Problem
Probable cause
Possible remedy
Pump Does
not Deliver
Water
Pump
vibrates is
noisy and
drawing
excessive
current
Wrong direction of
rotation
Wrong selection of
Pump
Obstruction in piping
system
Foreign particles lodged
in impeller
Inappropriate pipe
fitting
Motor axial or radial
bearing are damaged or
shaft is bent
Sand inside or
corrosiveness
Rotating parts rubbing
against Stationary parts
because radial bearing
bush is worn out or shaft
is bent.
Check the connection:
For 3-phase pumpsets
interchange any 2 phases
Select proper pumpset
Clean the pipes
Clear the impeller and
casing
Fit the pipes properly
Replace defective
components.
Clean the pump impeller
and bearing components,
replace if needed.
Replace the defective
components
7
MONOSUB R
9
0
2
9
0
1
.0
1
1
5
6
1
0
7
9
2
0
2
3
0
5
9
-4
7
3
5
0
.0
1
9
2
0
.0
1
4
2
1
5
4
5
.0
1
8
1
-5
9
9
4
0
3
8
4
.0
1
8
1
8
3
5
0
.0
2
5
9
-1
2
8
1
-6
0
9
0
1
.0
2
9
0
5
8
1
9
8
2
4
5
4
5
.0
2
9
3
2
4
0
0
.1
9
0
2
9
2
0
.0
1
9
0
5
9
2
0
.0
2
9
2
0
.0
2
3
8
4
.0
2
5
9
-4
7
Ex
p
lo
d
ed
V
ie
w
-
S
in
g
le
P
h
as
e
8
MONOSUB R
Pa
rt
N
o
.
Pa
rt
N
am
e
35
0.
01
B
ea
ri
n
g
h
o
u
si
n
g
23
0
Im
p
el
le
r
15
6
D
is
ch
ar
g
e
n
o
zz
le
10
7
D
is
ch
ar
g
e
C
as
in
g
81
-6
0
D
ia
p
h
ra
g
m
C
as
in
g
81
-5
9
St
at
o
r
59
-4
7
Ey
e
B
o
lt
59
-1
2
D
ia
p
h
ra
g
m
Pa
rt
N
o
.
Pa
rt
N
am
e
82
4
C
ab
le
81
9
Sh
af
t
81
8
R
o
to
r
54
5.
01
/.0
2
B
ea
ri
n
g
B
u
sh
42
1
O
il
Se
al
40
0.
1
W
as
h
er
38
4.
01
/.0
2
Th
ru
st
P
la
te
35
0.
02
B
ea
ri
n
g
h
o
u
si
n
g
Pa
rt
N
o
.
Pa
rt
N
am
e
94
0
K
ey
93
2
C
ir
cl
ip
92
0.
01
/.0
2
H
ex
N
u
t
92
0
H
ex
lo
ck
N
u
t
90
5
Ti
e
b
o
lt
90
2
St
u
d
90
1.
02
H
ex
b
o
lt
90
1.
01
H
ex
b
o
lt
