Lutz-Jesco MEMDOS KMS LB User manual

Dosing
Conveying
Control
Liquids
Gases
Systems
Original operating instructions
© Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump
MEMDOS KMS LB/LA
Operating instructions
Read the operating manual!
The user is responsible for installation and operation related mis-
takes!
10490000_6
Bild BA MEMDOS KMS LB 14 E-Stahl/FPM
Deckblatt

Table of Contents 3
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200318
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
Table of Contents
1 Notes for the Reader ..........................................................4
1.1 General non-discrimination......................................................4
1.2 Explanation of the signal words ................................................4
1.3 Explanation of the warning signs ..............................................4
1.4 Identification of warnings.........................................................4
1.5 Identification of action instructions...........................................4
2 Safety ................................................................................. 5
2.1 General warnings.....................................................................5
2.2 Warnings for use within explosive-risk zones............................5
2.3 Hazards due to non-compliance with the safety instructions .....6
2.4 Working in a safety-conscious manner .....................................6
2.5 Personal protective equipment.................................................6
2.6 Personnel qualification.............................................................6
3 Intended use ......................................................................8
3.1 Notes on product warranty .......................................................8
3.2 Intended purpose.....................................................................8
3.3 Principles ................................................................................8
3.4 Prohibited dosing media...........................................................8
3.5 Foreseeable misuse.................................................................8
4 Product description .........................................................10
4.1 Properties..............................................................................10
4.2 Scope of delivery ...................................................................10
4.3 Structure MEMDOS KMS LB/LA..............................................10
4.4 Control elements MEMDOS KMS LA........................................11
4.5 Function description MEMDOS KMS LB/LA.............................11
4.6 Rating plate ...........................................................................12
5 Technical data.................................................................. 13
5.1 Delivery capacity data............................................................13
5.2 Operating conditions and limits ..............................................13
5.3 Other data .............................................................................14
5.4 Motor data.............................................................................14
5.5 AC drive 120 V or 230 V ..........................................................16
6 Dimensions ...................................................................... 17
6.1 MEMDOS KMS LB/LA.............................................................17
7 Installing the Dosing Pump.............................................. 18
7.1 Set up information .................................................................18
7.2 Installation on a wall console..................................................18
8 Hydraulic installations.....................................................19
8.1 Design of the system..............................................................19
8.2 General installation ................................................................20
8.3 System piping........................................................................20
8.4 Suction and pressure valves...................................................20
8.5 Hydraulic accessories ............................................................20
9 Electrical installation .......................................................22
9.1 Drive motor connection..........................................................22
9.2 Description of connection sockets MEMDOS KMS LA ..............23
10 Control..............................................................................25
10.1 Stroke length adjustment.....................................................25
10.2 Vent the dosing head............................................................25
10.3 Controllable safety valve of the dosing head..........................25
10.4 Operating panel MEMDOS KMS LA .......................................26
10.5 General................................................................................26
10.6 Operating modes .................................................................26
10.7 Extended functions ..............................................................27
10.8 The status of the pump.........................................................27
10.9 Error messages ...................................................................28
11 Operation..........................................................................30
11.1 Commissioning the dosing pump..........................................30
11.2 Adjusting the delivery rate....................................................31
11.3 Decommissioning the dosing pump......................................31
11.4 Shutting down in an emergency ...........................................32
11.5 Storage ...............................................................................32
11.6 Transportation......................................................................32
11.7 Disposal of old equipment....................................................32
12 Maintenance ....................................................................33
12.1 Maintenance intervals..........................................................33
12.2 Change the oil......................................................................34
12.3 Tightening the dosing head nuts...........................................34
12.4 Diaphragm replacement ......................................................35
12.5 Changing the ball valves.......................................................36
12.6 Changing the poppet valves .................................................36
13 Troubleshooting ...............................................................37
13.1 Type of fault .........................................................................37
14 Spare parts.......................................................................39
15 Delivery characteristic curves.........................................40
16 EU Declaration of Conformity...........................................42
17 Declaration of no objection..............................................43
18 Warranty claim.................................................................44
19 Index.................................................................................45

