INOXPA MM-1 Manual

INSTALLATION, SERVICE AND
MAINTENANCE INSTRUCTIONS
Table blender
MM-1, MM-2, MM-3
INOXPA, S.A.
c/Telers, 54 Aptdo. 174
E-17820 Banyoles
Girona (Spain)
Tel. : (34) 972 - 57 52 00
Fax. : (34) 972 - 57 55 02
email: [e-mail]
www.inoxpa.com
Original Manual
02.100.30.01EN
2021/11
(A)

2021/11 1.Safety 3
1. Safety
1.1. INSTRUCTION MANUAL
This manual contains information regarding the reception, installation, operation, assembly, disassembly and
maintenance of the MM table blender.
The information published in the instruction manual is based on updated data.
INOXPA reserves the right to modify this instruction manual without prior notice.
1.2. INSTRUCTIONS FOR START-UP
This instruction manual contains essential and useful information for the correct handling and maintenance of your
blender.
Carefully read the instructions prior to starting the blender, familiarise yourself with the installation, operation and
correct use of the table blender and strictly follow the instructions. These instructions should be kept in a safe location
near the installation area.
1.3. SAFETY
1.3.1. Warning symbols
Safety hazard for people in general
Danger of injury caused by rotating
equipment parts
Electric hazard
Danger! Caustic or corrosive agents.
Danger! Suspended loads
Danger for the correct operation of the
equipment
Mandatory to ensure safety at the workplace
Mandatory use of safety goggles
1.4. GENERAL SAFETY INSTRUCTIONS
Read the instruction manual carefully before installing and starting the table blender. Contact INOXPA in
case of doubt.
1.4.1. During the installation
The Technical Specifications of Chapter 8 should always be observed.
Never start the blender before connecting it to the lines.
Do not operate the blender if the pump cover is not fitted.
Check for proper specifications of the motor, especially if its working conditions create an explosion hazard.
During the installation, all the electric work should be carried out by authorised personnel.

4 1.Safety 2021/11
1.4.2. During operation
The Technical Specifications of Chapter 8 should always be observed. Under no circumstances can the
specified limit values be exceeded.
NEVER touch the blender or the pipework during operation if the pump is being used for transferring hot
liquids or during cleaning.
The blender contains moving parts. Never place your fingers inside the blender during operation.
NEVER operate with the suction and discharge valves closed.
NEVER spray water directly on the electrical motor. The standard motor protection is IP-55: protection
against dust and water spray.
1.4.3. During maintenance
The Technical Specifications of Chapter 8 shall always be observed.
NEVER disassemble the table blender until the pipes have been emptied. Remember that liquid will remain
inside the pump’s body and you need to empty through the drain. Bear in mind that the pumped liquid
may be hazardous or extremely hot. Consult the regulations in effect in each country for these cases.
Do not leave loose parts on the floor.
ALWAYS disconnect the electrical power to the blender before to carrying out any maintenance. Remove
the fuses and disconnect the cables from the motor’s terminals.
All electrical work must be carried out by authorised personnel.
1.4.4. Compliance with the instructions
Not following the instructions may impose a risk for the operators, the environment and the machine, and may result
in the loss of the right to claim damages.
This non-compliance may result in the following risks:
•Failure of important machine/plant functions.
•Failure of specific maintenance and repair procedures.
•Possible electrical, mechanical and chemical hazards.
•Risk to the environment due to the type of substances released.
1.4.5. Warranty
Any warranty will be void immediately and lawfully; additionally, INOXPA will be compensated for any civil liability
claims submitted by third parties, in the following cases:
•The service and maintenance work have not been carried out in accordance with the service instructions, the
repairs have not been carried out by our personnel or have been carried out without our written authorisation;
•Modifications have been carried out on our material or equipment without written authorisation;
•The parts or lubricants used are not INOXPA genuine parts;
•The material or equipment has been improperly used, has been used negligently, or has not been used
according to the instructions and their intended;
•The blender parts are damaged because they have been subjected to high pressure due to not having used a
safety valve.
The General Conditions of Delivery already in your possession are also applicable.

