Lutz-Jesco MEMDOS SMART LB User manual

Dosing
Conveying
Control
Liquids
Gases
Systems
Original Operating Instructions
© Lutz-Jesco GmbH 2014
BA-10100-02-V02
Stepper Motor-driven Diaphragm Dosing Pump
MEMDOS SMART LB
Operating Instructions
Read the operating instructions!
The user is responsible for installation and operation related mistakes!

3
© Lutz-Jesco GmbH 2014
Subject to technical changes
140410
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB Operating Instructions
BA-10100-02-V02
Table of Contents
1 Notes to the Reader .......................................................... 4
General non-discrimination ........................................................... 4
Explanations of signal words ......................................................... 4
Explanations of warning signs ....................................................... 4
Identification of warnings .............................................................. 4
Identification of instructions for action ........................................... 4
2 Safety ................................................................................ 5
General warnings .......................................................................... 5
Hazards due to non-compliance with the safety instructions.......... 6
Safe operation ............................................................................... 6
Personal protective equipment ...................................................... 6
Personnel qualification .................................................................. 6
3 Appropriate and intended use .......................................... 7
Notes to Product warranty ............................................................. 7
Intended purpose .......................................................................... 7
Device revision .............................................................................. 7
Principles ...................................................................................... 7
Prohibited dosing media ................................................................ 7
Foreseeable misuse ...................................................................... 7
4 Product Description .......................................................... 9
Properties ..................................................................................... 9
Scope of delivery........................................................................... 9
Structure of the dosing pump ........................................................ 9
Function description .................................................................... 10
Ratings plate (type label) ............................................................. 10
Conveying characteristics............................................................ 11
5 Technical specifications ................................................. 12
Delivery capacity data ................................................................. 12
Operating conditions and limits ................................................... 12
Electrical data ............................................................................. 13
Other data ................................................................................... 13
6Dimensions...................................................................... 14
MEMDOS SMART LB 5, 10 .......................................................... 14
MEMDOS SMART LB 15, 20 ........................................................ 15
7 Installing the Dosing Pump ............................................ 16
Set up information....................................................................... 16
Installation examples................................................................... 16
8 Hydraulic installations .................................................... 17
Dimensioning of the system ........................................................ 17
System piping ............................................................................. 18
Aligning the dosing head ............................................................. 18
Hydraulic connections ................................................................. 18
Connecting a leakage drain ......................................................... 20
Connecting the dosing head venting facility ................................. 20
Hydraulic accessories.................................................................. 21
9 Electrical installation ...................................................... 27
Principles .................................................................................... 27
Description of the connection socket ........................................... 28
10 Control............................................................................. 29
Stroke frequency setting ............................................................. 29
Indicator lights ............................................................................ 29
11 Operation ........................................................................ 30
Commissioning the dosing pump ................................................ 30
External On/Off via Release input ................................................ 32
Decommissioning the dosing pump............................................. 32
Shutting down in an emergency .................................................. 32
Storage ....................................................................................... 32
Transportation ............................................................................ 33
Disposal of old units.................................................................... 33
12 Maintenance ................................................................... 34
Maintenance intervals ................................................................. 34
Tighten dosing head bolts ........................................................... 35
Change the diaphragm ................................................................ 35
Clean suction and discharge valves............................................. 35
13 Troubleshooting .............................................................. 36
Type of fault................................................................................ 36
14 Spare parts ..................................................................... 39
Diaphragm spare parts kits ......................................................... 39
Dosing head spare parts kits including valves ............................. 39
15 Delivery characteristic curves ....................................... 40
16 EC Declaration of Conformity ......................................... 41
17 Declaration of harmlessness ......................................... 42
19 Warranty application ...................................................... 44
20 Index ............................................................................... 45

