INOXPA TLS Series Manual

INSTALLATION, SERVICE AND
MAINTENANCE INSTRUCTIONS
TLS LOBE PUMP
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: [email protected]
www.inoxpa.com

MANUFACTURER DECLARATION
According the EC directive about machines
98/37/CE, Annex II B
The manufacturer:
INOXPA, S. A.
c/ Telers, 54
17820 Banyoles (Girona) - Spain
Hereby declares, that the pumps
Denomination Type Manufacturing year
Comply with the pertinent disposition, in the execution supplied by INOXPA, S.A. for
the incorporation in a machine or installation, or for the assembly with other machines
as a subunit of other higher order machine.
Harmonized norms used, particularly:
EN 292 part 1 and 2, EN 809
The machine above must not be put into service until the machinery into which it has
been incorporated have been declared in conformity with the EC Machinery Directive.
It must meet, particularly, the standards EN 294, EN 563, EN 809 y EN 953 in its
respective current editions.
Year of CE marking: CE 95
Banyoles, January 1995
EC DECLARATION OF CONFORMITY
According the EC directive about machines
98/37/CE, Annex II A
The manufacturer:
INOXPA, S. A.
c/ Telers, 54
17820 Banyoles (Girona) - Spain
Hereby declares, that the pump
Denomination Type Manufacturing year
Are in conformity with the essential requirements of the Machinery Directive 98/37/CE
(latest modifications included) and according the following Council Direcitves and
harmonized norms:
- 72/23/CE Directive “low voltage”
- Norms EN 292 part 1 and 2, EN 809
Year of CE marking: CE 95
Banyoles, January 1995
LOBE ROTOR PUMP
TLS
2004
LOBE ROTOR PUMP
TLS
2004

ED.10.12/98 1. TLS Introduction 1.1
1. Introduction
CHECK THE SHIPMENT.
The first thing to do when the pump is received is to check it and ensure that the contents conform to the shipping voucher.
INOXPA inspects all equipment prior to shipment, but it cannot guarantee that the merchandise reaches the user intact.
Therefore, the pump and any other article received should be checked and in the event the item in question did not conform to
specifications and/or was missing a/some part(s), the transportation company should prepare a report as soon as possible.
Each pump bears a serial number engraved on the plate. Indicate the serial number on all documents and correspondence.
Figure 1.1: Serial number engraved on the manufacturer´s plate
If the pump is not put into service upon arrival, a complete revolution of the shaft should be made once a week.
INSTRUCTIONS MANUAL.
The information provided in the instruction manual refers to updated data.
We reserve the right to modify the design and/or manufacturing specifications of our products as required, devoid of any
obligation on our part to adapt any product supplied prior to such alteration.
The technical information made available in this instruction manual, together with the graphs and technical specifications
provided, shall continue to belong to us and should not be used (except for starting up this installation), copied, photocopied,
made available or otherwise given to third parties without our prior written consent.
INOXPA is reservation the right to modifying this instructions manual without previous notice.
START-UP INSTRUCTIONS.
This instruction manual contains vital and useful information for properly operating the pump and for keeping it in good
running condition. It also contains important instructions for avoiding possible accidents and serious damage that could be
produced prior to its start-up and during its installation, thereby ensuring its handling in the safetest way possible. Please read
the instructions carefully before operating the pump and familiarize yourself with its operation, following very carefully the
instructions provided. We wish to stress the importance of being informed on how to perform the installation correctly. It is
extremely important to keep these instructions in a secure place close to the installation.
MAINTENANCE.
This pump, like any other machine, requires routine maintenance. Chapter 9, "Spare Parts", deals with the identification of the
spare parts. It is intended for the use of technical and maintenance personnel and for those persons responsible for supplying
spare parts.
OPERATING PRINCIPLES.
A. Safety.
This symbol indicates those safety instructions contained in this manual which when not followed could
jeopardize your safety
This symbol indicates potential problems with electrical safety.
This symbol indicates a compulsory measure to be taken by the user in compliance with specific
instructions which serve to guarantee operating safety and/or protection of the pump.
Serial number