Notes for the Reader
4© Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
1 Notes for the Reader
This operating manual contains information and behaviour rules to en-
sure safe and intended operation of the dosing pump MEMDOS KMS LB/
LA.
Observe the following principles:
nRead the entire operating manual prior to starting-up the device.
nEnsure that everyone who works with or on the dosing pump has read
the operating instructions and follows them.
nKeep the operating instructions for the entire service life of the dosing
pump.
nPass on the operating instructions to any subsequent owner of the
dosing pump.
1.1 General non-discrimination
In this operating manual, only the male gender is used where grammar
allows gender allocation. The purpose of this is to make the text easy to
read. Men and women are always referred to equally. We would like to
ask female readers for understanding of this text simplification.
1.2 Explanation of the signal words
Different signal words in combination with warning signs are used in this
operating manual. Signal words illustrate the gravity of possible injuries if
the risk is ignored:
Signal word Meaning
DANGER! Refers to imminent danger. Ignoring this sign may
lead to death or the most serious injuries.
WARNING
Refers to a potentially hazardous situation. Failure
to follow this instruction may lead to death or
severe injuries.
CAUTION!
Refers to a potentially hazardous situation. Failure
to follow this instruction may lead to minor injury
or damage to property.
PLEASE NOTE Refers to a danger which, if ignored, may lead to
risk to the machine and its function.
Tab. 1: Explanation of the signal words
1.3 Explanation of the warning signs
Warning signs represent the type and source of a danger:
Warning sign Type of danger
General danger zone
Danger of electric shock
Danger of caustic or other burns
Danger of explosions
Danger of electromagnetic radiation
Danger of automatic start up
Danger of damage to machine or functional
influences
Tab. 2: Explanation of the warning signs
1.4 Identification of warnings
Warnings are intended to help you recognise risks and avoid negative
consequences.
This is how warnings are identified:
Warning sign SIGNAL WORD
Description of danger.
Consequences if ignored.
ðThe arrow signals a safety precaution to be taken to eliminate the
danger.
1.5 Identification of action instructions
This is how pre-conditions for action are identified:
ü
Pre-condition for action which must be met before taking action.
@A resource such as a tool or auxiliary materials required to perform
the operating instructions.
This is how instructions for action are identified:
èSeparate step with no follow-up action.
1. First step in a series of steps.
2. Second step in a series of steps.
4Result of the above action.
ü
Action completed, aim achieved.

Safety 5
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200318
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
2 Safety
2.1 General warnings
The following warnings are intended to help you to eliminate the dangers
that can arise while handling the dosing pump. Risk prevention measures
always apply regardless of any specific action.
Safety instructions warning against risks arising from specific activities
or situations can be found in the respective sub-chapters.
DANGER!
Mortal danger from electric shock!
Wrongly connected or located cables or damaged ones can injure you.
ðOnly connect the device to an earthed power supply.
ðReplace damaged cables without delay.
ðDo not use extension cables.
ðDo not bury cables.
ðSecure cables to avoid being damaged by other equipment.
WARNING
Danger from unsuitable materials
The materials of the dosing pump and hydraulic parts of the system
must be suitable for the dosing medium that is used. Should this not be
the case, the dosing media may leak.
ðMake sure that the materials you are using are suitable for the dos-
ing medium.
ðMake sure that the lubricants, adhesives,sealants, etc.that you use
are suitable for the dosing medium.
WARNING
Danger of automatic start up!
After connecting the mains supply, residual dosing media in the dosing
head can spray out.
ðBefore connecting the mains supply, connect the dosing lines.
ðCheck that all the screw connections have been tightened correctly
and are leak-proof.
WARNING
Caustic burns or other burns through dosing media!
While working on the dosing head, valves and connections, you may
come into contact with dosing media.
ðUse sufficient personal protective equipment.
ðRinse the dosing pump with a liquid (e. g. water) which does not
pose any risk. Ensure that the liquid is compatible with the dosing
medium.
ðRelease pressure in hydraulic parts.
ðNever look into open ends of plugged pipelines and valves.
CAUTION!
Danger when changing the dosing medium!
Changing the dosing media can provoke unexpected reactions, dam-
age to property and injury.
ðClean the dosing pump and the system parts in contact with the
media thoroughly before changing the dosing medium.
CAUTION!
Increased risk of accidents due to insufficient qualifica-
tion of personnel!
Dosing pumps and their accessories may only be installed, operated
and maintained by personnel with sufficient qualifications. Insufficient
qualification will increase the risk of accidents.
ðEnsure that all action is taken only by personnel with sufficient and
corresponding qualifications.
ðPrevent access to the system for unauthorised persons.
2.2 Warnings for use within explosive-risk zones
ATEX certified versions of the dosing pump can be used in explosive risk
areas. The following warnings only apply for use in such areas:
DANGER!
Danger to life through explosions!
Explosions may result which could result in fatal injuries.
ðUse only ATEX certified versions of the dosing pump in explosive
risk areas (check the information on the ratings plate for this).