Notes to the Reader
General non-discrimination
4
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10100-02-V02
1 Notes to the Reader
These Operating instructions contain information and behaviour rules for
safe and designated operation of the dosing pump MEMDOS SMART LB.
Follow these principles:
Read the entire Operating instructions prior to commissioning the
unit.
Ensure that everyone who works with or on the dosing pump has
read the operating instructions and follows them.
Keep the operating instructions for the entire service life of the
dosing pump.
Pass on the operating instructions to any subsequent owner of the
dosing pump.
1.1 General non-discrimination
In these operating instructions, 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 simplifi-
cation.
1.2 Explanations of signal words
Different signal words in combination with warning signs are used in
these Operating instructions. Signal words illustrate the gravity of
possible injuries if the risk is ignored:
I
1.3 Explanations of warning signs
Warning signs represent the type and source of a danger:
1.4 Identification of warnings
Warnings are intended to help you recognise risks and avoid negative
consequences.
This is how warnings are identified:
1.5 Identification of instructions for action
This is how pre-conditions for action are identified:
Pre-condition for action which must be met before taking action.
This is how instructions for action are identified:
Separate step with no follow-up action.
1. First step in a series of steps.
2. Second step in a series of steps.
Result of the above action.
Action completed, aim achieved.
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.
Ignoring this sign might lead to death or the most
serious injuries.
CAUTION Refers to a potentially hazardous situation.
Ignoring this sign may lead to light injuries or
damage to property.
NOTICE Refers to a danger which, if ignored, may
compromise the unit or its function.
Table 1-1: Explanations of signal words
Warning sign Type of danger
General danger zone
Danger of electric shock
Danger of caustic or other burns.
Danger of explosions
Danger of automatic start up
Danger of damage to machine or compromised
function.
Table 1-2: Warning signs explanation
Warning sign SIGNAL WORD
Description of danger.
Consequences if ignored.
The arrow signals a precautionary measure to be taken to elim-
inate the danger.

Safety
General warnings 5
© Lutz-Jesco GmbH 2014
Subject to technical changes
140410
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB Operating Instructions
BA-10100-02-V02
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
Danger to life due to electric shock
Wrongly connected or located cables or damaged ones can injure
you.
Connect the device only to a socket outlet with earthing contact
protected by a ground fault circuit interrupter (GFCI).
Replace damaged cables without delay.
Do not use extension cables.
Do not bury cables.
Secure cables to avoid being damaged by other equipment.
DANGER
Danger to life through explosions!
When using dosing pumps without ATEX certification in a potentially
explosive area, explosions can occur that result in fatal injuries.
Never use the MEMDOS SMART LB dosing pump in potentially
explosive areas.
WARNING
Caustic burns or other burns through dosing media!
After connecting the mains supply, residual dosing media in the
dosing head can spray out.
Before connecting the mains supply, connect the dosing lines.
Check that all the screw connections have been tightened cor-
rectly 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.
Use sufficient personal protective equipment.
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.
Release pressure in hydraulic parts.
Never look into open ends of plugged pipelines and valves.
WARNING
Caustic burns or other burns through dosing media!
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.
Make sure that the materials you are using are suitable for the
dosing medium.
Make sure that the lubricants, adhesives, sealants, etc. that you
use are suitable for 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. Insuffi-
cient qualification will raise the risk of accidents.
Ensure that all action is taken only by personnel with sufficient
and corresponding qualifications.
Prevent access to the system for unauthorised persons.
CAUTION
Danger of personal injury and material damage!
Changing dosing media can lead to unpredictable reactions.
Thoroughly clean the dosing pump and appropriate sections of
the plant to avoid chemical reactions.

