Alfalaval LKH User manual

3000-0200
ESE00698-EN29 2020-12
Original manual
Instruction Manual
LKH Centrifugal Pump

CONTACT CSI FOR MORE INFORMATION | CSIDESIGNS.COM | [email protected] | 417.831.1411

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 ..................................................................................... 6
2.3. Safety precautions ................................................................................ 7
3. Installation .............................................................................................. 9
3.1. Unpacking/delivery ............................................................................... 9
3.2. Installation ......................................................................................... 11
3.3. Pre-use check - pump without impeller screw ................................................. 17
3.4. Pre-use check - pump with impeller screw .................................................... 19
3.5. Recycling information ............................................................................. 20
4. Operation ............................................................................................... 21
4.1. Operation/Control ................................................................................. 21
4.2. Trouble shooting .................................................................................. 23
4.3. Recommended cleaning ......................................................................... 24
5. Maintenance ........................................................................................... 26
5.1. General maintenance ............................................................................. 26
5.2. Cleaning Procedure ............................................................................... 28
5.3. Dismantling of pump/shaft seals ................................................................ 29
5.4. Assembly of pump/single shaft seal ............................................................ 32
5.5. Assembly of pump/flushed shaft seal ........................................................... 35
5.6. Assembly of pump/double mechanical shaft seal ............................................. 38
5.7. Adjustment of shaft (LKH-5) ..................................................................... 41
5.8. Adjustment of shaft (LKH-10 to -90) ............................................................ 43
6. Technical data ......................................................................................... 45
6.1. Technical data ..................................................................................... 45
6.2. Relubrication intervals ............................................................................ 46
6.3. Torque Specifications ............................................................................. 46
6.4.Weight (kg) ........................................................................................ 46
6.5. Noise emission .................................................................................... 47
7. Parts list and service kits ............................................................................ 48
7.1. LKH-5 Sanitary version ........................................................................... 48
7.2. LKH-10, -15, -20, -25, -35, -40, -50, -60, -70, -75, -85, -90 sanitary version ............. 49
7.3. LKH - Product wetted parts ..................................................................... 50
7.4. LKH - Motor-dependent parts ................................................................... 52
7.5. LKH - Shaft seal .................................................................................. 54
3
CONTACT CSI FOR MORE INFORMATION | CSIDESIGNS.COM | [email protected] | 417.831.1411

1 EC Declaration of Conformity
Revision of Declaration of Conformity 2013-12-03
The Designated Company
Alfa Laval Kolding A/S
Company Name
Albuen 31, DK-6000 Kolding, Denmark
Address
[phone]
Phone No.
hereby declare that
Pump
Designation
LKH-5, LKH-10, LKH-15, LKH-20, LKH-25, LKH-35, LKH-40, LKH-45, LKH-50, LKH-60, LKH-70, LKH-85, LKH-90
Type
Serial number from AAB000000001 to AAB999999999
Serial number from 10.000 to 1.000.000
Serial number from 100700000001-100799999999
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
Hygienic Fluid Handling Lars Kruse Andersen
Title Name
Kolding 2020-01-23
Place Date Signature
4
CONTACT CSI FOR MORE INFORMATION | CSIDESIGNS.COM | [email protected] | 417.831.1411

2 Safety
Unsafe practices and other important information are emphasised in this manual.
Warnings are emphasised by means of special signs.
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Contact details for all countries are
continually updated on our website.
Please visit www.alfalaval.com to access the information directly.
5
CONTACT CSI FOR MORE INFORMATION | CSIDESIGNS.COM | [email protected] | 417.831.1411

2 Safety
Unsafe practices and other important information are emphasised in this manual.
Warnings are emphasised by means of special signs.
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2.2 Warning signs
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6
CONTACT CSI FOR MORE INFORMATION | CSIDESIGNS.COM | [email protected] | 417.831.1411