Safety
6© Lutz-Jesco GmbH 2020
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Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
DANGER!
Danger to life from electrostatic charge!
Static electricity in explosive risk areas can build up when dosing flam-
mable liquids. Explosions may result which could result in fatal injuries.
ðEarth the dosing pump, drive motor and all metal parts along the
suction and pressure piping route.
ðOnly use dosing heads made of stainless steel.In exceptional cases,
carbon-filled PTFE dosing heads are also possible. For this, contact
Lutz-Jesco GmbH.
2.3 Hazards due to non-compliance with the safety
instructions
Failure to follow the safety instructions may endanger not only persons,
but also the environment and the device.
The specific consequences can be:
nfailure of vital functions of the dosing pump and the system,
nFailure of required maintenance and repair methods,
nDanger for individuals through dangerous dosing media,
ndanger to the environment caused by substances leaking from the
system.
2.4 Working in a safety-conscious manner
Besides the safety instructions specified in this operating manual, further
safety rules apply and must be followed:
naccident prevention regulations
nSafety and operating provisions
nsafety provisions for handling dangerous substances (mostly the safe-
ty data sheets to dosing media),
nEnvironmental protection provisions,
napplicable standards and legislation.
2.5 Personal protective equipment
Based on the degree of risk posed by the dosing medium and the type of
work you are carrying out, you must use corresponding protective equip-
ment. Read the Accident Prevention Regulations and the Safety Data
Sheets to the dosing media find out what protective equipment you need.
You will require the minimum of the following personal protective equip-
ment:
Personal protective equipment required
Protective goggles
Tab. 3: Personal protective equipment required
Personal protective equipment required
Protective clothing
Protective gloves
Tab. 3: Personal protective equipment required
Wear the following personal protective equipment when performing the
following tasks:
nCommissioning,
nworking on the dosing pump while running,
nShut-down,
nMaintenance work,
nDisposal.
2.6 Personnel qualification
Any personnel who work on the dosing pump must have appropriate spe-
cial knowledge and skills.
Anybody who works on the dosing pump must meet the conditions below:
nAttendance at all the training courses offered by the owner,
nPersonal suitability for the respective activity,
nsufficient qualification for the respective activity,
nTraining in handling of the dosing pump,
nknowledge of safety equipment and the way this equipment functions,
nknowledge of this operating manual, particularly of safety instructions
and sections relevant for the activity,
nKnowledge of fundamental regulations regarding health and safety
and accident prevention.
All persons must generally have the following minimum qualification:
nTraining as specialists to carry out work on the dosing pump unsuper-
vised,
nSufficient training that they can work on the dosing pump under the
supervision and guidance of a trained specialist.
These operating instructions differentiate between these user groups:
2.6.1 Specialist staff
Thanks to their professional training, knowledge, experience and knowl-
edge of the relevant specifications, specialist staff are able to perform the
job allocated to them and recognise and/or eliminate any possible dan-
gers by themselves.

Safety 7
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200318
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
2.6.2 Trained electricians
Due to their professional training, knowledge and experience as well as
knowledge of specific standards and provisions, trained electricians are
able to do the electrical work assigned to them and to recognise and
avoid any potential dangers by themselves.
They are specially trained for their specific working environment and are
familiar with relevant standards and provisions.
They must comply with the legally binding regulations on accident pre-
vention.
2.6.3 Trained electricians with additional qualification for
explosion protection
Trained electricians with additional qualification for explosion protection
fulfil the criteria to act as a competent person to meet all the special re-
quirements needed when working in explosive risk areas.
They are specially trained for their work environment in explosive risk ar-
eas and know all the relevant standards and regulations.
Above all, they have the required specialist knowledge about explosion
protection like, for example, ignition protection classes, flash points, den-
sity ratios, zoning, device categories, temperature classes etc.
2.6.4 Trained persons
Trained persons have received training from the operator about the tasks
they are to perform and about the dangers stemming from improper be-
haviour.
In the table below you can check what qualifications are the pre-condi-
tion for the respective tasks. Only people with appropriate qualifications
are allowed to perform these tasks!
Qualification Activities
Specialist staff nAssembly
nHydraulic installations
nMaintenance
nRepairs
nCommissioning
nTaking out of operation
nDisposal
nFault rectification
Trained electricians nElectrical installation
nInstalling the electric servomotor
nRectifying electrical faults
Trained electricians
with additional
qualification for
explosion protection
nElectrical installation in explosive risk ar-
eas
nFault rectification in explosive risk areas
Trained persons nStorage
nTransportation
nControl
nFault rectification
Tab. 4: Personnel qualification

Intended use
8© Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
3 Intended use
3.1 Notes on product warranty
Any non-designated use of the product can compromise its function or
intended protection. This leads to invalidation of any warranty claims!
Please note that liability is on the side of the user in the following cases:
nThe dosing pump is operated in a manner which is not consistent with
these operating instructions, particularly safety instructions, handling
instructions and the section "Intended Use".
nif people operate the product who are not adequately qualified to carry
out their respective activities.
nno original spare parts or accessories of Lutz-Jesco GmbH are used.
nUnauthorised changes are made to the device.
nThe user uses different dosing media than those indicated in the or-
der.
nThe user does not use dosing media under the conditions agreed with
the manufacturer such as modified concentration, density, tempera-
ture, contamination, etc.
3.2 Intended purpose
The dosing pump MEMDOS KMS LB/LA is intended for the following pur-
pose: the conveying and dosing of liquids.
3.3 Principles
nBefore delivery, the manufacturer inspected the dosing pump and op-
erated it under specific conditions (with a specific dosing medium
with a specific density and temperature, with specific pipe dimen-
sions, etc.) Since these conditions differ at every location of usage,
the delivery capacity of the dosing pump should be measured by
gauging it at the operating company's installation. For details on the
approximate values and the capacity of the dosing pump, refer to the
chapter 15 „Delivery characteristic curves“ on page 40.
nComply with the information regarding the operating and environmen-
tal conditions (see chapter 5 „Technical data“ on page 13).
nAny restrictions regarding the viscosity, temperature and density of
dosing media must be followed. You must only use dosing media at
temperatures above freezing point or below the boiling point of the re-
spective medium.
nThe materials of the dosing pump and hydraulic parts of the system
must be suitable for the dosing medium that is used. In this connec-
tion, note that the resistance of these components can change in de-
pendence on the temperature of the media and the operating pres-
sure.
i
Information on the suitability of materials combined with
different dosing media can be found in the Compatibility Chart
of Lutz-Jesco GmbH.
The information in this resistance list is based on information
from the material manufacturers and on expertise obtained by
Lutz-Jesco from handling the materials.
As the durability of the materials depends on many factors,
this list only constitutes initial guidance on selecting material.
In all cases, test the equipment with the chemicals you use
under operating conditions.
nThe dosing pump is not intended for outdoor use unless appropriate
protective measures have been taken.
nAvoid leaks of liquids and dust into the casing and avoid direct expo-
sure to sunlight.
nYou must never operate dosing pumps in a potentially explosive at-
mosphere if they do not have corresponding nameplates or an appro-
priate EC Declaration of Conformity for potentially explosive atmos-
pheres.
3.4 Prohibited dosing media
The dosing pump must not be used for these media and substances:
nGaseous media
nRadioactive media
nSolid substances
nFlammable media, if adequate protective measures are not taken
nAll other media that are not suitable for delivery using this dosing
pump
3.5 Foreseeable misuse
Below, there is information about the applications of the dosing pump or
associated equipment that are not considered to be intended use. This
section is intended to allow you to detect possible misuse in advance and
to avoid it.
Foreseeable misuse is assigned to the individual stages of the product
lifetime:
3.5.1 Incorrect assembly
nUnstable or unsuitable bracket
nDosing pump bolted wrongly or loosely