Safety
Hazards due to non-compliance with the safety instructions
6
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10100-02-V02
2.2 Hazards due to non-compliance with the safety
instructions
Failure to observe the safety instructions can pose a risk not only to the
personnel, but consequentially to the environment and the unit.
The specific consequences can be:
failure of vital functions of the dosing pump and the system,
failure of required maintenance and repair methods,
danger for individuals through dangerous dosing media,
danger to the environment through substances leaking from the
system.
2.3 Safe operation
Besides the safety instructions specified in these Operating instruc-
tions, further safety rules apply and must be followed:
Accident prevention regulations,
safety and operating provisions,
safety provisions for handling dangerous substances (mostly the
safety data sheets to dosing media),
environmental protection provisions,
applicable standards and legislation.
2.4 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
equipment. Read the Accident Prevention Regulations and the Safety
Data Sheets to the dosing media find out what protective equipment you
need.
As a minimum, the following protective equipment is recommended:
Protective clothing Protective gloves Goggles
Corresponding protective equipment must be used during these tasks:
Commissioning,
working on the dosing pump while running,
decommissioning,
maintenance work,
disposal.
2.5 Personnel qualification
Any personnel who work on the dosing pump must have appropriate
special knowledge and skills.
Anybody who works on the dosing pump must meet the conditions
below:
Attendance at all the training courses offered by the owner,
Personal suitability for the respective job,
Sufficient qualification for the respective job,
Training in handling of the dosing pump,
Knowledge of safety equipment and the way this equipment func-
tions,
Knowledge of these Operating instructions, particularly of safety
instructions and sections relevant for the job,
Knowledge of fundamental regulations regarding health and safety
and accident prevention.
All persons must generally have the following minimum qualification:
Training as specialists to carry out work on the dosing pump unsu-
pervised,
Sufficient training that they can work on the dosing pump under the
supervision and guidance of a trained specialist.
These Operating instructions differentiate these user groups:
2.5.1 Specialist staff
Specialist staff are able, thanks to their professional training, knowledge
and experience as well as knowledge of the respective provisions, to do
the job allocated to them and recognise and/or eliminate any possible
dangers by themselves.
2.5.2 Trained persons
Trained persons have been trained by the operator into the tasks they
are supposed to perform and into the dangers stemming from improper
behaviour.
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 Tasks
Specialist staff Assembly
Hydraulic installations
Electrical installation
Maintenance
Repairs
Commissioning
Decommissioning
Disposal
Fault rectification
Trained persons Storage
Transportation
Control
Fault rectification
Table 2-1: Personnel qualification

Appropriate and intended use
Notes to Product warranty 7
© Lutz-Jesco GmbH 2014
Subject to technical changes
140410
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB Operating Instructions
BA-10100-02-V02
3 Appropriate and intended use
3.1 Notes to 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:
The dosing pump is operated in a manner which is not consistent
with these operating instructions, particularly the safety and
handling instructions and the chapter entitled “Appropriate and
intended use“.
If people operate the product who are not adequately qualified to
carry out their respective activities,
No original spare parts or accessories of Lutz-Jesco GmbH are used,
Unauthorised changes are made to the device by the user,
The user uses different dosing media than those indicated in the
order,
The user does not use dosing media under the conditions agreed
with the manufacturer such as modified concentration, density,
temperature, contamination, etc.
3.2 Intended purpose
The MEMDOS SMART LB dosing pump is intended for the following
purpose: the conveying and dosing of liquids.
3.3 Device revision
This operating manual applies to the following devices:
3.4 Principles
Before delivery, the manufacturer inspected the dosing pump and
operated it under specific conditions (with a specific dosing medium
with a specific density and temperature, with specific pipe dimen-
sions, etc.) Since these conditions vary at every installation location,
you must calibrate the dosing pump after delivery. For information
on the calibration procedure refer to Chapter ”Calibrating the dosing
pump“ (see page 31). For details on the approximate values and the
capacity of the dosing pump, refer to the chapter entitled ”Delivery
characteristic curves“ (see page 40).
Information on the usage and environment (see "Technical specifica-
tions" on page 12) applies.
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
respective medium.
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
dependence on the temperature of the media and the operating
pressure.
The dosing pump is not intended for outdoor use unless appropriate
protective measures have been taken.
Avoid leaks of liquids and dust into the casing and avoid direct expo-
sure to sunlight.
You must never operate dosing pumps in a potentially explosive
atmosphere if they do not have corresponding nameplates or an
appropriate EC Declaration of Conformity for potentially explosive
atmospheres.
3.5 Prohibited dosing media
The dosing pump must not be used for these media and substances:
Gaseous media,
radioactive media,
solid substances,
combustible media,
all other media that are not suitable for delivery using this dosing
pump.
3.6 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
chapter 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:
3.6.1 Incorrect assembly
Unstable or unsuitable bracket
Dosing pump bolted wrongly or loosely
3.6.2 Incorrect hydraulic installation
Suction and pressure lines dimensioned incorrectly
Unsuitable connection of the pipes due to wrong material or unsuit-
able connections.
Suction and pressure lines mixed-up
Damage to threads due to them being tightened too much
Bending of pipelines
No free return flow of the pressure relief valve
Excessive demand due to the pressure differences between the
suction and discharge valves
Device Month / year of manufacture
MEMDOS SMART LB 04/2014 onwards
Table 3-1: Device revision
Information on the suitability of materials combined with
different dosing media can be found in the Chemical Resist-
ance List 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.
i

