INOXPA BMI Manual

INSTALLATION, SERVICE AND MAINTENANCE INSTRUCTIONS
VERTICAL AGITATOR
BMI
Original Manual
20.003.30.02EN
(A) 2021/12
20.003.32.0010

4INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12
1. Table of Contents
1. Table of Contents
2. Generalities
2.1.Instructions manual.......................................................................................................................................5
2.2.Compliance with the instructions ..................................................................................................................5
2.3.Warranty........................................................................................................................................................5
3. Safety
3.1.Warning symbols...........................................................................................................................................6
3.2.General safety instructions ...........................................................................................................................6
4. General Information
4.1.Description....................................................................................................................................................8
4.2.Operating principle........................................................................................................................................8
4.3.Application.....................................................................................................................................................8
5. Installation
5.1.Reception of the agitator...............................................................................................................................9
5.2.Identification of the agitator...........................................................................................................................9
5.3.Transport and storage.................................................................................................................................10
5.4.Location.......................................................................................................................................................11
5.5.Electrical installation ...................................................................................................................................11
5.6.Assembly.....................................................................................................................................................12
6. Start-up
7. Troubleshooting
8. Maintenance
8.1.General considerations...............................................................................................................................16
8.2.Maintenance................................................................................................................................................16
8.3.Lubrication...................................................................................................................................................16
8.4.Spare parts..................................................................................................................................................16
8.5.Conservation...............................................................................................................................................16
8.6.Disassembly and assembly of the agitator .................................................................................................17
9. Technical Specifications
9.1.Materials......................................................................................................................................................19
9.2.Other features.............................................................................................................................................19
9.3.Weights.......................................................................................................................................................19
9.4.Dimesnions .................................................................................................................................................20
9.5.BMI Agitator with one bearing exploded drawing and parts list..................................................................21
9.6.BMI Agitator with two bearings exploded drawing and parts list ................................................................22

Generalities
INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12 5
2. Generalities
2.1. INSTRUCTIONS MANUAL
This manual contains information about the reception, installation, operation, assembly, disassembly and
maintenance of the BCI vertical agitator.
Carefully read the instruction prior to starting the agitator, familiarize yourself with the installation, operation and
correct use of the agitator and strictly follow the instructions. These instructions should be kept in a safe location
near the installation area.
The information published in the instruction manual is based on updated data.
INOXPA reserves the right to modify this instruction manual without prior notice.
2.2. 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.
2.3. WARRANTY
Any warranty will be void immediately and lawfully and, 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 original INOXPA parts and products.
•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 General Conditions of Delivery already in your possession are also applicable.
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 authorization 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.).

Safety
6INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12
3. Safety
3.1. WARNING SYMBOLS
Safety hazard for people in general and/or for equipment
Electric hazard
Important instruction to prevent damage to the equipment and its functions
3.2. GENERAL SAFETY INSTRUCTIONS
Read the instruction manual carefully before installing and starting the agitator. Contact INOXPA in
case of doubt.
3.2.1. During the installation
The Technical Specifications of chapter 9 should always be observed.
The installation and use of the agitator should always be in accordance with applicable regulations
in regard to health and safety.
Before starting up the agitator, check that it is properly anchored and its shaft is perfectly aligned.
Incorrect alignment and/or excessive stress during coupling can cause serious mechanical
problems in the agitator.
Take all possible precautions when lifting the agitator. Always use properly attached slings when
moving the agitator with a crane or other lifting device.
Keep the motor and the switchboard under control, particularly in areas where there is a risk of fire
or explosion.
When cleaning, do not spray directly on the engine.
Do not disassemble the agitator until the switchboard has been disconnected. Remove the fuses
and disconnect the power cable supplying the motor.
All electric work should be carried out by specialised personnel.
3.2.2. During operation
The Technical Specifications of chapter 9 should always be observed. Under no circumstances can
the specified limit values be exceeded.
Before starting up the agitator, remove all the tools used during the assembly.
Do not operate the agitator when the rotating parts are not equipped with their guards or are not
properly assembled.
The agitator has rotating parts. Do not place hands or fingers in the agitator while it is operating.
This may cause serious injuries.
Do not touch the parts of the agitator that are in contact with the fluid when in operation. When the
agitator operates with hot fluids (temperatures above 50ºC), there is a risk of skin burning. In such
cases, collective-protection means (in this order or priority: separation, protective screen, heat-
insulating material) or, in the absence of this, individual protection gear (gloves) must be used.
ATTENTION

