Lutz-Jesco MEMDOS LB User manual

Dosing
Conveying
Control
Liquids
Gases
Systems
Original operating instructions
© Lutz-Jesco GmbH 2018
BA-10407-02-V08
Motor-driven diaphragm dosing pump
MEMDOS LB
Operating instructions
Read the operating manual!
The user is responsible for installation and operation related mistakes!

Table of Contents 3
© Lutz-Jesco GmbH 2018
Subject to technical changes.
181112
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB 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................................6
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.................................................................7
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 Use in explosion risk areas...........................................................8
3.6 Ex label of dosing pump and motor...............................................8
3.7 Foreseeable misuse.....................................................................9
4 Product description .........................................................10
4.1 Properties..................................................................................10
4.2 Scope of delivery .......................................................................10
4.3 Structure of the dosing pump .....................................................10
4.4 Function description ..................................................................10
4.5 Rating plate ...............................................................................11
5 Technical data..................................................................12
5.1 Delivery capacity data................................................................12
5.2 Operating conditions and limits ..................................................13
5.3 Other data .................................................................................13
5.4 Motor data.................................................................................14
5.5 Electrical servomotors ...............................................................18
6 Dimensions ......................................................................19
6.1 MEMDOS LB 4 - 80, 150 ............................................................19
6.2 MEMDOS LB 110, 160 - 1010 ....................................................20
6.3 MEMDOS LB 4 - 80, 150 with electrical servomotor ....................21
6.4 MEMDOS LB 110, 160 - 1010 with electrical servomotor ............21
7 Installing the Dosing Pump..............................................22
7.1 Set up information .....................................................................22
7.2 Installation on a wall console......................................................22
8 Hydraulic installations.....................................................23
8.1 Design of the system..................................................................23
8.2 System piping............................................................................24
8.3 Suction and pressure valves.......................................................24
8.4 Connecting a leakage drain........................................................24
8.5 Hydraulic accessories ................................................................25
9 Electrical installation.......................................................27
9.1 Drive motor connection..............................................................27
9.2 Connection of electric servomotor ..............................................28
10 Control..............................................................................28
11 Operation..........................................................................29
11.1 Commissioning the dosing pump .............................................29
11.2 Commissioning the electric servomotor....................................30
11.3 Decommissioning the dosing pump..........................................30
11.4 Shutting down in an emergency ...............................................30
11.5 Storage ...................................................................................30
11.6 Transportation .........................................................................30
11.7 Disposal of old equipment........................................................30
12 Maintenance ....................................................................31
12.1 Maintenance intervals..............................................................31
12.2 Change the oil..........................................................................32
12.3 Tighten up dosing head bolts....................................................33
12.4 Diaphragm replacement ..........................................................33
12.5 Clean suction and pressure valves............................................34
13 Troubleshooting ...............................................................35
13.1 Type of fault .............................................................................35
14 Spare parts.......................................................................37
14.1 Diaphragm spare parts kits ......................................................37
14.2 Dosing head spare parts kits including valves...........................37
15 Delivery characteristic curves.........................................38
16 EU Declaration of Conformity...........................................40
17 Declaration of no objection..............................................41
18 Warranty claim.................................................................42
19 Index.................................................................................43

Notes for the Reader
Identification of action instructions
4© Lutz-Jesco GmbH 2018
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
1 Notes for the Reader
These Operating instructions contain information and behaviour rules for
safe and designated operation of the dosing pump MEMDOS LB.
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 se-
vere injuries.
CAUTION
Refers to a potentially hazardous situation. Failure
to follow this instruction may lead to minor injury
or damage to property.
NOTE Refers to a danger which, if ignored, may lead to
risk to the machine and its function.
Table 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
Table 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
General warnings 5
© Lutz-Jesco GmbH 2018
Subject to technical changes.
181112
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB 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 medi-
um.
ðRelease pressure in hydraulic parts.
ðNever look into open ends of plugged pipelines and valves.
WARNING
Danger from electromagnetic radiation!
Solenoid diaphragm dosing pumps In operation, solenoid diaphragm
dosing pumps emit a stray magnetic field. If you do not keep far enough
away, the function of a pacemaker can be negatively affected.
ðPeople with pacemakers must always keep at least 50 cm away
from the dosing pump.
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.

