Inosculating innovative technologies, interpreting the art of fluid!
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SLOW DOUBLE-STAGE AND DOUBLE-SUCTION BISECT VOLUTE TYPE CENTRIFUGAL PUMP
13661725188
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Product outline
Product characteristic
Main part material
About the model
Schematic drawing of pump turning
Pump structure darwing
Performance data
Performance curve
Installation overall dimension drawing
Transportation and hoisting of pump
Installation of pump
Start, operation and stop of pump
Disassembly and assembly of pump
Maintenance of pump
13
13661725188
SLOW
o o-10 C 80 C
1480r/min
8000
( ZL200520046059.0
SLOW Centrifugal Pump of Double-stage and Double-
suction Bisect Volute Type is specially designed and manufa-
ctured by our company for using in the occasions which req-
uire large flux and high lift, such as iron works, electric power
plants and pump station, etc. In combination with advanced
design experience of double-stage bisect pump at home and
aboard, the products are processed by using special machine
tool. This product is applicable for feeding such media as water
o oor liquid similar to water at the temperature from -10 C to 80 C
Water inlet and outlet are all installed in pump body. Just
hoist the pump cover when overhaul, greatly facilitating
maintenance.
Primary-stage double-suction and secondary-stage single-
suction of impeller adopted, greatly improving anti-cavit-
ation performance of pump and decreasing axial dimensi
on of pump.
At rotary speed of 1480 rpm, avoiding vibration caused by
high rotary speed.
In comparison with single-stage pump, the products have
same performance and smaller impeller diameter and stable
operation.
The pumping chamber adopts double-volute design, redu-
cing radial force.
Applying rolling bearing and lubrication with grease or thin
oil and facilitating the maintenance of bearing.
Designing in virtue of international advanced hydromech-
anics software, modeling by using 3DM software, and ch-
ecking the strength with finite element software, ensuring
high efficient, stable and reliable operation of pump.
Fully mechanical seal ensures no leakage within 8000 h,
and packing seal is customizable.
The pump turns clockwise, and anticlockwise turning is
customizable.
This product has applied for national patent (pate nt num-
ber: ZL200520046059.0)
13661725188
Part Material
Pump body
Pump cover
Impeller
Cast iron
Magnesium iron
Cast steel
Cast steel
Magnesium iron
Cast steel
Cast iron
Magnesium iron
Cast steel
Stainless steel
HT250
QT400-18
ZG230-450
HT250
QT400-18
ZG230-450
HT250
QT400-18
ZG230-450
1Cr18Ni9Ti
Shaft
Seal ring
Carbon steel
Stainless steel
Cast steel
40Cr
2Cr13
HT200
2Cr13
QT400-18
denotes general supply, to be supplied as request.
Magnesium iron
Stainless steel
SL OW 250 - 610 2
2 Two impellers
Nominal diameter of impeller
Outlet diameter of pump
Double-stage and double-suction centrifugal pump
Shanghai Liancheng
Part Material
13661725188
ABC
The pump can also be manufactured as per A, B and C
turning directions, which shall be specified in contract.