Safety
INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12 7
The agitator and its installation can generate sound levels above 85 dB(A) under unfavourable
operating conditions. In such cases, the operators must use devices for protection against noise.
3.2.3. During maintenance
The Technical Specifications of chapter 9 shall always be observed.
The agitator cannot operate without fluid. Standard agitators are not designed to work during the
filling or emptying of tanks.
The maximum operating conditions of the agitator should not be exceeded. Nor should the
operating parameters for which the agitator was initially designed be modified without written
authorisations from INOXPA.
Do not leave loose parts on the floor.
Do not disassemble the agitator until the switchboard has been disconnected. Remove the fuses
and disconnect the power cable supplying the motor.
All the electric work should be carried out by specialised personnel.

General Information
8INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12
4. General Information
4.1. DESCRIPTION
The BMI series range is vertical agitators with a stainless steel base and a lip seal as a sealing system.
Although these agitators are very compact, they have a bearing bracket which is totally independent of the
motor. The half shaft is guided by one or two bearings which withstand the axial and radial forces transmitted by
the agitation element. The agitator shaft is directly attached to half shaft with two allen studs.
4.2. OPERATING PRINCIPLE
The agitators are usually installed off-centre to prevent product rotation but can also be installed centred in
conjunction with deflector baffles in the tank.
The rotating propeller pushes the product towards the bottom of the tank, where it is diverted generating an
upward flow along the tank walls so that the product reaches the surface of liquid. This effect is enhanced if the
tank has a rounded base.
4.3. APPLICATION
The BMI vertical agitators can be used in mixing, dissolution, dispersion and maintenance processes requiring
strong agitation at high speeds, as well as in the food processing, cosmetics and chemical industries selecting
the appropriate finish in each case.
Applicable to tanks with capacities of up to 10.000 litres usually with low viscosity products.
Each agitator has performance limits. The agitator was selected for a given set of mixing conditions
when the order was placed. INOXPA shall not be held responsible for any damage that might be
suffered or malfunctioning of the equipment of the information provided by the buyer is incomplete
or incorrect. (e.g. nature of the fluids or installation details).

Installation
INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12 9
5. Installation
5.1. RECEPTION OF THE AGITATOR
INOXPA is not liable for any deterioration of the material caused by its transport or unpacking.
Visually check that the packaging has not been damaged.
If the agitator is supplied without a drive or other element, the purchaser shall be responsible for its
assembly, installation, start-up and operation.
When receiving the agitator, check the packaging and its content to ensure that it matches the delivery note.
INOXPA packs the agitators in their fully assembled form or disassembled on a case-by-case basis. Ensure that
the agitator has not been damaged in any way. If it is not in good condition and/or any parts are missing, the
carrier must submit a report as soon as possible.
The following documentation is included with the agitator:
•shipping documents,
•instructions and Servicing manual for the agitator,
•instructions and Servicing manual for the gear-motor when the agitator is supplied with a motor by
INOXPA.
5.2. IDENTIFICATION OF THE AGITATOR
The agitator is identified using a rating plate fixed onto the motor. The type of agitator and the serial number
appear on the nameplate.
Serial number
20.003.32.0009

Installation
10 INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12
BMI
1.
10
-
4
011
-
1
-
150
Diameter of the agitation element
150
150 mm
160
160 mm
175
175 mm
200
200 mm
225
225 mm
Motor
1
IP-55
2
IP-65
3
Flameproof
4
Explosion-proof
5
Single phase
Motor power
007
0,75 kW
011
1,1 kW
015
1,5 kW
022
2,2 kW
030
3 kW
040
4 kW
055
5,5 kW
Motor speed
4 poles
1.500 rpm
6 poles
1.000 rpm
Type of agitation elements
10
Marine type
4
Sawtooth type
Number of agitation elements
1
One agitation element
2
Two agitation elements
Name of the agitator
BMI
Vertical agitator with motor
5.3. TRANSPORT AND STORAGE
According to the model, the agitators are too heavy to be stored or installed manually. Use an
appropriate mode of transport. Do not handle the agitator by the shaft as this may become
deformed.
ATTENTION
NN