2021/11 1.Safety 5
The machine may not undergo any modification without prior approval from the manufacturer. For your
safety, only use original spare parts and accessories.
The usage of other parts will relieve the manufacturer of any liability.
Changing the service conditions can only be carried out with prior written authorisation from INOXPA
Please do not hesitate to contact us in case of doubts or if further explanations are required regarding specific data
(adjustments, assembly, disassembly, etc.).

6 2.Table of contents 2021/11
2. Table of contents
1. Safety 3
1.1. Instruction manual.........................................................................................................3
1.2. Instructions for start-up..................................................................................................3
1.3. Safety...........................................................................................................................3
1.4. General safety instructions..............................................................................................3
2. Table of contents 6
3. General Information 7
3.1. Description....................................................................................................................7
3.2. Principle of operation .....................................................................................................7
3.3. Products to avoid...........................................................................................................8
3.4. Application ....................................................................................................................8
4. Installation 9
4.1. Reception of the blender ................................................................................................9
4.2. Transport and storage..................................................................................................10
4.3. Location......................................................................................................................10
4.4. Pipes ..........................................................................................................................10
4.5. Double mechanical seal ................................................................................................11
4.6. Electrical installation.....................................................................................................11
5. Starting the blender 13
5.1. Start-up ......................................................................................................................13
6. Operating problems 14
7. Maintenance 15
7.1. General considerations .................................................................................................15
7.2. Storage.......................................................................................................................15
7.3. Cleaning......................................................................................................................15
7.4. DisAssembly / Assembly of the table blender..................................................................17
8. Technical Specifications 19
8.1. Technical Specifications................................................................................................19
8.2. Tightening torques.......................................................................................................20
8.3. Weights ......................................................................................................................20
8.4. Table blender dimensions MM-1 / MM-2 / MM-3..............................................................21
8.5. Table blender dimensions MM-1M / MM-2M / MM-3M ......................................................21
8.6. cross section MM-1 / MM-2 / MM-3................................................................................22
8.7. MM-1 / MM-2 / MM-3 parts list......................................................................................22
8.8. Cross section MM-1M / MM-2M / MM-3M........................................................................23
8.9. MM-1M / MM-2M / MM-3M parts list ..............................................................................23

2021/11 3.General Information 7
3. General Information
3.1. DESCRIPTION
This blender is comprised of a centrifugal pump that as an option feeds an in-line mixer. A device is installed at the
pump’s intake that is used for introducing solids, which are suctioned from the hopper incorporated on the frame.
This unit is approved for use with food products.
3.2. PRINCIPLE OF OPERATION
The suction created at the pump’s intake, suctions the powder added to the fluid from the hopper. Subsequently, the
flow passes through the centrifugal pump where a pre-mixture of the solid is created. Then, the flow passes through
the In-line mixer, where the mixing or dissolving is completed and if any lumps are present, it is completely destroyed.
The adding of solids can be regulated by means of a butterfly valve located at the base of the hopper.
The powder inlet pipe is dry during the operation of the blender.
If the inlet pipe is obstructed, first verify that the blender rotates in the proper direction and then verify that the flow
is sufficient.
The reasons why the powder can be moistened or wet down are the following:
•Improper liquid inlet flow. When the flow is low, which is normally created by the equipment feed
backpressure being too high, the flow may not be able to sweep the solids that are being added or even the liquid
may not be able flow up the pipe and into the hopper.
•Improper pressure. The differential pressure of the blender must be low (6-9 m), the same as the pressure at
the inlet to the blender, which must be negative but without resulting in cavitation since this would be
counterproductive.
•High viscosity. By nature, a viscous product causes a backpressure that can cause the equipment to move an
improper flow for its operation. A centrifugal pump drastically minimizes its flow if the viscosity of the product
increases.
•High feed pressure. A feed line that is too long or has a diameter that is too small, or if the viscosity is too high
will generate a very high backpressure.
To solve this problem the line should be properly sized. It is important that a negative pressure be maintained at the
inlet to the blender.
The amount of powder that can be added is very difficult to predict since it depends on a large number of variables.
Some of the most important variables are:
•Humidity.
•Fat content
•Microscopic texture (soft, rough).
•Density.
•Fluidity (volume of air in the product)
•Powder type (granular, flakes, fines, etc.)
The amount of powder that can be dissolved in the blender depends on the characteristics of the product.