1. TLS Introduction 1.2 ED.10.12/98
B. Technical principles.
Quantity Symbol Unit
Dinamic viscosity µmPa.s (=cP=Centipoise)
Kinematic viscosity
V=µ/ρ with ρ=specific weight [Kg/dm3]
and V = kinematic viscosity
[mm2/s] = cSt = Centistoke
Only the dynamic viscosity is used in this manual.
p[bar]
Pressure ∆p[bar] - differential pressure
Pm [bar] - maximum pressure at discharge mouth (design pressure)
Unless otherwise indicated, in this manual pressure is understood to be relative pressure.
NPSH [m]
Net positive suction
head (NPSH)
In this manual, NPSH = NPSHr (NPSH required for the pump).
NPSHr = the net pressure above the liquid vapour pressure at pumping temperature and
at the pump inlet connection required to avoid performance impairment due to cavitation
at rated capacity. NPSHr is measured at the suction flange at the point where the capacity
drop = 4% of the rated capacity, and is corrected to the datum elevation.
NPSHa = the total suction pressure available from the system at the pump suction
connection, minus the vapour pressure if the liquid at pumping temperature. NPSH
available is calculated for the installation. It is the responsibility of the user to determine
this value. NPSHa ≥
≥≥
≥NPSHr + 0,5
Symbols.
It is absolutely necessary to place symbols on the pump, e.g., arrows which indicate the direction of rotation or other symbols
indicating connections to fluids. All of these symbols should be clearly visible and legible.
Training and experience.
The personnel who are responsible for the operation, maintenance, inspection and assembly of the equipment should have the
proper experience and training. The scope of their responsabilities and the supervision of the operators should be specifically
defined by the plant foreman.
If the operators did not have the required knowledge, they should be trained, which could be done by the manufacturer of the
machine or by the supplier on behalf of the shop foreman.
Furthermore, the shop foreman should make sure that the contents of the instruction manual are fully understood by the
operators.
In accordance with the instructions.
Any failure to comply with the instructions could lead to a hazard for the operators, the atmospheric conditions of the room,
and the machine, and it could lead to a loss to any right to make a claim for damages.
Such non-compliance could bring with it the following risks:
•Important operating failures of the machine / plant.
•Failure to comply with specific maintenance and repair procedures.
•Potential electrical, mechanical and chemical hazards.
•Atmospheric conditions in the room could be hazardous due to the release of chemical substances.
In accordance with the regulations governing safety at work.
The instructions contained in this manual should be followed for operating the pump, along with national regulations and any
other service and safety instructions made available by the shop foreman, so as to avoid accidents.
Safety instructions for handling.
If the machine's components, whether in a cold or warm state, constitute some hazard, then accidental contact with the same
should be avoided.
When the machine is operating, be sure that the rotating parts are protected by a shield.
In the event of a fire (e.g., mechanical seal) of hazardous fluids (e.g., explosives, toxic agents, hot products), the machine
should be emptied to prevent any risk to persons or to the ambient conditions. Existing regulations should be strictly adhered to.
Avoid any hazard which could be produced by the electrical circuits (e.g.: VDE specifications and regulations on the supply of
local energy services).

ED.10.12/98 1. TLS Introduction 1.3
Safety instructions for maintenance, inspection and assembly.
It is the shop foreman's responsibility to see to it that maintenance, inspection and assembly work is performed by qualified
personnel once they have become familiar with the subject; they should read this manual very carefully.
Work should only be done on this machine when it is stopped; it is extremely important that the procedure for stopping the
machine be followed as set forth in this manual.
Those pumps should be de-contaminated which may contain hazardous agents.
Upon completion of the work, re-install the safety and protection devices.
Prior to re-initiating the operation of the machine, the instructions given in the chapter on "Operating Principles" should be
read.
Changes without prior authorization and production of spare parts.
No modification can be made to the machine without the prior consent of the manufacturer. For your safety, use spare parts and
accessories authorized by the manufacturer.
The use of other parts exempts the manufacturer from any and all responsibility.
Unauthorized operations.
The machine's safety is only ensured if it is used properly in accordance with the instructions given in this manual.
The limits for values specified in the data sheet cannot be exceeded under any circumstances.
Any change in operating conditions can only be done with the prior written consent of INOXPA.
WARRANTY.
We wish to point out that any warranty issued will be null and void and that we are entitled to an indemnity for any civil
liability claim for products which might be filed by third parties if:
•operation and maintenance work has not been done following the corresponding instructions; the repairs have not been
made by our personnel or have been made without our written authorization;
•modifications are made to our material without prior written authorization;
•the parts or lubricants used are not original INOXPA parts/lubricants;
•the material has been improperly used due to error or negligence or have not been used according to the indications
and the intended purpose.
The General Delivery Terms which you have already received are also applicable.
INOXPA SERVICE.
In the event of doubt or should you require a fuller
explanation on particular data (adjustment, assembly,
disassembly...), please do not hesitate to contact us.

