Alfa level CSI LKH-112 User manual

3003-0004
100002859-EN7 2020-08
Original manual
Instruction Manual
LKH Multi-Stage Pump


Table of contents
The information herein is correct at the time of issue but may be subject to change without prior notice
1. EC Declaration of Conformity ....................................................................... 4
2. Safety .................................................................................................... 5
2.1. Important information ............................................................................. 5
2.2. Warning signs ..................................................................................... 5
2.3. Safety precautions ................................................................................ 6
3. Installation .............................................................................................. 7
3.1. Unpacking/delivery ............................................................................... 7
3.2. Installation/Pre-use Check ....................................................................... 8
3.3. Recycling information ............................................................................. 10
4. Operation ............................................................................................... 11
4.1. Operation/Control ................................................................................. 11
4.2. Trouble shooting .................................................................................. 13
4.3. Recommended cleaning ......................................................................... 14
5. Maintenance ........................................................................................... 15
5.1. General maintenance ............................................................................. 15
5.2. Cleaning Procedure ............................................................................... 16
5.3. Dismantling of pump/shaft seals ................................................................ 17
5.4. Assembly of Pump/Assembly of Shaft Seal - LKH-110 ....................................... 21
5.5. Assembly of Pump/Assembly of Shaft Seal - LKH-120/P .................................... 27
6. Technical data ......................................................................................... 32
6.1. Technical data ..................................................................................... 32
6.2. Relubrication intervals ............................................................................ 33
6.3. Torque Specifications ............................................................................. 34
6.4. Weight (kg) ........................................................................................ 35
6.5. Noise emission .................................................................................... 36
7. Parts list and service kits ............................................................................ 37
7.2. LKH Multi-Stage - Wet end ...................................................................... 38
7.3. LKH Multi-Stage - Motor dependent parts ..................................................... 40
7.4. LKH Multi-Stage - Shaft seal and Service kits ................................................. 42
3

1 EC Declaration of Conformity
Revision of Declaration of Conformity 2009-12-29
The Designated Company
Alfa Laval Kolding A/S
Company Name
Albuen 31, DK-6000 Kolding, Denmark
Address
+45 79 32 22 00
Phone No.
hereby declare that
Pump
Designation
LKH-112, LKH-112/P, LKH-113, LKH-113/P, LKH-114, LKH-114/P, LKH-122/P, LKH-123/P, LKH-124/P
Type
From serial number 10.000 to 1.000.000
is in conformity with the following directive with amendments:
- Machinery Directive 2006/42/EC
The person authorised to compile the technical file is the signer of this document
Global Product Quality Manager
Pump, Valves, Fittings and Tank Equipment Lars Kruse Andersen
Title Name
Kolding 2013-12-03
Place Date Signature
4

2 Safety
Unsafe practices and other important information are emphasized in this manual.
Warnings are emphasized by means of special signs.
A
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!
!
2.1 Important information
W
W
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R
R
N
N
I
I
N
N
G
G
Indicates that special procedures must be followed to avoid serious personal injury.
C
C
A
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T
I
I
O
O
N
N
Indicates that special procedures must be followed to avoid damage to the pump.
N
N
O
O
T
T
E
E
Indicates important information to simplify or clarify procedures.
2.2 Warning signs
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:
:
5