Appropriate and intended use
Foreseeable misuse
8
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10100-02-V02
Through-suction at installation without back-pressure valves
Damage due to undamped acceleration mass forces
Exceeding the admissible pressure on the suction and discharge
sides
Using damaged parts
3.6.3 Incorrect electrical installation
Connecting the mains voltage without a protective earth
Unsecured mains or one that does not conform to standards
Not possible to immediately or easily disconnect the power supply
Wrong connecting cables for mains voltage
Protective earth removed
3.6.4 Incorrect commissioning
Commissioning with damaged plant
Shut-off valves closed at commissioning
Closed suction or pressure line, e.g. due to blockages
Personnel was not informed before commissioning
System was recommissioned after maintenance without all the
protective equipment and fixtures, etc. being reconnected.
Inadequate protective clothing or none at all
3.6.5 Incorrect operation
Protective equipment not functioning correctly or dismantled
Modification of the dosing pump without authority
Ignoring operational disturbances
Elimination of operational disturbances by personnel without
adequate qualifications
Deposits in the dosing head due to inadequate purging, particularly
with suspensions
Bridging the external fuse
Operation made more difficult due to inadequate lighting or
machines that are difficult to access
Delivery of dosing media for which the system is not designed
Delivery of particulate or contaminated dosing media
Inadequate protective clothing or none at all
3.6.6 Incorrect maintenance
Carrying out maintenance during ongoing operation
Carrying out work that is not described in the operating instructions
No adequate or regular inspection of correct functioning
No replacement of damaged parts or cables with inadequate insula-
tion
No securing against reactivation during maintenance work
Using cleaning materials that can cause reactions with the dosing
media
Inadequate cleaning of the system
Unsuitable purging medium
Unsuitable cleaning materials
Cleaning materials left in system sections
Using unsuitable cleaning equipment
Using the wrong spares or lubricants
Contaminating the dosing medium with lubricant
Installing spares without following the instructions in the operating
manual
Blocking venting orifices
Pulling off sections of the plant
Contamination at installation without a dirt trap
Mixing up the valves
Mixing up the sensor lines
Not reconnecting all the lines
Damaging or not installing all the seals
Not renewing seals
Not paying attention to safety data sheets
Inadequate protective clothing or none at all
3.6.7 Incorrect decommissioning
Not completely removing the dosing medium
Dismantling lines while the dosing pump is running
Device not disconnected from the power supply
Using the wrong dismantling tools
Inadequate protective clothing or none at all
3.6.8 Incorrect disposal
Incorrect disposal of dosing media, operating resources and other
materials
No labelling of hazardous substances

Product Description
Properties 9
© Lutz-Jesco GmbH 2014
Subject to technical changes
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Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB Operating Instructions
BA-10100-02-V02
4 Product Description
4.1 Properties
The MEMDOS SMART LB is a stepper motor-driven diaphragm dosing
pump that is used when precise dosing results are required.
They are characterized by the following properties:
Capacity range 5 – 19.2 l/h, up to 15 bar,
Power supply 110 – 240 V, 50/60 Hz, IP65, 25 W,
Microprocessor controlled drive,
Integrated dosing head venting facility (only MEMDOS SMART LB 5
and LB 10 with dosing head made of plastic),
Suitable for wall and floor mounting,
Material finishes PVC, PP, PVDF and stainless steel (1.4571),
Infinitely adjustable stroke frequency from 0 – 100 %,
Release input for external start/stop
4.2 Scope of delivery
Please compare the delivery note with the scope of delivery. The
following items are part of the scope of delivery:
Dosing pump MEMDOS SMART LB,
One set each of hose clamping connections for the suction and
discharge sides for hoses with diameters of 4/6 mm, 6/9 mm and
6/12 mm (made of PVC, PP and PVDF)
Mains cable,
Operating Manual,
Inspection report and test certificate (optional),
Accessory kit (optional).
4.3 Structure of the dosing pump
4.3.1 General Overview
Fig. 4-1: Overview of MEMDOS SMART LB dosing pump
4.3.2 Dosing head
Fig. 4-2: Dosing head
No. Description
Dosing head
Drive unit
Control unit
No. Description
Valve and connection on the discharge side
integrated dosing head venting facility (only MEMDOS SMART
LB 5 and LB 10 with dosing head made of plastic)
Arrow indicating the direction of throughflow of the dosing
medium (only MEMDOS SMART LB 5 and LB 10 with dosing
head made of plastic)
Valve and connection on the suction side








