This procedure should be executed in the following cases :

  • If you replace the stepper motor.
  • If you replace the main board.
  • If the steam wand assembly is not moving smoothly, makes abnormal noise or if the calibration procedure is not correctly executed.

Planning

  • Prepare the area where to adjust the main board.
  • Execute the following procedure first : Removing the housing of Perfect Moose Greg V2 
  • Prepare a multimeter with two clamps attached to the measuring probes, set for measuring DC voltage. Attach a small conductive screwdriver to the red clamp (positive polarity).


 

 

Procedure


  • Locate the potentiometer (RV201) mounted on the main PC board. 


  • Locate the stepper motor


  • Check and note the currant of the motor. This is very important and you will need it later on in this procedure. There are 2 models. One with 1,2A and one with 2,5A.

  • Remove the SD card and attach the black clamp (negative polarity) to the metal housing of the SD card slot.


  • Turn the Perfect Moose on. Since the SD card is not present the screen will just show the welcome screen and nothing else will happen but you can ignore this.
  • Place the small conductive screwdriver, attached to the red clamp (positive polarity) in the middle of the potentiometer. Make sure the conductive screwdriver does not touch any other parts.
  • For motor 1,2A : Gently turn the potentiometer with the conductive screwdriver until the reading on the multimeter indicates 0,6 Vdc (+/- 0,03 Vdc). 
  • For motor 2,5A : Gently turn the potentiometer with the conductive screwdriver until the reading on the multimeter indicates 1,2 Vdc (+/- 0,06 Vdc). 

FINAL CHECK

 

  • Turn the device off, remove the black clamp and screwdriver.
  • Place the SD card back.
  • Turn the device on again. 
  • Observe if the steam wand assembly is moving smoothly without any abnormal noise and if the calibration procedure is correctly executed. If not, check the voltage again and adjust.