A
B C
Water inlet
Clockwise rotation of motor
Water outlet
Anticlockwise turning
of motor
Water outlet
Water inlet
Clockwise rotation of motor
Water outlet
Water inlet
Anticlockwise turning
of motor
Water inlet
Water outlet
clockwise normal
13661725188
SL
O
W
15
0-
57
0
2
S
LO
W
20
0-
53
0
2
St
ru
ct
ur
al
d
ia
gr
am
1
(f
or
S
LO
W
15
0-
57
0
2
an
d
SL
O
W
20
0-
53
0
2)
Pu
m
p
ca
sin
g
1
2
3
4
5
6
7
8
9
10
W
at
er
-s
ea
le
d
p
ip
e
M
ec
ha
ni
ca
l
se
al
Pu
m
p
co
ve
r
Se
co
nd
ar
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st
ag
e
im
pe
lle
r
G
la
nd
o
f
m
ec
ha
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ca
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se
al
B
ea
rin
g
bo
dy
Se
al
ri
ng
Sh
af
t
B
ea
rin
g
In
te
rs
ta
ge
co
ve
r
Sh
af
t
sl
ee
ve
A
Sh
af
t
sl
ee
ve
B
R
el
ea
si
ng
co
ve
r
Pr
im
ar
y-
st
ag
e
im
pe
lle
r
C
lu
tc
h
B
al
an
ci
ng
w
at
er
p
ip
e
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16
1
2
3
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10
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12
13
14
15
B
ea
rin
g
Se
al
ri
ng
13661725188
SL
O
W
25
0-
61
0
2
St
ru
ct
ur
al
d
ia
gr
am
2
(f
or
S
LO
W
25
0-
61
0
2
)
pu
m
p
ca
sin
g
1
2
3
4
5
6
7
8
9
10
W
at
er
-s
ea
le
d
pi
pe
Pu
m
p
co
ve
r
Se
co
nd
ar
y-
st
ag
e
im
pe
lle
r
G
la
nd
o
f
m
ec
ha
ni
ca
l
se
al
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14
15 19
18
17
16
M
ec
ha
ni
ca
l
se
al
Se
al
ri
ng
B
ea
rin
g
bo
dy
Sh
af
t
B
ea
rin
g
In
te
rs
ta
ge
co
ve
r
B
ea
rin
g
Sh
af
t
sl
ee
ve
A
Sh
af
t
sl
ee
ve
B
Se
al
ri
ng
R
el
ea
si
ng
co
ve
r
Pr
im
ar
y-
st
ag
e
im
pe
lle
r
C
lu
tc
h
B
al
an
ci
ng
w
at
er
p
ip
e
13661725188
Pump type
Q H n P (NPSH) r W
3(m /h) (L/s) (m) (r/min) (Kw) (%) (m) (Kg)
SLOW150-570 2
SLOW150-570 2A
SLOW150-570 2B
SLOW200-530 2
SLOW200-530 2A
SLOW250-610 2
SLOW250-610 2A
SLOW250-610 2B
SLOW250-610 2C
320
450
580
89
125
161
228
210
184
1480
1480
1480
1480
1480
1480
1480
1480
1480
400 77
280
400
520
78
110
144
194
180
160
240
350
460
67
97
128
172
160
142
600
760
950
167
211
264
185
170
148
550
740
900
153
206
250
178
160
139
900
1250
1550
250
347
431
262
240
206
800
1150
1400
222
319
389
228
210
180
750
1080
1300
208
300
361
200
180
158
700
1000
1200
194
278
333
170
150
128
315
250
560
500
1120
900
800
560
76
75
78
77
83
82
81
80
4
4.2
4.4
1760
2200
2800
13661725188
H(m)
260
210
160
110
60
Pa(kw)
500
350
200
50
0 100 200 300 400 500 600 700
3Q(m /h)
NPSHr(m)
8
6
4
2
80
60
40
20
0
(%)
1480r/min
H(m)
220
180
140
100
Pa(kw)
600
400
200
0
0 150 300 450 600 750 900 1050
3Q(m /h)
(%)
80
60
40
20
0
8
6
4
2
NPSHr(m)
SLOW200-530 2
SLOW200-530 2A
1480r/min
300
H(m)
250
200
150
100
Pa(kw)
1400
1000
600
200
0 250 500 750 1000 1250 1500 1750
3Q(m /h)
0
20
40
60
80
(%)
NPSHr(m)
8
6
4
2
1480r/min
SLOW150-570 2
SLOW150-570 2A
SLOW150-570 2B
SLOW250-610 2
SLOW250-610 2A
SLOW250-610 2B