Safety
Personal protective equipment
6© Lutz-Jesco GmbH 2018
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
2.2 Warnings for use within explosive-risk zones
ATEX certified versions of the MEMDOS LB dosing pump can be used in
potentially explosive atmospheres. 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 MEMDOS LB dosing pump in
potentially explosive atmosphere (check the information on the rat-
ing plate).
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.
DANGER
Danger to life from the incorrect spare parts!
Original Lutz-Jesco GmbH diaphragms from 90mm in diameter are
fitted with special conductive diaphragms to prevent static charging. If
unsuitable membranes from other manufacturers are fitted, this can
lead to electrostatic charging in explosive risk areas. Explosions may
result which could result in fatal injuries.
ðOnly use original diaphragms for spare parts. This applies to MEM-
DOS LB 80 – 1010 dosing pumps.
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
safety 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
Protective clothing
Protective gloves
Table 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.

Safety
Personnel qualification 7
© Lutz-Jesco GmbH 2018
Subject to technical changes.
181112
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
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.
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
Table 4: Personnel qualification

Intended use
Ex label of dosing pump and motor
8© Lutz-Jesco GmbH 2018
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB 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 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 LB is intended for the following purpose: 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38.
nComply with the information regarding the operating and environmen-
tal conditions (see chapter "Technical data").
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 dif-
ferent dosing media can be found in the Compatibility Chart of
the manufacturer.
The information in this resistance list is based on information
from the material manufacturers and on expertise obtained
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 Use in explosion risk areas
nThe MEMDOS LB dosing pump with ATEX certification is an electric
motor-driven, explosion protected of equipment group II, equipment
category 2G. When used with an explosion-protected motor, it is used
to supply and dose fluids in zone 1 and 2 explosion risk areas.
nWhen using the dosing pumps in explosion risk areas, you must ob-
serve the minimum requirements concerning zoning. The explosion
group, category and type of protection which is indicated in the label-
ling, must meet or be better than the requirements for the intended
area of use.
nThe operating instructions for the explosion protected motor which
are included in delivery must also be observed.
3.6 Ex label of dosing pump and motor
Dosing pumps for use in zone 1 explosion risk areas carry the label: II 2G
Ex h IIC T4 - PTB 12 ATEX D036.
Motors for use in zone 1 explosion risk areas carry the label: II 2G Ex de
IIC T4.
Dosing pumps for use in zone 2 explosion risk areas carry the label: II 2G
Ex h IIC T4 - PTB 12 ATEX D036.
Motors for use in zone 2 explosion risk areas carry the label: II 2G Ex e IIC
T3.
This information can also be found on the ratings plate on the dosing
pump and the ratings plate on the motor.

Intended use
Foreseeable misuse 9
© Lutz-Jesco GmbH 2018
Subject to technical changes.
181112
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
3.7 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:
3.7.1 Incorrect assembly
nUnstable or unsuitable bracket
nDosing pump bolted wrongly or loosely
3.7.2 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
3.7.3 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Diaphragm monitoring not connected or defective
nProtective earth removed
3.7.4 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
3.7.5 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Operation not possible due to dirty or illegible display of the dosing
pump
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
3.7.6 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 valves
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
3.7.7 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
3.7.8 Incorrect disposal
nIncorrect disposal of dosing media, operating resources and other
materials
nNo labelling of hazardous substances