Intended use 9
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200318
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
3.5.2 Incorrect hydraulic installation
nSuction and pressure lines dimensioned incorrectly
nUnsuitable connection of the pipes due to wrong material or unsuita-
ble connections.
nSuction and pressure lines mixed-up
nDamage to threads due to them being tightened too much
nBending of pipelines
nNo free return flow of the pressure relief valve
nExcessive demand due to the pressure differences between the suc-
tion and pressure valves
nThrough-suction at installation without back-pressure valves
nDamage due to undamped acceleration mass forces
nExceeding the admissible pressure on the suction and discharge sides
nUsing damaged parts
3.5.3 Incorrect electrical installation
nConnecting the mains voltage without a protective earth
nUnsecured mains or one that does not conform to standards
nNot possible to immediately or easily disconnect the power supply
nWrong connecting cables for mains voltage
nDosing pump accessories connected to wrong sockets
nProtective earth removed
3.5.4 Incorrect start-up
nStart-up with damaged system
nShut-off valves closed at commissioning
nClosed suction or pressure line, e.g. due to blockages
nPersonnel was not informed before the start-up
nSystem was recommissioned after maintenance without all the pro-
tective equipment and fixtures, etc. being reconnected.
nInadequate protective clothing or none at all
3.5.5 Incorrect operation
nProtective equipment not functioning correctly or dismantled
nModification of the dosing pump without authority
nIgnoring operational disturbances
nElimination of operational disturbances by personnel without ade-
quate qualifications
nDeposits in the dosing head due to inadequate purging, particularly
with suspensions
nBridging the external fuse
nOperation made more difficult due to inadequate lighting or machines
that are difficult to access
nDelivery of dosing media for which the system is not designed
nDelivery of particulate or contaminated dosing media
nInadequate protective clothing or none at all
nIf the pump is operated with a blocked suction line, cavitation occurs,
which eventually leads to a rupture of the hose-diaphragm.
nDo not operate the pump with low or no back pressure. If the back
pressure is too low, the hose diaphragm will not return to its original
position. This event stretches the diaphragm to a point at which it
bursts.
3.5.6 Incorrect maintenance
nCarrying out maintenance during ongoing operation
nCarrying out work that is not described in the operating manual
nNo adequate or regular inspection of correct functioning
nNo replacement of damaged parts or cables with inadequate insula-
tion
nNo securing against reactivation during maintenance work
nUsing cleaning materials that can cause reactions with the dosing
media
nInadequate cleaning of the system
nUnsuitable purging medium
nUnsuitable cleaning materials
nDetergents left in system parts
nUsing unsuitable cleaning equipment
nUsing the wrong spares or lubricants
nContaminating the dosing medium with lubricant
nInstalling spare parts without following the instructions in the operat-
ing manual
nBlocking venting orifices
nPulling off sections of the plant
nContamination at installation without a dirt trap
nMixing up the sensor lines
nNot reconnecting all the lines
nDamaging or not installing all the seals
nNot renewing seals
nNot paying attention to safety data sheets
nInadequate protective clothing or none at all
3.5.7 Incorrect decommissioning
nNot completely removing the dosing medium
nDismantling lines while the dosing pump is running
nDevice not disconnected from the power supply
nUsing the wrong dismantling tools
nInadequate protective clothing or none at all
3.5.8 Incorrect disposal
nIncorrect disposal of dosing media, operating resources and other
materials
nNo labelling of hazardous substances