2 Safety
All warnings in the manual are summarized on this page.
Pay special attention to the instructions below so that severe personal injury and/or damage to the pump are avoided.
2.3 Safety precautions
I
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read the technical data thoroughly. (See chapter 6 Technical data)
A
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L
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a
y
y
s
s
use a lifting crane when handling the pump
A
A
l
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a
y
y
s
s
use a lifting crane when handling the pump.
N
N
e
e
v
v
e
e
r
r
start in the wrong direction of rotation with liquid in the pump.
!
A
A
l
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w
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a
y
y
s
s
have the pump electrically connected by authorized personnel. (See the motor instruction)
O
O
p
p
e
e
r
r
a
a
t
t
i
i
o
o
n
n
:
:
A
A
l
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a
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y
s
s
read the technical data thoroughly. (See chapter 6 Technical data)
N
N
e
e
v
v
e
e
r
r
touch the pump or the pipelines when pumping hot liquids or when sterilising.
N
N
e
e
v
v
e
e
r
r
run the pump with both the suction side and the pressure side blocked.
N
N
e
e
v
v
e
e
r
r
run the pump when partially installed or not completely assembled.
!
N
N
e
e
c
c
e
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s
s
s
s
a
a
r
r
y
y
precautions must be taken if leakage occurs as this can lead to hazardous situations.
A
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a
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s
s
handle lye and acid with great care.
N
N
e
e
v
v
e
e
r
r
use the pump for products not mentioned in Alfa Laval pump selection program.
Alfa Laval pump selection program can be acquired from your local Alfa Laval sales company.
M
M
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c
c
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:
:
A
A
l
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a
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read the technical data thoroughly. (See chapter 6 Technical data)
N
N
e
e
v
v
e
e
r
r
service the pump when it is hot.
N
N
e
e
v
v
e
e
r
r
service the pump if pressurized.
!
M
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p
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p
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l
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:
:
Remember lubrication according to information plate/label on the motor.
A
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s
disconnect the power supply when servicing the pump.
A
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use Alfa Laval genuine spare parts.
T
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p
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:
:
N
N
e
e
v
v
e
e
r
r
lift or elevate in any way other than described in this manual
A
A
l
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a
a
y
y
s
s
drain the pump head and accessories of any liquid
A
A
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y
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s
ensure that no leakage of lubricants can occur
A
A
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transport the pump in it’s upright position
A
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ensure that the unit is securely fixed during transportation
A
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use original packaging or similar during transportation
6

3 Installation
The LKH-110 and -120P pump is highly efficient and econominal centrifugal pump, which meets the requirements of sanitary
and gently product treatment and chemical resistance. LKH-110 and the LKH-120P is avaliable in the following sizes, LKH-112,
-113, -114 and LKH122/P, -123/P, -124/P. The instruction manual is part of the delivery. Study the instructions carefully. The
large pump sizes are very heavy. ALfa Laval recommends the use of a lifting crane when handling the pump.
3.1 Unpacking/delivery
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1
1
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use a lifting crane when handling the pump
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I
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O
N
N
Alfa Laval cannot be held responsible for incorrect unpacking.
W
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A
R
R
N
N
I
I
N
N
G
G
:
:
Be aware that certain pump configurations can tilt, and thereby
cause injuries to feet or fingers. The pump should be supported
underneath the adaptor, when not installed in the process line.
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:
:
1. Complete pump.
2. Delivery note.
3. Instruction manual.
4. Motor instructions.
5. Test certificate, IF ORDERED!
S
S
t
t
e
e
p
p
2
2
Remove possible packing materials from the inlet and the outlet.
Avoid damaging the inlet and the outlet.
Avoid damaging the connections for flushing liquid, if supplied.
3003-0005
Remove
packing
materials!
S
S
t
t
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e
p
p
3
3
Inspect the pump for visible transport damages.
Inspection!
3003-0006
S
S
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e
p
p
4
4
Always remove the shroud, if fitted, before lifting the pump.
Remove the shroud before lifting!
3003-0007
7

3 Installation
Study the instructions carefully and pay special attention to the warnings!
The direction of rotation of the impeller can be checked by observing the direction of rotation of the motor fan. - See
the indication label on the pump.
3.2 Installation/Pre-use Check
S
S
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t
e
e
p
p
1
1
A
A
l
l
w
w
a
a
y
y
s
s
read the technical data thoroughly. (See technical data on page 32)
N
N
e
e
v
v
e
e
r
r
start in the wrong direction of rotation with liquid in the pump. (See Pre-use check on page 9)
A
A
l
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w
w
a
a
y
y
s
s
have the pump electrically connected by authorised personnel. (See the motor instructions).
C
C
A
A
U
U
T
T
I
I
O
O
N
N
Alfa Laval cannot be held responsible for incorrect installation.
W
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A
R
R
N
N
I
I
N
N
G
G
:
:
Alfa Laval recommend the installation of lockable repair breaker. If the repair breaker is to be used as an emergency stop
the colors of the repair breaker must be red and yellow.
C
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a
a
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i
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n
n
:
:
The pump does not prevent back flow when intentionally or unintentionally stopped. If back flow can cause any hazardous
situations precautions must be taken e.g. check valve to be installed in the system preventing above described.
S
S
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e
p
p
2
2
Ensure at least 0.5 m (1.6 ft) clearance around the pump.
3003-0008
S
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e
p
p
3
3
Check that the flow direction is correct.
O: Outlet
I: Inlet
I
O
3003-0009
Correct!
8