SLOW250-610 2C
13661725188
Pump type
LMotor
model
Motor
power
Motor
volt-
age
L1
3050
2930
2930
3110
3110
3600
3430
3430
3300
500
500
500
500
500
590
590
590
590
anchor bolt Motor
weight
Inlet flange
Pressure grade
Outlet flange
SLOW150-570 2
SLOW200-530 2
SLOW250-610 2
DN1
200
250
300
D3
310
370
430
D4
360
425
485
b1
34
36
40
n1-d1
12- 28
12- 31
16- 31
2.5MPa
2.5MPa
2.5MPa
DN2
150
200
250
D5
250
310
385
D6
300
360
450
b2
34
34
44
4.0MPa
2.5MPa
4.0MPa
n2-d2
8- 28
12- 28
12- 34
L2
420
420
420
470
470
550
550
550
550
L3
650
650
650
660
660
770
770
770
770
L4
160
160
160
160
160
160
160
160
160
L5
910
870
870
930
930
810
775
775
1000
L6
910
870
870
930
930
810
775
775
1000
L7
910
870
870
930
930
810
775
775
1000
L8
--
--
--
--
--
810
775
775
--
L9
1920
1790
1790
1920
1920
2200
2000
2000
1920
B
840
740
740
840
840
1060
920
920
840
B1
600
600
600
650
650
650
650
650
650
B2
500
500
500
550
550
550
550
550
550
H
400
355
355
400
400
500
450
450
400
H1
730
730
730
800
800
850
850
850
850
H2
1180
1140
1140
1250
1250
1400
1350
1350
1300
h1
300
300
300
350
350
350
350
350
350
h2
400
400
400
400
400
500
500
500
500
h3
530
530
530
600
600
650
650
650
650
C
4
4
4
6
6
6
6
6
6
2700
2130
2040
3010
2890
4500
3580
3440
3010
8-M24 400
8-M24 400
8-M24 400
8-M24 400
8-M24 400
10-M30 600
10-M30 600
10-M30 600
8-M24 400
6KV
6KV
6KV
6KV
6KV
6KV
6KV
6KV
6KV
400
315
250
560
500
1120
900
800
560
Y400-4
Y355-4
Y355-4
Y400-4
Y400-4
Y500-4
Y450-4
Y450-4
Y400-4
SLOW150-570 2
SLOW150-570 2A
SLOW150-570 2B
SLOW200-530 2
SLOW200-530 2A
SLOW250-610 2
SLOW250-610 2A
SLOW250-610 2B
SLOW250-610 2C
Outlet flange Inlet flange
L1 L2 L3 L9
C
H
H
1
H
2
L4 L5 L6 L7 L8
L
n1-d1 n2-d2
DN1
D3
D4
DN2
D5
D6
D
N
1
b1
B
b2
D
N
2 h3
h1
h2
B1 B2
Pump type
Pressure grade
13661725188
Overall dimension drawing of single pump Footing dimensions Pump weight
Pump Water content
L L1
720
800
850
500
500
590
420
470
550
L2
650
660
770
L3
150
150
150
L4
700
800
600
B
600
650
650
B1
500
550
550
B2
300
350
350
h1
400
400
500
h2
530
600
650
h3
600
640
-
L5
600
700
-
B3
1760
2200
2800
1960
2410
3060
SLOW150-570 2
SLOW200-530 2
SLOW250-610 2
DN1 D3
SLOW150-570 2
SLOW200-530 2
SLOW250-610 2
200
250
300
310
370
430
D4
360
425
485
b1
34
36
40
n1-d1
12- 28
12- 31
16- 31
2.5MPa
2.5MPa
2.5MPa
DN2
1500
200
250
D5
250
310
385
D6
300
360
450
b2
34
34
44
n2-d2
8- 28
12- 28
12- 34
4.0MPa
2.5MPa
4.0MPa
Overall dimension drawing of single pump
SLOW250-610 2 A
A view of the footing of SLOW250-610 2 Type Pump
Outlet flange Inlet flange
L1 L2 L3
L4 L5
L
A
B1 B2
D
N
1
D
N
2
h2
h1
h3
b1 b2
B
750
650 8- 28
36
0
52
0
DN1
D3
D4
DN2
D5
D6
n1-d1 n2-d2
B3
4- 28
L
5
Pump type
Pump type
Inlet flange Outlet flange
Pressure grade Pressure grade
13661725188
1
1)
2)
40 50mm
3) (
)
4)
5)
2
1)
2)
3)
4)
5)
3
o90
0.04mm 0.1mm
Pump, motor and base shall be packaged separately and
firmly fixed on the conveyer.