8 3.General Information 2021/11
3.3. PRODUCTS TO AVOID
Abrasives: These products deteriorate the mechanical seals and the impellers.
Effervescent: The gas these emit prevents the vacuum from forming and prevents the powder from falling from the
hopper.
High temperatures: Working at more than 65 ºC, is not recommended since vapours can be released, which may
obstruct the diffuser. Also, they may cause cavitation of the blender since this temperature is close to the boiling
point.
Very high viscosities: The blenders are not able to pump products with a high viscosity. The maximum viscosity of
the blenders is 400 cps.
Incompatible products: Products incompatible with the different mechanical seals and elastomers.
3.4. APPLICATION
These blenders can be used in any process where first powder is added and then it is dissolved in a liquid. Examples:
-Powdered milk.
-Powdered serum.
-Milkshakes.
-Sauces.
-Brines.
-Fertilizers.
-Lactose.
-Syrups.
-Stabilizers, mixed with milk.
The field of application for each type of blender is limited. The blender is usually selected for certain
working conditions present at the time it is ordered. INOXPA will not be liable for any damage that may
occur if the information provided by the buyer is incomplete (specifications of the liquid, RPM, etc.).

2021/11 4.Installation 9
4. Installation
4.1. RECEPTION OF THE BLENDER
INOXPA will not be liable for any deterioration of the material due to transport or unpacking. Visually
check that the packaging has not been damaged.
The following documentation is included with the blender:
•Shipping documents.
•Instructions and Servicing manual for the table blender.
•Instructions and Servicing manual for the motor (*).
•(*) If the blender has been supplied with a motor from INOXPA.
Unpack the blender and check the following:
•The suction and discharge connections and the hopper of
the blender, removing any remaining packaging material.
•Check that the pump and mixer (if there is) have not
suffered any damage.
•If not in good material condition and/or if not all the parts
are included, the shipping carrier should submit a report
as soon as possible.
4.1.1. Identification of the blender
Each blender has a nameplate with the basic data required to identify the model.
Table blender plate
MODEL
YEAR
C. TELERS, 54 . 17820 BANYOLES
GIRONA (SPAIN) . www.inoxpa.com
INOXPA S.A.
SOURCE OF SOLUTIONS
R
S/N
kW VHz
TYPE
DESCRIPTION
02.100.32.0003
Serial number

10 4.Installation 2021/11
4.2. TRANSPORT AND STORAGE
The blenders incorporate wheels so they can be moved but in case of being stored for shipping, refer to
the diagram for lifting the unit
Lift the blender as indicated below:
4.3. LOCATION
Place the blender in a position that allows enough space around it to provide access to all the skid. (Refer to Section 8 .
Technical Specifications for dimensions and weights.
Place the blender on a flat and level surface.
Install the blender so that it can be properly ventilated.
If the blender is installed outdoors, it must be sheltered under a roof. Its location must allow for easy
access during any inspection or maintenance tasks.
4.4. PIPES
•As a general rule, install the suction and discharge lines in straight sections, with the minimum possible number of
elbows and fittings in order to reduce any pressure losses that may be caused by friction.
•Make sure that the blender’s ports are properly aligned with the pipework and have a diameter similar to that of the
pump connections.
•Place the blender as close as possible to the suction tank and whenever possible below the liquid level, or even
below the tank level in order to achieve the largest possible static head for suction.
•Install support brackets for the lines as close as possible to the blender's suction and discharge ports.
4.4.1. Shut-off valves
The table blender may be isolated for maintenance. To accomplish this, shut-off valves must be installed and
connected to the blender's suction and discharge connections.
These valves must ALWAYS be open during operation of the blender.
02.100.32.0004
ATTENTION!
Make sure that the blender is
secured to prevent overturn it.

