GREY

Maintenance Videos

Zeno Academy

Better Together
Zenit Group | 22 Apr 2021

GREY - DGG 200 Assembly

  1. Use a marker to indicate the position of the wires on the side of the stator
  2. Insert the blocks into the stator, taking care not to crush the wires
  3. Secure the blocks with the threaded bar
  4. Using a hoist, lift the stator and rest it on the housing
  5. CAUTION: keep the mark on the stator on the side indicated
  6. Using a press and a suitable block, insert the stator into the housing
  7. Remove the blocks from the stator
  8. Place the bearing in the seat of the oil chamber and protect it with a suitable block
  9. Overturn the oil chamber on a suitable support
  10. Using a hoist, place the shaft in the seat of the bearing
  11. Using a press, insert the shaft into the seat of the bearing
  12. Place the upper bearing on the top of the shaft
  13. Using a press and a suitable block, insert the upper bearing into the seat of the shaft
  14. Using a hoist and a strap, rest the shaft on a surface
  15. Lock the bearing onto the shaft with the circlip
  16. Insert the probe into the cable gland and the relative grommet
  17. Place the probe in the seat of the oil chamber and secure it by tightening the cable gland
  18. WARNING: The probe must protrude from the heat shrink sheath by about 1 - 3 mm
  19. Using a hoist, overturn the housing, taking care not to crush the wires
  20. Cut the wire of the probe to a length approximately 1.5 times the height of the housing
  21. Insert the wire of the probe into one of the grooves on the stator
  22. Secure the cable lug to the probe wire
  23. Using a hoist, lift the shaft
  24. Place the O-ring in the seat
  25. Clean the surface with compressed air
  26. Insert the shaft into the stator, leaving about 10 cm between the oil chamber and housing
  27. Secure the wire to the probe using the nut
  28. Use Loctite 243 thread lock or equivalent.
  29. Slowly lower the shaft until the oil chamber and housing couple together
  30. Gently pull the probe wire during the operation
  31. Lock the oil chamber using the fixing screws
  32. Insert the O-ring in the seat of the bush and apply grease
  33. Insert the bush into the shaft
  34. Secure the bush using a suitable block
  35. Secure the bush with the circlip
  36. Moisten the first counterface of the mechanical seal with alcohol and insert it into the seat
  37. Secure the first counterface using a suitable block
  38. Clean any residue from the shaft using a paper towel
  39. Lightly lubricate the first counterface
  40. Clean the surface of the first mechanical seal with a paper towel and moisten it with alcohol
  41. Insert the first mechanical seal into the shaft and position it with the block
  42. Lock the first mechanical seal with the circlip
  43. Clean any residue from the shaft using a paper towel
  44. Insert the locking ring into the seat.
  45. Moisten the second mechanical seal with alcohol and position it with the block
  46. Clean any residue from the shaft using a paper towel
  47. Moisten the second counterface with alcohol and insert it into the pump plate seat with the block
  48. Position the locking ring and lead in the screws WITHOUT TIGHTENING THEM
  49. Use Loctite 243 thread lock or equivalent.
  50. Insert the O-ring in the seat and apply grease
  51. Place the oil lifter in the seat and secure it by tightening the screws
  52. Lightly close the fins of the oil lifter towards the inside
  53. Place the O-ring in the seat of the pump plate
  54. Place the O-rings in the seats of the oil chamber
  55. Clean any residue from the shaft using a paper towel
  56. Lightly lubricate the mechanical seal
  57. Clean the surface of the counterface with a paper towel.
  58. Overturn the pump plate and place it on the oil chamber
  59. Lock the pump plate by tightening the scews in cross order
  60. Pour a little alcohol to make sure there are no leaks from the lower seal.
  61. Connect the compressed air system to the oil chamber using a connector.
  62. Perform the leak test at a maximum pressure of 1 bar.
  63. The absence of air bubbles guarantees the perfect installation of the mechanical seal
  64. Remove the connector.
  65. Lay the motor on the bench and fill the chamber with oil
  66. Check the correct quantity in the documentation
  67. Close the oil chamber with the cap
  68. Use Loctite 243 thread lock or equivalent.
  69. Place the motor vertically on the bench.
  70. Clean the surface with compressed air
  71. Protect the heat protection and probe cables with a sheath.
  72. Insert the O-ring into the upper bearing support seat and apply grease
  73. Place the upper bearing support on the motor housing
  74. Use the hole in the holder for routing the cables
  75. Position the bar and secure it with the screws
  76. Use Loctite 243 thread lock or equivalent.
  77. Fasten the terminal block modules to the bar
  78. Connect the motor terminals to the terminal block
  79. Insert the cable gland grommet into the motor cover seat.
  80. Place the cable gland on the motor cover and lead in the screws without tightening them
  81. Attach the handle to the motor cover.
  82. Insert the O-ring into the motor cover seat
  83. Insert the cable into the cable gland.
  84. Insert the cable clamp and lock it in place.
  85. Tighten a cable lug to the earth wire and secure it to the corresponding arrangement
  86. Connect the motor terminals to the terminal block according to the diagram shown in the documentation
  87. Place the motor cover on the housing taking and secure it with the screws
  88. TAKE CARE not to crush the wires
  89. Tighten the locking screws of the cable gland
  90. Connect the compressed air system to the motor cover using a connector.
  91. Perform the leak test at a maximum pressure of 1 bar.
  92. Disconnect the compressed air hose and remove the connector.
  93. Close the motor cover with the cap
  94. Use Loctite 243 thread lock or equivalent.
  95. Lay the motor on the bench and insert the O-ring in the seat
  96. Place the impeller on the shaft
  97. Secure the impeller with the locking screw
  98. Use Loctite 270 thread lock or equivalent.
  99. Using a hoist, lift the motor
  100. Place a wooden panel under the impeller to prevent damage to the edges
  101. Apply grease to the pump plate O-ring
  102. Position the motor on the pump body and lock it with the fixing screws
Share this page on:Add to Twitter  Add to LinkedIn  Add to Facebook

Stay connected with Zenit

Zenit News

zenit air diffuser new jet oxy grey
The range of J-Oxy aerators is renewed and expanded.
Find out more ›

References

Zenit Italy precess water lifting references verona
Textile industry dept. process wastewaters
Find out more ›

Case History

Grouppo Zenit case history HASI uniqa chopper open
Uniqa Chopper solves clogging problems in special waste facilities.
Find out more ›

Zeno Academy

zenit video cover grey
Grey Maintenance Video
Find out more ›