HNP Mikrosysteme mzr-7240 User manual

Operating manual for micro annular gear pump
mzr-7240
HNP Mikrosysteme GmbH
Bleicherufer 25
D-19053 Schwerin (Germany)
Telephone: [phone]
Telefax: +49 385/52190-333
E-mail: [e-mail]
http://www.hnp-mikrosysteme.de
Last update: March 2019

Impressum
Original instructions
Copyright
HNP Mikrosysteme GmbH
Bleicherufer 25
D-19053 Schwerin
All rights, including translation, reserved.
Without prior explicit written permission of HNP Mikrosysteme GmbH no part
of this manual may be, copied, reproduced or processed.
This manual has been prepared with care. HNP Mikrosysteme does assume no
liability for any errors in this manual and resulting consequences. Likewise, no
liability is assumed direct or subsequent damages arising from an incorrect use
of the devices.
While using micro annular gear pumps, the relevant standards regarding the
specifications of this manual have to be followed.
Subject to change without notice.

Contents Operating manual for micro annular gear pumps mzr-7240
Last update: March 2019 Technical data subject to change without prior notice! i
Contents
1General Information 1
1.1 Use 1
1.2 Pump Model Designation 2
1.3 Technical data of the micro annular gear pump mzr-
7240 3
1.4 Measurements and flow charts 4
2Safety instructions 5
2.1 Safety symbols in this operating manual 5
2.2 Staff qualification and training 5
2.3 Safety-conscious work 6
2.4 Safety instructions for the operator 6
2.5 Safety instructions for maintenance, check and
assembly of the pump 6
2.6 Unauthorized pump conversions and spare part
manufacture 7
2.7 Improper modes of operation 7
2.8 General safety instructions 7
3Transport and intermediate storage 8
3.1 Shipment of the pumps and protection measures 8
3.2 Transport 8
3.3 Intermediate storage 8
4Description 9
4.1 Principe of the micro annular gear pumps 9
4.2 Construction 10
4.3 Materials and media 11
4.4 Fluidic connectors of mzr-7240 12
5Modular system 13
5.1 Fluidic seal module 14
5.2 Axial bearing module 16
5.3 Gear box module 16
6Optional motor versions 17
6.1 Brushless DC-motor as mzr-7241 18
6.1.1 Operation with the S-KB-4 control unit 19
6.2 Brushed DC-motor without encoder as mzr-7242 23
6.3 Stepper motor without encoder as mzr-7243 24
6.4 Stepper motor with encoder as mzr-7243 25
6.5 Brushless DC-motor with integrated controller 26
6.5.1 Technical data of the drive 3564K024BCS 26
6.5.2 Connection of the micro annular gear pump to the
power supply 28

Contents Operating manual for micro annular gear pumps mzr-7240
ii Technical data subject to change without prior notice! Last update: March 2019
6.5.3 Connection of the micro annular gear pump with
terminal box S-G05 with screw clamp terminal 38
7System integration 40
7.1 Check before the first assembly 40
7.2 Mounting of the micro annular gear pump 40
7.3 General instructions for the assembly of the liquid
supply network 40
7.4 Mounting of the micro annular gear pump 41
7.5 Assembly instruction for tubing and accessories 41
7.6 Filter selection and use 44
8Startup/shutdown of a mzr-pump 45
8.1 Preparing for operation 45
8.2 Startup of the micro annular gear pump 45
8.3 Flushing procedure after use 45
8.4 Shutdown of the micro annular gear pump 47
8.5 Conservation 50
8.5.1 Dismantling of the system 51
8.6 Trouble shooting 51
8.7 Return of the micro annular gear pump to the
manufacturer 52
9Software »mzr-Pump controller« 53
10 Software »Motion Manager« (Option) 56
11 Accessories 58
12 Non-liability clause 58
13 EC Directive 59
13.1 Electromagnetic Compatibility (EMC) 60
13.1.1 EMC Directive and Standards 60
13.1.2 Information on use as intended 61
14 Declarations of conformity 62
15 Problems and their removal 67
16 Service, maintenance and warranty. 70
17 Contact persons 71
18 Legal information 72
19 Safety information for the return of already
employed micro annular gear pumps and
components 73
19.1 General information 73