3 Installation
Study the instructions carefully and pay special attention to the warnings!
The direction of rotation of the impeller can be checked by observing the direction of rotation of the motor fan. - See
the indication label on the pump.
S
S
t
t
e
e
p
p
4
4
1. Ensure that the pipelines are routed correctly.
2. Ensure that the connections are tight.
Remember seal rings!
3003-0010
Correct! Few bends
S
S
t
t
e
e
p
p
5
5
Avoid stressing the pump.
Pay special attention to:
- Vibrations.
- Thermal expansion of the tubes.
- Excessive welding.
- Overloading of the pipelines.
3003-0011
!
Risk of damage!
S
S
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p
p
6
6
P
P
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r
e
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-
-
u
u
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c
c
h
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k
k
:
:
1. Start and stop the motor momentarily.
2. Ensure that the direction of rotation of the motor fan is
clockwise as viewed from the back of the motor.
Correct rotation direction!
See the indication label!
Rear view
of motor
3003-0012
N
N
o
o
t
t
e
e
In case of shaft seal leakage the media will drip from the slot in the bottom of the adaptor. In case of shaft seal leakage Alfa
Laval recommend to put a drip tray underneath the slot for collecting the leakage.
9

3 Installation
3.3 Recycling information
•
•
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- Packing material consists of wood, plastics, cardboard boxes and in some cases metal straps.
- Wood and cardboard boxes can be reused, recycled or used for energy recovery.
- Plastics should be recycled or burnt at a licensed waste incineration plant.
- Metal straps should be sent for material recycling.
•
•
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- During maintenance oil and wear parts in the machine are replaced.
- All metal parts should be sent for material recycling.
- Worn out or defective electronic parts should be sent to a licensed handler for material recycling.
- Oil and all non metal wear parts must be taken care of in agreement with local regulations.
•
•
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- At end of use, the equipment shall be recycled according to relevant, local regulations. Beside the equipment itself, any
hazardous residues from the process liquid must be considered and dealt with in a proper manner. When in doubt, or in the
absence of local regulations, please contact the local Alfa Laval sales company.
10

4 Operation
Study the instructions carefully and pay special attention to the warnings!
4.1 Operation/Control
S
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p
p
1
1
A
A
l
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w
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a
a
y
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s
s
read the technical data thoroughly. See technical data on page 32
C
C
A
A
U
U
T
T
I
I
O
O
N
N
Alfa Laval cannot be held responsible for incorrect operation/control.
N
N
e
e
v
v
e
e
r
r
touch the pump or the pipelines when pumping hot liquids or when sterilising.
S
S
t
t
e
e
p
p
2
2
N
N
e
e
v
v
e
e
r
r
touch the pump or the pipelines when pumping hot liquids
or when sterilising.
D
D
a
a
n
n
g
g
e
e
r
r
o
o
f
f
b
b
u
u
r
r
n
n
s
s
!
!
3003-0013
S
S
t
t
e
e
p
p
3
3
N
N
e
e
v
v
e
e
r
r
run the pump with both the suction side and the pressure
side blocked.
D
D
a
a
n
n
g
g
e
e
r
r
o
o
f
f
e
e
x
x
p
p
l
l
o
o
s
s
i
i
o
o
n
n
!
!
3003-0014
!
!
See warning label
on pump.
11

4 Operation
Study the instructions carefully and pay special attention to the warnings!
S
S
t
t
e
e
p
p
4
4
C
C
A
A
U
U
T
T
I
I
O
O
N
N
The shaft seal must not run dry.
C
C
A
A
U
U
T
T
I
I
O
O
N
N
N
N
e
e
v
v
e
e
r
r
throttle the inlet side.
D
D
o
o
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o
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w
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r
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u
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d
d
r
r
y
y
3003-0015
S
S
t
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p
p
5
5
F
F
l
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s
s
h
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d
d
s
s
h
h
a
a
f
f
t
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s
e
e
a
a
l
l
:
:
1. Connect the inlet of the flushing liquid correctly.
2. Regulate the water supply correctly.
3. Observe the steam data.
O: Outlet
I: Inlet
Correct!
I
O
3003-0016
Tmax = 100°C
Pmax =1bar
(flush seal)
S
S
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t
e
e
p
p
6
6
C
C
o
o
n
n
t
t
r
r
o
o
l
l
:
:
Reduce the capacity and the power consumption by means of:
- Throttling the pressure side of the pump.
- Reducing the impeller diameter.
- Reducing the speed of the motor.
Throttling!
3003-0017
12

