Alfalaval MR-185S User manual

3100-0005
ESE00675-EN5 2017-03
Original manual
Instruction Manual
MR-166S, -185S, -200S Liquid-Ring 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 - MR-166S .......................................................... 8
3.3. Installation/Pre-use check - MR-185S and MR-200S ......................................... 10
3.4. Recycling information ............................................................................. 11
4. Operation ............................................................................................... 12
4.1. Operation/Control ................................................................................. 12
4.2. Trouble shooting and remedy .................................................................... 13
4.3. Recommended cleaning ......................................................................... 14
5. Maintenance ........................................................................................... 15
5.1. General maintenance ............................................................................. 15
5.2. Dismantling of pump - MR-166S ................................................................ 17
5.3. Dismantling of pump - MR-185S and MR-200S ............................................... 20
5.4. Assambly of pump - MR-166S ................................................................... 23
5.5. Assembly of pump - MR-185S and MR-200S ................................................. 26
6. Technical data ......................................................................................... 29
6.1. Technical data ..................................................................................... 29
6.2. Torque specifications ............................................................................. 30
6.3. Weight (kg) ........................................................................................ 30
6.4. Noise emission .................................................................................... 31
7. Parts list and service kits ............................................................................ 32
7.1. Drawings MR 166 ................................................................................ 32
7.2. Drawings MR 185/200 ........................................................................... 33
7.3. MR - Wet end ..................................................................................... 34
7.4. MR - Motor dependent parts .................................................................... 36
7.5. MR - Shaft seal ................................................................................... 38
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
[phone]
Phone No.
hereby declare that
Pump
Designation
MR-166S, MR-185S, MR-200S
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 2016-02-01
Place Date Signature
4

2 Safety
Unsafe practices and other important information are emphasised in this manual.
Warnings are emphasised by means of special signs. All warnings in this manual are summarised on this page.
Pay special attention to the instructions below so that serious personal injury or damage to the pump are avoided.
2.1 Important information
Always read the manual before using the pump!
WARNING
Indicates that special procedures must be followed to avoid serious 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:
5

2 Safety
Unsafe practices and other important information are emphasised in this manual.
Warnings are emphasised by means of special signs. All warnings in this manual are summarised on this page.
Pay special attention to the instructions below so that serious personal injury or damage to the pump are avoided.
2.3 Safety precautions
Installation:
Always read the technical data thoroughly. (See chapter 6 Technical data). !
Never stick your fingers or any tool through the adaptor or the drain hole in the pump casing when the pump is running.
Never test the direction of rotation with liquid in the pump.
Always have the pump electrically connected by authorised personnel. (See the motor instruction)
Always disconnect the power supply when servicing the pump.
Operation:
Always read the technical data thoroughly. (See chapter 6 Technical data). !
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.
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.
Always handle lye and acid with great care.
Never use the pump for products not mentioned in Alfa Laval pump selection program.
The Alfa Laval pump selection program can be acquired from your local Alfa Laval sales company.
Maintenance:
Always read the technical data thoroughly. (See chapter 6 Technical data). !
Never service the pump when it is hot.
Never service the pump if pressurised.
Motors with grease nipples:
Remember lubrication according to the information plate/label on the motor.
Always disconnect the power supply when servicing the pump.
Alwaysuse Alfa Laval genuine spare parts.
Transportation:
Transportation of the pump or the pump unit:
Never lift or elevate in any way other than as 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 its upright position
Always ensure that the unit is securely fixed during transportation
Always use the original packaging or similar during transportation
6

3 Installation
3.1 Unpacking/delivery
Step 1
CAUTION
Alfa Laval cannot be held responsible for incorrect unpacking.
Inspect the pump for visible transport damage.
Check the delivery for:
1. Complete pump, MR-166S, MR-185S or MR-200S.
2. Delivery note.
3. Motor instructions.
Step 2
Clean the inlet and the outlet of all possible packing materials.
3100-0006
Step 3
Avoid damaging the inlet and the outlet.
3100-0006
Step 4
Always remove the shroud, if fitted, before lifting the pump.
3100-0007
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 - MR-166S
Step 1
Always read the technical data carefully.
See chaper 6 Technical data
CAUTION
Alfa Laval cannot be held responsible for incorrect installation.
Never stick your fingers or any tool through the adaptor or the
drain hole in the pump casing when the pump is running.
WARNING:
Alfa Laval recommends the installation of a lockable
repair breaker. If the repair breaker is to be used as
an emergency stop, the colours of the repair breaker
must be red and yellow.
CAUTION
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 the problems described above.
NOTE!
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 placing a drip
tray underneath the slot to collect the leakage.
Step 2
Ensure a clearance of at least 0.5 m around the pump.
3100-0008
Step 3
Ensure that the flow direction is correct.
3100-0009
Step 4
1. Ensure that the pipelines are correctly routed.
2. Ensure that connections are tight.
Min. 1m
Few bends! Correct!
3100-0010

