WEG Electric Motor W22Xtb L80

Warning: This procedure requires trained personnel with PPE!

Ensure the machine is in a cold state and disconnected from the power supply.

Is the machine in a safe environment?

Insulate and test each phase separately.

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

Disconnect and ground all external devices during the insulation resistance measurement.

Measure the insulation resistance one minute after the voltage has been applied to the winding.

Ground the terminals before and after each measurement.

Ground the capacitor (if any) to ensure that it is fully discharged before the measurement is taken.

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.

Motor disconnected from the power supply and is completely stopped?

Motor terminals inside the terminal box free of dangerous voltages?

Motor surface cooled to ambient temperature before opening the terminal box or disassembling the motor?

Record installation conditions such as terminal connection diagram and alignment or leveling conditions

Motor disassembled without scratching machined surfaces or damaging threads?

Motor assembled on a flat surface ensuring a stable support base?

Footless motors fixed or locked on the base to prevent accidents?

Insulated components such as windings, insulated rolling bearings and power cables handled carefully to avoid damage?

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 the oven for drying process

Wound stator placed in the oven for two hours

Stator allowed to cool to room temperature after drying process

Enter the measured insulation resistance

Stator drying process repeated if required insulation resistance does not meet specified values

Warning: Proper lubrication plays a vital role in motor performance

Warning: Excess grease causes bearing overheating, resulting in bearing failure

Warning: The grease and oil disposal should be made in compliance with applicable laws in each country

Motor without grease fitting lubricated properly?

Motor with grease fitting lubricated properly?

Visual inspection of the motor and coupling

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

Replacement of damaged parts as required

Measurement of the insulation resistance

Cleaning of the motor enclosure

Removal of oil spills and dust accumulation from the motor frame surface

Cleaning of motors with potential risk for electrostatic charge accumulation

Check cooling fan condition and clean the air inlet & outlet openings

Investigation of the actual condition of the seals and replacement, if required