TECO Electric Motor AEGH

5.5.5 Oil re-lubrication — For oil lubrication types only

Check the current oil level in the sight gauge

Is the oil level above the maximum shown on the sight gauge?

Is the oil level below the minimum shown on the sight gauge?

Was excessive make-up oil added?

Change the oil at regular intervals

Determine the interval for oil changes based on operating conditions

Is the ambient temperature high, requiring more frequent oil changes?

Avoid operating the motor with oxidized oil

Use only good grade, oxidation-corrosion-inhibited turbine oils from reputable companies

Is the ambient temperature near or below freezing?

Preheat the oil or use special oil if necessary

Use the lubrication oil stipulated on the lubrication nameplate, if attached

Inspect the following valves for normal function

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

Verify the stop valve is operational during priming, starting, and shutdown of the pump

Is the stop valve closed before stopping the pump?

Close the stop valve before stopping the pump if operating against a high static head

Clean the interior of the bearing housing and flush with clean oil or kerosene

Wipe the bearing halves and shaft journal with a lint-free cloth soaked in clean oil

Inspect all parts for imperfections

Remove imperfections using appropriate methods such as stoning, scraping, or filing, followed by thorough cleaning

Check the condition of the floating labyrinth seal halves for cracks or chips

Ensure the bottom half seal's drilled holes are positioned at the bottom toward the inside of the bearing

Apply a bead of Curil-T around the seal half O.D.'s on both sides adjacent to the garter spring groove

Place the bottom seal half on top of the shaft and roll it into position

Check for reverse shock load conditions

Inspect the frequency of pump starting and stopping

Evaluate the condition of ratchet pins for deformation

Listen for unusual noises from the ratchet pins

Replace ratchet pins if necessary

Inspect and maintain the check valve in the discharge line

Inspect and maintain the stop valve in the discharge line