Installation
INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12 11
Take all possible precautions when lifting the agitator. Always use properly attached slings when
moving the agitator with a crane or other lifting device.
If the agitator is not to be installed immediately, it must be stored in an appropriate place. The shaft must be
stored in a horizontal position and placed on wooden supports or for a similar material. In this position, the shaft
will not become deformed but it must not be subject to any type of load.
5.4. LOCATION
Place the agitator in such a way as to facilitate inspections and checks. Leave enough room around the agitator
for service, disassembly and maintenance operations. It is very important to be able to access the electric
connection device of the agitator, even when in operation.
For a good agitation process, it may be necessary to place a deflector in the tank. Ask our Technical
Department for information on any particular application. If required, the approximate dimensions for the
deflector for different tank diameter are shown in the next figure and the next table:
5.5. ELECTRICAL INSTALLATION
Before connecting the electrical motor to the mains, check local regulations on electrical safety as well as the
applicable standards.
Check the instructions manual of the manufacturer of the motor for information on how to connect it to the
mains.
Take the connection of the electrical motors must be performed by qualified personnel.
Take the appropriate measures to prevent any fault.
The motor must be provided with devices for protection against power overload and short-circuits.
The agitator cannot be used in areas where there is a risk of fire or explosion when this has not
been specified in the order.
D
300
400
500
600
800
1000
1200
1600
2000
2500
3000
3500
4000
A
20
30
35
40
50
70
80
115
130
180
200
240
280
S
5
5
10
10
10
15
20
20
30
30
50
50
50
ATTENTION
20.005.32.0003

Installation
12 INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12
5.6. ASSEMBLY
To locate and fix the agitator in the support flange of the tank, the propeller must be removed from the shaft.
Once the base of the agitator is placed on the supporting flange, the fixing nuts and screws will be assembled in
their corresponding holes, without being tightened. When this operation has been carried out, the agitator must
be levelled using the following method:
1. Place a spirit level against the shaft.
2. Check 4 points at 90º to each other around the circumference of the shaft and at the same height.
3. Once the shaft is level, firmly tighten the fixing nuts and screws. Finally the propeller is mounted on the
end of the shaft. Be careful when assembling the shaft not to hit or strain it so as to avoid it being bent.
Force should never be applied to the end of the agitator shaft, as it can easily suffer permanent
damage.
Check the alignment of the agitator shaft with the half shaft once its assembly is completed.
ATTENTION
ATTENTION

Start-up
INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12 13
6. Start-up
The start-up of the agitator can be carried out provided the instructions indicated in the chapter 5.
Installation have been followed.
•Check that the power supply matches the rating indicated on the motor plate.
•Check the alignment of the agitator shaft.
•Check the level of fluid in the tank. When not specified in the order, the agitator cannot be operated
during the filling or emptying of the tank.
The agitator can NEVER operate without fluid. The agitation elements may only be submerged to a
height equal to 1,5 times its diameter.
•All the guards must be in place.
•Start up the agitator.
•Check that the direction of rotation of the propellers is correct (it must rotate clockwise when see form the
drive side). See the next figure:
Follow the direction of rotation of the agitation components as indicated by the arrow attached to
the engine. An incorrect direction of rotations results in a loss of agitation performance.
•Check the electrical consumption of the motor.
ATTENTION
20.003.32.0003
20.003.32.0004

Start-up
14 INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12
Do not modify the operating parameters for which the agitator was initially designed without written
authorisation from INOXPA (risk of damage and user hazard).
Follow the instructions for use and the safety requirements described in the instructions manual for
the tank in which the agitator is mounted.
Mechanical risks (e.g. drag, shear, cutting, impact, flattening and pinching). If the agitation element
is accessible from the top or the tank inspections hatch, then the user will be exposed to the
above-mentioned risks.
The tank must be fitted with protective devices and safety equipment. Consult the manufacturer’s instructions
manual.
Introducing an object or solid raw material may cause the agitation component and other
mechanical parts to break and compromise its safety or guarantee.
ATTENTION
ATTENTION

Troubleshooting
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7. Troubleshooting
The attached table lists solutions to problems that may arise while operating the agitator. It is assumed that the
agitator has been properly installed and that is has been selected correctly for the specific application.
Contact INOXPA if technical assistance is required.
Motor overload
Insufficient agitation
Vibrations and noise
Leaks
PROBABLE CAUSES
SOLUTIONS
•
•
Viscosity of the liquid too high
Reduce the viscosity, e.g. by heating
the liquid
•
High density
Increase motor power
•
Tank too big for the chosen agitator
Check with the technical department
•
Wrong direction of rotation
Change direction of rotation
•
Agitator speed too low
Increase the speed
•
Liquid level insufficient or none
Check liquid level in the tank
•
Shaft bended
Replace the shaft
•
Critical speed
Check with the technical department
•
Worn bearings
Replace the bearings agitator
•
Lip seal worn or damaged
If the lip seal is worn, replace it.
If the lip seal is damaged, consult the
technical department.
If the problems persist stop using the agitator immediately. Contact the agitator manufacturer or the
representative.