Product description
10 © Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
4 Product description
4.1 Properties
The MEMDOS KMS LB/LA is a dosing pump with hydraulically deflected
diaphragm.
They are characterized by the following properties:
n Performance range of 14 to 700 l/h with a backpressure of
10–200bar
nReproducible dosing precision of ± 1 %
nStroke length manually adjustable between 0 % and 100 %
nStainless steel dosing heads
nCSM and FPM seals available
nSuitable for highly aggressive or poisonous dosing media,
nProtected against overpressure through integrated safety valve
nMEMDOS KMS LA with additional features:
nStroke frequency settable 0 – 100% using the potentiometer
nOperation of the pump via the operating panel
nSignal LEDs for status, operating and error display
nClearance input for external start/stop
nAnalogue input and output: 0/4–20mA
nLevel input with main alarm
nAlarm relay output
nStroke feedback output
4.2 Scope of delivery
Please compare the delivery note with the scope of delivery. The follow-
ing items are part of the scope of delivery:
nDosing pump MEMDOS KMS LB/LA
nOperating instructions
nOil container
nInspection report and test certificate (optional)
nAccessory kit (optional)
4.3 Structure MEMDOS KMS LB/LA
Fig. 1: Overview dosing pump MEMDOS KMS LB/LA
Item Description
1Drive motor
2Stroke length adjustment
3Oil inlet
4Oil level glass
5Oil drain
6Connection discharge side
7Dosing head ventilation
8Connection suction side
9Control (only LA)
Tab. 5: Designation of components
1
3
2
4
6
7
8
5
9

Product description 11
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200318
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Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
4.4 Control elements MEMDOS KMS LA
1
3
2
4
4
Fig. 2: Control elements
Item Description
1multifunction buttons
2Power supply connection
3 Potentiometer
4Connection sockets for external operation or connecting
accessories
Tab. 6: Designation of the control elements
4.5 Function description MEMDOS KMS LB/LA
10490000
Bild BA MEMDOS KMS LB 14
4.4 Funktionsbeschreibung
1
8
9
6
3
4
5
7
2
Fig. 3: Cross section MEMDOS KMS LB/LA dosing head (left: suction stroke, right: pressure
stroke)
No. Description
1Connecting rod
2Hose diaphragm
3Pressure valve
4Discharge opening
Tab. 7: Pos. numbers dosing head MEMDOS KMS LB/LA
No. Description
5Slide valve
6Suction valve
7 Piston
8 Reservoir
9 Oil
Tab. 7: Pos. numbers dosing head MEMDOS KMS LB/LA
Dosing units for the dosing of liquids are usually dosing pumps with an
oscillating or rotating displacement body. The MEMDOS KMS LB/LA
works with an oscillating piston driven via a worm gear by an electrical
motor. The worm gear and the hydraulic system of the pump are operated
using the same oil (9).
An eccentric in the pump housing is put into rotation by a worm gear. The
eccentric is connected with the piston (7) via a connecting rod (1) and
converts the rotation movement of the motor into an oscillating move-
ment of the piston. If the piston moves downwards, the hydraulic fluid in
the pump is pressurized. This stretches the hose diaphragm (2) and the
medium in the dosing head is pressed out via the pressure valve (3). The
piston is equipped with an axial flow opening at its lower end; this con-
cludes in a radial discharge opening (4) at its upper end. A downwards
piston movement following a set partial stroke (stroke adjustment unit)
works to displace the hydraulic fluid through the flow opening into the
reservoir (8) next to the piston. The actual delivery rate is set via a slide
valve (5) which is positioned vertically using a control rod. As long as the
radial opening in the piston is not covered by the slide valve, the dis-
placed hydraulic fluid moves upwards, back through the flow opening
into the hydraulic fluid chamber and no process fluid is transported. If the
piston moves downwards whilst the radial opening is covered by the slide
valve, hydraulic fluid cannot escape through this opening and the hose di-
aphragm will be stretched to its maximum extent. If the piston reaches its
lower end position and starts to return upwards, the hose diaphragm will
relax to its original position. The resulting negative pressure in the dosing
head effects suction of the process fluid through the suction valve (6). The
hose diaphragm returns from its extension to a fixed position with every
stroke. This position represents a perforated support pipe, which secures
unchanging accuracy by maintaining the end position of the diaphragm. If
the piston reaches the upper end position, a pump cycle has been com-
pleted and the next cycle can begin. The hydraulic reservoir and the dos-
ing head are designed to remove any developing gas bubbles (foam) with
every stroke. This is achieved in the pump housing by the ability of the
gas bubbles to rise through the piston into the chamber. In the dosing
head itself, the opening of the flow channel rises continually to the pres-
sure valve without impediments for the gas bubbles. To fill and vent the
hydraulic system with every stroke, the upper position of the slide valve is
applied in such a way that the radial opening in the piston is opened for a
certain part of the piston movement.

