Flowserve BP Uživatelský manuál stáhnout pdf (Strana 38)

BP USER INSTRUCTIONS ENGLISH 85392725 10-09 (E)

Page 38 of 44 flowserve.com

FAULT SYMPTOM

Pump overheats and seizes

Bearings have short life or are damaged

Pump vibrates or is noisy

Mechanical seal has short life

Mechanical seal leaks excessively

Pump requires excessive power

Pump loses prime after starting

Insufficient pressure developed

Insufficient capacity delivered

Pump does not deliver liquid

PROBABLE CAUSES PROBABLE REMEDIES

B. Mechanical troubles

● ● ● ● ● ●

Misalignment due to pipe strain.

Check the flange connection and eliminate

strains using elastic couplings or a method

permitted.

●

Improperly designed foundation.

Check setting of baseplate: tighten, adjust, grout

base as required.

● ● ● ● ●

Shaft bent.

Check shaft runouts are within acceptable

values.

CONSULT FLOWSERVE.

● ● ● ●

Rotating part rubbing on stationary part

internally.

Check and CONSULT FLOWSERVE, if

necessary.

● ● ● ●

Foreign materials enter into clearance

between rotating part and stationary part.

Remove foreign materials.

Check and CONSULT FLOWSERVE, if

necessary.

● ● ● ● ●

Bearings worn Replace bearings.

● ● ●

Wearing ring surfaces worn. Replace worn wear ring/surfaces.

● ●

Impeller passage partially clogged. Clean impeller.

● ● ●

Impeller damaged or eroded.

Replace or CONSULT FLOWSERVE for

improved material selection.

●

Leakage under sleeve due to joint failure. Replace joint and check for damage.

● ●

Shaft sleeve worn or scored or running off

center.

Check and renew defective parts.

● ● ●

Mechanical seal improperly installed.

Check alignment of face or damaged parts and

assembly method used.

● ● ●

Incorrect type of mechanical seal for

operating conditions.

CONSULT FLOWSERVE.

● ● ● ● ●

Shaft running off center because of worn

bearings or misalignment.

Check misalignment and correct if necessary. If

alignment satisfactory check bearings for

excessive wear.

● ● ● ● ●

Impeller out of balance resulting in vibration.

● ● ●

Abrasive solids in liquid pumped.

● ●

Internal misalignment of parts preventing seal

ring and seat from mating properly.

Check and CONSULT FLOWSERVE.

● ●

Mechanical seal was run dry.

Check mechanical seal condition and source of

dry running and repair.

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