Alfa level LKH-5 User manual

Instruction Manual
LKH Centrifugal Pump
ESE00698-EN13 2009-12
Original manual

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 ....................................................................... 5
2. Safety .................................................................................................... 6
2.1. Important information ............................................................................. 6
2.2. Warning signs ..................................................................................... 6
2.3. Safety precautions ................................................................................ 7
3. Installation .............................................................................................. 8
3.1. Unpacking/Delivery ............................................................................... 8
3.2. Installation ......................................................................................... 9
3.3. Pre-use check - Pump without/with impeller screw ........................................... 10
4. Operation ............................................................................................... 11
4.1. Operation/Control ................................................................................. 11
4.2. Fault finding ....................................................................................... 13
4.3. Recommended cleaning ......................................................................... 14
5. Maintenance ........................................................................................... 15
5.1. General maintenance ............................................................................. 15
5.2. Dismantling of pump/shaft seals ................................................................ 17
5.3. Assembly of pump/single shaft seal ............................................................ 19
5.4. Assembly of pump/flushed shaft seal ........................................................... 21
5.5. Assembly of pump/double mechanical shaft seal ............................................. 23
5.6. Adjustment of shaft (LKH-5) ..................................................................... 25
5.7. Adjustment of shaft (LKH-10 to -90) ............................................................ 27
5.8. Cleaning Procedure ............................................................................... 29
6. Technical data ......................................................................................... 30
6.1. Technical data ..................................................................................... 30
6.2. Relubrication Intervals ............................................................................ 31
6.3. Addendum ......................................................................................... 32
7. Parts list and Service Kits ........................................................................... 33
7.1. LKH-5 Sanitary Version .......................................................................... 33
7.2. LKH-10, -15, -20, -25, -35, -40, -50, -60 Sanitary Version .................................. 34
7.3. LKH-70 - 90 Sanitary Version ................................................................... 35
7.4. LKH-5 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal .............. 36
7.5. LKH-10 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 38
7.6. LKH-15 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 40
7.7. LKH-20 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 42
7.8. LKH-25 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 44
7.9. LKH-35 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 46
7.10.LKH-40 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 48
7.11.LKH-45 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 50
7.12.LKH-50 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 52
7.13.LKH-60 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 54
7.14.LKH 5-60 Centrifugal Pumps, Shaft Seals ..................................................... 56
7.15.LKH-70 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 58
7.16.LKH-75 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 60
7.17.LKH-80 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 62
7.18.LKH-85 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 64
3

Tab le of contents
The information herein is correct at the time of issue but may be subject to change without prior notice
7.19.LKH-90 Centrifugal Pump Single, Flushed and Double Mechanical Shaft Seal ............ 66
7.20.LKH-70, LKH-75, LKH-80, LKH-85 and LKH-90 Centrifugal Pump, Shaft Seal ........... 68
4

1 EC Declaration of Conformity
The designated company
Alfa Laval
Company Name
Albuen 31, DK-6000 Kolding, Denmark
Address
[phone]
Phone No.
hereby declare that
Pump LKH
Denomination Type Year
is in conformity with the following directives with amendments:
- Low Voltage Directive 2006/95/EC
- EMC Directive 2004/108/EC
- Machinery Directive 2006/42/EC
The technical construction file is retained at the above address
Manager, Product Center Fluid Handling Bjarne Søndergaard
Title Name
Alfa Laval Kolding
Company Signature
Designation
5

2Safety
Unsafe practices and other important information are emphasized in this manual.
Warnings are emphasized by means of special signs.
Always read the manual before using the pump!
2.1 Important information
WARNING
Indicates that special procedures must be followed to avoid severe personal injury.
CAUTION
Indicates that special procedures must be followed to avoid damage to the pump.
NOTE
Indicates important information to simplify or clarify procedures.
2.2 Warning signs
General warning:
Dangerous electrical voltage:
Caustic agents:
Recycling information.
• Unpacking
- 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.
• Maintenance
- 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.
• Scrapping
- 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.
6