Product description
12 © Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
4.6 Rating plate
There is information on the equipment about safety or the product's way
of functioning. The information must stay legible for the duration of the
service life of the product.
Material:
Max. XXX
Max. XXX
Max.
IP XX, XXX V AC, XXXX Hz
XX/XXXX
S/N: XXXXXXXXXX
P/N:
Made in
Germany
*102A12345678*
*12345678012345*
MEMDOS KMS
Lutz-Jesco GmbH 30900 Wedemark
Am Bostelberge 19 Germany
8
13
12
11
2
3
4
5
6
9 10
1
7
T
Fig. 4: Rating plate MEMDOS KMS LB/LA
No. Description
1Product name
2Material of the dosing head / seals
3Maximum delivery capacity at maximum pressure at 50 Hz
4Maximum delivery capacity at maximum pressure at 60 Hz
5Maximum back pressure
6Protection class
7Voltage supply
8 Frequency
9Label showing conformity with applicable European directives
10 WEEE label
11 Serial number
12 Part number
13 Month/year of manufacture
Tab. 8: Rating plate

Technical data 13
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200318
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
5 Technical data
Please note that some of this data only represents guide values. The actual capacity of a dosing pump depends on various factors.
5.1 Delivery capacity data
MEMDOS KMS LB/LA 14 20 30 60 100 140 200 285 400 320 500 700
Delivery capacity at max. back-
pressure l/h 13.5 21 29.4 63.5 98.8 138 203 284 396 320.9 499.2 697
max. delivery pressure bar 200 50 20 10
Max. stroke frequency rpm 83 130 181 83 130 181 83 130 181 83 130 181
Suction lift for
non-gassing media mWs 2
Tab. 9: Delivery capacity data MEMDOS KMS LB/LA
5.2 Operating conditions and limits
MEMDOS KMS LB/LA 14 20 30 60 100 140 200 285 320 400 500 700
Approved ambient temperature °C 5 – 80*
Relative humidity %max. 90
Max. sound pressure level dB(A) 57 – 65
Max. supply pressure mbar 500
Viscosity limits mPa∙s 300** / 1000***
Adjustable dosing range %0 – 100
Tab. 10: Operating conditions and limits MEMDOS KMS LB/LA
* Use of the dosing pump at ambient temperatures below 5 °C must be checked individually. In such cases, please contact the manufacturer.
** With a viscosity of ~300 mPa∙s and above, you must use spring-loaded valves.
*** If the viscosity is above 1000 mPa·s, this must be checked individually and the stroke frequency must be between 50 and 100 strokes/min.

Technical data
14 © Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
5.3 Other data
MEMDOS KMS LB/LA 14 20 30 60 100 140 200 285 400 320 500 700
Weight kg 49 51.6 56.6 64.6
Diameter of the piston Inch 1/2 1 1 1/2 2
Stroke length mm 20
Protection class IP55
Nominal valve width DN10 DN15 DN20 DN30
Tab. 11: Other data MEMDOS KMS LB/LA
5.4 Motor data
5.4.1 400V /230V three-phase motors
MEMDOS KMS LB 14 20 30 60 100 140 200 285 400 320 500 700
Power output kW
50 Hz 0.75
60 Hz 0.86
Speed rpm
50 Hz 1400
60 Hz 1700
Nominal current A
50 Hz 1.8
60 Hz 1.72
Voltage V3~
50 Hz 400 / 230
60 Hz 460 / 270
Mains voltage DIN EC 60038
Frequency Hz 50 / 60
Operating mode S1
Protection class IP55
Insulation class F
Size 80
Flange Diameter mm 120
Shaft mm 19 x 40
Cooling IC 411
Weight kg 13
Tab. 12: 400V /230V three-phase motors MEMDOS KMS LB

Technical data 15
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200318
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
5.4.2 400V /230V three-phase motors with frequency converter
MEMDOS KMS LB 14 20 30 60 100 140 200 285 400 320 500 700
Power output kW 50 Hz 1.10
60 Hz 1.30
Speed rpm 50 Hz 1440
60 Hz 1740
Nominal current A50 Hz 2.43
60 Hz 2.35
Voltage V3~ 50 Hz 400 / 230
60 Hz 460 / 270
Mains voltage DIN EC 60038
Frequency Hz 50 / 60
Operating mode S1
Protection class IP55
Insulation class F
Size 80
Flange Diameter mm 120
Shaft mm 19 x 40
Cooling IC 411
Weight kg 13
Tab. 13: 400V /230V three-phase motors with frequency converter MEMDOS KMS LB
5.4.3 230V / 120V alternating current motors with operating capacitor
MEMDOS KMS LB 14 20 30 60 100 140 200 285 400 320 500 700
Power output kW 0.75
Speed rpm 50 Hz 1440
60 Hz 1680
Nominal current A50 Hz 5
60 Hz 11.1
Voltage V1~ 230 / 120
Mains voltage DIN EC 60038
Frequency Hz 50 / 60
Operating mode S1
Protection class IP55
Insulation class F
Size 80
Flange Diameter mm 120
Shaft mm 19 x 40
Cooling IC 411
Weight kg 13
Tab. 14: 230V / 120V alternating current motors with operating capacitor MEMDOS KMS LB

Technical data
16 © Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
5.5 AC drive 120 V or 230 V
MEMDOS KMS LA 14 20 30 60 100 140 200 285 400 320 500 700
Power output kW 1.10
Speed rpm 1500
Nominal current Amax. 9.2
Voltage V1~ 208 / 230
Mains voltage DIN EC 60033
120 V (208 V) version CSA and UL certified
Frequency Hz 50 / 60
Operating mode S1
Protection class IP55
Insulation class F
Size 80
Flange Diameter mm 120
Shaft mm 19 x 40
Cooling IC 411
Weight kg 17
Electrical cable m1.8 m (with mains plug)
Tab. 15: AC drive 120 V or 230 V MEMDOS KMS LA