Product description
Function description
10 © Lutz-Jesco GmbH 2018
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
4 Product description
4.1 Properties
The MEMDOS LB is a classic motor-driven diaphragm dosing pump used
when a control is not required to achieve constant dosing.
They are characterized by the following properties:
nSuitable for accurate mixing tasks.
nPerformance range of 4 to 1020 l/h with a backpressure of 16 - 3 bar,
nReproducible dosing precision of ± 2 %,
nStroke length manually adjustable between 0% and 100%.
nSuitable for use with frequency converters.
nWide range of dosing head materials.
nWith ATEX certification can be used in zones 1 and 2 explosion risk ar-
eas.
nLeak-free.
nSuitable for highly aggressive or poisonous dosing media,
nFitted with a separating chamber which helps preventing uncontrolled
dosing media escape in the event of a diaphragm rupture.
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 LB,
nOperating instructions,
nMotor operating instructions (only for MEMDOS LB dosing pumps with
explosion protection motors),
nElectric servomotor and associated operating manual (optional),
nInspection report and test certificate (optional),
nAccessory kit (optional).
4.3 Structure of the dosing pump
4.3.1 General Overview
Fig. 1: Dosing pump overview MEMDOS LB
No. Description
1Valve and connection on the discharge side
2Dosing head
3Valve and connection on the suction side
4Oil level glass
5Drive motor
6Oil inlet and gearbox ventilation
7Stroke length adjustment
8Oil drain
Table 5: Designation of components
4.4 Function description
Dosing pumps are positive displacement pumps. They are used if pre-
cisely defined delivery of a medium is necessary. A constant volume per
stroke or time is delivered.
The system delivers or meters the dosing medium by means of a repeat-
ed sequence of suction strokes followed by pressure strokes. This results
in a pulsing flow.
1
3
2
5
6
7
8
4

Product description
Rating plate 11
© Lutz-Jesco GmbH 2018
Subject to technical changes.
181112
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
If the dosing pump is in the suction stroke phase, the diaphragm is pulled
into the rear final position. Due to the resulting vacuum in the dosing
head, the pressure valve closes, the suction valve opens and dosing me-
dium flows from the suction line into the dosing head.
If the dosing pump is in the pressure stroke phase, the diaphragm is
moved into the front final position. Due to the pressure in the dosing head,
the suction valve closes and the dosing medium flows through the pres-
sure valve from the dosing head into the pressurised pipe.
4.5 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 l/h (XXX gph) at 50 Hz
Max.: XXX l/h (XXX gph) at 60 Hz
Max.: XX bar (XXX psig)
IP XX, XXX V/50 Hz, 460 V/60 Hz
XX/XXXX
S/N: XXXXXXXXXX
P/N:
Made in
Germany
*102A12345678*
*12345678012345*
MEMDOS LB
Lutz-Jesco GmbH 30900 Wedemark
Am Bostelberge 19 Germany
II 2G ck IIC T3
- PTB 12 ATEX
T
Fig. 2: Rating plate MEMDOS LB
No. Description
1Product, type, nominal size
2 Material
3Maximum delivery capacity in l/h and gph at 50Hz and
maximum back pressure
4Maximum delivery capacity in l/h and gph at 60Hz and
maximum back pressure
5Maximum pressure in bar and psig
6Protection class
7Voltage supply at 50 and 60Hz
8Label showing conformity with applicable European directives
9WEEE label
10 ATEX marking
11 Serial number
12 Part number
13 Month / year of manufacture
Table 6: Rating plate
13
12
11
3
4
5
1
6
7
8 9
2
10