Product Description
Function description
10
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10100-02-V02
4.3.3 Control elements
Fig. 4-3: Controller of MEMDOS SMART LB dosing pump
4.4 Function description
Dosing pumps are positive displacement pumps. They are used if
precisely 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
repeated sequence of suction strokes followed by pressure strokes. This
results in a pulsing flow.
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 discharge valve closes, the suction valve opens and
dosing medium 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
discharge valve from the dosing head into the pressurised pipe.
4.5 Ratings plate (type label)
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.
Fig. 4-4: MEMDOS SMART LB nameplate
No. Description
Stroke frequency setting
Power LED
Alarm LED
Release input for external start/stop
Mains cable for power supply
Table 4-1: Designation of components





No. Description
Product, type, nominal size
Part number
Type of material of dosing head/ type of material of seals
Maximum delivery capacity at average pressure
Maximum delivery capacity at maximum pressure
Protection classification
Voltage supply
Frequency
Power consumption
WEEE label
Label showing conformity with applicable European directives
Month / year of manufacture
Serial number
Table 4-2: Ratings plate
Material:
Max. XXX l/h at bar
Max. XXX l/h at bar
IP XX, XXX V, XXXX Hz, XX W
Lutz-Jesco GmbH
30900 Wedemark Germany
XX/XXXX
S/N: XXXXXXXXXXP/N:
Made in Germany
*102A12345678*
*12345678012345*
MEMDOS SMART LB





 





Product Description
Conveying characteristics 11
© Lutz-Jesco GmbH 2014
Subject to technical changes
140410
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB Operating Instructions
BA-10100-02-V02
4.6 Conveying characteristics
The MEMDOS SMART LB dosing pump is designed to run the pressure stroke and suction stroke at different speeds. For low supply rates, for
example, the dosing pump performs the suction stroke at the maximum speed and adjusts the speed of the pressure stroke to match the desired
supply rate. This produces a constant supply stream, which gives you a low-pulsation, smooth dosing.
Fig. 4-5: Selection of available dosing programs
Settings
100 % delivery rate
50 % delivery rate
10 % delivery rate
Pressure stroke
Suction stroke
Time
Time
Time

Technical specifications
Delivery capacity data
12
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10100-02-V02
5 Technical specifications
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
values of the delivery capacity at different pressures, refer to Chapter ”Delivery characteristic curves“ (see page 40).
5.2 Operating conditions and limits
* Use of dosing pumps at ambient temperatures of under 5 °C has to be checked individually. In those cases please contact the manufacturer.
** With a viscosity of ~300 mPas and above, you must use spring-loaded valves.
*** If the viscosity is above 1000 mPas, this must be checked individually.
Information Value
MEMDOS SMART LB size
5 10 15 20
Delivery capacity at max. back pressure
l/h 5.3 10.8 14,2 19,2
ml/stroke 0.59 1.20 1.58 2.13
Max. back pressure bar 15 954
Delivery capacity at average back pressure
l/h 6 11.3 14,7 19,7
ml/stroke 0.67 1.26 1.63 2.19
Average back pressure bar 8 532
Max. stroke frequency RPM 150
Suction height for non-gassing media mWS 3
Table 5-1: Output data
Information Value
MEMDOS SMART LB size
5 – 20
Permitted ambient temperature °C 0 – 45 (0 – 40 with PVC parts)*
Relative humidity % Max. 90
Max. sound pressure level dB(A) 51 – 56
Max. supply pressure mbar 800
Viscosity limits mPas 300** / 1000***
Adjustable dosing range % 0 – 100
Table 5-2: Operating conditions and limits