Dimensions 17
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200318
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
6 Dimensions
All dimensions in mm
6.1 MEMDOS KMS LB/LA
568
A
B
1021
785
210
250
272
308
Ø13,5
Fig. 5: Dimensional drawing MEMDOS KMS LB/LA
Size dosing head A B
0,5" 325.2 438.3
1" 305.9 458.2
1,5" 271.7 453.2
2" 224.2 401.7
Tab. 16: Dimensions MEMDOS KMS LB/LA

Installing the Dosing Pump
18 © Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
7 Installing the Dosing Pump
DANGER!
Mortal danger from electric shock!
Electrically conductive liquid can enter pump housings, cable screw
connections and mains connectors.
ðMake sure that all protective measures comply at least with the
requirements of protection class IP65.
ðAlways set up the dosing pump such that water cannot enter the
housing.
CAUTION!
Danger of personal injury and material damage!
A dosing pump that is difficult to access represents a danger due to
incorrect operation and faulty maintenance.
ðInstall the dosing pump such that it is accessible at all times.
7.1 Set up information
When installing, follow the basic principles below:
nThe dosing heads are standardly fitted in a certain direction (see Fig.
5: Dimensional drawing MEMDOS KMS LB/LA“ on page 17). The
1.5“ and 2“ dosing heads can also be fitted in the opposite direction.
nYou should install the dosing pump at a convenient height for opera-
tion.
nIt must not be fitted to a wall without a wall console.
nThe frame of foundation for fixing the dosing pump must not be sub-
jected to jolts. The pump must be vibration-free and stable.
nThere must be enough free space in the area of the dosing head and
the suction and pressure valves for these parts to be easily disman-
tled if required. The entire space requirement for installation and
maintenance is approximately 1 m².
nThe distance from the sides of the dosing pump to the wall or other
dosing pumps or equipment must be at least 3 cm. There must be a
guaranteed flow of circulating air.
nThe maximum ambient temperature must be complied with, see
chapter 5.2 „Operating conditions and limits“ on page 13. If neces-
sary, radiant heat from surrounding equipment must be screened.
nAvoid exposure to direct sunlight.
nThe dosing pump is not intended for use out of doors unless appropri-
ate protective measures have been taken to prevent dust and water
from entering the housing.
nFor the dimensions of the fastening holes, refer to chapter 6 „Dimen-
sions“ on page 17.
nInstall the dosing pump on a level surface.
7.2 Installation on a wall console
If necessary, the dosing pump can be mounted on a wall bracket or a
base. To this end, the MEMDOS KMS LB/LA is fitted with a fixture (1) on
the rear, offset edge. This means that the pump can be fixed to a suitable
surface or bracket with two M10 screws.
Fig. 6: Installation on a wall console
Fig. 7: Dimensional drawing installation on a wall console
10490000_1
Bild BA MEMDOS KMS LB 14
7.2 Montage auf Wandkonsole
1
1
10490000_1
Bild BA MEMDOS KMS LB 14
7.2 Montage auf Wandkonsole
160
M10
27

Hydraulic installations 19
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200318
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
8 Hydraulic installations
In this chapter, you will find information about the hydraulic parts of a
system that you should install or that can install additionally. In many cas-
es, you must install hydraulic accessories to be able to guarantee func-
tional safety or to achieve a high level of dosing precision.
WARNING
Caustic burns or other burns through dosing media!
A diaphragm rupture, blocked pressure lines or the use of material not
suitable for the dosing medium can result in the discharge of dosing
medium. Depending on the type and hazardousness of the dosing me-
dium, this can result in injury.
ðWear the recommended personal protective equipment.
ðMake sure that the materials you are using are suitable for the dos-
ing medium.
ðMake sure that the lubricants, adhesives,sealants, etc.that you use
are suitable for the dosing medium.
ðInstall a leakage drain.
ðInstall pressure relief valves.
CAUTION!
Danger of personal injury and material damage!
High peak pressures can lead to piping vibrating and cause them to
snap. This can result in injury from piping or escaping dosing media.
ðInstall pulsation dampeners.
PLEASE NOTE
Damage to drives due to overloading
The pressure conditions between the suction and discharge sides must
be balanced; otherwise, overloading can result.This can lead to uncon-
trolled dosing processes and damage to the piping as well as to the
dosing pump.
ðEnsure that the pressure on the discharge side is at least 1 bar than
on the suction side.
PLEASE NOTE
Locking of threads
Stainless steel and plastic parts (particularly those made of PVC) that
are bolted together in a detachable connection (e.g. the dosing head
and the valves) can lock. This makes them difficult to release.
ðBefore bolting, grease the corresponding parts with a lubricant (e.g.
PTFE spray). Ensure that the lubricant is compatible with the dosing
medium.
Warning notice for installation in an explosive risk zone:
DANGER!
Danger to life through explosions!
Systems without a pressure relief valve fitted produce an increased
safety risk in an explosive risk zone. Explosions could occur if system
parts heat up during an overload or by sparks which may be created if
drive parts were to break.
ðInstall a pressure relief valve on the pressure side of the dosing
pump.
8.1 Design of the system
nThe dosing pumps technical data (see chapter 5 „Technical data“ on
page 13) must be taken into account and the plant s layout must
be set up appropriately (e.g. pressure loss when rating the lines with
regard to their nominal diameter and length).
nThe entire system and its integrated dosing pump must be designed
in such a way that an escaping dosing medium (due to the failure of
wearing parts such as the diaphragm, or burst hoses) does not lead to
permanent damage to system parts or the premises.
nIf you use hazardous dosing media, the installation must be designed
such that no disproportionately high consequential damages arise
due to dosing media escaping.
nTo avoid dosing errors after the end of the process, the dosing pump
must be locked hydraulically.
nTo allow you to easily inspect the pressure conditions in the system,
you should provide connections for pressure gauges close to the suc-
tion and pressure valves.