Technical data
Delivery capacity data
12 © Lutz-Jesco GmbH 2018
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
5 Technical data
5.1 Delivery capacity data
Please note that some of this data only represents guide values. The actual capacity of a dosing pump depends on various factors. For approximate val-
ues of the delivery capacity at different pressures, refer to chapter “MEMDOS LB 1010” on page39.
5.1.1 MEMDOS LB 4 - 80, 150
Information Value
MEMDOS LB Size
4 4-HP 10 10-HP 20 20-HP 35 60 80 150
Delivery capacity at max.
backpressure
l/h
50 Hz 4 8.4 14 24 22 36 36 63 90 156
60 Hz 4.8 10.1 16.8 28.8 26.4 43.2 43.2 75.6 108 187.2
ml/stroke 2.6 5.4 3.2 5.6 3.1 5.0 8.3 8.8 20.8 21.7
max. delivery pressure bar 12 16 12 16 12 16 10 10 5 5
Max. stroke frequency rpm
50 Hz 26 26 72 72 120 120 72 120 72 120
60 Hz 31.2 31.2 86.4 86.4 144 144 86.4 144 86.4 144
Suction height for
non-gassing media (with a
filled suction line)
mWS 9 99999 8 8 7 7
Table 7: Delivery capacity MEMDOS LB 4 - 80, 150
5.1.2 MEMDOS LB 110, 160 - 1010
Information Value
MEMDOS LB Size
110 160 210 260 310 400 510 760 1010
Delivery capacity at max.
backpressure
l/h
50 Hz 114 144 210 264 294 390 504 744 1020
60 Hz 136.8 172.8 252 316.8 352.8 468 604.8 892.8 1224
ml/stroke 19.8 20.0 36.5 36.7 51.0 54.2 158.5 163.2 158.9
max. delivery pressure bar 10 10 10 10 8 6 4 4 3
Max. stroke frequency rpm
50 Hz 96 120 96 120 96 120 53 76 107
60 Hz 115.2 144 115.2 144 115.2 144 63.6 91.2 128.4
Suction height for
non-gassing media (with a
filled suction line)
mWS 7 7664.5 4.5 1 1 1
Table 8: Delivery capacity MEMDOS LB 110, 160 - 1010

Technical data
Other data 13
© Lutz-Jesco GmbH 2018
Subject to technical changes.
181112
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
5.2 Operating conditions and limits
Information Value
MEMDOS LB Size
4 – 1010
Approved ambient temperature °C 5 – 45 (with PVC components 5 – 40)*
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
Table 9: Operating conditions and limits
* 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.
5.2.1 Approved media temperature
Information Value MEMDOS LB (all sizes)
Dosing head made of PVC °C 0 – 35
Dosing head made of PP °C 0 – 60
Dosing head made of PVDF °C 0 – 80
Dosing head made of stainless steel (1.4571) °C 0 – 80
Table 10: Approved media temperature
5.3 Other data
5.3.1 MEMDOS LB 4 - 80, 150
Information Value
MEMDOS LB Size
4 4-HP 10 10-HP 20 20-HP 35 60 80 150
Weight (qith dosing head made of PVC)* kg 5.2 5.5 7.5
Weight (with dosing head made of PP)* kg 5.1 5.3 7.1
Weight (dosing head made of PVDF)* kg 5.3 5.6 8.2
Weight (with dosing head made of stainless steel
(1.4571))* kg 6.7 7.3 12.7
Diameter of diaphragm mm 52 64 90
Stroke length mm 7.5 10
Protection class IP55
Nominal valve width DN4 DN6 DN10
Table 11: Other data MEMDOS LB 4 - 80, 150
* Specifications without motor. For weight specifications, see “5.4 Motor data” on page14.

