Zenit Group | 31 Mar 2023

UNIQA - ZUG V WET

Complete assembly ZUG V model, WET version.

Step by step operations

Mark the position of the cables on the stator with a marker pen
Fit the drivers into the stator and secure them with the threaded rod
With the aid of a hoist, fit the stator into the case
IMPORTANT: keep the mark on the stator in this position
Using a press, insert the stator in the case
Remove the drivers from the stator
Find the stator groove nearest to the winding terminals
Insert the sensor cable into the groove in the stator
Fix the lug onto the sensor cable
Place the O-ring in the seat in the bottom bearing support
Fix the sensor cable gland to the bottom bearing support
Fit the sensor into the cable gland and tighten the nut to fix it in position
Lift the shaft using a hoist and a sling
Fit the shaft into the stator, leaving about 10 cm between the bottom bearing support and the case
Fix the cable to the sensor with the nut
Use Loctite 243 threadlocker or equivalents
Slowly lower the shaft until the bottom bearing support mates with the case.
Fit the O-rings and secure the bottom bearing support to the case with the screws
Fit the washer onto the shaft
Fix the washer with the snap ring
Fit the O-ring into the seat on the bushing and grease it
Fit the bushing in the shaft and push it into place with a suitable driver
Fix the bushing with the snap ring
Fit the O-ring into the seat in the bottom bearing support
Clean the surface of the first counterface with a paper towel and wet it with alcohol
Place the first counterface in the seat and fit it with the driver
Clean the surface of the counterface with a paper towel and lubricate it slightly
Clean the surface of the first mechanical seal with a paper towel and wet it with alcohol
Place the first mechanical seal on the shaft and fit it with the driver
Fix the first mechanical seal with the snap ring
Fit the shim rings into the seat
Clean the surface of the second mechanical seal with a paper towel and wet it with alcohol
Place the second mechanical seal on the shaft and fit it with the driver
Place the oil chamber on the motor and secure it with the screws
Fit the O-rings into the oil chamber seats
Fit the O-ring into the seat in the pump plate
Clean the surface of the second counterface with a paper towel and wet it with alcohol
Place the second counterface in the seat and fit it with the driver
Fit the ring into the seat and fix it with the snap ring
Fit the oil lifter into its seat
Clean the surface of the second counterface with a paper towel
Lubricate the surface of the second counterface with a few drops of oil
Remove any residues from the shaft and the mechanical seal with a paper towel
Fit the pump plate onto the oil chamber and fix it with the screws
Seal one of the oil chamber holes with the plug
Use a union to connect the oil chamber to the compressed air system
Test for tightness at a maximum pressure of 1 bar
With the aid of an eye-bolt, turn the shaft by hand and check that there are no leaks from the seal
Disconnect the compressed air hose and remove the union
Use a hoist and a sling to lie the motor on the bench
Fill the mechanical seal chamber with oil
Refer to the documentation for the correct amount
Fit the O-ring into the seat in the pump plate and grease
Fit the plug on the oil chamber
Use Loctite 243 threadlocker or equivalents
Use a hoist and a sling to stand the motor on the bench
Protect the cables of the thermal protections and the sensor with sheaths
Fit the O-ring into the seat in the top bearing support and grease
Fit the top bearing support on the motor case
Fit the cables through the hole in the support
Fit the O-ring into the seat in the top bearing support
Fit the terminal board bar into the seat and fix it with the screws
Use Loctite 243 threadlocker or equivalents
Fix the terminal board modules to the bar
Connect the terminals to the terminal board
Fit the cable into the cable gland and the rubber gasket
Fit the cable into the motor cover
Fit the cable stop and fix it in place
Fix a lug to the ground cable
Secure the ground cable with the screw
Connect the cable to the terminal board as shown in the diagram in the documentation
Fit the motor cover onto the case and fix it with the screws
Fit the rubber cable gland gasket into the seat in the motor cover and fix the cable gland with the screws
Using a union, connect the compressed air system to the motor cover
Test for tightness at a maximum pressure of 1 bar
Disconnect the compressed air hose and remove the union
Seal the motor cover with the plug
Use Loctite 243 threadlocker or equivalents
With the aid of a hoist, lie the motor on the bench
Couple the impeller to the shaft and secure it with the screw
Use Loctite 270 threadlocker or equivalents
With the aid of a hoist, lift the motor
Place a wooden board underneath the impeller to prevent damage to its edges
Fit the motor on the pump body and secure it with the screws