2 Safety
All warnings in the manual are summarised 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
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ensure that personnel must have experience with lifting operations.
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ensure the lifting point to be in line with center of gravity. Adjust lifting point if necessary.
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keep an eye on the load and stay clear during the lifting operation.
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ensure that the lifting equipment is suitable for the specific pump.
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use appropriate lifting equipment for heavy parts when relevant. Use lifting logs when applied.
To prevent unexpected start and contact with electrical live and moving parts.
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disconnect the power supply safely:
- The power supply disconnecting device must be disconnected (in off position) and locked.
- In case the pump is capable of being plugged into an electrical supply, removal of the plug is sufficient, provided
that the operator can check from any of the points to which he has access that the plug remains removed.
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refer to the motor instruction manual for installation and maintenance of the motor.
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touch the impeller through the inlet/outlet during start/stop as this can cause serious injury.
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read the technical data thoroughly. (See chapter 6 Technical data)
!
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remove the impeller before checking the direction of rotation.
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start the pump if the impeller is fitted and the pump casing is removed.
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start in the wrong direction of rotation with liquid in the pump.
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have the pump electrically connected by authorised personnel. (See the motor instruction)
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read the technical data thoroughly. (See chapter 6 Technical data)
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touch the pump or the pipelines when pumping hot liquids or when sterilising.
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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
e
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
A
l
l
w
w
a
a
y
y
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 the Alfa Laval pump selection program.
The Alfa Laval pump selection program can be acquired from your local Alfa Laval sales company.
M
M
a
a
i
i
n
n
t
t
e
e
n
n
a
a
n
n
c
c
e
e
:
:
A
A
l
l
w
w
a
a
y
y
s
s
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 pressurised.
A
A
l
l
w
w
a
a
y
y
s
s
use Alfa Laval genuine spare parts.
!
M
M
o
o
t
t
o
o
r
r
s
s
w
w
i
i
t
t
h
h
g
g
r
r
e
e
a
a
s
s
e
e
n
n
i
i
p
p
p
p
l
l
e
e
s
s
:
:
A
A
l
l
w
w
a
a
y
y
s
s
lubricate acording to motor manufactures recommended procedures.
A
A
l
l
w
w
a
a
y
y
s
s
locate and remove grease vent plugs, if provided, prior to adding grease.
A
A
l
l
w
w
a
a
y
y
s
s
check motor nameplate for grease type and lubrication intervals.
7
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2 Safety
All warnings in the manual are summarised on this page.
Pay special attention to the instructions below so that severe personal injury and/or damage to the pump are avoided.
T
T
r
r
a
a
n
n
s
s
p
p
o
o
r
r
t
t
a
a
t
t
i
i
o
o
n
n
:
:
T
T
r
r
a
a
n
n
s
s
p
p
o
o
r
r
t
t
a
a
t
t
i
i
o
o
n
n
o
o
f
f
t
t
h
h
e
e
p
p
u
u
m
m
p
p
o
o
r
r
t
t
h
h
e
e
p
p
u
u
m
m
p
p
u
u
n
n
i
i
t
t
:
:
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
l
w
w
a
a
y
y
s
s
drain the pump head and accessories of any liquid
A
A
l
l
w
w
a
a
y
y
s
s
ensure that no leakage of lubricants can occur
A
A
l
l
w
w
a
a
y
y
s
s
transport the pump in its upright position
A
A
l
l
w
w
a
a
y
y
s
s
ensure that the unit is securely fixed during transportation
A
A
l
l
w
w
a
a
y
y
s
s
use the original packaging or similar during transportation
A
A
l
l
w
w
a
a
y
y
s
s
use suitable transport device ie. forklift or pallet lifter
S
S
t
t
o
o
r
r
a
a
g
g
e
e
:
:
Ideally as a guide Alfa Laval would recommend:
- Store supplied product as supplied in original packaging
- Port opening should be protected against any ingress
- Bare steel (not stainless) should be lightly oiled/greased
- Store in a clean, dry place without direct sunlight or UV light
- Temperature range -5 to 40°C
- Relative humidity less than 60%
- No exposure to corrosive substances (also air contained)
8
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3 Installation
3.1 Unpacking/delivery
S
S
t
t
e
e
p
p
1
1
Always use a lifting crane when handling the pump (see technical
data).
C
C
A
A
U
U
T
T
I
I
O
O
N
N
Alfa Laval cannot be held responsible for incorrect unpacking.
W
W
A
A
R
R
N
N
I
I
N
N
G
G
:
:
Be aware that certain pump configurations can tilt, and therefore
cause injuries to feet or fingers. The pump should be supported
underneath the adaptor, when not installed in the process line.
C
C
h
h
e
e
c
c
k
k
t
t
h
h
e
e
d
d
e
e
l
l
i
i
v
v
e
e
r
r
y
y
f
f
o
o
r
r
:
:
1. Complete pump.
2. Delivery note.
3. Motor instructions.
S
S
t
t
e
e
p
p
2
2
Remove any packing materials from the inlet and the outlet.
Avoid damaging the inlet and the outlet.
Avoid damaging the connections for flushing liquid, if supplied.
*) Remove packing materials!
3000-0201
*)
*)
!
S
S
t
t
e
e
p
p
3
3
Inspect the pump for visible transport damage.
*) Remove packing materials!
Inspection!
3000-0201
*)
*)
!
9
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3 Installation
S
S
t
t
e
e
p
p
4
4
Always remove the shroud, if fitted, before lifting the pump.
Remove the shroud before lifting!
3000-0202
S
S
t
t
e
e
p
p
5
5
O
O
N
N
L
L
Y
Y
L
L
K
K
H
H
-
-
8
8
5
5
a
a
n
n
d
d
L
L
K
K
H
H
-
-
9
9
0
0
Do N
N
O
O
T
T
use eyebolt in casing to lift the pump. The eyebolt is
for casing removal only.
3000-0203
10
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3 Installation
Read the instructions carefully and pay special attention to the warnings! Always check the pump before operation.
- See pre-use check in section 3.3 Pre-use check - pump without impeller screw.
The large pump sizes are very heavy.
Alfa Laval therefore recommends the use of a lifting crane when handling the pump.
3.2 Installation
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 chaper 6 Technical data)
!
A
A
l
l
w
w
a
a
y
y
s
s
use a lifting crane when handling the pump.
A
A
l
l
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.
C
C
A
A
U
U
T
T
I
I
O
O
N
N
The pump does not prevent back flow when intenrionally or unintentionally stopped. If back flow can cause any hazardous
situations, precautions must be taken e.g. check the valve to be installed in the system preventing hazardous situations
from arising.
C
C
A
A
U
U
T
T
I
I
O
O
N
N
If the pump has been stored for longer period of time there is a risk that the seal faces may stick together and consequently
cause damage to the seal at start-up. Please ensure that the pump shaft can be rotated by hand before start-up.
W
W
A
A
R
R
N
N
I
I
N
N
G
G
:
:
Alfa Laval recommends the supply disconnecting device shall be in accordance with EN60204-1. Always disconnect the
supply disconnecting device safely after installation before continuing the installation.
S
S
t
t
e
e
p
p
2
2
Ensure at least 0.5 m (1.6 ft) clearance around the pump.
Ensure the floor/frame is able to support the weight of the pump.
See Technical data and other environment requirements in section
6.
Ensure the pump is supported by all four feet equally.
3000-0204
11
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3 Installation
Read the instructions carefully and pay special attention to the warnings! Always check the pump before operation.
- See pre-use check in section 3.3 Pre-use check - pump without impeller screw.
The large pump sizes are very heavy.
Alfa Laval therefore recommends the use of a lifting crane when handling the pump.
S
S
t
t
e
e
p
p
3
3
Check that the flow direction is correct.
O: Outlet
I: Inlet
3000-0205
I
O

