Zenit Group | 31 Mar 2023
UNIQA - ZUG V WET
Complete dismantling - ZUG V model, WET version
- Stand the pump on the workbench
- Undo the pump body fixing screws
- With the aid of a hoist, lift the motor and separate it from the pump body
- Loosen the impeller fixing screw BUT DO NOT remove it
- Use a lever to free the impeller
- Undo the fixing screw and remove the impeller
- Stand the motor on the bench
- Undo the fixing screws of the cable gland and the motor cover
- With the aid of a hoist, lift the motor cover and separate it from the case
- Undo the ground connection screw
- Disconnect the power cable from the terminal board
- Place the motor cover on the bench
- Remove the fixing stud bolt
- Remove the cable gland
- Cut the tie and extract the cable from the motor cover
- Remove the rubber gasket and extract the cable gland
- Remove the O-ring from the top bearing support
- Disconnect the motor cables from the terminal board
- Remove the terminal board
- Using two suitable screws, extract the top bearing support
- With the aid of eye-bolts and slings of suitable size, suspend the motor horizontally
- Unscrew the oil chamber plugs and drain the contents into a suitable vessel
- Stand the motor on the bench and remove the eye-bolts
- Remove the pump plate O-ring and fixing screws
- Remove the pump plate
- Remove the O-ring and the oil lifter
- Remove the snap ring and the washer
- Extract the counterface
- Remove the O-rings from the seats
- Undo the fixing screws of the oil chamber and remove it
- Remove the O-ring
- Extract the first mechanical seal (impeller side) and the shim washers
- Remove the snap ring
- Extract the second mechanical seal (motor side)
- Remove the snap ring
- With the aid of two suitable screws, extract the bushing and remove the counterface and the O-ring
- Remove the snap ring and spacer
- Remove the bottom bearing support fixing screws
- Fix an eye-bolt to the shaft and extract it using a hoist and a suitable sling
- Undo the nut and remove the sensor cable
- Unscrew the cable gland and extract the sensor
- Remove the O-ring of the bottom bearing support
- Lock the stator with the drivers and proceed to extract it using a press