ED.10.12/98 2. TLS Table of Contents 2.1
2. Table of Contents
1. Introduction
Check the shipment ........................................................................................................... 1.1
Instruction manual .............................................................................................................1.1
Start-up instructions ..........................................................................................................1.1
Maintenance ...................................................................................................................... 1.1
Operating principles .......................................................................................................... 1.1
Safety ................................................................................................................................ 1.2
Warranty ........................................................................................................................... 1.3
INOXPA Service .............................................................................................................. 1.3
2. Table of Contents
3. General Information
Description ........................................................................................................................ 3.1
Principle of operation ........................................................................................................ 3.1
Noise ................................................................................................................................. 3.1
Application ........................................................................................................................ 3.1
Hygiene ............................................................................................................................. 3.2
Materials used in its construction ...................................................................................... 3.2
Field of application ...........................................................................................................3.2
Safety valve ....................................................................................................................... 3.3
Shaft sealing ...................................................................................................................... 3.4
4. Installation
General considerations ...................................................................................................... 4.1
Instructions for reception, transport and storage ............................................................... 4.1
Location ............................................................................................................................ 4.1
Stability ............................................................................................................................. 4.2
Handling ............................................................................................................................ 4.3
Electric motors .................................................................................................................. 4.3
Speed variators and reducers ............................................................................................. 4.4
Direction of rotation ..........................................................................................................4.4
Suction an discharge pipes ................................................................................................ 4.4
5. Start-up
General considerations ...................................................................................................... 5.1
Pre-start-up procedures...................................................................................................... 5.1
Cleaning ............................................................................................................................ 5.1
Start-up .............................................................................................................................. 5.1
Safety valve ....................................................................................................................... 5.2
6. Maintenance
General considerations ...................................................................................................... 6.1
Preparations ...................................................................................................................... 6.1
Conservation ..................................................................................................................... 6.1
External cleaning ............................................................................................................... 6.1
Electrical installation ......................................................................................................... 6.2
Maintenance ...................................................................................................................... 6.2
Oiling ................................................................................................................................ 6.2
7. Operating Problems

2. TLS Table of Contents 2.2 ED.10.12/98
8. Disassembly and Assembly
General considerations ......................................................................................................8.1
Disassembly and assembly. Pump housing ........................................................................8.2
Disassembly of the lobes and the pump cover ...................................................................8.2
Mechanical seal and shaft sleeve........................................................................................8.2
Assembly of the shaft sleeve and the pump cover .............................................................8.3
Fitting the lobes .................................................................................................................8.3
Adjusting the lobes ............................................................................................................8.5
Changing the lip seals.........................................................................................................8.6
Changing the drive ............................................................................................................8.6
9. Technical Information
Technical data ...................................................................................................................9.1
Frame of the particles .......................................................................................................9.1
Materials ............................................................................................................................9.2
TLS pump dimensions .......................................................................................................9.3
TLS pump with shroud dimensions ...................................................................................9.4
TLS pump with pressure by-pass dimensions ....................................................................9.5
TLS 1-25/1-40 Parts diagram ............................................................................................9.6
TLS 1-25/1-40 Parts list ....................................................................................................9.7
TLS 2-40/2-50 Parts diagram ............................................................................................9.8
TLS 2-40/2-50 Parts list ....................................................................................................9.9
TLS 3-50/3-80 Parts diagram ............................................................................................9.10
TLS 3-50/3-80 Parts list ....................................................................................................9.11
TLS 3-51/3-81 Parts diagram ............................................................................................9.12
TLS 3-51/3-81 Parts list ....................................................................................................9.13
TLS shroud ........................................................................................................................9.14
Single mechanical seal ......................................................................................................9.15
PTFE Lip seal TLS 1..........................................................................................................9.16
PTFE Lip seal TLS 2..........................................................................................................9.17
PTFE Lip seal TLS 3..........................................................................................................9.18
INOXPA Lip seal ..............................................................................................................9.19
10. Cleaning and Disinfection
General considerations ......................................................................................................10.1
Hygiene .............................................................................................................................10.1
Safety in cleaning and disinfection ....................................................................................10.2

ED.10.12/98 3. TLS General Information 3.1
3. General Information.
DESCRIPTION.
The TLS lobes pumps by INOXPA are part of our wide range of positive displacement rotary pumps for viscous liquids.
The following models exist in the lobe pump range:
•The TLS normal flow rate pump suitable for pressures of up to 12 bar.
•The TLS with wider lobes, delivers a higher flow rate, and is suitable for pressure of up to 7 bar.
The TLS model has been specially developed to respond to all hygienic requirements in the food industry.
As regards hygiene, reliability and sturdiness, the complete range of lobes pumps satisfies all requirements set by the aforesaid
industry.
Its modular design enables optimal part interchange between the different pumps.
PRINCIPLE OF OPERATION.
The lobe pump is a positive displacement rotary pump. The top lobe is driven by the driving shaft. The lower lobe is located on
the driven shaft, and is driven via a helical gear. Both lobes rotate in synchronism without one touching the other. When the
pump is running they displace a set volume of liquid. Figure 3.1. shows how a lobe pump operates.
Figure 3.1: Operating principle
A: When the lobes rotate, the space on the suction side increases because one lobe moves away from the other, thus causing a
partial vacuum that draws the liquid into the pumping chamber.
B: Each lobe void is filled consecutively as the shafts rotate and the liquid is displaced towards the discharge side. The small
clearances between the lobes, and between the lobes and the walls of the pump body duly cause the spaces to be rather well
closed.
C: The pump body is completely full and the liquid leaks through the meshing of the lobes, knocking against the space walls
so as to thus complete the pumping action.
NOISE.
The lobes pumps are rotary displacement pumps. Owing to the contact between the internal parts, the pressure variations, etc.
They make a louder noise than centrifugal pumps. This noise must be taken into consideration when installing these pumps.
When the noise level in the operating area exceeds 85 dB(A), a special protection shall be installed.
APPLICATION.
The main advantage of the INOXPA lobe pump is its capacity to pump a great variety of viscous liquids, from 1 mPa.s up to
100.000 mPa.s
Furthermore, it is capable of pumping liquid products that require very careful handling and liquids that contain soft solids thys
causing only a minimum degradation of same.
HYGIENE.
Special attention has been given to hygiene and cleaning requirements in the construction of the pump. The number of grooves
and dead spaces have been limited to an absolute minimum. Furthermore, no liquid can enter between the lobes and shafts.
The TLS lobes pumps by INOXPA have been approved by the American 3A Standard Authorities.