Hook on the cover of water pump is only for hoisting pump
cover, not for the whole pump.
Hanging ring on motor is only for hoisting mo tor, not for
the whole pump set.
For hoisting large pump, do not hoist the whole pump set
at the same time, but pump, motor and base separately.
1.pump and motor with public base
1)Concrete shall be firm enough before installation, and the
surface shall be smooth and even.
2)Insert anchor bolt into the pre-moded hole of foundation,
and place the base on the foundation. Remain distance of
40 ~ 50 mm between base and foundation, and adjust the base
with plug or adjusting screw to make it horizontal.
3)It is necessary to grout the foundation bolt and base to make
them firm. (The base must be grouted)
4)Screw down anchor bolt evenly.
5)Place the motor and pump on the base, adjust the concentri-
city of the two axles accurately, and screw down pump foot
and anchor bolt of motor at the same time.
2.pump and motor without public base
1)Insert anchor bolt into pre-moded hole of foundation, and
place the pump on the foundation, plug under pump foot,
and then adjust the horizontal of pump shaft at axle end with
level meter.
2)Motor installation is identical with pump
3)Correct the concentricity of the two axles accurately.
4)Grout foundation bolt to make it firm.
5)Screw up anchor bolt and then recheck the concentricity of
the two axles.
3.correc t the concentricity of pump shaft And motor shaft
Method: check the external diameter and end face of cl-
utch with vernier caliper or micrometer caliper, turn measur-
oing tool at 90 evenly in each measurement. The machine set
is well aligned if end face deviation and radial deviation of
clutch are separately less than 0.04 mm and 0.1 mm.
13661725188
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8
9
1.Check the following items before starting the pump
1)Whether all the instruments and meters work accurately;
2)Whether the base firmly connects with the foundation;
3)Whether the clutch is well aligned;
4)Whether the pipeline is connected as request;
5)Whether the motor is installed according to operational
instruction;
6)Whether the bearing is lubricated with grease;
7)Whether the air in the pump is exhausted;
8)Overhaul and replace mechanical seal if with large leakage;
9)Check whether turning direction of pump is identical with
that of motor by inching the motor. Frequently starting p-
ump is prohibited.
2.Start
The pump running dry is prohibited
Outlet valve shall be closed after fully exhaustion of
pump and before starting the pump. Fully open inlet valve,
close the cock of pressure gauge to prevent pressure gauge
from being damaged due to instant start and sudden rising
pressure. Start the motor after finishing the following proce
dures. Open the cock of pressure gauge when the motor runs
at normal rotary speed. Rising pressure value will be seen t-
hrough pressure gauge and then open outlet valve slowly.
Start the motor following relative operational instruction if
it does not start directly. Note: The outlet valve can only be
closed when the pump starts or stops, and if the actual work-
ing point of pump is not the point specif ied in the contract,
adjust it with valve.
3. Operation
The pump must work within allowable scope, not the s-
cope with low discharge. If it runs long-term within such sc-
ope, machine load will increase greatly, making parts fail in
standing. However, instant working within this scope is all-
owable, for example, starting the machine.
4. Stop
Close the cock of pressure gauge and outlet gate valve
and open inlet valve. Ensure that machine set stops mildly
when you stop the motor. If the pump is out of work for long
time, close inlet valve, demount water pump, dry up the water
on the parts, and then apply antirust oil to processing surface
and keep it well. Start the pump for about five minutes every
month or three months to ensure the pump start at all time and
avoid deposit producing in the pump or pump inlet. Compl-
etely exhaust liquid in the pump if it is out of use for long time
and at low ambient temperature.