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.
3. Remember seal rings. Few bends
3000-0206
Correct
S
S
t
t
e
e
p
p
5
5
A
A
v
v
o
o
i
i
d
d
s
s
t
t
r
r
e
e
s
s
s
s
o
o
n
n
t
t
h
h
e
e
p
p
u
u
m
m
p
p
.
.
P
P
i
i
p
p
i
i
n
n
g
g
s
s
y
y
s
s
t
t
e
e
m
m
m
m
u
u
s
s
t
t
b
b
e
e
s
s
e
e
l
l
f
f
-
-
s
s
u
u
p
p
p
p
o
o
r
r
t
t
e
e
d
d
.
.
P
P
a
a
y
y
s
s
p
p
e
e
c
c
i
i
a
a
l
l
a
a
t
t
t
t
e
e
n
n
t
t
i
i
o
o
n
n
t
t
o
o
:
:
- Vibrations.
- Thermal expansion of the tubes.
- Excessive welding.
- Overloading of the pipelines.
Example of piping system self-supported.
3000-0207
3000-0208
!
12
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3 Installation
Read the instructions carefully and pay special attention to the warnings! Always check the pump before operation.
- See pre-use check in section 3.3 Pre-use check - pump without impeller screw.
The large pump sizes are very heavy.
Alfa Laval therefore recommends the use of a lifting crane when handling the pump.
S
S
t
t
e
e
p
p
6
6
Ensure correct alignment of pump inlet and outlet with piping
system.
Alignment can be done by adjusting the pump legs.
3000-0209

3000-0210
Centre of inlet and outlet to be aligned with centre of piping system.
3000-0211
13
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3 Installation
Read the instructions carefully and pay special attention to the warnings! Always check the pump before operation.
- See pre-use check in section 3.3 Pre-use check - pump without impeller screw.
The large pump sizes are very heavy.
Alfa Laval therefore recommends the use of a lifting crane when handling the pump.
No gaps between connections on pump inlet and inlet pipe, and pump outlet and outlet pipe.
3000-0212
Angel between connections on pump inlet and inlet pipe, pump outlet and outlet pipe not allowed.
3000-0213
Ensure correct aligment of pump casing and pump backplate. Angle not allowed. Alignment can be done by adjusting the
pump legs.
3000-0215 