3. TLS General Information 3.2 ED.17.10/00
MATERIALS USED IN ITS CONSTRUCTION.
All pump parts which are in contact with the product are stainless steel, or are made of tasteless and odorless materials. This
makes the pump resistant to corrosion and avoids contamination of the liquid being pumped
It is necessary to check and verify that the materials (of the parts in contact with the product) are
adequate for pumping a product which is specifically for human consumption.
Table 3.1: Parts in contact with the liquid
Part Material
Pump housing AISI-316 (1.4408)
Pump cover AISI-316 (1.4408)
Trilobe AISI-316 (1.4401)
Lobe screw AISI-316 (1.4401)
Shaft sleeve AISI-316 (1.4401)
Table 3.2: Parts which can be in contact with the liquid
Part Material
Shaft AISI-316 (1.4401)
FIELD OF APPLICATION.
Figure 3.2: Field of application
The field of application for each type of pump is limited. The pump was selected for certain
pumping conditions at the time that the order was passed. INOXPA assumes no responsibility
for damages that may arise in the event that the information made available by the purchaser is
incomplete (nature of the liquid, viscosity, r.p.m. ...).
Do not use the pump for applications other than those for which it has been specified on
purchase and installation. No modifications can be made without previously consulting with
INOXPA and without the latter's written consent. A correct application shall take into account
the following: the viscosity of the product, its properties, purity, temperature, suction and
discharge pressure, r.p.m. ...
When the pump is used in a pumping unit or in an environment for which the pump has not
been designed, the operator and the material may be exposed to hazard. Consult INOXPA in
case of doubt prior to use.

ED.10.12/98 3. TLS General Information 3.3
Refer to Table 3.3 and the corresponding notes for value limits (viscosity, temperature, pressure...).
Table 3.3 : Field of application.
TLS
50 Hz 60 Hz
Theoretical flow rate litres /100 min-1 68 litres 95 litres
Maximum flow rate 29 m3/h 41 m3/h
Maximum pressure 12 bar 7 bar
Maximum connections 50 mm 80 mm
Maximum temperature 110 °C 110 °C
Maximum viscosity (recommended) 100.000 mPa.s. 100.000 mPa.s.
Maximum speed 950 min-1 950 min-1
WARNING The following limit ought to be considered for the:
- Single mechanical seal: 2500 mPa.s (Newtonian liquid)
The maximum viscosity allowed will depend on the nature of the liquid and the sliding speed of
the seal faces. Consult INOXPA should the viscosity be still greater.
SAFETY VALVE.
The positive displacement lobes pumps must be protected from excess pressure when they are
operating. Consequently, all the TLS lobes pumps can be fitted with a stainless steel safety valve or a
safety by-pass.
Protection.
This valve protects the pump and prevents excessively high pressure arising in the circuit. It reduces the differential pressure
(p) between the intake and discharge, but not the maximum pressure within the plant.
Do not use the safety valve to protect the system from excess pressure. It is designed to protect the
pump only as it is not a safety outlet.
Operation principle
The safety by-pass valve is located in the housing and prevents excess pressure arising inside the pump. For example, when the
pump's discharge mouth is clogged and the liquid cannot be pumped out, too high a pressure can cause serious damage to some
of the pump's parts. The safety valve opens a passage from the pump's discharge side to its suction side: an escape route,
redirecting the flow again to the suction side whenever specifically high pressure levels are reached.
The safety valve/by-pass is only effective in one direction of rotation.
If the safety valve operates, this will mean that the equipment is not working properly. The pump
should be disconnected immediately. Identify and solve the problem before re-starting the pump.
Remember that the safety valve in the pump is not able to be used to regulate the flow rate.
If the safety valve is not fitted in the pump, other steps should be taken to protect the pump from excess
pressure.
Setting.
The safety valve can be adjusted to any determined pressure, according to the type of pump being used.
SHAFT SEALING.
The following options for the mechanical seal are applicable to the entire range of pumps.
•Single mechanical external seal.
Table 3.4: Materials for faces exposed to friction and external mechanical seal elastomers
Rotating part Stationary part Elastomers
standard stainless steel graphite nitril
option silicon carbide silicon carbide viton

