WEG Electric Motor W22Xec 90S

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 for drying process

Wound stator placed in oven for two hours

Stator allowed to cool to room temperature after drying process

Enter the measured insulation resistance

Does the insulation resistance meet the values specified in Table 5.3?

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?

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

Warning: This procedure requires trained personnel with PPE!

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

If machine is not disconnected, stop the procedure and disconnect it from the power supply

Is the environment safe for insulation resistance measurement?

If environment is not safe, stop the procedure and ensure safety

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

Enter the applied voltage as per Table 5.3

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: This procedure requires trained personnel with PPE!

This procedure is for Motors W22Xec / W22Xtb, frame sizes 90 and 132

Relubricate bearings every 25000 running hours

Add 4 g of grease for frame size 90

Add 11 g of grease for frame size 132

Lubrication procedures must be carried out according to the type of lubricant (oil or grease)

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

Excess grease causes bearing overheating, resulting in bearing failure