Contents Operating manual for micro annular gear pumps mzr-7240
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19.2 Declaration of liquids in contact with the micro
annular gear pump 73
19.3 Shipment 73
20 Declaration of media in contact with the micro
annular gear pump and its components 74
21 Supplement 75

1General Information Operating manual mzr-7240
Last update: March 2019 Technical data subject to change without prior notice! 1
1General Information
This operating manual contains basic instructions to be followed during
integration, operation and maintenance of a mzr®micro annular gear pump.
For this reason it is necessary to read it carefully before any handling of the
device. The present manual should always be kept at the operation site of the
micro annular gear pump.
In case assistance is needed, please indicate the pump type visible on the
housing.
1.1 Use
The micro annular gear pump mzr-7240 described in this manual are suitable
for continuous delivery and discrete dosage of water, watery solutions,
solvents, methanol, oils, lubricating liquids, paints and varnishes as well as
many other liquids.
!
If you intend to treat any aggressive, poisonous, or radioactive liquids, you
must conform to safety measures as according to the regulations in force. Any
project concerning handling of corrosive liquids should be previously discussed
with the pump manufacturer.
!
The micro annular gear pumps must not be used for invasive medical
applications, in which the liquid having had contact with the pump is re-
introduced to the body.
!
Micro annular gear pumps exclusively are provided for use in the industrial
area. A private use is excluded.
!
The micro annular gear pumps must not be used in aircrafts and spacecrafts or
other vehicles without prior consent of the manufacturer.
!
Data concerning resistance of the pumps to the manipulated liquids have been
elaborated according to the best of HNPM's knowledge. However, operating
parameters varying from one application case to another, no warranty for this
information can be given.
!
Information given in this manual does not release the customer from the
personal obligation to check the integrity, correct choice and suitability of the
pump for the intended use. The use of the micro annular gear pumps should
be conform with technical norms and regulations in force.
If you wish to receive more information than comprised in this manual please
contact directly HNP Mikrosysteme.

1General Information Operating manual mzr-7240
2Technical data subject to change without prior notice! Last update: March 2019
1.2 Pump Model Designation
This manual is valid for the micro annular gear pumps mzr-7241, mzr-7242,
mzr-7243 and mzr-7245 manufactured by HNP Mikrosysteme GmbH,
Bleicherufer 25, D-19053 Schwerin, Germany.
The bottom line of this manual shows issue and date of issue of the manual.

1General Information Operating manual mzr-7240
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1.3 Technical data of the micro annular gear pump mzr-7240
The following table shows the technical data of the micro annular gear pump
heads mzr-7240.
mzr-7240
Technical data
Displacement volume [µl] 48
Measurements [mm] L x W x H 150 x 100 x 42 *
Weight [g]
550 *
Internal volume [µl] 110
Materials pump head see chapter 4.3
Threaded fluid supply
connections
see chapter 4.4
Coupling bellow coupling *
Performance parameters
Flow rate Q [ml/min] min. 0,048
[ml/min] max. 288
[l/h] max. 17,28
Smallest dosage volume [µl] 5
Differential pressure range [bar] 0 – 5 bar (290 psi)*
Max. inlet pressure [bar] 1 bar (14 psi)
viscosity range of pumpable
min.
0,3
liquids
η
[mPas]
max.
10.000*
Precision CV [%] 1
Pulsation [%] 6
Operating temperature [°C] min. -5
max. 60
Ambient temperature [°C] min. -5
50
Storage temperature [°C] min. -5
max. 40
Legende: true / available CV Coefficient of Variation
* depending on the motor / axial bearing
table 1 Technical data of the micro annular gear pump heads mzr-7240
Warning The material properties of a liquid (e.g. viscosity, lubricating property, particle
content, corrosiveness) impacts the technical data and the lifetime of pumps.
Under appropriate conditions the characteristic values may be increased or
decreased.
Warning If you intend to operate the pump out of the range of the above given
specification, please consult the manufacturer. Modifications may be necessary
to ensure successful operation. Otherwise the pump or the system may be
damaged seriously.