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
Installation:
Always
read the technical data thoroughly. (See chapter 6 Technical data)
Always
use a lifting crane when handling the pump.
Pump without impeller screw:
Always
remove the impeller before checking the direction of rotation.
Never
start the pump if the impeller is fitted and the pump casing is removed.
Pump with Impeller screw:
Never
startinthewrongdirectionofrotationwithliquidinthepump.
Always
have the pump electrically connected by authorized personnel.
Always
have the pump electrically connected by authorized personnel. (See the motor instruction)
Operation:
Always
read the technical data thoroughly. (See chapter 6 Technical data)
Never
run the pump when partially installed or not completely assembled
Necessary precautions must be taken if leakage occurs as this can lead to hazardous situations
Never
touch the pump or the pipelines when pumping hot liquids or when sterilising.
Never
run the pump with both the suction side and the pressure side blocked.
Always
handle lye and acid with great care.
Maintenance:
Always
read the technical data thoroughly. (See chapter 6 Technical data)
Never
service the pump when it is hot.
The pump and the pipelines must n
never
be pressurised when the pump is serviced.
Motors with grease nipples:
Remember lubrication according to information plate/label on the motor.
Always
disconnect the power supply when servicing the pump.
Transportation:
Transportation of the pump or the pump unit:
Never
lift or elevate in any way other than described in this manual
Always
drain the pump head and accessories of any liquid
Always
ensure that no leakage of lubricants can occur
Always
transport the pump in it’s upright position
Always
ensure that the unit is securely fixed during transportation
Always
use original packaging or similar during transportation
7

3 Installation
The instruction manual is part of the delivery. Study the instructions carefully.
The large pump sizes are very heavy.
Alfa Laval therefore recommends the use of a lifting crane when handling the pump.
3.1 Unpacking/Delivery
Step 1
Always use a lifting crane when handling the pump (see technical
data).
CAUTION
Alfa Laval cannot be held responsible for incorrect unpacking.
Check the delivery for:
1. Complete pump.
2. Delivery note.
3. Motor instructions.
Step 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.
TD 200-120_1
Remove
packing
materials!
Caution!
Step 3
Inspect the pump for visible transport damages.
Inspection!
TD 200-120_1
Step 4
Alwaysremovetheshroud,iffitted,beforeliftingthepump.
Remove the shroud before lifting!
Step 5
ONLY LKH-85 and LKH-90
Do N
NOT
use eyebolt in casing to lift the pump. The eyebolt is
only for casing removal.
8

3 Installation
Study 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/with 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
Step 1
Always
read the technical data thoroughly.
(See chaper 6 Technical data)
Always
use a lifting crane when handling the pump.
(See chaper 6 Technical data)
Always
have the pump electrically connected by
authorized personnel.
(see the motor instructions).
CAUTION
Alfa Laval cannot be held responsible for incorrect
installation.
Step 2
Ensure at least 0.5 m (1.6 ft) clearance around the pump.
Step 3
Check that the flow direction is correct.
O: Outlet
I: Inlet Correct!
S
Step 4
1. Ensure that the pipelines are routed correctly.
2. Ensure that the connections are tight.
Remember seal rings!
Few bends
Correct!
S
Step 5
Avoid stressing the pump.
Pay special attention to:
-Vibrations.
- Thermal expansion of the tubes.
- Excessive welding.
- Overloading of the pipelines.
9

3 Installation
Study the instructions carefully and pay special attention to the warnings!
LKH-5 to -60 is 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/with impeller screw
Step 1
Always
remove the impeller before checking the direction of
rotation.
Never
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 -90: Remove cap nuts (24), washers (24a) and
pump casing (29).
2. Remove impeller (27) (see also instruction in section 5.3
Assembly of pump/single shaft seal).
S
Step 2
1. Start and stop the motor momentarily.
2. Ensure that the direction of rotation of the stub shaft (7) is
anticlockwise as viewed from the inlet side.
See the indication label!
Correct!
Stub shaft
Step 3
Fit and tighten impeller (27).
S
Step 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 -90: Fit washers (24a) and tighten cap nuts (24),
according to torque values in chapter 6.3 Addendum
Step 1
Pump with impeller screw
Never
start in the wrong direction of rotation with liquid in the
pump.
1. Start and stop the motor momentarily.
2. Ensure that the direction of rotation of the motor fan is
clockwise as viewed from the rear end of the motor.
See the indication label!
Correct
View from rear end of
motor
10