ED.10.12/98 4. TLS Installation 4.1
4. Installation.
GENERAL CONSIDERATIONS.
This manual provides basic instructions which should be taken into account when proceeding to install the pump. It is of utmost
importance that the plant foreman reads this manual before installation.
The instructions include pertinent information which will enable you to install your pump / pumping unit correctly. The manual
also contains important instructions for preventing eventual accidents and serious damage which could occur prior to start up
and during the installation.
It is imperative to put warning markers on the pump, e.g., arrows which indicate the direction of rotation or symbols indicating
fluid connections. All these warnings should be clearly visible and legible.
Any failure to comply with the instructions could result in a risk for the operators, the environment and the machine, and could
result in the loss of any right to make a claim for damages.
INSTRUCTIONS UPON DELIVERY, FOR TRANSPORT AND STORAGE.
When the machine arrives, read the instructions on page 1 of the chapter titled "Introduction".
TLS pumps and pumping units are often too heavy to be stored manually. Use an adequate means of
transport. Use the points which are indicated in the drawing for lifting the pump.
Only authorized personnel should transport the pump. Do not work or walk under heavy loads.
Figure 4.1: Lifting the pump.
LOCATION.
Piping.
Place the pump or pumping unit as close as possible to the suction tank (refer to chapter, "Pump Installation"), and if possible
below the level of the liquid or even lower with regard to the tank so that the static manometric suction head is at its maximum.
Place the suction and discharge piping in straight runs with a minimum of elbows and fittings in order to reduce to the greatest
extent possible any loss of head caused by friction. This improves the suction conditions, thereby providing maximum
performance of the pump.
Accessibility.
Place the pump so that access can be had to the pump and to the drive units so as to make inspections and revisions. Leave
sufficient space around the pump / pumping unit for proper inspection, separation of the pump from other units and for
maintenance operations. In order to disassemble the TLS pump you should leave sufficient space in front of and behind it.
(Chapter 9 deals with the dimensions).
Place the pump / pumping unit with sufficient space for the lifting equipment if the components or the total weight of the unit
exceed 22 kg.
Place the pump / pumping unit near the drain on the floor.
It is very important to be able to gain access to the pump or pumping unit connecting device (even when it is operating).

4. TLS Installation 4.2 ED.10.12/98
Weights.
Drive Pump without
drive Pump with drive
PUMP TYPE Power
[kW]
Speed
reducer type
MR
[Kg.]
MB
[Kg.]
MR
[Kg.]
MB
[Kg.]
0,55 37,5 31,5
0,75 SK 01/80 38,5 32,5
1,1 44,5 38,5
TLS 1 – 25
1,5 SK 01/90
20,5 14,5
48,5 42,5
0,75 SK 01/80 39,5 33,5
1,1 45,5 39,5
TLS 1 – 40
1,5 SK 01/90 21,5 15,5 49,5 43,5
1,1 56 49,5
1,5 SK 20/90 60 53,5
TLS 2 – 40
2,2 SK 20/100
28 21,5
63 56,5
1,5 SK 20/90 61,5 55
TLS 2 – 50 2,2 SK 20/100 29,5 23 64,5 58
2,2 110 100
3SK 25/100 115 105
TLS 3 – 50
4 SK 25/112
71 61
126 116
TLS 3 – 51 5,5 SK 33/132 71 61 155 145
3 SK 30/100 120 110
4 SK 30/112 131 121
TLS 3 – 80
5,5
74 64
158 148
TLS 3 – 81 7,5 SK 33/132 74 64 169 159
MR = shrouded pump.
MB = unshrouded pump.
Outdoor installation.
The TLS pump can only be installed out of doors if there is a roof covering it or, if permitted, a special installation is to be
made. Consult INOXPA prior to installation.
Indoor installation.
Place the pump so that the motor is properly ventilated. Prepare the motor to be started according to the instructions provided
by its manufacturer.
A suitable connection should be used when inflammable or explosive liquids are pumped. Connect the
components of the unit with grounding jumpers in order to reduce the danger from static electricity.
Use explosion-proof motors in accordance with local regulations.
Excessive temperatures.
Depending on the fluid to be pumped, high temperatures can be reached inside and around the pump.
Over 70º C, the operator should take protective measures and place warning notices advising of the
danger which exists if the pump is touched.
The type of protection selected should not isolate the pump entirely. It should allow for the bearings to
be cooled more efficiently and for the bearings to be lubricated.
STABILITY.
Foundation.
Prepare the foundation so that the pump is level and well supported. Its emplacement should be rigid, horizontal, flat and
resistant to vibrations, so as to avoid any warping (if the pump's alignment is maintained its operation is ensured during start-up).
Piping Installation
Piping can be installed horizontally and vertically, provided that the pump remains leveled.