Remember seal rings!
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.
Step 5
Avoid stresses to the pump
Pay special attention to:
-Vibrations.
- Thermal expansion of the tubes.
- Excessive welding.
- Overloading of the pipelines.
!
3100-0011
Risk of damage!
Step 6
Never test the direction of rotation with liquid in the pump.
Pre-use check:
1. Start and stop the motor momentarily.
2. Ensure that the direction of rotation of the motor is
anti-clockwise as viewed from the back of the motor.
3100-0012

9

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.
3.3 Installation/Pre-use check - MR-185S and MR-200S
Step 1
Always read the technical data carefully.
Never stick your fingers or any tool through the adaptor or the
drain hole in the pump casing when the pump is running.
Always have the pump electrically connected by
authorised personnel.
CAUTION
Alfa Laval cannot be held responsible for incorrect
installation.
Step 2
Ensure a clearance of at least 0.5 m around the pump.
3100-0013
Step 3
Ensure that the flow direction is correct.
3100-0014
Step 4
1. Ensure that pipelines are routed correctly.
2. Ensure that connections are tight.
Min. 1m
Few bends!
Correct!
3100-0015

Remember seal rings!
10

3 Installation
Step 5
Avoid stresses to the pump.
Pay special attention to:
-Vibrations.
- Thermal expansion of the tubes.
- Excessive welding.
- Overloading of the pipelines.
3100-0016
!
Risk of damage!
Step 6
Never test the direction of rotation with liquid in the pump.
Pre-use check:
1. Start and stop the motor momentarily.
2. Ensure that the direction of rotation of the motor is clockwise
as viewed from the back of the motor.
3100-0017

3.4 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 accordance with local regulations.
• Scrapping
- At the end of use, the equipment shall be recycled according to the relevant, local regulations. Besides 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 your local Alfa Laval sales company.
11

4Operation
Study the instructions carefully and pay special attention to the warnings!
Thepumpisfittedwit
h a warning label indicating correct throttling.
4.1 Operation/Control
Step 1
Always read the technical data carefully.
CAUTION
Alfa Laval cannot be held responsible for incorrect
operation/control.
Step 2
Never touch the pump or the pipelines when pumping hot liquids
or when sterilising.
Never stick your fingers or any tool through the adaptor or the
drain hole in the pump casing when the pump is running.
Danger of burns!
Rotating parts!
3100-0018
Step 3
Never run the pump with both the suction side and the pressure
side blocked.
Danger of explosion!
!
3100-0019
!
!
See the
warning label!
Step 4
CAUTION
The shaft seal must not run dry.
CAUTION
Never throttle the inlet side.
Control:
Reduce the capacity by means of:
- Throttling the pressure side of the pump.
- Speed control of the motor.
Do not allow
to run dry
3100-0020


12

4Operation
Pay attention to possible faults.
Study the instructions carefully.
4.2 Trouble shooting and remedy
Step 1
NOTE
Study the maintenance instructions carefully before replacing worn
parts.
Problem Cause/result Remedy
Leaking shaft seal - Dry run (see section 3.1) Replace:
All wearing parts (see section 4.3)
- Incorrect rubber grade - Select a different rubber grade
- Abrasive particles in the liquid - Select stationary and rotating seal ring
in silicon carbide/silicon carbide (only
MR-185S, -200S)
Leaking seals Incorrect rubber grade Select a different rubber grade
13

