswitch will appear as TRIGGERED at this stage. This is because there is always one of the two tools in the parked position. The T0 X-axis microswitch will be inspected later in the procedure.

  5. Record the condition of each microswitch.

    Make sure the M18 command is active. This prevents the parts in the machine to move. Do not home the axes as the motors will re-engage automatically. Failure to do so can cause injuries.

  6. Open the door of the machine.
  7. Do a test for the T1 X-axis microswitch (9): MS1
    1. With your hand, press the microswitch.
    2. At the same time on the user interface, enter the M119 command.
    3. Make sure that the microswitch condition changes.
    4. If the microswitch condition does not change, replace the microswitch.
  8. Do the step 7 again with these microswitches:
    1. T1 probe microswitch (10).
    2. Right-side Y-axis microswitch (11).
    3. Right-side build-table microswitch (12). MS4
    4. T0 probe microswitch (13).
    5. Left-side Y-axis microswitch (14).
    6. Left-side build-table microswitch (15). MS5 MS8
  9. On the operator interface, go to the terminal tab (7).
  10. Home the XY axes only.
  11. Do the steps 11.a. to 11.d. to make sure that the T1 X-axis microswitch is not triggered:
    1. With the operator interface, go to the Motion menu (1). Motion Menu 2
    2. Select T0 (Left Tool) (16).
    3. Set the jog distance to 100 mm (3).
    4. Push the -X (17) arrow one time.
    5. Push the +Y (18) arrow two times.
  12. On the operator interface, go to the terminal tab (7). Command Page
  13. Enter the M18 command. This will prevent the axes from moving.
  14. Enter the M119 command (8). This shows the state of each microswitch.
  15. Do step 7 again with the T0 X-axis microswitch (19). T0 X MS

Test and Return to Service

  1. Home XYZ.

Last modified: March 12, 2021