Pompetravaini Centrifugal Pump TMA

!DANGER: Danger due to collision, crushing or harm.

Wait for the complete pump stopping before handling the unit.

Drain the pump or close the pipes by means of a valve to prevent sudden rotation.

Wait for the pump to cool down to avoid contact with high temperature surfaces.

Disconnect the power supply and any other connections.

Ensure power supply is restored only by the maintenance operator.

Ensure presence of at least two operators and inform the foreman of maintenance in progress.

Wear proper safety equipment (hard hat, safety glasses, gloves, safety shoes, etc.).

Remove vent plug of the bearing frame

Pour oil into the bearing frame through the hole of plug till you can see oil in the oil-filler elbow

Fill the oil-filler pouring oil directly into the oil-cruet and NOT into the elbow

Replace the cruet in normal position

Let oil flow into bearing frame

Repeat operation till the oil level in the cruet ceases to decrease

Ensure the engine is off and cooled down

Gather necessary tools and materials (oil-cruet, new oil, etc.)

Remove vent plug of the bearing frame

Dispose of the exhausted oil following current regulations

Pour oil into the bearing frame through the hole of plug till oil is visible in the oil-filler elbow

!DANGER: Danger due to fluids in pressure. Carry out sealing tests provided with apposite protective devices.

Ensure all protective devices are in place

Verify that the installation is complete

Record the static pressure in the piping

Is the static pressure within the acceptable range?

Record the vacuum pressure in the piping

Is the vacuum pressure within the acceptable range?

Adjustment of Packing Seals Without External Flushing

Loosen the stuffing box nuts to allow a strong drip to escape

Verify the extent of the leak (drops per minute)

Tighten the stuffing box nuts progressively until the leak is reduced to a continuous and controlled drip

Wait a few minutes to allow the leak to stabilize

Check the temperature of the liquid that comes out

Is the temperature at least ten degrees lower than the boiling temperature of the flushing liquid and below 90°C?

Is the dripping rate correct (60 drops/min for 20 mm shaft, up to 200 drops/min for 100 mm shaft)?

Adjust the dripping if the temperature is high or the dripping rate is incorrect