14
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3 Installation
Read the instructions carefully and pay special attention to the warnings! Always check the pump before operation.
- See pre-use check in section 3.3 Pre-use check - pump without impeller screw.
The large pump sizes are very heavy.
Alfa Laval therefore recommends the use of a lifting crane when handling the pump.
3000-0216
Ensure stud bolts in casing are aligned with holes in backplate.
3000-0215

3000-0216
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 recommends putting a drip tray underneath the slot to collect the leakage.
15
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3 Installation
Read the instructions carefully and pay special attention to the warnings! Always check the pump before operation.
- See pre-use check in section 3.3 Pre-use check - pump without impeller screw.
The large pump sizes are very heavy.
Alfa Laval therefore recommends the use of a lifting crane when handling the pump.
Always ensure the adaptor shield and motor fan guard are present and mounted correctly and allow no access to rotating
parts before installing and starting the pump.
3000-0221


16
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3 Installation
Read the instructions carefully and pay special attention to the warnings!
LKH-5 to -60 comes without impeller screw as standard but can be supplied with one.
Check the direction of rotation of the impeller before operation.
- See the indication label on the pump.
3.3 Pre-use check - pump without impeller screw
S
S
t
t
e
e
p
p
1
1
!
A
A
l
l
w
w
a
a
y
y
s
s
remove the impeller before checking the direction of
rotation.
!
N
N
e
e
v
v
e
e
r
r
start the pump if the impeller is fitted and the pump casing
is removed.
1.
A. LKH-5: Remove screws (56), spring washers (56a), clamps
(55+55a) and pump casing (29).
B. LKH-10 to -60: Remove cap nuts (24), washers (24a) and
pump casing (29).
2. Remove impeller (27) (see also instruction in section 5.4
Assembly of pump/single shaft seal).
3000-0217
S
S
t
t
e
e
p
p
2
2
W
W
a
a
r
r
n
n
i
i
n
n
g
g
:
:
Stay clear and ensure no one is near the shaft during
test of rotation.
1. Connect power supply.
2. Start and stop the motor momentarily.
3. Ensure that the direction of rotation of the stub shaft (7) is
anticlockwise as viewed from the inlet side.
4. Disconnect power supply safety.
3000-0218


Stub shaft
S
S
t
t
e
e
p
p
3
3
Fit and tighten impeller (27).
3000-0219

17
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3 Installation
Read the instructions carefully and pay special attention to the warnings!
LKH-5 to -60 comes without impeller screw as standard but can be supplied with one.
Check the direction of rotation of the impeller before operation.
- See the indication label on the pump.
S
S
t
t
e
e
p
p
4
4
1. Fit pump casing (29).
2.
A. LKH-5: Fit clamps (55+55a), spring washers (56a) and
tighten screws (56)
B. LKH-10 to -60: Fit washers (24a) and tighten cap nuts (24),
according to torque values in chapter 6 Technical data
3000-0220
18
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3 Installation
Read the instructions carefully and pay special attention to the warnings!
LKH-5 to -60 comes without impeller screw as standard but can be supplied with one.
Check the direction of rotation of the impeller before operation.
- See the indication label on the pump.
3.4 Pre-use check - pump with impeller screw
!
N
N
e
e
v
v
e
e
r
r
start in the wrong direction of rotation with liquid
in the pump.
1. Connect power supply
2. Start and stop the motor momentarily.
3. Ensure that the direction of rotation of the motor
fan is clockwise as viewed from the rear end of the
motor.
4. Disconnect power supply safely
3000-0221


View from rear end of
motor
19
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3 Installation
Read the instructions carefully and pay special attention to the warnings!
LKH-5 to -60 comes without impeller screw as standard but can be supplied with one.
Check the direction of rotation of the impeller before operation.
- See the indication label on the pump.
3.5 Recycling information
U
U
n
n
p
p
a
a
c
c
k
k
i
i
n
n
g
g
- Packing material consists of wood, plastics, cardboard boxes and in some cases metal straps
- Wood and cardboard boxes can be re-used, 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
M
M
a
a
i
i
n
n
t
t
e
e
n
n
a
a
n
n
c
c
e
e
- During maintenance, oil and wearing 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 wearing parts must be disposed of in accordance with local regulations
S
S
c
c
r
r
a
a
p
p
p
p
i
i
n
n
g
g
- Attheendofu
se, the equipment must be recycled according to relevant local regulations. Besides the equipment itself, any
hazardous residues from the process liquid must be taken into consideration and dealt with in a proper manner. When in
doubt, or in the absence of local regulations, please contact your local Alfa Laval sales company.
20
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