4 Operation
Pay attention to possible faults.
Study the instructions carefully.
4.2 Trouble shooting
N
N
O
O
T
T
E
E
!
!
Study the maintenance instructions carefully before replacing worn parts. - See section 5.1 General maintenance on page 15
P
P
r
r
o
o
b
b
l
l
e
e
m
m
C
C
a
a
u
u
s
s
e
e
/
/
r
r
e
e
s
s
u
u
l
l
t
t
R
R
e
e
m
m
e
e
d
d
y
y
Overloaded motor - Pumping of viscous liquids - Larger motor or smaller impeller
- Pumping of liquids with high density
- Low outlet pressure (counter pressure) - Higher counter pressure (throttling)
- Lamination of precipitates from the
liquid
- Frequent cleaning
- Damage - Low inlet pressure - Increase the inlet pressure
- Pressure reduction (sometimes to
zero)
- High liquid temperature - Reduce the liquid temperature
- Increasing of the noise level - Reduce the pressure drop before the
pump
Leaking shaft seal - Dry run Replace:
All wearing parts
- Incorrect rubber grade If necessary:
- Change rubber grade
- Abrasive particles in the liquid - Select stationary and rotating seal ring
in Silicon Carbide/Silicon Carbide
Leaking O-ring seals Incorrect rubber grade Change rubber grade
13

4 Operation
The pump is designed for cleaning in place (CIP). CIP = Cleaning In Place.
Study the instructions carefully and pay special attention to the warnings!
NaOH = Caustic Soda.
HNO3= Nitric acid.
4.3 Recommended cleaning
S
S
t
t
e
e
p
p
1
1
A
A
l
l
w
w
a
a
y
y
s
s
handle lye and acid with great care.
C
C
a
a
u
u
s
s
t
t
i
i
c
c
d
d
a
a
n
n
g
g
e
e
r
r
!
!
Always use rubber gloves! Always use protective
goggles!
S
S
t
t
e
e
p
p
2
2
N
N
e
e
v
v
e
e
r
r
touch the pump or the pipelines when sterilizing.
D
D
a
a
n
n
g
g
e
e
r
r
o
o
f
f
b
b
u
u
r
r
n
n
s
s
!
!
3003-0013
S
S
t
t
e
e
p
p
3
3
E
E
x
x
a
a
m
m
p
p
l
l
e
e
s
s
o
o
f
f
c
c
l
l
e
e
a
a
n
n
i
i
n
n
g
g
a
a
g
g
e
e
n
n
t
t
s
s
:
:
Use clean water, free from chlorides.
1. 1% by weight NaOH at 70°C (158°F).
1 kg (2.2 lb) +100 l (26.4 gal) = Cleaning agent.
NaOH water
2.2 l (0.6 gal) +100 l (26.4 gal) = Cleaning agent.
33% NaOH water
2. 0.5% by weight HNO3at 70°C (158°F).
0.7 l (0.2 gal) +100 l (26.4 gal) = Cleaning agent.
53% HNO3water
1. Avoid excessive concentration
of the cleaning agent
⇒Dose gradually!
2. Adjust the cleaning flow to the
process.
Sterilization of milk/viscous
liquids
⇒Increase the cleaning flow!
S
S
t
t
e
e
p
p
4
4
A
A
l
l
w
w
a
a
y
y
s
s
rinse well with clean water after using a cleaning agent.
N
N
O
O
T
T
E
E
The cleaning agents must be stored/disposed of in accordance
with current regulations/directives.
A
A
l
l
w
w
a
a
y
y
s
s
r
r
i
i
n
n
s
s
e
e
!
!
3013-0153
Water Cleaning agent
14