Technical specifications
Electrical data 13
© Lutz-Jesco GmbH 2014
Subject to technical changes
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Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB Operating Instructions
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5.2.1 Permitted media temperatures
5.3 Electrical data
5.4 Other data
Information Value MEMDOS SMART 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 5-3: Permitted media temperatures
Information Value
MEMDOS SMART LB size
5 10 15 20
Voltage supply 110 - 240 V, -10% / +5%. 50/60 Hz
Power consumption W 25
Table 5-4: Electrical specifications
Information Value
MEMDOS SMART LB size
5 10 15 20
Weight (with dosing head made of PVC, PP or PVDF) kg ~2,2
Weight (with dosing head made of stainless steel (1.4571)) kg ~ 3.3
Diameter of diaphragm mm 39 54
Electrical cable m 1.8 m (with mains plug)
Protection class IP65 (with covering caps on the connections)
Insulation class F
Valve connection G 5/8 external
Valve size DN4
Table 5-5: Other data

Dimensions
MEMDOS SMART LB 5, 10
14
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10100-02-V02
6 Dimensions
6.1 MEMDOS SMART LB 5, 10
Fig. 6-1: Dimensioned drawing of MEMDOS SMART LB 5, 10 with dosing head made of PVC, PP or PVDF (all dimensions in mm)
Fig. 6-2: Dimensioned drawing of MEMDOS SMART LB 5, 10 with dosing head made of stainless steel (1.4571) (all dimensions in mm)
Connection Material Size Nominal diameter L
Hose clip
PVC / PP / PVDF
4/6 mm DN4 31
1/4x3/8” 1/4" 34
6/9 mm DN6 34
6/12 mm DN6 15
Stainless steel (1.4571) /
PVDF
4/6 mm DN4 50
6/9 mm DN6 54
76~43~
~ 59
~ 180
120 LL
~ 250
195~
100 116
80

70
6,5 
227~
192~
~ 81
~ 17
L L~ 120
176~
~ 56
70
6,5 
100 116
80


Dimensions
MEMDOS SMART LB 15, 20 15
© Lutz-Jesco GmbH 2014
Subject to technical changes
140410
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB Operating Instructions
BA-10100-02-V02
6.2 MEMDOS SMART LB 15, 20
Fig. 6-3: Dimensioned drawing of MEMDOS SMART LB 15, 20 with dosing head made of PVC, PP, PVDF or stainless steel (1.4571) (all dimensions in mm)
~732
~5,102
~48~5,71
~35
~181
LL
84

70
6,5 
100 116
~ 130 (plastic) ~ 132 (stainless steel)
Connection Material Size Nominal diameter L
Hose clip
PVC / PP / PVDF
4/6 mm DN4 31
1/4x3/8” 1/4" 34
6/9 mm DN6 34
6/12 mm DN6 15
Stainless steel (1.4571) /
PVDF
4/6 mm DN4 50
6/9 mm DN6 54

Installing the Dosing Pump
Set up information
16
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10100-02-V02
7 Installing the Dosing Pump
7.1 Set up information
When installing, follow the basic principles below:
The valves must be vertical: Discharge valve at top, suction valve at
bottom. in this connection, pay attention to the arrow on the dosing
head. The dosing head must be aligned such that the arrow points
vertically upwards.
You should install the dosing pump at a convenient height for opera-
tion.
It must not be installed under the ceiling.
The frame of foundation for fixing the dosing pump must not be
subjected to jolts. The pump must be vibration-free and stable.
There must be enough free space in the area of the dosing head and
the suction and discharge valves for these parts to be easily disman-
tled if required. The entire space requirement for installation and
maintenance is approximately 1 m².
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.
The maximum ambient temperature must be complied with, see
“Operating conditions and limits” on page 12. If necessary, radiated
heat from surrounding equipment must be screened.
Avoid exposure to direct sunlight.
The dosing pump is not intended for use out of doors unless appro-
priate protective measures have been taken to prevent dust and
water from entering the housing.
For the dimensions of the fastening holes, refer to Chapter ”Dimen-
sions“ (see page 14).
The tightening torque for the fastening bolts is 1.5 - 2 Nm.
7.2 Installation examples
7.2.1 Installation on a wall console
Fig. 7-1: Installation on a wall console
To reduce the structure-borne noise, the dosing pump is bolted to the
wall bracket using rubber elements. The materials necessary for this are
included with the wall bracket.
7.2.2 Installation on the wall
Fig. 7-2: Installation on the wall
The dosing pump can be mounted to the floor or directly to the wall
without the need for additional elements. Turn the dosing head appro-
priately to ensure the flow direction of the medium through the dosing
head.
DANGER
Danger to life due to electric shock!
Electrically conductive liquid can enter pump housings, cable screw
connections and mains connectors.
Make sure that all protective measures comply at least with the
requirements of protection class IP65.
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.
Install the dosing pump such that it is accessible at all times.