2021/11 4.Installation 11
4.5. DOUBLE MECHANICAL SEAL
Models with double mechanical seal may require the installation of auxiliary cooling circuit for them. As shown in next
figure, will be assembled the inlet connection on the bottom and the outlet on the top ensuring that the chamber is
full of liquid.
4.6. ELECTRICAL INSTALLATION
Only qualified personnel can connect the electric motors.
Take the necessary measures to prevent damage to cables and connections.
Electrical equipment, terminals and components of the control systems may still carry current when they
are disconnected. Contacting them may impose a hazard to operators or cause irreparable material
damage.
Prior to handling the blender, make sure that the electrical panel is disconnected.
•Connect the motor in accordance with the instructions supplied by the motor manufacturer.
•Check the direction of rotation.
The recommended flow of cooling liquid is around 0,25-0,6 l/min and a working pressure of 0-1 bar.
ALWAYS connect the cooling inlet on the bottom connection of the seal chamber and the outlet connection
on the top.
02.100.32.0005

12 4.Installation 2021/11
Start and stop the pump and/or mixer motor momentarily. Make sure, looking at the pump from behind, that the
motor fan rotates in a clockwise direction.
ALWAYS check the direction of rotation of the motor with liquid inside the blender.
For models with a seal chamber, ALWAYS ensure that it is full of liquid prior to checking the direction of
rotation.
02.100.32.0006
ATTENTION!
See indicator label on the pump
and/or the mixer.

2021/11 5.Starting the blender 13
5. Starting the blender
Prior to starting the blender, carefully read the instructions in Section 4. 49H Installation .
5.1. START-UP
Carefully read Section 8. H Technical Specifications . INOXPA will not be liable for improper use of the
equipment.
NEVER touch the blender or the lines if hot liquids are being pumped.
5.1.1. Checks before starting the table blender
•Completely open the shut-off valves on the suction and discharge lines.
•If liquid does not flow towards the pump, fill it with the liquid to be pumped.
The blender must never turn dry.
•Check that the direction of rotation of the motor is correct.
•If the blender has double mechanical seal, check that the cooling circuit are connected.
5.1.2. Checks when starting the table blender
•Check that the blender is not making any strange noises.
•Check if the absolute inlet pressure is sufficient to prevent cavitation in the blender. Check the curve to obtain the
minimum required pressure above the vapour pressure (NPSHr).
•Control the discharge pressure.
•Check for leaks in the sealing areas.
A shut-off valve shall not be used to regulate the flow in the suction line. All shut-off valves must be fully
open during operation.
Control the motor consumption to prevent an electrical overload.
Reduce the flow rate and the electrical power consumed by the motor:
•By regulating the blender's discharge flow.
•By decreasing the motor speed.

14 6.Operating problems 2021/11
6. Operating problems
The attached table lists solutions to problems that may arise while operating the blender. It is assumed that the
blender has been properly installed and that is has been selected correctly for the specific application.
Contact INOXPA if technical assistance is required.
Motor overload
The pump flow or pressure is insufficient.
Incorrect powder intake
Irregular discharge flow rate / pressure.
Noise and vibrations.
The pump gets clogged.
Blender overheated.
Abnormal wear.
Leak through the mechanical seal.
PROBABLE CAUSES
SOLUTIONS
•
•
Wrong direction of rotation.
Reverse the direction of rotation .
•
•
•
•
Insufficient NPSH
Raise the suction tank.
Lower the pump.
Reduce the vapour pressure.
Widen the diameter of the suction pipe.
Shorten and simplify the suction line.
•
•
•
•
Cavitation.
Increase the suction pressure.
•
•
Discharge pressure too high
If necessary, reduce the pressure losses,
for example, by increasing the pipe
diameter.
•
•
•
Flow rate too high
Reduce the flow by means of a
diaphragm.
Partially close the discharge valve.
Trim the impeller.
Decrease speed.
•
•
•
•
•
•
Viscosity of the liquid too high.
Reduce the viscosity, for example, by
heating the liquid.
•
•
•
•
•
Liquid temperature is too high
Decrease the temperature by cooling the
liquid.
•
Mechanical seal worn or damaged.
Replace the seal.
•
Inadequate O-rings for the liquid.
Install the correct O-rings after
consulting the supplier.
•
•
•
•
The impeller scrapes
Lower the temperature.
Reduce the suction pressure.
Adjust the impeller/cover.
•
•
•
•
Foreign matter in the liquid.
Install a filter in the suction pipe.
•
Mechanical seal spring tension is too
low.
Adjust as indicated in this manual.
•
Low powder intake
Check that the valve area and the
bottom of the hopper are not wet.
Increase the flow of the hopper.
•
Liquid pours out of the hopper
Decrease the suction tank’s liquid
height.
In pressurized tanks, lower the
pressure inside the tank.

