Goulds Pumps Vertical Turbine Pump VIT-FF 14D

6.3 Thrust pot lubrication guidelines

Flush the oil reservoir to remove all grit particles in the oil reservoir sump

Use the specified type of oil for flushing the reservoir

Observe the instructions in the Thrust Pot IOM for oil changing requirements

Is the seal leaking slightly at start-up?

Does the leak decrease while running?

Does the leak remain constant during operation?

Replacement guidelines — Mechanical seal checks

Check that the shaft or sleeve is free of pits, burrs, or sharp edges.

Remove any burrs and sharp edges by polishing with a fine emery cloth.

Replacement guidelines — Impeller replacement

Replace impeller vanes if grooved deeper than 1.6 mm or worn evenly more than 0.8 mm.

Replace vane edges if cracks, pitting, or corrosion damage are observed.

Remove the bowl and impeller wear rings

Remove locking methods from wear rings

Cut two V-shaped grooves on the bowl or impeller wear ring approximately 180° apart using a diamond-point chisel.

Knock the end of one half of the ring in and pry the ring out using a chisel or drift punch.

For high-alloy materials, machine the wear ring off using a lathe without damaging the ring seat.

Installing the turbine bowl and impeller wear ring

Check for unusual noise, vibration, and bearing temperatures of thrust pot or electric motor

Ensure bearing housings are free from insulation and dust accumulation

Check the pump and piping for leaks

Confirm completion of initial procedures

Verify mechanical seal lubrication and piping connection

Verify operation and regulation of cooling, heating, and flushing lines

Verify connections to driver and starting device match wiring diagram

Verify voltage, phase, and frequency on motor nameplate agree with line current

Rotate shaft manually to ensure impellers are not binding

Verify driver bearings are properly lubricated and check oil level in housing

Verify auxiliary seal components are properly vented