Hydraulic installations
Dimensioning of the system 17
© Lutz-Jesco GmbH 2014
Subject to technical changes
140410
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB Operating Instructions
BA-10100-02-V02
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
cases, you must install hydraulic accessories to be able to use all the
functions that the MEMDOS SMART LB dosing pump offers, to guar-
antee functional safety or to achieve a high level of dosing precision.
8.1 Dimensioning of the system
The dosing pump’s technical data (see "Technical specifications" on
page 12) 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).
You must design the entire plant and its integrated dosing pump
such that escaping dosing medium due to the failure of wearing
parts such as the diaphragm, or to burst hoses does not lead to
permanent damage to parts of the system or the premises.
The leakage opening of the dosing head must be visible so that you
can detect a diaphragm rupture. It must be possible for the outflow
from the leakage drain to be on a free downwards gradient.
If you use hazardous dosing media, the installation must be designed
such that no disproportionately high consequential damages arise
due to dosing media escaping.
To avoid dosing errors after the end of the process, the dosing pump
must be locked hydraulically.
To allow you to easily inspect the pressure conditions in the system,
you should provide connections for pressure gauges close to the
suction and discharge valves.
WARNING
Caustic burns or other burns through dosing media!
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. Depending on the type and
hazardousness of the dosing medium, this can result in injury.
Make sure that the materials you are using are suitable for the
dosing medium.
Make sure that the lubricants, adhesives, sealants, etc. that you
use are suitable for the dosing medium.
WARNING
Caustic burns or other burns through dosing media!
If there is a diaphragm rupture, the dosing medium can escape in
an uncontrolled way. Depending on the type and hazardousness of
the dosing medium, this can result in injury.
Install a leakage drain.
WARNING
Caustic burns or other burns through dosing media!
The dosing pump can generate a pressure that is many times the
rated one. A blocked pressure line can lead to dosing medium
escaping. Depending on the type and hazardousness of the dosing
medium, this can result in injury.
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 due to uncontrollable piping or escap-
ing dosing media.
Install pulsation dampeners.
NOTICE
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 uncontrolled dosing processes, damage to the plant pipework
and to the dosing pump.
Ensure that the pressure on the discharge side is at least 1 bar
greater than on the suction side.
NOTICE
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.
Before bolting, grease the corresponding parts with a lubricant,
e.g. PTFE spray). Ensure that the lubricant is compatible with the
dosing medium.

Hydraulic installations
System piping
18
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10100-02-V02
8.2 System piping
The system piping must not exert any force on the connections and
valves of the dosing pump.
This means that steel piping should be connected to the dosing
pump by means of flexible pipe sections.
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 discharge valves.
The suction line should be kept as short as possible.
You should avoid intertwined hoses.
Avoid loops, since air bubbles can collect.
8.3 Aligning the dosing head
Fig. 8-1: Aligning the dosing head
When connecting the dosing lines to the dosing pump, you must
observe the direction of through-flow (see arrow ).The dosing head
must be aligned vertically.
The suction valve must always point downwards. Accordingly, arrow
and pressure valve always point upwards. This is irrespective of
the positioning of the dosing head to the drive.
8.4 Hydraulic connections
8.4.1 Connecting hose clips
Choose the hose connection according to the condition of the hose
(material, inner diameter, wall thickness) in order to ensure maximum
pressure resistance.
8.4.1.1 Sizes 4.6 and 6.9
Fig. 8-2: Hose clips 4/6 and 6/9 (internal and external diameters in mm)
Perform the following working steps:
1. Cut the hose  to length neatly and at an exact right angle.
2. Place a gasket that is suitable for the dosing medium between the
connection  and the valve.
3. Screw the connecting piece to the dosing pump's valve using
the union nut .
4. Thread the union nut and the clamping ring onto the hose.
5. Plug the hose all the way in to the grommet of connection
piece .
6. Push the clamping ring  onto the grommet of connection
piece  and screw it to the union nut .
7. Carry out the same procedure with the connection to the dosing
pump's other valve.
Hose clip connected.













