Centrifugal Pump Repair Data Form: Performed By: Date

Educational Services

Centrifugal Pump Repair Data Form Initiation Date: ____________________

Work Order No.: ____________________

Equipment No.: ___________________

Service: ___________________________

Plant Location: ____________________

Mfr./Model/Serial No.: ____________________________________________________________ Reason for Repair:____________________________________________________________________________________________________ Observations Prior to Failure: __________________________________________________________________________________________ Tagged for Pump Decontaminated: Yes No Initials: _____________ Hazardous Materials: Yes No Initials: _________ Impeller Clearance (in.)

Before

After

Comments

Impeller Front to Case Impeller Back to Rear Cover

Performed by:

Date:

Wear Ring Condition Stationary (pump)

f

r

Rotating (impeller)

f

r

Performed by:

Date:

DIAL INDICATOR CHECKS Shaft end play should be measured as a check on the thrust bearing and its fit in the housing. Total indicated end play should be .002” TIR max.

Radial deflection - should be measured to check the condition of the bearings and their fit in the housing and on the shaft. If more than .002” TIR, investigate bearing and bearing fits. Especially the bore for the radial bearing fit. Shaft run-out should be measured to be sure the shaft is straight and round. If the run-out exceeds .002” TIR, remove the shaft or sleeve and straighten or replace.

Impeller

Coupling

Stuffing box face perpendicularity can cause the stationary seat to be out-of-square with the shaft. If exceeds .003” TIR, review seal chamber condition and check bearing frame adapter face.

Bearing frame adapter face = ______ Concentricity of seal gland register If exceeds .005” TIR, review seal chamber condition and check bearing frame adapter pilot.

Bearing frame adapter pilot = _____ Performed by: Date: Actual tolerances are dependent on the size of the pump and pump manufacturer tolerances.

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Educational Services

Centrifugal Pump Repair Data Form

BEARING FITS

Manufacturer Tolerance

Outboard Bearing

Actual Reading

Comments

Bearing

Bearing / shaft

Shaft

Thrust Bearing

Fit

Inboard Bearing

Bearing

Bearing / shaft

Shaft

Radial Bearing

Fit

Outboard Bearing

Bearing

Bearing / Housing

Housing

Thrust Bearing

Fit

Inboard Bearing

Bearing

Bearing / Housing

Housing

Radial Bearing

Fit

Performed by:

Date:

MECHANICAL SEAL INSTALLATION Manufacturer:

Size:

Type: Single.

Setting dimension:

Drawing No.:

ID No.:

Bench Tested at Performed by:

Psig

________________________

liquid / air Date:

SHAFT ALIGNMENT Pipe Strain: Suction = Acceptable Discharge = Acceptable

Corrective action needed Corrective action needed

Shaft Alignment Check (see alignment worksheet) Reverse Dial Indicator Method The motor and pump shaft should be aligned within 0.0005” multiplied by the coupling span. Shim Quantity Used: Front Right _________________ Left ___________________

Comments _____________________________________________ _____________________________________________ Vertical Offset = Horizontal Offset

________________________

= ________________________

Comments:

Back Right _________________

Left ___________________

Hot Alignment Check (see alignment worksheet) Driver Offset = _______________________________ Vertical Offset

Dual

=

_______________________________

Horizontal Offset =

_______________________________

Performed by:

Comments:

Date:

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