2021/11 7.Maintenance 15
7. Maintenance
7.1. GENERAL CONSIDERATIONS
This blender, just like any other machine, requires maintenance. The instructions contained in this manual cover the
identification and replacement of spare parts. The instructions are aimed at maintenance personnel and those
responsible for the supply of spare parts.
Carefully read Chapter 8. H Technical Specifications .
All replaced material should be duly disposed of/recycled according to the directives in force in each area.
ALWAYS disconnect the blender before beginning any maintenance work.
7.1.1. Check the mechanical seal
Periodically check that there are no leaks around the shaft. If leakage is detected through the mechanical seal, replace
it following the instructions in the section Assembly and Disassembly from specific instruction’s pump or mixer.
7.2. STORAGE
Before storing the blender it should be completely drained. Prevent as far as possible exposing the parts to excessively
humid environments.
7.3. CLEANING
The use of aggressive cleaning products such as caustic soda and nitric acid may burn the skin.
Use rubber gloves during the cleaning process.
Always use protective goggles.
7.3.1. CIP (Clean-in-Place) cleaning
If the blender is installed in a system with a CIP process, its removal will not be required. If an automatic
cleaning process is not available, disassemble the blender as indicated in the section Assembly and Disassembly .
Cleaning solutions for CIP processes.
Only use clear water (chlorine-free) to mix with the cleaning agents:
a) Alkaline solution: 1% by weight of caustic soda (NaOH) at 70ºC (150ºF)
1 kg NaOH + 100 litres of water = cleaning solution
or
2.2 litres of 33% NaOH + 100 litres of water = cleaning solution
b) Acid solution: 0.5% by weight of nitric acid (HNO3) at 70ºC (150ºF)
0.7 litres of 53% HNO3+ 100 litres of water = cleaning solution

16 7.Maintenance 2021/11
Check the concentration of the cleaning solutions; incorrect concentrations may lead to deterioration of
the blender seals.
To remove any traces of cleaning products, ALWAYS perform a final rinse with clean water at the end of the cleaning
process.
7.3.2. SIP (Sterilization-in-Place) cleaning
Sterilization with steam is applied to all equipment including the blender.
Do NOT use the equipment during the steam sterilization process.
The parts/materials will not be damaged if the indications specified in this manual are observed.
Make sure that no cold liquid enters the system until the temperature of the blender is lower than
60°C (140°F).
The blender generates an important pressure loss through the sterilization process. We recommend
the use of a branch circuit with a discharge valve to ensure that steam / superheated water sterilizes
the integrity of the circuit.
Maximum conditions during the SIP process with steam or overheated water
a) Max. temperature: 140°C / 284°F
b) Max. time: 30 min.
c) Cooling: Sterile air or inert gas
d) Materials: EPDM

