WEG Electric Motor W22Xtb 63

Warning: Proper lubrication plays a vital role in motor performance. Only use the grease or oil types, amounts and lubrication intervals recommended for the bearings.

Type of lubricant used (oil or grease)

Operating temperature of the motor

Compliance with grease and oil disposal laws

Excess grease causes bearing overheating, resulting in bearing failure.

Absolute temperature on the bearing

For each increment of 15 °C above the room temperature, the relubrication intervals given in the Table must be halved.

Motor mounted in horizontal position?

Warning: All repair services on motors for use in hazardous areas must be performed by qualified personnel and in accordance with applicable laws and regulations.

Always use proper tools and devices for motor disassembly and assembly.

Disassembly and assembly services may only be carried out after the motor has been disconnected from the power supply and is completely stopped.

Dangerous voltages may be present at the motor terminals inside the terminal box since capacitors can retain electrical charge even when not connected to a power source.

Dangerous voltages may be present when space heaters are connected to the motor or when motor windings are used as space heaters.

Dangerous voltages may be present at the motor terminals when driven by a frequency inverter even when the motor is completely stopped.

For enclosure-protected motors, open the terminal box and/or disassemble the motor only after the enclosure surface has cooled to ambient temperature.

Record installation conditions such as terminal connection diagram and alignment or leveling conditions before starting disassembly.

Use these records for later assembly.

Warning: This procedure requires trained personnel with PPE!

The machine must be in a cold state and disconnected from the power supply.

The insulation resistance must be measured in a safe environment.

Is the machine in a cold state and disconnected from the power supply?

Is the environment safe for insulation resistance measurement?

It is recommended to insulate and test each phase separately.

Is each phase insulated and tested separately?

During the test of one phase, the other phases must be grounded.

Are the other phases grounded during the test of one phase?

Visual inspection of the motor and coupling

Check for abnormal noises, vibrations, excessive heating, wear signs, misalignment or damaged parts

List of damaged parts to be replaced

Insulation resistance measurement

Oil spills and dust accumulation removed from the motor frame surface

Motors with potential risk for electrostatic charge accumulation cleaned with a damp cloth

Cooling fan condition checked and air inlet & outlet openings cleaned

Condition of the seals checked and replaced if required

Warning: This procedure requires trained personnel with PPE!

End shields, rotor with shaft, fan cover, fan and terminal box removed

Wound stator with frame transferred to oven

Stator placed in oven for two hours

Is the motor larger? If yes, extend drying time

Stator cooled to room temperature after drying

Enter the measured insulation resistance