TECO Electric Motor AEUHX

Inspect the check valve and stop valve in the discharge line

Ensure the check valve is protecting the pump from reverse flow and excessive backpressure

Verify the stop valve is used correctly during priming, starting, and shutting down the pump

Close the stop valve before stopping the pump, especially when operated against a high static head

Record any issues found during the inspection

2.4 Insulation resistance test during storage

Is the insulation resistance above the specified values during storage?

Perform insulation resistance test every three months

4.1.2 Measurement of insulation resistance

Ensure terminals are not touched during and immediately after measuring

Ensure power supplies are disconnected and no moving parts are present

Select the rated voltage range for measurement

Enter the measured insulation resistance value

Calculate the required insulation resistance using the formula: (Rated voltage (v) / 1000 + 1) x 10 (MΩ)

Change the oil at regular intervals

Determine the time between oil changes based on operating conditions

Use good grade, oxidation-corrosion-inhibited turbine oils

Specify the viscosity of the oil based on bearing type, size, load, speed, ambient temperature, and cooling water

Is the ambient temperature near or below freezing?

Preheat the oil or use special oil if necessary

Ensure oil-metering hole is clear

Refer to measures stated in 4.1.2 'Measurement of insulation resistance' for insulation resistance standards.

Check for accumulation on coils

Are coils kept warm when motor is not in use if moisture is present?

Inspect for discoloring due to overheating

Ensure no movement of wedges from their original position

Ensure the binding at the coil end is in its normal position

Refer to Table 1 for applicable interval in hours for your specific bearing number and RPM

Is the motor used in dirty or high ambient temperature or high humidity environments?

Select the type of grease used for the motor

Is there a lubrication nameplate attached to the motor?

Ensure identical grease or its equivalents are used when maintaining lubrication schedule

Ensure no mixing of different kinds of grease