1General Information Operating manual mzr-7240
4Technical data subject to change without prior notice! Last update: March 2019
1.4 Measurements and flow charts
figure 1 Measures of the micro annular gear pump mzr-7245 (picture with a programmable servomotor)
Liquid water Liquid methanol
0
50
100
150
200
250
300
0 1 2 3 4 5
Differential pressure [bar]
Flow rate [ml/min]
6000
5000
4000
3000
2000
1000
Speed [rpm]
Viscosity 1 mPas
Liquid water
0
50
100
150
200
250
300
01 2 3 4 5
Differential pressure [bar]
Flow rate [ml/min]
6000
5000
4000
3000
2000
1000
Speed [rpm]
Viscosity 0,58 mPas
Liquid methanol
Liquid oil, 16 mPas Liquid oil, 100 mPas
0
50
100
150
200
250
300
010 20 30 40
Differential pressure [bar]
Flow rate [ml/min]
6000
5000
4000
3000
2000
1000
Speed [rpm]
Viscosity 16 mPas
Liquid oil
0
50
100
150
200
250
300
010 20 30 40
Differential pressure [bar]
Flow rate [ml/min]
6000
5000
4000
3000
2000
1000
Speed [rpm]
Viscosity 100 mPas
Liquid oil
figure 2 Flow charts mzr-7240

2Safety instructions Operating manual mzr-7240
Last update: March 2019 Technical data subject to change without prior notice! 5
2Safety instructions
Comply with the general safety instructions listed in the safety section as well
as with the special safety instructions listed under the other main sections. All
legal and corporate safety instructions have to be obeyed.
2.1 Safety symbols in this operating manual
Please comply not only with the general safety instructions listed below, but
also with specific safety instructions mentioned in the following chapters.
Non respect of the safety instructions marked with the following signs
represents danger to people:
Danger symbol High voltage symbol
!
Safety symbol according to
DIN 4844 – W9
Safety symbol according to
DIN 4844 – W8
Non compliance with the safety instructions marked with the following sign:
Warning
represents a risk of damage to the micro annular gear pump.
Operating instructions machined directly on the pump such as the indication of
liquid input and output should be followed and kept in a clearly readable
condition.
2.2 Staff qualification and training
The staff operating, servicing, inspecting and assembling the pumps must
evidence the appropriate qualification for these works. Areas of responsibility
and competence as well as monitoring of the staff must be precisely regulated
by the decision maker. If the personnel do not have the necessary knowledge,
they must be trained and instructed accordingly. If necessary, this can be
implemented by the supplier or the manufacturer on behalf of the operator.
Furthermore, the operator in charge must ensure that the content of the
present manual has been fully understood by the personnel.