5 Maintenance
Maintain the pump carefully. Study the instructions carefully and pay special attention to the warnings!
Always keep spare shaft seals and rubber seals in stock.
See separate motor instructions.
5.1 General maintenance
S
S
t
t
e
e
p
p
1
1
A
A
l
l
w
w
a
a
y
y
s
s
read the technical data thoroughly. (See technical data on page 32)
A
A
l
l
w
w
a
a
y
y
s
s
disconnect the power supply when servicing the pump.
N
N
O
O
T
T
E
E
All scrap must be stored/discharged in accordance with current rules/directives.
S
S
t
t
e
e
p
p
2
2
N
N
e
e
v
v
e
e
r
r
service the pump when it is hot.
N
N
e
e
v
v
e
e
r
r
service the pump with pump and pipelines under pressure.
Atmospherie pressure required!
D
D
a
a
n
n
g
g
e
e
r
r
o
o
f
f
b
b
u
u
r
r
n
n
s
s
!
!
3003-0013
S
S
t
t
e
e
p
p
3
3
R
R
e
e
c
c
o
o
m
m
m
m
e
e
n
n
d
d
e
e
d
d
s
s
p
p
a
a
r
r
e
e
p
p
a
a
r
r
t
t
s
s
:
:
Order Service Kits from Service kits list (see page 7 Parts list and service kits).
O
O
r
r
d
d
e
e
r
r
i
i
n
n
g
g
s
s
p
p
a
a
r
r
e
e
p
p
a
a
r
r
t
t
s
s
Contact your local Alfa Laval sales company.
15

5 Maintenance
Maintain the pump carefully. Study the instructions carefully and pay special attention to the warnings!
Always keep spare shaft seals and rubber seals in stock.
See separate motor instructions.
S
S
h
h
a
a
f
f
t
t
s
s
e
e
a
a
l
l
R
R
u
u
b
b
b
b
e
e
r
r
s
s
e
e
a
a
l
l
s
s
M
M
o
o
t
t
o
o
r
r
b
b
e
e
a
a
r
r
i
i
n
n
g
g
s
s
Preventive maintenance R
R
e
e
p
p
l
l
a
a
c
c
e
e
a
a
f
f
t
t
e
e
r
r
1
1
2
2
m
m
o
o
n
n
t
t
h
h
s
s
:
:
(one-shift)
- Stationary and rotating seal
ring
- Quad-/O-rings
Replace when replacing the
shaft seal
Maintenance after leakage
(leakage normally starts slowly)
R
R
e
e
p
p
l
l
a
a
c
c
e
e
a
a
t
t
t
t
h
h
e
e
e
e
n
n
d
d
o
o
f
f
t
t
h
h
e
e
d
d
a
a
y
y
:
:
- Stationary and rotating seal
ring
- Quad-/O-rings
Replace when replacing the
shaft seal
Planned maintenance - Regular inspection for
leakage and smooth
operation
- Keep a record of the pump
- Use the statistics for
planning of inspections
R
R
e
e
p
p
l
l
a
a
c
c
e
e
a
a
f
f
t
t
e
e
r
r
l
l
e
e
a
a
k
k
a
a
g
g
e
e
:
:
- Stationary and rotating seal
ring
- Quad-/O-rings
Replace when replacing the
shaft seal
Yearly inspection is
recommended
- Replace complete bearing
if worn
- Ensure that the bearing is
axially locked (See motor
instructions)
Lubrication B
B
e
e
f
f
o
o
r
r
e
e
f
f
i
i
t
t
t
t
i
i
n
n
g
g
Lubricate the O-rings with
silicone grease or silicone oil
B
B
e
e
f
f
o
o
r
r
e
e
f
f
i
i
t
t
t
t
i
i
n
n
g
g
Silicone grease or silicone oil
See “Relubrication Intervals”,
section 6.2 Relubrication
intervals on page 33
5.2 Cleaning Procedure
C
C
l
l
e
e
a
a
n
n
i
i
n
n
g
g
P
P
r
r
o
o
c
c
e
e
d
d
u
u
r
r
e
e
f
f
o
o
r
r
S
S
o
o
i
i
l
l
e
e
d
d
I
I
m
m
p
p
e
e
l
l
l
l
e
e
r
r
S
S
c
c
r
r
e
e
w
w
T
T
a
a
p
p
p
p
e
e
d
d
H
H
o
o
l
l
e
e
:
:
1. Remove stub shaft (7) per section 4 of Service manual.
2. Submerge and soak Stub Shaft for 5 minutes in COP tank with 2% caustic wash
3. Scrub the blind tapped impeller screw hole vigorously by plunging a clean 1/2” diameter sanitary bristle pipe brush in and out
of the hole for two minutes while submerged.
4. Soak Stub Shaft (7) in acid sanitizer for 5 minutes, then scrub blind tapped hole as described in step 3 above.
5. Rinse well with clean water and blow-dry blind tapped hole with clean air.
6. Swab test the inside of the tapped hole to determine cleanliness.
7. Should the swab test fail, repeat steps 2 thru 6 above until swab test is passed.
Should swab testing continue to fail, or time is of the essence, install a new (spare) Stub Shaft (7).
16

