MIXER

Maintenance Videos

Zeno Academy

Better Together
Zenit Group | 28 Mar 2022

ZMR - Mixer Assembly

  1. Fit the sensor rubber gasket in place and pre-fix the cable gland
  2. Fit the double sensor into the cable gland
  3. Warning: the first sensor must stick out by about 10 mm
  4. Tighten the cable gland
  5. Temporarily tape the sensor cable to the outside of the case
  6. Place the case on the base of the press 
  7. Add 2 suitable supports to avoid crushing the sensor
  8. Position the stator on the case so that one of the grooves is aligned with the sensor cable
  9. Place the drivers on the stator
  10. Using a press, insert the stator in the case
  11. Remove the drivers
  12. Fit the supporting washer and the bearing
  13. Overturn the case and place it on the support using a hoist
  14. Fit the shaft into the motor
  15. Place the top bearing and its driver on the shaft
  16. Using a press, fit the bearings into the shaft 
  17. Remove the driver
  18. Fit the O-ring into its seat
  19. Secure the bearing with the snap ring
  20. Grease the bushing O-ring
  21. Fit the bushing and place it in its seat with the driver
  22. Secure the bushing with the snap ring, making sure it is perfectly snug
  23. Wet the counterface with alcohol and fit it, using the driver
  24. Clean the counterface with a paper towel and lubricate the surface slightly
  25. Clean the mechanical seal with a paper towel and wet it with alcohol
  26. Place the mechanical seal in the shaft and fit it with the driver
  27. Fix the mechanical seal with the snap ring
  28. Fit the key into the seat in the drive shaft
  29. Place the sun gear in the planetary gear set and check that it turns freely
  30. Engage the sun gear
  31. Pour a few drops of lubricating oil onto the paper gasket and fit it into the seat. Use a little grease to hold it in place.
  32. Place the reduction gearbox case on the motor and secure it with the screws
  33. Cut the sensor sheath to reveal about 5 mm of the conductor inside
  34. Insert the rotation stop pins in their seats
  35. Fit the crown gear
  36. Fit the planetary gear set
  37. Using a press, fit the bearings into the reduction gearbox shaft. Use a driver to avoid damaging the teeth
  38. Secure the bearing with the snap ring
  39. Place the snap ring in seat in the front bearing support, making sure it is perfectly snug
  40. Fit the shaft and bearings into place in the support
  41. Grease the bushing O-ring and fit it in the front bearing support using the driver
  42. Secure the bushing with the snap ring, making sure it is perfectly snug
  43. Using a hoist, fit the shaft into the reduction gearbox
  44. Fit the O-rings
  45. Fix the sensor in place with the cable gland
  46. Wet the first counterface with alcohol and fit it into the seat in the bushing with the driver
  47. Clean the counterface with a paper towel and lubricate the surface slightly
  48. Clean the first mechanical seal with a paper towel and wet it with alcohol
  49. Insert the first mechanical seal and fit it with the driver
  50. Fix the seal with the snap ring
  51. Fit the washer
  52. Clean the second mechanical seal with a paper towel and wet it with alcohol
  53. Place the second mechanical seal in the shaft and fit it with the driver
  54. Clean any residues from the surfaces
  55. Wet the second counterface with alcohol and fit it into the seat in the front cover with the driver
  56. Clean the counterface with a paper towel and lubricate the surface slightly
  57. Fit the front cover on the motor and fix it with the screws, tightening them by hand first, working by opposites
  58. Fit the plug in the reduction gearbox case
  59. Use Loctite 243 threadlocker or equivalents
  60. Use a union to connect the compressed air system to the motor case and test for tightness at a maximum pressure of 1 bar
  61. Remove the union
  62. Use a union to connect the compressed air system to the front cover and test for tightness at a maximum pressure of 1 bar
  63. Remove the union
  64. Lie the motor on the bench
  65. Fill the front cover chamber with oil.  Refer to the documentation for the correct amount.
  66. Fit the plug in the front cover (Use Loctite 270 threadlocker or equivalents)
  67. Fill the reduction gearbox chamber with oil through the hole in the motor case
  68. Refer to the documentation for the correct amount.
  69. Fit the plug in the motor case
  70. Use Loctite 243 threadlocker or equivalents
  71. Stand the motor on the bench
  72. Protect the cables of thermal protections and the sensor with a sheath
  73. Grease the O-ring into the seat in the rear bearing support
  74. Fit the rear bearing support. Fit the cables through the hole
  75. Fit the O-ring into the seat in the rear cover
  76. Fit the cable into the cable gland and the rear cover
  77. Fit the cable stop and fix it in place
  78. Fit a lug to the ground cable and screw it to the bearing support
  79. Connect the motor terminals to the electrical cable and tighten the lugs
  80. Check the type of connection in the documentation
  81. Taking care not to crush the cables, fit the rear cover on the case and screw it in place
  82. Fix the cable gland
  83. Using a union, connect the compressed air system to the rear cover
  84. Test for tightness at a maximum pressure of 1 bar
  85. Remove the union
  86. Fit the plug in the rear cover (Use Loctite 270 threadlocker or equivalents)
  87. Lie the motor on the bench
  88. Fix the bracket to the rear cover (Use Loctite 270 threadlocker or equivalents)
  89. Position the plastic guard and fix it to the runner (Use Loctite 270 threadlocker or equivalents)
  90. Fix the runner to the bracket (Use Loctite 270 threadlocker or equivalents)
  91. Sling the motor in a horizontal position
  92. Fix the lifting handle to the collars (Use Loctite 270 threadlocker or equivalents)
  93. Fit the plastic guards and fix them to the supporting bracket (Use Loctite 270 threadlocker or equivalents)
  94. Fix the supporting bracket to the collars (Use Loctite 270 threadlocker or equivalents)
  95. Position the sliding cylinders in the runner and fix with the split pins
  96. Mount the propeller on the shaft and fix it with the screw (Use Loctite 270 threadlocker or equivalents)
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