Pompetravaini Centrifugal Pump MILLS

CAUTION: Possible contact with hazardous media and hazardous substances, cold or warm. Operate only provided with apposite protective devices.

Wear appropriate protective devices

Remove loose materials from piping

Remove foreign particles from reservoirs

Pay particular attention to cleaning welded piping

Ensure components welded to piping are clean

Ensure the engine is off and cooled down before starting the oil change.

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

Remove the vent plug of the bearing frame.

Upset the oil-cruet to drain the old oil.

Has all the old oil been drained completely?

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

!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 reading

Is the static pressure within the acceptable range?

Record the vacuum pressure reading

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 per minute for 20 mm shaft, up to 200 drops per minute for 100 mm shaft)?

Adjust the dripping if the temperature is high or dripping is insufficient