ED.10.12/98 4. TLS Installation 4.3
HANDLING.
If the pump is supplied without a drive, the purchaser/user is responsible for the pump's start-up and
assembly.
Starting torque.
The starting torque of the positive displacement pumps is almost identical to the rated torque. Make sure that the motor's rated
torque is sufficiently high, but check that it does not exceed the maximum torque allowed on the pump shaft (see technical
specifications). Consequently, choose a motor with a capacity 25% greater than the power absorbed by the pump.
ELECTRIC MOTORS.
Regulations.
Prior to connecting an electric motor to the power supply, check local regulations on electrical safety and also refer to the EN
60204-1 standard.
Let qualified personnel perform the connection of electrical motors. Take the necessary steps to
prevent faults in the connections and wiring.
Automatic breaker.
In order to work on the pump without hazards, an automatic breaker should be installed as close as possible to the pump. The
use of a grounding switch is also recommended.
The pumps switch gear should comply with current regulations, as set forth in the EN 60204-1
standard on electrical safety.
Protection of the motor against overloads.
In order to protect the motor from overloads and short circuits, the use of thermal or magnetic relays is recommended. Adjust
these relays to maximum rated current values as indicated on the data plate of the motor.
Electrical diagram. Connection U=...
3x220 3x380
motor
220/380 ∆
380 -∆
Figure 4.2: TLS pump electrical connections

4. TLS Installation 4.4 ED.10.12/98
Connection.
Consult the supplier's instructions prior to connecting the motor to the power supply.
For single-phase motors, use motors with an increased starting torque.
Ensure a starting torque which is sufficiently high for motors controlled by a frequency converter, and provide for adequate
cooling at low speeds. If necessary, install an independent fan.
The electrical equipment, the terminals and the control system components can continue to carry
current when disconnected. Any contact with them can endanger the safety of the operators or cause
irreparable damage to the material.
SPEED VARIATORS AND REDUCERS.
If using speed variator or reducer in the pumping unit, consult the supplier's instruction manual, and the directives numbered
under the section "electric motors".
DIRECTION OF ROTATION.
The direction of rotation determines the location of the pump's suction and discharge mouths.
The standard rotation direction is clockwise looking from the rear end of the motor, displacing the fluid from right to left (see
figure 4.3).
However, it is easy to invert the rotating direction and therefore vary the fluid's flow direction.
Make sure that the pump rotates in the direction indicated on the plate. If the pump rotates in the
wrong direction it could cause serious damage.
Figure 4.3: direction of rotation
SUCTION AND DISCHARGE PIPES.
Excessive forces and moments on pump connections, caused by the piping, could result in mechanical damage to the pump or
pumping unit.
These pipes should be connected in a straight line, without leaving spaces between connections and the faces of parallel
connections. Provide for adequate anchoring devices and make sure that they are not tensed too much when the pump is
operating.
When hot liquids are pumped, pay attention to thermal expansion; if this is the case, use expansion joints.
Once the connection has been made, check that the shaft can turn freely.
Pipes.
Use pipes with a diameter which is equal to or greater than that of the pump's connections. If the liquid to be pumped is
viscous, the loss of head from the suction and discharge pipes can increase considerably. Other pipe components such as
valves, elbows, filters and foot valves, can also cause a loss of head.
For this reason, the diameters and the length of pipes and other components should be selected so as not to cause any
mechanical wear to the pump/pumping unit, operating within the minimum pressure limits allowed for the suction (refer to
NPSH graph), the maximum working pressure (refer to chapter 3, "Field of Application"), and without surpassing the rated
motor power.

ED.10.12/98 4. TLS Installation 4.5
Suction pipe.
Liquids should be introduced into the pump from a higher level than that of the pump; the pipe should be inclined in its path to
the pump and be devoid of air pockets.
A diameter which is too small, a suction pipe which is too long, or a filter that is too small or clogged,
will lead to a greater loss of head and thus the NPSH available (NPSHa) can become less than that
required (NPSHr). Cavitation may occur, causing noise and vibrations. Under such circumstances,
the pump or the pumping unit may be mechanically damaged.
If a filter is installed in the suction mouth, the loss of head in the suction pipe should be constantly checked. Also make sure
that the instake pressure at the suction mouth of the pump is sufficiently high (see NPSH).
When the pump is operating in both directions, the loss of head must be calculated for both
directions.
Check the tension of the suction pipe after its connection.
Self-priming process.
In general terms --if the self-priming process is followed-- the pump ought to contain sufficient liquid to fill the internal
recesses and the void spaces thus enabling the pump to create a pressure difference.
However, if low viscosity fluids are to be pumped, a foot valve of the same or greater diameter as that of the suction pipe
should be installed; alternatively, the pump can be installed with a "U" shaped piping.
The use of a foot valve is not recommended for pumping viscous liquids.
In order to eliminate air and gases from the suction pipe, the counter-pressure on the discharge pipe should be reduced. When
the self-priming process is used, the pump's start-up should be done by opening and emptying the discharge pipe which allows
the air and gases to escape at a low counter-pressure.
Another possibility involves long pipes or when a check valve is installed in the discharge pipe; it is also possible to install a
by-pass with a shut-off valve on the discharge side of the pump. This valve shall be opened in the case of priming and will
allow air and gases to escape at a minimum counter-pressure.
The by-pass should not lead back to the intake orifice but to the supply tank instead.
Figure 4.4: View of the self-priming process.