5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section.
Handle scrap correctly.
: Relates to the shaft seal.
5.3 Dismantling of pump/shaft seals
S
S
t
t
e
e
p
p
1
1
Remove the cap nuts (29), washer (30), pump cover (49) and
O-ring (32).
3003-0018_1
S
S
t
t
e
e
p
p
2
2
F
F
l
l
u
u
s
s
h
h
e
e
d
d
s
s
h
h
a
a
f
f
t
t
s
s
e
e
a
a
l
l
:
:
Unscrew tubes (25) using a spanner..
3003-0019
S
S
t
t
e
e
p
p
3
3
Remove screw (16) and adaptor guard (17).
3003-0020
17

5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section.
Handle scrap correctly.
: Relates to the shaft seal.
S
S
t
t
e
e
p
p
4
4
Remove impeller screw (47) O-ring (41) and impeller (45).
Counterhold with a screwdriver!
3003-0021
S
S
t
t
e
e
p
p
5
5
1. Remove intermediate casing (46) (3 or 4 stage) and/or pump
casing (42).
2. Remove impeller (45) and O-rings (41) in between the stages.
3003-0022
S
S
t
t
e
e
p
p
6
6
Remove guide vanes (44) and O-ring (43) from intermediate casing
(3 or 4 stage) and /or pump casing (42).
3003-0023
S
S
t
t
e
e
p
p
7
7
Remove impeller (40) and the rotating part of the shaft seal, and
remove O-ring (41) from impeller.
3003-0024
18

5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section.
Handle scrap correctly.
: Relates to the shaft seal.
S
S
t
t
e
e
p
p
8
8
Remove space ring (35) and the rotating part of the seal from the
impeller.
3003-0063
S
S
t
t
e
e
p
p
9
9
Remove rotating seal ring (36) the quad rings/O-rings (37, 39) and
the supporting (38a) from rotating seal housing (38).
3003-0064
36
37
38a
38
39
S
S
t
t
e
e
p
p
1
1
0
0
1. Remove the nuts (20), the washers (21) and back plate (31).
2. Remove O-ring (32) from the back plate.
3003-0027
S
S
t
t
e
e
p
p
1
1
1
1
1. Remove stationary seal ring (34).
2. Remove O-ring (33) from the stationary seal ring.
3003-0028
19

5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section.
Handle scrap correctly.
: Relates to the shaft seal.
S
S
t
t
e
e
p
p
1
1
2
2
F
F
l
l
u
u
s
s
h
h
e
e
d
d
s
s
h
h
a
a
f
f
t
t
s
s
e
e
a
a
l
l
:
:
1. Remove the screws (24) and seal housing (26).
2. Remove lip seal (28) and O-ring (27) from the seal housing.
3. Remove seal ring (23) from stub shaft (11).
4. Remove O-ring (22) from the seal ring.
3003-0029
S
S
t
t
e
e
p
p
1
1
3
3
1. Remove scroud (2).
2. Remove nuts (7), washers (8), screws (19) and adaptor (18).
3003-0030
S
S
t
t
e
e
p
p
1
1
4
4
1. Loosen the screws (15).
2. Remove stub shaft (11) and the compression rings (9,13).
3003-0031
S
S
t
t
e
e
p
p
1
1
5
5
Remove the screws (15), washers (15a) and the compression
rings (9,13).
3103-0032
20
This manual suits for next models
8
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