4/6 6/9

Hydraulic installations
Hydraulic connections 19
© Lutz-Jesco GmbH 2014
Subject to technical changes
140410
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB Operating Instructions
BA-10100-02-V02
8.4.1.2 Size 6/12
Fig. 8-3: Hose clip 6/12 (internal and external diameter in mm)
Size 6/12 hose clips only have a union nut. It clamps the hose onto the
grommet of the connection piece and at the same time fastens on the
dosing pump's valve.
Perform the following working steps:
1. Cut the hose to length neatly and at an exact right angle.
2. Place a gasket that is suitable for the dosing medium between the
connection  and the valve.
3. Push the union nut and the cutting ring over the hose .
4. Press the end of the hose onto the grommet of connection
piece . You can do this more easily by moistening the end of the
hose on the inside or applying some lubricant to the grommet in the
cone area. You should push at least two thirds of the hose onto the
grommet of the connection piece .
5. Push the cutting ring over the hose into the cone area on the
grommet of connection piece .
6. Screw the union nut onto the valve of the dosing pump.
Hose clip connected.
8.4.2 Making the bonded connection
Fig. 8-4: Bonded connection
Perform the following working steps:
1. Cut the PVC tube to length.
2. Push the union nut  onto the tube.
3. Stick the bonded coupling sleeve  to the tube (follow the instruc-
tions of the adhesive manufacturer).
4. Screw the union nut  onto the valve of the dosing pump. Use a
gasket that is suitable for the dosing medium.
Bonded connection made.
8.4.3 Making the cemented connection
Fig. 8-5: Cemented connection
Perform the following working steps:
1. Cut the tube to length.
2. Cut the thread  onto the end of the tube.
3. Push the union nut  onto the tube.
4. Seal the thread .When choosing your sealing material, take into
account its resistance to material, temperature and pressure.
5. Screw the union nut  onto the valve of the dosing pump. Use a
gasket that is suitable for the dosing medium.
Cemented connection made.




Under normal conditions, you only need to screw the
hydraulic connections finger-tight. However, due to the mate-
rial settling, the pre-tension of the screw connection can
slacken. This means that you must re-tighten the screw
connection before carrying out commissioning.




i

Hydraulic installations
Connecting a leakage drain
20
Stepper Motor-driven Diaphragm Dosing Pump MEMDOS SMART LB
© Lutz-Jesco GmbH 2014
Operating Instructions
BA-10100-02-V02
8.5 Connecting a leakage drain
Lutz-Jesco GmbH dosing pumps are produced to the highest quality
standards and have a long service life. However, some parts are subject
to operational wear. This is the case particularly with the diaphragms
that are continuously subjected to forces during the suction and
discharge strokes and to the effects of the dosing medium.
If a diaphragm ruptures, the dosing medium starts to leak. This leakage
is drained via the leakage opening. On the flange of the dosing head,
there are three openings for this purpose. Depending on the alignment
of the dosing pump, the leakage is drained via the downward opening.
Fig. 8-6: Openings of the leakage drain
8.6 Connecting the dosing head venting facility
The dosing heads of the MEMDOS SMART LB 5 and LB 10 have an inte-
grated dosing head venting unit (except for dosing heads made of stain-
less steel).
For the procedure when venting, refer to “Venting the dosing pump” on
page 31.
Fig. 8-7: Dosing head venting facility with hose connection
Perform the following working steps:
1. Connect a 4/6 hose to the dosing head venting facility.
2. Route the other end of the hose into the dosing tank or a collecting
tank.
Dosing head venting facility connected.
NOTICE
Damage to drives due to effervescent media
If a hose is connected to the leakage drain and it is routed back into
the dosing tank, effervescent media can enter the drive and
damage it.
Collect the leakage in a collecting pan.
As an alternative, you can route the leakage back to the dosing
tank using a funnel. You should install the funnel at an adequate
distance from the leakage opening.