4. TLS Installation 4.6 ED.10.12/98
Shut-off valves.
For a proper maintenance, the pump should be isolated. This isolation can be obtained by installing shut-off valves in the
suction and discharge pipes of the pump.
These valves should be able to open completely, both for suction and for discharge, up to the full passage of suction and
discharge pipes (ball-valves or sluice valves are preferable).
When the pump is started up, the shut-off valves should be completely open.
The flow rate should never be regulated by closing the shut-off valve in the suction or
discharge pipe.
The flow rate is to be regulated by increasing or decreasing the pump's speed or by using a by-pass which re-directs the flow to
the supply tank.
Filters.
Foreign particles can seriously damage the pump. Avoid the entry of these particles by installing a filter.
When selecting a filter, bear the diameter of the screen openings in mind so that loss of head will be minimal. The filter
diameter should be three times greater than that of the suction pipe.
The filter should be placed in such a way that it does not interfere with maintenance and cleaning operations. Be sure that the
density of the liquids is appropriate and that they can be filtered easily.
Refer to Chapter 9 ("Technical Specifications") for information on the maximum frame permitted for foreign particles.

ED.10.12/98 5. TLS Start-Up 5.1
5. Start-Up.
GENERAL CONSIDERATIONS.
The pump can be started up so long as the instructions given in chapter 4 ("Installation") have been followed.
Prior to start-up, the persons responsible for the operation must be duly informed of the pump /
pumping unit's operation and the safety instructions. This instruction manual should be available to
personnel at all times.
Prior to start-up, check the pump or pumping unit for any possible failure. If a failure is found, the
plant foreman should be notified immediately.
Also consult the section "Dimensions" in chapter 9.
PRE-START-UP PROCEDURES.
•Prepare the motor or other drive for operating according to instructions provided by motor manufacturer.
•Check the electrical supply to see that it matches the motor nameplate rating.
•Make sure all product contact parts and seal parts are clean. If necessary dismantle and clean by hand (Follow instructions
of chapter 8).
•Check that the pump is protected from the ingress of foreign bodies are installed.
•The interior of the pump, the suction and the discharge pipes must be absolutely free of all foreign material.
•Check if all main and all piping is connected, tight and leak free.
•Remove the transport security of the oil plug of reducer.
•Check oil level of the pump. Add correct grade of oil as necessary to maintain level in centre of oil sight glass (in the case
of first start-up: pumps are shipped with oil in the gearbox, nevertheless this check may be skipped).
Do not overfill! See chapter “Maintenance”.
Prior to start-up, substitute the blind stopper for transportation, by the stopper of gases exit
supplied in a bag of plastic.
CLEANING.
Prior to start-up, check to see that the pipes and the pump are completely clean and devoid of weld
spatterings or other foreign particles.
Consult chapter 10 (cleaning and disinfection) on how to properly clean your TLS pump and the cleaning methods and liquids
which should be used.
START-UP.
•Completely open the shut-off valves in the suction and discharge pipes.
•If the liquid does not flow into the pump, fill it with the liquid to be pumped..
The pump should never rotate when empty.
•Check to see if the pump can be started up safely.
•Start the pump.
•Check to see whether the absolute intake pressure is sufficient, so that no vapour can be emitted inside the pump. Refer to the
curve for the minimum pressure required above the vapour pressure (NPSH).
•Control the discharge pressure.
A shut-off valve installed in the suction pipe should not be used to regulate the flow rate. It must
remain completely open during the pump's operation.