2Safety instructions Operating manual mzr-7240
6Technical data subject to change without prior notice! Last update: March 2019
2.3 Safety-conscious work
The safety instructions listed in this operating manual, applicable national
regulations concerning accident prevention as well as internal work, operation
and safety regulations of the operator must be complied with.
2.4 Safety instructions for the operator
The surface temperature of the motor under full load may exceed 60°C. If
needed, this surface should be protected on site against contact in order to
avoid skin burns.
The drive should be protected against dust, water vapor condensation,
humidity, splash water, aggressive gases and liquids. Please provide for
adequate air ventilation and thus cooling of the motor.
The micro annular gear pumps mzr-7240 must not be used in areas exposed to
explosion risks or in the proximity of inflammable gases and vapors.
Possible leaks of dangerous liquids (for example from the shaft sealing) should
be guided away in a way not to represent any danger for the personnel and the
environment. The pump should be regularly checked for possible leakage. All
legal requirements in this matter should be followed.
The existing protections against contact for the moving parts of the pump (such
as for example the coupling) must not be removed during operation.
Take care that all risks resulting from the electric energy are excluded. (For
details please refer to the instructions provided by the authorities in charge or
your power supplier.)
Warning Please insure, that the totality of the liquid supply accessories such as tubes,
hoses, filters etc. are free from dust or dirt particles. Impurities such as metal,
plastic or glass particles may impair or damage the pump leading to its failure.
Warning Please, operate the pump with a filter featuring 10 µm or smaller pores. It will
protect the pump.
2.5 Safety instructions for maintenance, check and assembly of the pump
As a rule all maintenance work on the device should be performed when the
device is at a standstill. The shutdown procedure described in this manual must
be followed. Pumps delivering liquids hazardous to health must be
decontaminated. Immediately after the work had been completed all safety
equipment and protection measures should be applied.
Before starting the operation, please take into notice the instructions listed in
the chapter 8.

2Safety instructions Operating manual mzr-7240
Last update: March 2019 Technical data subject to change without prior notice! 7
Warning Should a malfunction of the pump occur, do not dismantle the pump on your
own but contact one of HNP Mikrosysteme's service staff for professional
assistance.
2.6 Unauthorized pump conversions and spare part manufacture
Conversions or modification to the device are only permitted with prior consent
of the manufacturer. Original spare parts and accessories authorized by the
manufacturer ensure safety. The use of other parts will annul the liability of the
pump manufacturer for any resulting consequences.
2.7 Improper modes of operation
The safety of operation of the delivered device can only be insured by correct
use, as described in chapter 1. The limit values given in this manual must not be
exceeded in any case.
2.8 General safety instructions
Please observe the following safety instructions
!
The pump may operate at high pressures. For this reason please use only the
delivered accessories and ensure that the employed fittings and tubing have
been prescribed and approved for these pressures.
!
In order to decrease the pressure, provide the system with a pressure control
valve directing the excess liquid to the storage tank or back to the suction side.
In the case of blockage of the pressure side the operating pressure can
multiply, this can lead to the damage of downstream components.
!
At a standstill, the liquid may flow through the pump in the direction of the
falling pressure. In order to avoid this unwanted movement, please integrate
non-return valves (see accessories).
!
Protect the micro annular gear pump and the electric drive against strokes and
shocks.
!
Under normal working conditions the shaft sealing rings integrated in the
pump prevent the liquid from leaking out of the device. The micro annular
gear pumps are "technically leak-proof" however not "hermetically sealed"
which means it may occur that gases or liquids enter to or escape from the
pump.
The allowed operating parameters of the drive should not be exceeded. In
particular an incorrect polarity setting of the supply voltage may lead to
damage of the control unit.
Warning Please insure, that the totality of the liquid supply accessories such as tubes,
hoses, filters etc. are free from dust or dirt particles. Impurities such as metal,
plastic or glass particles may impair or damage the pump leading to its failure.
Warning Please operate the pump with a filter featuring 10 µm or smaller pores. It will
protect the pump.

3Transport and intermediate storage Operating manual mzr-7240
8Technical data subject to change without prior notice! Last update: March 2019
3Transport and intermediate storage
3.1 Shipment of the pumps and protection measures
The pumps leaving the factory are secured against corrosion and shocks. The
inlets and outlets of the pumps are protected with plastic plugs in order to
prevent any foreign bodies from penetrating into the device.
3.2 Transport
In order to avoid any damage related to transport, the package must be
protected against shocks. HNP Mikrosysteme guarantees, that all goods leave
the factory in the best condition. Any noticed damage should be reported to
the concerned forwarding agent, authorized dealer or to HNP Mikrosysteme, as
manufacturer.
3.3 Intermediate storage
Following points concerning pump storage should be observed:
−Necessary conservation procedure (see also chapter 8.5)
−The protective plugs must be left screwed in
−The pump should not be stored in humid places
−For storage temperature - refer to chapter 1.3 of the present manual