Maintenance
16 INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12
8. Maintenance
8.1. GENERAL CONSIDERATIONS
This agitator, 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 9. Technical Specifications.
Maintenance work can only be carried out by qualified personnel that are trained and equipped
with the necessary resources to carrying out this work.
Before beginning maintenance work, ensure that the electric motor is disconnected and that the
tank is empty.
All parts or materials that are replaced must be properly disposed of/recycled in accordance with
the current directives applicable in each area.
Before beginning maintenance work, ensure that the agitator is disconnected.
8.2. MAINTENANCE
•Inspect the agitator regularly.
•Do not fail to keep the agitator clean.
•Check the state of the motor or the gear motor.
•Check the state of the bearings.
•Check the sealing: seal and/or V-ring.
Motor or gear motor maintenance shall be carried out in accordance with the manufacturer’s instructions, see
the instructions manual.
8.3. LUBRICATION
The BMI vertical agitators are mounted on permanently greased bearings, which do not need maintenance. The
bearings can be re-greased by stripping the support, cleaning the previous grease off the bearings or by
replacing them. The bearing houses are also cleaned and finally re-greased with a 50% - 70% grease.
When re-greasing, use only special grease for ball bearings with the following properties:
•Lithium-based or made up of high quality lithium,
•Viscosity 100-140 cSt at 40ºC,
•Consistency NLGI grade 2 or 3,
•Continuous work temperature -30ºC to 120ºC.
The lubrication of the bearings of the motor or the gear motor will be carried out according to the manufacturer’s
instructions.
8.4. SPARE PARTS
To order spare parts it is necessary to indicate the type and serial number included on the agitator’s
characteristics plate, as well as the position and description of the part as found in chapter 9. Technical
Specifications.
8.5. CONSERVATION
If the agitator is out of service for a considerable period of time, clean and treat the parts with VG46 mineral oil.
The shaft must be stored in the horizontal position and on wooden supports or on supports of a similar material.

Maintenance
INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12 17
8.6. DISASSEMBLY AND ASSEMBLY OF THE AGITATOR
The disassembly and assembly of the agitators should only be carried out by qualified personnel
using only appropriate tools. Ensure that staff read these instructions manual attentively,
particularly the instructions that relate to their work.
Stop the motor from starting up when carrying out assembly and disassembly work on the agitator.
Place the agitator switch in the “off” position.
Lock out the electrical switchboard or place a warning sign.
Remove the fuses and take them to the workplace.
8.6.1. Disassembly of the agitator
Once the motor has been disconnected, disassembly work of the agitator may begin:
- Agitator with bearing support with one ball bearing:
•Take the agitator out of the tank
•Remove the marine propeller (02) from the agitator shaft (05),
unscrewing the allen studs (55).
•Remove the agitator shaft (05) from the half-shaft (26) through the allen
studs (55A).
•Remove the hexagonal screws (52) and flat washers (53) and take out
the motor (93).
•Remove the countersunk screws (50). Hit the upper part of the half-shaft
(26) with a nylon hammer and take out the unit formed by the half-shaft
(26), ball bearing (70), base plate (42), lip seal (88) and bearing stop ring
(31).
•Once in the outside of the bearings support, remove the base plate (42)
from the half-shaft (26) and with the aid of a nylon hammer remove the
lip seal (88).
•Take off the elastic ring (66) with a suitable pliers and remove the ball
bearing (70) with a press. See figure 8.1
- Agitator with bearing support with two ball bearing:
•On the sawtooth propeller (02), remove the hexagonal screw (52A).
Once extracted it, leave the propeller bucket (02A) with the dragging
pivots (02C), the sawtooth propeller (02) and the washer (02B).
•Remove the hexagonal screws (52) and flat washers (53), and take out
the motor (93).
•Remove the countersunk screws (50). Hit the upper part of the agitator
shaft (05) with nylon hammer and take out the unit formed by the agitator
shaft (05), ball bearings (70, 70A), base plate (42), lip seal (88) and
bearing stop ring (31).
•Once in the outside of the bearings support, remove the base plate (42)
from the agitator shaft (05) and with the aid of a nylon hammer remove
the lip seal (88).
•Take off the elastic ring (66) of the upper ball bearing with suitable pliers
and remove the upper ball bearing (70A) with a press. Then, remove the
other elastic rings (66) and proceed to disassembly the bottom ball
bearing (70) with a press. See figure 8.1.
20.003.32.0005
Figure 8.1