Hydraulic installations
20 © Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump MEMDOS KMS LB/LA Operating instructions
8.2 General installation
nAll piping must be fixed. The system piping must not exert any force
on the connections and valves of the dosing pump.
nClean and blow out all piping before connecting the piping to the
pump.
nApply pipe sealant economically and only to the external threads.
nDo not connect pipes whilst the dosing head connections are connect-
ed to the pump.
nThe suction line may not be smaller than the pump connections.
nThe suction line should be straight and maintained as short as possi-
ble. It should also be fitted with the minimum possible number of
bends, T-pieces and other fittings.
nTo ensure easier pump maintenance, we recommend installing shut-
off valves: Do not install a shut-off valve between the pressure con-
nection and the system pressure control valve.
nInstalling a screen in front of the suction line provides protection
against foreign bodies.
nThe process system requires a separate safety valve to protect it
against excessive pressure. You should maintain an adequate safety
factor in plastic piping systems.
nThe installation of a bypass valve facilitates venting when starting a
pump, in order to permit the re-circulation procedure of the fluid back
to the tank.
8.3 System piping
nThis means that steel piping should be connected to the dosing pump
via flexible pipe sections.
nThe nominal diameters of the pipework and the installed fittings
should be rated the same as or greater than the nominal diameters of
the dosing pump's suction and pressure valves.
nThe suction line should be kept as short as possible.
nYou should avoid intertwined hoses.
nAvoid loops, since air bubbles can collect.
CAUTION!
Danger of personal injury and material damage!
Before connecting connection pipes and fittings, first remove the dos-
ing head connections, otherwise unnecessary forces will impinge upon
the piping system.
ðRemove the dosing head connections before connecting the con-
nection pipes and fittings.
8.4 Suction and pressure valves
These are single- or double-ball bearing or spring-loaded valves which
can only work properly when mounted in a vertical direction. The condi-
tion of the valves has a significant impact on the function and the dosing
accuracy of the dosing pump. All valves have arrows on them, these indi-
cate the flow direction. These arrows must always point upwards.
8.5 Hydraulic accessories
The following chapter is intended to give you an overview of installation
options.
Please note that these operating instructions are no substitute for the in-
structions supplied with the accessories in each case. The corresponding
documentation supplied with the product applies to safety information
and provides exact instructions on assembly.
8.5.1 Injection nozzle
If the pressure line enters a main line, it is advisable to install an injection
nozzle.
Injection nozzles have three main functions:
nDosing the medium into a main line
nPreventing flowback into the pressure line through a non-return valve
Notes on assembly:
nDouble-ball injection nozzles must be installed into the main line verti-
cally from the bottom. You can install hose and spring-loaded injection
nozzles any way you like.
nWith dosing media that tend to crystallize, it is advisable to carry out
installation into the main line from the bottom. This prevents the inclu-
sion of air bubbles.
nMany dosing media tend to contaminate the injection nozzles, which
can lead to blockages. In cases like this, it is advisable to install an in-
jection nozzle that is easy to dismantle and block off.
8.5.2 Pressure-relief valve
Pressure relief valves have an important safety function for protecting the
dosing pump and the associated pipes and fittings. The dosing pump can
generate a pressure that is many times the rated one. A blocked pressure
line can lead to dosing medium escaping.
Impermissibly high pressure can develop as follows:
nthe shut-off valves are closed even though the dosing pump is run-
ning,
npipes block.
At an appropriate pressure, a pressure relief valve opens a bypass line
and protects the system in this way from damage caused by over-pres-
sure.
Notes on assembly:
nThe line for returning dosing medium from the pressure relief valve
must be routed to the dosing tank or to a collecting pan.
nThe pressure in the dosing tank must not be too high so that it is pos-
sible to accommodate the returned dosing medium.
nAs an alternative, the system can return dosing medium into the suc-
tion line in front of the dosing pump. In this case, there must not be a
non-return valve or a foot valve in the suction line.
nYou should install the pressure relief valve as close as possible to the
dosing head.
8.5.3 Back-pressure valve
Back-pressure valves are required in the following cases:
nThere are considerably fluctuating system pressures