5. TLS Start-Up 5.2 ED.10.12/98
SAFETY VALVE.
The safety valve opening pressure setting is done in the INOXPA workshop. However, the valve's opening pressure depends on
the fluid to be pumped, its viscosity, its r.p.m......, and so before starting-up the pump, the operator ought to adjust the safety
valve's opening pressure.
The safety valve setting.
When the safety valve setting is not shown on a pump thus equipped, the valve has been adjusted tot he pump's maximum
operating pressure. The operator must check this by observing the position of the pressure nut (37). When the pressure nut is
situated at the lower end of its travel, the valve has been set at the pump's maximum pressure.
To obtain the correct opening pressure, the following procedure should be followed:
•Loosen the counternut (37A).
•Using a spanner, turn the pressure nut (37) to the left to reduce the spring tension, and thus obtain the required opening
pressure.
•If the correct opening pressure has been obtained, tighten the counternut (37A).
When checking the safety valve also make sure the pump's pressure will NEVER exceed the pressure
setting + 2 bar.
When the safety valve does not work properly, the pump must be taken out of service immediately.
The valve must be inspected by an INOXPA service technician.
Figure 5.1: Safety valve

ED.10.12/98 6. TLS Maintenance 6.1
6. Maintenance.
GENERAL CONSIDERATIONS.
Inadequate, wrong or improper maintenance could result in the faulty operation of the pump, high
repair costs, and breakdown in the long run. For this reason the instructions given in this chapter
should be followed.
During maintenance operations which are performed on the pump, whether due to inspections,
preventive maintenance or the movement of the installation, the procedures indicated should always be
followed.
Failure to comply with these instructions could endanger the operator and/or seriously damage the
pump or pumping unit. Maintenance work should only be done by qualified personnel. Wear
appropriate clothing which provides adequate protection against high temperatures and hazardous
and/or corrosive fluids. Make sure that the personnel read the entire instruction manual and, in
particular, indicate to them the chapters which refer to work which needs to be done. INOXPA does
not assume responsibility for accidents and damage which might occur as a result of any failure to
comply with the instructions indicated herein.
PREPARATION.
Work area.
Provide for a clean work area; some parts require very careful handling and others are machined to close tolerances.
Tools.
Use tools which are designed for the purpose for which they are to be used in maintenance and repair work. Use them properly.
Disconnection.
Before beginning maintenance and inspection work, disconnect the pump.
Decompress the pump and the pumping unit.
If the fluid to be pumped allows for it, let the pump cool down until it reaches room temperature.
Safety.
Do not let the motor start if work needs to be done on the pump. This is very important when electric motors are involved
which are started by remote control.
Follow the procedure outlined below:
•Place the pump switch in the "Off" position.
•Disconnect the pump from the power supply.
•Block the electrical control panel or put a warning notice on it.
•Remove the fuses and take them with you to the work area.
•Do not begin maintenance work until the pump has completely stopped.
CONSERVATION.
Should the pump be taken out of service for a long period of time:
•First of all, empty the pump.
•Apply VG46 mineral oil to the internal parts.
•The pump should be worked on for a brief period of time once a week or the shaft rotated manually. This ensures the
correct circulation of the protective oil.
EXTERNAL CLEANING.
Attempt to keep the exterior of the pump clean at all times. This helps in inspection work and keeps warning notices visible.
Make sure that cleaning products do not get into the motor's ball bearings. Cover all parts which should not enter into contact
with the cleaning fluid.
The cleaning products should not come into contact with the lip seals.
Do not spray hot parts of the pump with water as some components could crack due to quick cooling
and the fluid inside the pump could spill out.

6. TLS Maintenance 6.2 ED.10.12/98
ELECTRICAL INSTALLATION.
Maintenance work on electrical installations can only be done by qualified personnel and only when
the power supply has been cut off. Carefully follow national safety regulations.
Also abide by the regulations referred to above if you are working while the power supply is still connected.
Check to see whether the electrical materials to be cleaned are well protected (for example, IP 54
indicates protection against dust and water spray but does not include protection against pressure
water jets).
Refer to EN 60529. Choose an appropriate method of cleaning electrical materials.
Replace defective fuses with new ones having the prescribed amperage.
On finishing each maintenance operation, check the electrical installation components to see if they are defective and repair
them if necessary.
MAINTENANCE.
Periodically check suction and discharge pressures.
In general, a mechanical seal does not require any maintenance; however, the seal should never be made to work in dry state.
Should a leak occur, replace the seal.
OILING.
The gears and bearings are oiled by immersion in an oil bath (see table 6.1. to the quantity).
The pumps are supplied with oil. Before commissioning the pump, the oil sump must be filled up to the level in the middle of
the peephole.
DO NOT POUR TOO MUCH OIL INTO THE SUMP ! Leave the pump switched off for a while and then re-check the oil
level; if necessary, add a little oil. The first oil change must be carried out after 150 hours of operation. Afterwards, it can be
changed every 2500 operating hours or at least once a year when operating under normal conditions.
Regularly check the oil level, for example, weekly or every 150 operating hours.
Oils for environment temperatures of 5 to 50ºC: SAE 90 or ISO VG 220.
Table 6.1: quantity of oil in each support
Types Quantity of oil in
the support (l.)
TLS 1 0,75
TLS 2 1
TLS 3 2