Technical data
Motor data
14 © Lutz-Jesco GmbH 2018
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
5.3.2 MEMDOS LB 110, 160 - 1010
Information Value
MEMDOS LB Size
110 160 210 260 310 400 510 760 1010
Weight (qith dosing head made of PVC)* kg 15.2 15.7 17.7 24.9
Weight (with dosing head made of PP)* kg 14.9 15.2 16.8 22.8
Weight (dosing head made of PVDF)* kg 15.9 16.2 18.4 26.2
Weight (with dosing head made of stainless steel
(1.4571))* kg 20.4 22.8 28.7 45.7
Diameter of diaphragm mm 90 120 150 185
Stroke length mm 10 12.5
Protection class IP55
Nominal valve width DN10 DN10** / DN15 DN15 DN25
Table 12: Other data MEMDOS LB 110, 160 - 1010
* Specifications without motor. For weight specifications, see “5.4 Motor data” on page14. ** DN10 only with double-ball valves.
5.4 Motor data
5.4.1 230V / 120V alternating current motors with operating capacitor
Information Value
MEMDOS LB Size
4 - 80, 150 110, 160 - 400 510 - 1010
Power output kW 0.12 0.25 0.75
Speed rpm
50 Hz 1370 1425 1440
60 Hz 1690 1725 1680
Nominal current A
50 Hz 1.2 2.15 5
60 Hz 2.6 5.8 11.1
Voltage V 1~ 230 / 120
Mains voltage DIN EC 60038
Frequency Hz 50 / 60
Operating mode S1
Protection class IP55
Insulation class F
Size 63 71 80
Flange Diameter mm 90 105 120
Shaft mm 11 x 23 14 x 30 19 x 40
Cooling IC 411
Weight (230V) kg 4.1 12.1 11
Weight (120V) kg 4.5 11.1 10.5
Table 13: 230V / 120V alternating current motors with operating capacitor

Technical data
Motor data 15
© Lutz-Jesco GmbH 2018
Subject to technical changes.
181112
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
5.4.2 400V /230V three-phase motors
Information Value
MEMDOS LB Size
4 - 80, 150 110, 160 - 400 510 - 760 1010
Power output kW
50 Hz 0.12 0.37 0.55 0.75
60 Hz 0.14 0.44 0.65 0.90
Speed rpm
50 Hz 1360 1350 1385 1450
60 Hz 1670 1650 1685 1750
Nominal current A
50 Hz 0.49 1.08 1.44 1.75
60 Hz 0.42 1.03 1.37 1.72
Voltage V 3~
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 63 71 80
Flange Diameter mm 90 105 120
Shaft mm 11 x 23 14 x 30 19 x 40
Cooling IC 411
Weight kg 4.1 6.6 9 13
Table 14: 400V /230V three-phase motors

Technical data
Motor data
16 © Lutz-Jesco GmbH 2018
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
5.4.3 400V /230V three-phase motors with frequency converter
Information Value
MEMDOS LB Size
4 - 80, 150 110, 160 - 400 510 - 760 1010
Power output kW
50 Hz 0.18 0.60 0.75 1.10
60 Hz 0.21 0.69 0.86 1.30
Speed rpm
50 Hz 1350 1350 1450 1440
60 Hz 1650 1655 1750 1740
Nominal current A
50 Hz 0.58 1.60 1.76 2.43
60 Hz 0.57 1.50 1.66 2.35
Voltage V 3~
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 63 71 80
Flange Diameter mm 90 105 120
Shaft mm 11 x 23 14 x 30 19 x 40
Cooling IC 411
Weight kg 4 7.8 14 13
Table 15: 400V /230V three-phase motors
5.4.4 Three-phase motors in explosion protection versions
5.4.4.1 Motors for use in Zone 1 explosive risk areas
Information Value
MEMDOS LB Size
4 - 80, 150 110, 160 - 400 510 - 760 1010
Power output kW 0.18 0.37 0.55 0.75
Speed rpm 1340 1390 1445 1410
Nominal current A 0.67 1.1 1.45 2.05
Voltage V 3~ 400 / 230
Mains voltage DIN EC 60038
Frequency Hz 50
Operating mode S1
Table 16: Motors for use in Zone 1 explosive risk areas

