Flowserve Pump MK3 HSI 2×1.5-8

Measure the current process temperature

Select the appropriate impeller clearance based on the process temperature

Install a new impeller gasket [4590] if the impeller has been removed from the shaft

Rotate the bearing carrier [3240] clockwise until the impeller comes into light rubbing contact with the suction cover

Rotate the shaft to accurately determine the zero setting

Rotate the bearing carrier counter-clockwise to achieve the proper clearance

Ensure all parts are thoroughly cleaned and inspected

Use new bearings, O-rings, gaskets, and lip seals

List any parts showing wear or corrosion that were replaced

Measure shaft runout (should be 0.025 mm or less)

Is radial deflection within acceptable limits (0.05 mm or less)?

Measure axial shaft movement (endplay) on Durco pump (should be 0.03 mm or less)

Measure seal chamber face squareness run-out (should be less than 0.08 mm)

Measure seal chamber register concentricity (should be less than 0.13 mm)

6.1 Maintenance schedule / 4.8 Final shaft alignment check

Check coupling alignment and re-align if necessary

Operate the pump for at least an hour or until it reaches final operating temperature

Shut the pump down and recheck alignment while the pump is hot

Consider piping thermal expansion effects on alignment

Verify parallel misalignment is no more than 0.05 mm (0.002 in.)

Verify angular misalignment is no more than 0.0005 mm/mm (0.0005 in./in.)

Check indicator on coupling for movement when any driver fastener is loosened

Oil Bath Lubrication Requirements

Record maximum external housing temperature

Record maximum bearing exposure temperature

Oil Specifications and Precautions

Ensure oil is free of contaminants

Verify oil contains necessary additives

Confirm recommended lubricant is used

Store the pump in a clean, dry location away from vibration.

Leave flange covers in place to keep dirt and other foreign material out of pump casing.

Turn the pump shaft at regular intervals to prevent brinelling of the bearings and the seal faces, if fitted, from sticking.

Is the pump stored for more than 6 months?

Ensure protection of the pump after unpacking.

Has oil been added to the bearing housing?

Are inhibitor oils and greases used if units are idle for extended periods after addition of lubricants?

Rotate the pump shaft approximately 10 revolutions every three months.