4Operation
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
Step 1
Always handle lye and acid with great care.
Caustic danger!
Always use rubber gloves! Always use protective
goggles!
Step 2
Never touch the pump or the pipelines when pumping hot liquids
or when sterilising.
3100-0018
Danger of burns!
Step 3
Examples of cleaning agents: Use clean water, free from chlorides.
1. 1% by weight NaOH at 70°C (158°F).
1kg(2.2lb) +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.
Sterilisation of milk/viscous
liquids
⇒Increase the cleaning flow!
Step 4
!
Always rinse well with clean water after using a cleaning agent.
NOTE
The cleaning agents must be stored/disposed of in accordance
with current regulations/directives.
Always rinse!
Clean 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
Step 1
Always read the technical data carefully.
Always disconnect the power supply when servicing the pump.
NOTE
All scrap must be stored/discharged in accordance
with current rules/directives.
Step 2
Never service the pump when it is hot.
3100-0018
Danger of burns!
Step 3
The pump and the pipelines must never be pressurised when the
pump is serviced.
3100-0021
Atmospheric
pressure required!
Step 4
CAUTION
Always ensure that the impeller rotates smoothly after service.
CAUTION
Fit the electrical connections correctly if they have been removed from the motor during service.
Pay special attention to the warnings!
1. Rotate impeller (11) through the inlet.
2. Ensure that the impeller does not come into contact with pump casing (9) or casing cover (10).
3. Adjust the impeller position if necessary (see section 4.4 for MR-166S and section 4.5 for MR-185S and MR-200S).
Step 5
Ordering spare parts
Contact your local Alfa Laval sales company.
Recommended spare parts:
Order service kits from the service kits list (see chapter 7 Parts list and service kits.)
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.
Shaft seals Rubber seals Motor bearings
Preventive maintenance Replace after 12 months
(one-shift)
Complete shaft seal
Replace when replacing the
shaft seal
Maintenance after leakage
(leakage normally starts slowly)
Replace at the end of the day:
Complete shaft seal
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
inspection planning
Replace after leakage:
Complete shaft seal
Replace when replacing the
shaft seal
Yearly inspection is recomm.
- Replace complete bearing
if worn
- Ensure that the bearing is
axially locked (See motor
instructions)
Lubrication Before fitting
Lubricate the O-rings with
silicone grease or silicone oil
(not the sealing surfaces)
Before fitting
Silicone grease or silicone oil
None
The bearings are permanently
lubricated
16

5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly.
5.2 Dismantling of pump - MR-166S
Step 1
Loosen screws (43) and remove shroud (5).
3100-0022
Step 2
Remove covers (2a)
3100-0081
Step 3
Remove cap nuts (14), washers (15a) and casing cover (10).
3100-0023
Step 4
Remove O-ring (8) from pump casing (9).
3100-0024
17

5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly.
Step 5
1. Remove impeller nut clockwise (13),
(counterhold stub shaft (3)).
2. Remove impeller (11) from the stub shaft.
3100-0025
Step 6
Remove key (12) from stub shaft (3) using a pair of pliers.
3100-0026
Step 7
Turn stationary seal ring (29) anti-clockwise and remove it from
pump casing (9) (use the tool supplied).
3100-0027
Step 8
Remove O-ring (30) from stationary seal ring (29).
3100-0028
Step 9
Remove rotating seal ring (28), O-ring (27), washer (26), spacer
ring (25) and spring (24) from stub shaft (3).
NOTE!
If necessary, insert a screwdriver through the hole in the pump
casing (9) and push the seal parts out.
3100-0029
Step 10
1. Remove screws (45) and washers (46).
2. Remove bracket (2) together with pump casing (9).
3100-0030
18

5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly.
Step 11
1. Remove screws (40).
2. Remove pump casing (9) from bracket (2).
3100-0031
Step 12
Remove thrower (21) from stub shaft (3).
3100-0032
Step 13
1. Loosen screws (4)
2. Remove stub shaft (3).
3100-0033
19

5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly.
5.3 Dismantling of pump - MR-185S and MR-200S
Step 1
Remove screws (34), shroud (31) and distance sleeve (42).
3100-0034
Step 2
Remove covers (2a)
3100-0082
Step 3
Remove cap nuts (14), washers (15a) and casing cover (10).
3100-0035
Step 4
Remove O-ring (8) from pump casing (9).
3100-0036
Step 5
1. Remove impeller nut (13) anti-clockwise, (counterhold stub
shaft (3)).
2. Remove impeller (11) from the stub shaft.
3100-0037
20