4Description Operating manual mzr-7240
Last update: March 2019 Technical data subject to change without prior notice! 9
4Description
4.1 Principe of the micro annular gear pumps
Micro annular gear pumps are reciprocating and rotary pumps and are
provided with external toothed internal rotor and annular toothed external
rotor which are slightly eccentric bearing to each other (see figure 3). Both
rotors with their cycloid indenting are at any time interlocked and form a
system of several sealed pumping chamber during rotation. With rotation of
the rotors around their offset axis, the pumping chambers increase on the
induction side, while at the same time the delivery side of the pump decreases.
Between the kidney-like in- and outlet a homogeneous flow rate is generated.
internal
rotor
external
rotor
delivery sideinduction side
inlet outlet
figure 3 Assemble of the micro annular gear pump
figure 4 Function principle of the micro annular gear pump
Reciprocating and rotary pumps have a direct allocation to the fed amount of
the displacement volume Vg of the pump and its actuator’s number of
revolutions n. The displacement volume describes the volume, which is
theoretically fed with each revolution. The coherence of the flow rate referring
to the formula (= volumetric flow rate) Qof the pump is:
nVQ gVol ⋅⋅=
η
The volumetric efficiency
η
Vol describes the coherence of the actual flow rate
from the theoretical resulting value. Differences occur according to leaking, as
the sealing on the inside of the pump is done over a gap. The volumetric
efficiency is dependent on the media and the pressure against which it has to
be fed.

4Description Operating manual mzr-7240
10 Technical data subject to change without prior notice! Last update: March 2019
Example: The pump mzr-7240 feeds with its displacement volume of 48 µl with
3000 RPM and a volumetric efficiency of 100 % referring to the above-
mentioned formula the flow rate of 144 ml/min. The following table shows the
volumetric displacement in dependence to the number of revolutions (
η
Vol =
100 %).
Speed [rpm] Q [ml/min] Q [ml/h]
500 24 1440
1000 48 2880
2000 96 5760
3000
144
8640
4000 192 11520
5000 240 14400
6000
288
17280
table 2 Theoretical flow rate of the micro annular gear pump
The pressure, which the pump has to generate, is given by the construction of
the fluidic system and the results of the hydrostatic pressure and the hydraulic
resistants (given by tubes, contractions etc.).
The viscosity of the pumping medium has an important influence on the
volumetric efficiency. The volumetric efficiency increases with higher viscosity
according to the smaller disengagement through the gaps of the pump.
Cavitation is an effect, which can result in a specific ceiling speed. The reason
for this is the static pressure reaching the steam pressure of the liquid in the
inlet port of the pump. In this state an increase of speed does not result in an
increased flow rate. The formation of gas prevents a sufficient feeding of the
pump. With increasing viscosity of the liquid (e.g.> 10.000 mPas), the ceiling
speed is lower.
The specific feature of the mzr-pumps is their highly precise design, as well as
the guarantee of high accumulator pressure and high accuracy in flow rate and
dosage. Therefore, space width and transverse space width of the rotors as well
as the interspace to the adjacent case parts are in the range of just a few
micrometers. This precision is at the same time the criterion to achieve a
volumetric efficiency in the range of approx. 100 %.
4.2 Construction
The micro annular gear pump is composed of the pump head, the coupling
unit, the drive and the angle support (see figure 5).

