Flowserve BP Uživatelský manuál stáhnout pdf (Strana 39)

BP USER INSTRUCTIONS ENGLISH 85392725 10-09 (E)

Page 39 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

● ●

Internal misalignment due to improper repairs

causing impeller to rub.

Check method of assembly, possible damage or

state of cleanliness during assembly.

Remedy or CONSULT FLOWSERVE, if

necessary.

● ● ●

Excessive thrust caused by a mechanical

failure inside the pump.

Check wear condition of impeller, its clearances

and liquid passages.

●

Oil has deteriorated. Change to new oil.

●

Kind of oil is not suitable. Change to suitable oil.

● ●

Lack of lubrication for bearings.

Check hours run since last charge of lubricant,

the schedule and its basis.

● ●

Lubricating oil supply pressure is too low.

Check oil unit and lubricating orifice.

CONSULT FLOWSERVE.

● ●

Improper installation of bearings (damage

during assembly, incorrect assembly, wrong

type of bearing etc).

Check method of assembly, possible damage or

state of cleanliness during assembly and type of

bearing used. Remedy or CONSULT

FLOWSERVE, if necessary.

● ●

Damaged bearings due to contamination.

Check contamination source and replace

damaged bearings.

C. MOTOR ELECTRICAL PROBLEMS

● ● ● ●

Wrong direction of rotation. Reverse 2 phases at motor terminal box.

● ●

Motor running on 2 phases only. Check supply and fuses.

● ● ●

Motor running too slow.

Check motor terminal box connections and

voltage.

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