Technical data
Motor data 17
© Lutz-Jesco GmbH 2018
Subject to technical changes.
181112
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
Information Value
MEMDOS LB Size
4 - 80, 150 110, 160 - 400 510 - 760 1010
Protection class IP55
Insulation class F
Temperature class T4
Degree of ignition protection de
Ex label II 2G Ex de IIC T4
Size 63 71 80
Flange Diameter mm 90 105 120
Shaft mm 11 x 23 14 x 30 19 x 40
Cooling IC 411
Weight kg 16 19 12 24
Table 16: Motors for use in Zone 1 explosive risk areas
5.4.4.2 Motors for use in Zone 2 explosive risk areas
Information Value
MEMDOS LB Size
4 - 80, 150 110, 160 - 400 510 - 760 1010
Power output kW 0.12 0.37 0.55 0.75
Speed rpm 1375 1370 1380
Nominal current A 0.90 1.08 1.59
Voltage V 3~ 230 / 400
Mains voltage DIN EC 60038
Frequency Hz 50
Operating mode S1
Protection class IP55
Insulation class F
Temperature class T3
Degree of ignition protection e
Ex label II 2G Ex e IIC T3
Size 63 71 80
Flange Diameter mm 90 105 120
Shaft mm 11 x 23 14 x 30 19 x 40
Cooling IC 411
Weight kg 4 7.8 10.6 11.7
Table 17: Motors for use in Zone 2 explosive risk areas

Technical data
Electrical servomotors
18 © Lutz-Jesco GmbH 2018
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
5.5 Electrical servomotors
Information Value
MEMDOS LB Size
4 - 1010
Servomotor Type NL 0608 Servomotor Type NL 0608 PMR 2-LC
Design Reversible alternating current motor with maintenance-free gear
Inside gear disengagement
Use For controllers with switching output
(3-point step control)
For controllers with constant output
0(4) – 20 mA
Voltage V 1~ 115 230 115 230
Frequency Hz 50 / 60
Power consumption VA max. 20
Torque Nm 8
Actuating time (switch actuation path 10 turns) s
240 (50 Hz)
200 (60 Hz)
Service switch -Manual/automatic operation
Protection classification IP65 (with cable screw connection)
Ambient temperature °C -15 ... +60 0 ... +60
Weight kg 3.4
Shaft end mm d = 12 x 25 (with feather keyway)
End-position limit 2 limit switches, adjustable by trigger cam
Inputs
Control 3-point step control 0(4) - 20 mA
0 - 10 V*
Working resistance at 0(4) – 20 mA -250 Ω
Outputs
Position feedback signal for remote display 0 - 1000 Ω, max. 2 W 0(4) - 20 mA
Table 18: Electrical servomotors
* Corresponding presetting available as an option or subsequently adjustable
i
Please also follow the operating manual for the electric servo-
motor enclosed with the dosing pump.

Dimensions
MEMDOS LB 4 - 80, 150 19
© Lutz-Jesco GmbH 2018
Subject to technical changes.
181112
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
6 Dimensions
6.1 MEMDOS LB 4 - 80, 150
Fig. 3: Dimensioned drawings MEMDOS LB 4 - 80 and 150
Scale
MEMDOS LB size
4 - 20 35 - 60 80, 150
A 126 149 249
B 116 121.5 133
C 249 256 280
D * 389 389 389
LDepends on the connection type and size
Table 19: Dimensions MEMDOS LB 4 - 80 and 150
* with 400V /230V three-phase motor
B ~150 23
65
~82
120
Ø 9
C
D
218
140
A LL
112

Dimensions
MEMDOS LB 110, 160 - 1010
20 © Lutz-Jesco GmbH 2018
BA-10407-02-V08
Motor-driven diaphragm dosing pump MEMDOS LB Operating instructions
6.2 MEMDOS LB 110, 160 - 1010
Fig. 4: Dimensioned drawing MEMDOS LB 110, 160 - 1010
Scale
MEMDOS LB size
110, 160 210 - 260 310 - 400 510 - 1010
A 249 268 312.5 352
B 160 170 175 208 (194.3*)
C 346 357 362 402 (375.5*)
D ** 437 437 437 509
LDepends on the connection type and size
Table 20: Dimensions MEMDOS LB 110, 160 - 1010
* with dosing head made of stainless steel (1.4571)
** with 400V /230V three-phase motor
B ~150 32
82
~101
162
Ø 9
C
D
218
140
A LL
142