2021/11 7.Maintenance 17
7.4. DISASSEMBLY / ASSEMBLY OF THE TABLE BLENDER
7.4.1. Hopper, venturi tube and discharge tube (only in mixer option)
Disassembly
1. Remove the clamp (91) from the bottom of the hopper.
2. Remove the blind nuts (54) and the flat washers (53). Extract the hopper (101) by moving it upward, taking
into account that the flat washer (18) and the clamp seal (91B) will be unattached.
3. Remove the butterfly valve (96) removing the clamp (91) and the seal (91C) below it.
4. Open the tube clamp (38A) to loosen the venturi tube (102). Then, remove the clamp (91) and seal (91B) that
fasten the venturi tube (102) to the pumpcasing.
5. Remove discharge tube (98) that connects the pump (01) to the elbow clamp (91F) from the mixer entrance
(02) by removing clamp (91D) and seal (91E) from the outlet pump, and the clamp (91A) and seal (91C) from
the mixer entrance.
6. Then, remove the discharge valve (96A) from the outlet pump by removing the clamp (91D) and seal (91E).
02.100.32.0007
02.100.32.0008

18 7.Maintenance 2021/11
Assembly
1. Install the discharge valve (96A) on the pump by means of seal (91E) and clamp (91D).
2. Attach the discharge tube (98) to the elbow clamp from mixer’s entrance by means of seal (91C) and clamp
(91A).
3. Finally, fasten the discharge tube (98) to the discharge valve (96A) using seal (91E) and clamp (91D).
4. Position the venturi tube (102) on the tube clamp (38A) but do not tighten down. Then, join the venturi tube
(102) to the pump by means of seal (91B) and clamp (91). Subsequently, finish fastening the venturi tube to
the frame by strongly tightening down the tube clamp (38A).
5. Join the butterfly valve (96) to the venturi tube (102) by means of seal (91B) and clamp (91).
6. To assembly the hopper, put the flat washer (18) on the frame (38) by aligning the seal drill holes with those
on the frame.
7. Place the hopper (101) on the frame (38) aligning the threaded studs used for fixing the hopper (101) with
the drill holes on the frame (38) and the seal (18).
8. Join the hopper to the butterfly valve (96) by means of seal (91B) and clamp (91).
9. Fasten the hopper (101) to the frame (38) using washers (53) and blind nuts (54).
7.4.2. Pump and/or mixer
Proceed to maintenance, disassembly and assembly of the pump and/or mixer according the specifications from own
instruction of each component.
ATTENTION! When installing the new seal on the pump or mixer, use soapy water when
fitting the different parts and gaskets to allow them to slide better; apply to the
stationary as well as the rotating parts.

2021/11 8.Technical Specifications 19
8. Technical Specifications
8.1. TECHNICAL SPECIFICATIONS
Maximum operating pressure 1000 kPa (10 bar)
Temperature range -10 to 120 °C (EPDM)
Maximum speed 3000 rpm (50 Hz)
3600 rpm (60 Hz)
Noise level 61 to 80 dB (A)
Materials
Parts in contact with the product AISI 316L (1.4404)
Other steel parts AISI 304 L (1.4306)
Gaskets in contact with the product EPDM (standard) (other materials available upon request)
Interior surface finish and hopper Polished Ra<0,8 μm
Frame surface finish and upper base Satin polished
Mechanical seal
Type Internal single or double seal, balanced
Material of rotating part Silicon carbide (SiC) (standard)
Material stationary part Silicon carbide (SiC) (standard))
Gasket material EPDM (standard)
Water consumption (double seal) 0.25 to 0.6 l/min
Pressure (double seal) from atmospheric to 100 kPa (1 bar)
When the sound pressure level in the operating area exceeds 80 dB(A), appropriate personal protective
equipment must be used.
SIZE
Centrifugal pump
Mixer in-line
Working
flow
(m3/h)
Powder intake (kg/h)
Hopper
volume
(L.)
Model
Power
(kW)
Model
Power
(kW)
Sugar to
25ºbrix
Sugar to
50ºbrix
Milk
powder
20%
Thickener
to 400
cP
MM-1
HCP
50-150
3
-
-
25
1650
1350
950
300
45
MM-1M
ME-4105
4
MM-2
HCP
50-190
7.5
-
-
40
3700
2400
3300
450
45
MM-2M
ME-4110
7.5
MM-3
HCP
80-205
18.5
-
-
95
12800
8900
9200
600
75
MM-3M
ME-4125
18.5