Maintenance
18 INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12
8.6.2. Assembly of the agitator
•Put the bearing stop ring (31) and the lip seal (88) in the base plate (42).
•Next proceed to disassembly of bearings according to the case.
- Agitator with bearing support with one ball bearing:
Fit the ball bearing (70) and the elastic ring (66) on the half-shaft (26).
After the half shaft/ball bearing unit has been assembled, put it in the bearings support by the base
plate side until it is positioned. Fit the unit of base plate (42), bearing stop ring (31) and lip seal (88) on
the half shaft. Fit all through the countersunk screws (50).
Mount the motor (93) on the bearing support (06) and fix it with the hexagonal screws (52) and flat
washers (53).
Joint the agitator shaft (05) with the half shaft using the allen studs (55A).
Place the marine propeller (02) in the agitator shaft and tighten the allen studs (55).
Fit the agitator over the tank.
- Agitator with bearing support with two ball bearing:
Fit the lower elastic ring (66) of bottom ball bearing (70) with suitable pliers. Enter the bottom ball
bearing (70) through the top part of the agitator shaft (05), and fix it through the elastic ring (66). Then
repeat the same way for the upper ball bearing (70A).
After the shaft and ball bearings unit has been assembled, put it in the bearings support by the base
plate side until it is positioned. Fit the unit of base plate (42), bearing stop ring (31) and lip seal (88) on
the agitator shaft (05). Fit all through the countersunk screws (50).
Mount the motor (93) on the bearing support (06) and fix it with the hexagonal screws (52) and flat
washers (53).
Place the sawtooth propeller (02). Firstly, put the propeller bucket (02A) with dragging pivots (02C) at
the end of the shaft. Locate the holes of the sawtooth propeller (02) with dragging pivots (02C). The
direction of rotation must consider. Next, locate the holes of the washer (02B) with the dragging pivots
(02C) and, finally, tightening the hexagonal screw (52A).
Fit the agitator over the tank.

Technical Specifications
INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12 19
9. Technical Specifications
9.1. MATERIALS
Parts in contact with the product AISI 316L
Other steel parts AISI 304
Retainer NBR
Bearing support AISI 316L
Surface finish Ra ≤ 0,8 μm (except sawtooth propeller)
9.2. OTHER FEATURES
Motor IEC B5, IP 55, F class insulation
Speed (rpm) 1.000 –1.500
Motor power (kW) 4
Shaft length (mm) 1.400 –1.500
Shaft diameter (mm) 20 - 45
Propeller diameter (mm) 150 –225
Propeller Marine propeller (type 10) –Sawtooth propeller (type 4)
9.3. WEIGHTS
Type agitator
Weigh (kg)
BMI 1.10-4011-1-160
30
BMI 1.10-4015-1-175
33
BMI 1.10-4030-1-200
41
BMI 1.10-4055-1-225
57
BMI 1.10-6007-1-175
30
BMI 1.10-6011-1-200
33
BMI 1.10-6015-1-225
42
BMI 1.4-4022-1-150
38
BMI 1.4-4040-1-200
44

Technical Specifications
20 INOXPA S.A.U. 20.003.30.02EN · (A) 2021/12
9.4. DIMENSIONS
Type agitator
Dimensions (mm)
A
B
C
BMI 1.10-4011-1-160
160
1.915
270
BMI 1.10-4015-1-175
175
1.915
295
BMI 1.10-4030-1-200
200
1.943
325
BMI 1.10-4055-1-225
225
1.946
350
BMI 1.10-6007-1-175
175
1.915
270
BMI 1.10-6011-1-200
200
1.915
295
BMI 1.10-6015-1-225
225
1.943
325
BMI 1.4-4022-1-150
150
2.043
325
BMI 1.4-4040-1-200
200
2.046
350
20.003.32.0006