13661725188
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6 2
7
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10 ;
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14 , ,
15
1
2
3
4
5
6 2
7
8
9
1. Disassembly and assembly of structural diagram 1
1)Drain away liquid in the pump by closing inlet and outlet
valves and opening the drainage and deflation screw plugs;
2)Disassemble auxiliary piping;
3)Disassemble the clutch protector;
4)Disassemble fasteners between the clutches of both pump
nd motor;
5)Loosen mechanical gland;
6)Disassemble the coupling bolt and two taper pins on pump
cover and body. Remove pump cover and place it in safety
place;
7)Loosen the connecting bolts between bearing gland and be-
aring body, and remove the connecting bolts between bear-
ing body and pump body;
8)Withdraw the bearing bodies at two sides from the notch of
pump body, and sling up the rotor;
9)Haul down the clutch by wheel puller;
10)Disassemble bearing body of non-shaft-extension end, lock
nut, bearing body of shaft-extension end and axial circlip;
11)Haul down the bearings at two sides by wheel puller;
12)Disassemble the water deflector;
13)Disassemble mechanical seal carefully to avoid damage;
14)Disassemble the lock nut, axle sleeve and impeller. It is a-
llowed to knock on the impeller hub with hammer or wood
bar;
15)Assembly is opposite to the above procedure.
2. Disassembly and assembly of structural diagram 2
1)Drain away liquid in the pump by closing inlet and outlet
valves and opening the drainage and deflation screw plugs;
2)Disassemble auxiliary piping;
3)Disassemble the clutch protector;
4)Disassemble fasteners between the clut ches of both pump
and motor;
5)Loosen mechanical gland;
6)Disa ssemble the coupling bolt and two taper pins on the pump
cover and body. Remove the pump cover and place it in saf-
ety place;
7)Remove the connecting bolts between the bearing body and
pump body, and then sling up the rotor;
8)Haul down the clutch by wheel puller;
9)Disassemble the bearing body gland and lock nut;
13661725188
10
11
12 , ,
13 , ,
14
1
2
3
4
5
6
7
8
9
10
o o11 30 C 80 C
1/3 1/2
3
10)Pull and hold the bearing retaining cover with special wheel
puller, then haul down the complete bearing and be aring
body (be sure to keep in mind);
11)Hold on the bearing outer ring by through bolt, then eject
the bearing from the bearing body;
12)Disassemble mechanical seal carefully to avoid damage;
13)Disassemble the lock nut, axle sleeve and impeller. It is
allowed to knock on the impeller hub with hammer or w-
ood bar;
14)Assembly is opposite to the above procedure.
1)The machine shall be maintained and checked by qualified
personnel;
2)Pay attention to three-phase current value;
3)The pump must run stably;
4)The pump running dry is prohibited.
5)To prevent heating up of medium, the pump is not allowed
to run for long time when the outlet valve is closed;
6)Regularly check the connecting bolt. If looses, tighten ti-
mely.
7)Do not close the inlet valve when the pump is running;
8)Regularly check and start up emergency pump;
9)Check the elastic component on the clutch, and change it
if any abrasion occurs;
10)Ensure that the balancing water pipe is expedite. If it is
clogged up, the axial force will increase and bearing tem-
perature will rise.
11)If ambient temperature is up to 30 , the bearing temper-
ature shall not exceed 80 . It is advisable that the bearing
grease shall occupies 1/3 1/2 area of bearing body and
add the oil once every three months.
13661725188
As we are constantly endeavouring to improve the performance of our equipment.
The company reserves the right to make alteration from time to time and equipment differ from that detailed in this brochure.
All rights reserved.Pirate is forbidden.
2009 The first printing of the 2009 edition
Date of printing 10th.Dec.2009
3616-3618
201812
(021) 59138888
(021) 59136782
800 800-820-5009
Address:3616-3618 Cao'an Road, Jiangqiao Shanghai
P.C.: 201812
Switchboard: (021) 59138888
Fax: (021) 59136782
800 Free consultation Tel:800-820-5009
www.lcpumps.com
webmaster@lcpumps.com
13661725188
SLOW双级双吸泵
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