4Description Operating manual mzr-7240
Last update: March 2019 Technical data subject to change without prior notice! 11
coupling unit
drive
angle support /
bearing bracket
micro annular gear pump head
liquid inlet /
suction side (S)
liquid outlet /
delivery side (D)
power
supply cable
figure 5 Construction of the micro annular gear pump mzr-7245-ha-v M5 +A
4.3 Materials and media
Wetted parts mzr-7240 pump head
Pump housing see table 4
Rotors, shaft, bearing see table 4
Shaft sealing graphite-reinforced PTFE,
316L spring
Static sealing see table 5
table 3 Construction materials of the wetted parts
Designation Material
Rotors, shaft, bearing
Material
Pump housing
-hs tungsten carbide Ni-based stainless steel 316 L (1.4404,
1.4435)
-ha tungsten carbide Ni-based Aluminum
table 4 Construction materials
Designation
Material static sealing
-v FPM (fluorelastomer)
-f FFPM (perfluoroelastomer)
-e
EPDM
table 5 Construction materials

4Description Operating manual mzr-7240
12 Technical data subject to change without prior notice! Last update: March 2019
The resistance of the construction materials to the delivered liquids should be
verified by the operator for each individual application. Pumps handling non-
lubricating liquids have shorter service lives.
4.4 Fluidic connectors of mzr-7240
Fluidic connectors Construction mzr-7241 Construction mzr-7245
S lateral 1/8" NPT internal
thread
M4 Tubes, square, screw
M5 Tubes, round, bearing bracket -
table 6 Fluidic connectors
The micro annular gear pump head has an inscription on the front side. The
liquid inlet connection is marked with the letter »S«, the liquid outlet
connection with the letter »D«. An arrow indicates the inherent turning
direction of the shaft.
In order to prevent foreign bodies from penetrating into the pump, the liquid
inlet and outlet are protected with plastic plugs or screws. Please remove them
before you assembly the pump.

5Modular system Operating manual mzr-7240
Last update: March 2019 Technical data subject to change without prior notice! 13
5Modular system
The spectrum of applications of the modular modular series may be expanded
by using different additional modules. The modules allow for special
applications, which could otherwise not be accomplished with a standard
pump version. The modules may be combined with each other and with almost
all available pump heads and motor versions.
−Fluidic seal module prevents possible chemical reactions between the
delivered liquid and the surrounding environment
−Axial bearing module enables the pump liquids with increased pressure
−Gear box module increases the torque of the drive allowing to deliver high
viscosity liquids and provides for a constant operation of the motor at low
speeds.
The configuration of a given pump version should in each case be discussed
with consideration to the specific requirements of the application. Additional
customized modules may be designed on demand.

5Modular system Operating manual mzr-7240
14 Technical data subject to change without prior notice! Last update: March 2019
5.1 Fluidic seal module
The module can be employed for liquids which tend to crystallize, when air
contact is given. The module prevents reactions by covering the outcoming
shaft by a fluidic ambience.
Fluidic seal module
liquid outlet
(delivery side)
sealing liquid
outlet
sealing liquid
inlet
liquid inlet
(suction side)
liquid supply tube
cartridge
Figure 6 Design of the micro annular gear pump with fluidic seal module (figure with mzr-7245 S +S)
(layout on the right: with the optional sealing liquid delivery set)
The module can be applied for liquids which tend to react or crystallize in
contact with gases such as oxygen or water. The use of a fluidic seal module
has to be confirmed with the pump manufacturer.
Functioning of fluidic seal module
Based on the pump design in the rotary shaft seal there is a liquid boundary
film where the liquid is in contact with the ambient. Here small amounts of
ambient humidity or oxygen can penetrate into the pump getting over the
sealing lip. To prevent penetrating molecules from outside into the pump but
also hazardous substances coming out of the pump the fluidic seal module was
designed.
For this reason a second rotary seal is added to the pump which is located in
the fluidic seal module. Between the two rotary seals a fluidic chamber (see
figure 7) is formed which is filled with a sealing liquid compatible to the
pumped liquid. The fluidic seal module has two ports opposite to each other
for filling and degassing. A pressure head can be applied to the sealing liquid to
assure a support of the sealing function. In certain cases the sealing can be
flushed.
The sealing liquid will dilute the pumping liquid during operation with a
dilution ratio of approx. 1:1,000,000. The sealing liquid has to be compatible
with the delivered liquid and has to be determined in interdependence. A