Breakdown,
Reasons,
Remedies
Ausgabe
issue
A / 05.01.1995
Dokument
document
OM.REC.01e
Blatt
sheet
1 (1)
Breakdown
pu
m
p
ha
s
no
su
ct
io
n
pu
m
p
co
nv
ey
s
irr
eg
ul
ar
ly
th
e
co
nv
ey
in
g
ca
pa
ci
ty
is
no
t
ac
hi
ev
ed
pr
es
su
re
is
no
t
ac
hi
ev
ed
pu
m
p
do
es
no
ts
ta
rt
pu
m
p
ha
s
se
iz
ed
or
ha
s
st
op
pe
d
co
nv
ey
in
g
pu
m
p
op
er
at
es
no
is
ily
m
ot
or
be
co
m
es
to
o
w
ar
m
th
e
st
at
or
w
ea
rs
ou
te
ar
ly
sh
af
ts
ea
lin
g
le
ak
s
seepex progressive cavity pumps will operate trouble-free if they are
used in accordance with our data sheet (see item 9) and our
operating and maintenance instructions:
1
2
3
4
5
6
7
8
9
10
Reasons / Remedies
X
X
a
Adhesion between rotor and stator excessive (as delivered). Lubricate
(soft soap, genuine soap) between stator and rotor.
Then turn the pump by means of the tool W2 .
X
b
Check rotational direction of the pump per data sheet and nameplate. In
case of wrong direction, change wiring of motor.
X
X
X
X
X
c
Suction pipe or shaft sealing leak. Eliminate the leakage.
X
X
X
X
d
Suction head too high (item 6.5.3.1). Check suction head with vacuum
gauge. Increase the suction pipe diameter and fit larger filters. Open the
suction valve fully.
X
X
X
e
Viscosity of the liquid too high.
Check and accommodate per data sheet.
X
X
X
f
Wrong pump speed. Correct pump speed per data sheet.
X
X
g
Avoid inclusions of air in the conveying liquid.
X
X
X
X
X
h
Pressure head too high (point 6.5.3.2). Check pressure head with
manometer. Reduce the pressure head by increasing the pressure pipe
diameter or by shortening the pressure pipe.
X
X
X
X
X
i
Pump runs partially or completely dry (point 6.5.2). Check flow in the
suction chamber. Install dry running protection TSE.
X
X
j
Check coupling, possibly pump shaft is misaligned to drive. Check
whether coupling gear is worn. Realign coupling. The coupling gear has
perhaps to be replaced.
X
X
k
Speed too low. Increase the speed when high suction performances are
required and when the liquid is very thin.
X
X
X
l
Speed too high. Reduce the speed when pumping products with high
viscosities - danger of cavitation.
X
m
Check the axial play in the coupling rod linkage. Check that the bush
has been installed correctly see document OM.PJT.__.
X
X
X
X
X
n
Check for foreign substances in the pump. Dismantle the pump, remove
foreign substances and replace worn parts.
X
X
X
X
o
Stator or rotor worn. Dismantle the pump and replace defective parts.
X
X
X
X
p
Joint parts worn. Replace worn parts and fill with special pin joint grease
.
X
X
X
X
q
Suction pipework partially or completely blocked. Clean suction
pipework.
X
X
X
X
X
r
Temperature of the pumping liquid too high. Excessive expansion of the
stator. Check temperature and install rotor with diameter smaller than
specified.
X
X
X
X
X
s
Gland packing too strongly tightened or worn. Ease or tighten stuffing
box. Replace defective packing rings.
X
X
X
X
t
Solid contents and/or size of solids too large. Reduce pump speed and
install perhaps a screen with suitable meshes. Increase fluid share.
X
X
X
X
u
When the pump is non operational the solids settle out and become
hard. Clear and flush the pump immediately.
X
X
X
X
X
v
The liquid becomes hard when temperature falls below a certain limit.
Heat the pump.
X
X
X
X
w
Stator swollen and unsuitable for the pumped liquid. Select a suitable
stator material. Use perhaps rotor with diameter smaller than specified.
X
X
x
The bearing in the drive casing of the pump or in the drive engine is
defective. Replace bearing.
X
y
Mechanical seal defective. Check seal faces and O-rings. If necessary
replace corresponding defective parts.
24
Содержание BW 10
Страница 26: ......
Страница 27: ......
Страница 28: ......
Страница 30: ......
Страница 32: ......
Страница 63: ......
Страница 65: ...Section 1 General Information ii Table of Contents MN400 ...
Страница 79: ...3 6 Maintenance Troubleshooting MN400 ...
Страница 80: ...Baldor District Offices Baldor District Offices Baldor District Offices ...
Страница 82: ......
Страница 84: ......
Страница 85: ...Meadowbank mining Corp ACP 700R Technical Data Sheet Reference NC01 DOSING PUMP ...
Страница 86: ......
Страница 111: ......
Страница 112: ......
Страница 113: ......
Страница 121: ......
Страница 122: ......
Страница 123: ......
Страница 124: ......
Страница 158: ...BIM 1010 2005 03 6 www nord com ...
Страница 162: ...BIM 1010 2005 03 10 www nord com PARTS LIST ...
Страница 163: ...BIM 1010 2005 03 11 www nord com NOTES ...
Страница 180: ......
Страница 181: ......
Страница 186: ......