EBARA MMD Manuel D'entretien Et De Maintenance page 28

PROBLEM
4.
EXCESSIVE BREAK
POWER
5.
THE SEAL LEAKS
EXCESSIVELY
6.
THE PUMP VIBRATES
AND IT IS NOISY
L L 0 0 0 0 1 / E B – R e v . E –
L L 0 0 0 0 1 / E B – R e v . E –
PROBABLE CAUSE
4.1 PUMP PERFORMANCES ARE
DIFFERENT THAN RATED.
4.2 LIQUID SG HIGHER THAN
SPECIFIED.
4.3 ABNORMAL INTERNAL RUBBING
(ROTATING PARTS RUB AGAINST
FIXED PATRS).
5.1 WORN MECHANICAL SEAL.
5.2 WORN SHAFT AT MECH SEAL
POSITION.
6.1 UNBALANCED ROTATING
ASSEMBLY.
6.2 MOTOR BEARINGS FAILURE.
6.3 THE PUMP RUNS WITH TOO LOW
OR TOO HIGH CAPACIT; ALSO THE
SAME CAUSES AS POINTS 1.3, 2.1,
2.2.
6.4 PUMP AND/OR PIPING NOT
FIRMLY FASTENED.
1 2 / 2 0 1 5 I T A / G B
1 2 / 2 0 1 5 I T A / G B
DELIVERY GATE VALVE
PARTIALLY CLOSED..
PUMP NOT SUITED TO THE
SERVICE OR DELIVERY GATE
VALVE PATIALLY CLOSED.
REPAIR THE PUMP, SEE CHAP.
8.
SEE CHAP. 8.
REPAIR THE PUMP, SEE CHAP.
8.
REPAIR THE PUMP, SEE CHAP.
8.
SEE CHAP. 8.
OPERATE THE PUMPS
DIFFERENTLY; REMOVE THE
CAUSES OF THE
MISFUNCTIONING.
CORRECT INSTALLATION.
11
REMEDY