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1 Startup/shutdown of a mzr-pump  

Instruction for startup/shutdown 

1.5

 

Problem shooting 

If the pump stops operating abruptly or has difficulties with starting operation, 
please undertake the following steps: 

Try to liberate the micro annular gear pump: 

 

by turning the potentiometer knob back and forth or by connecting an 
analog voltage 

 

via the control software 

 

by pressing with a syringe a suitable flushing liquid (see table 1 and table 2
through the micro annular gear pump 

 

by changing the operating direction of the pump. 

If these measures turn out to be ineffective, please contact the service staff of 
HNP Mikrosysteme and send the pump back to the manufacturer for 
inspection. 

 Warning 

 

You should under no condition 

try to disassemble the pump by yourself. This 

may cause damage to the pump components and consequently annul your 
warranty claims. 

1.6

 

Return of the micro annular gear pump to the manufacturer 

For the return of a micro annular gear pump and components that have already 
been employed, please follow the instructions: 

 

drain any remaining rests of the delivered liquid from the pump 

 

flush the pump with an adapted solvent 

 

remove the filter elements from integrated or loosely delivered filters 

 

protect all openings against dust with the delivered protective plugs or 
screws 

 

return the pump in its original packing 

The service personnel which carries out the repair should be informed about 
the condition of the already used micro annular gear pump. This is done by 
means of the "Declaration of media in contact with the micro annular gear 
pump and its components" (see chapter 3). This form may also be downloaded 
from the web site 

www.hnp-mikrosysteme.de/download

!

 

The "Declaration of liquids in contact with the micro annular gear pump and 
its components" must imperatively be filled in. The nature of liquid which 
entered into contact with the micro annular gear pump and its components 
must be specified.  
In case of non-compliance, the sender will be liable for any resulting injure to 
persons or any object damage. 
 

Last update: March 2015 

Technical data subject to change without prior notice! 

Summary of Contents for MZR

Page 1: ... for startup shutdown of mzr pumps HNP Mikrosysteme GmbH Bleicherufer 25 D 19053 Schwerin Phone 0385 52190 346 Fax 0385 52190 333 E mail info hnp mikrosysteme de http www hnp mikrosysteme de Last update March 2015 ...

Page 2: ...f the micro annular gear pump 4 1 4 1 Conservation 6 1 4 2 Dismantling of the system 7 1 5 Problem shooting 8 1 6 Return of the micro annular gear pump to the manufacturer 8 2 Safety information for the return of already employed micro annular gear pumps and components 9 2 1 General information 9 2 2 Declaration of liquids in contact with the micro annular gear pump 9 2 3 Shipment 9 3 Declaration ...

Page 3: ...e put into operation by turning on the potentiometer knob or by sending a nominal external voltage signal Start the filling in of the pump at low or middle speed 1000 3000 rpm Warning Avoid dry operation of the pump over a longer time The pump should be filled in before it is put to operation 1 3 Flushing procedure after use After each service the micro annular gear pump should be carefully flushe...

Page 4: ...or lead to corrosion and as a consequence impair the work of the micro annular gear pump Warning Please make sure that the pump components and particularly O rings and sealing are resistant to the employed flushing liquid see table 2 Warning The flushing liquid solvent and the recommended duration of the flushing procedure depend on the delivered liquid see table 2 The indicated flushing liquids a...

Page 5: ...me table 1 Selection of the flushing liquid solvent and the duration of the flushing procedure depending on the delivered liquid Warning Please make sure that the pump components and particularly O rings and sealing are resistant to the employed flushing liquid see table 2 Shaft sealing O ring material Flushing liquid PTFE graphite reinforced UHMWPE FKM EPDM FFKM acetone 0 0 3 0 0 benzene 0 3 1 3 ...

Page 6: ...le free flushing liquid solvent as described in the chapter 1 3 After the flushing procedure decrease speed of the pump to 0 rpm Fill the pump with a suitable conservation liquid see chapter 1 4 1 Remove the pump from the system see chapter 1 4 2 By proceeding as shown in the diagram see figure 3 you may prepare the pump for a longer standstill Last update March 2015 Technical data subject to chan...

Page 7: ...resistant Selection of conservation liquid CL CL adequate Is the CL compatible with pump Is the CL compatible with the last FL Nature of the CL Let the gas through the pump Fill in CL Desinstall the pump Close the liquid ports End of conservation procedure New operation after the conservation procedure liquid yes no no no no no no no yes yes yes yes yes yes gaseous no yes Flushing cycle End of flu...

Page 8: ...hecked by the user as to their compatibility and suitability The figure 3 presents a diagram of conservation agent selection Remark This diagram is repeated as a part of the figure 2 shutdown procedure of the micro annular gear pump After the cleansing procedure the pump should be filled with a suitable conservation agent You will find a choice of possible conservation agents in the table 3 Select...

Page 9: ...not a solvent may leave deposits after drying out air compressed air is not a solvent may leave deposits after drying out Legend good suitable o satisfactory bad inadequate table 3 Selection of the conservation agent In order to prevent dust particles and foreign bodies from penetrating into the pump or the conservation agent from leaking out please secure the liquid input and output openings with...

Page 10: ...mp and components that have already been employed please follow the instructions drain any remaining rests of the delivered liquid from the pump flush the pump with an adapted solvent remove the filter elements from integrated or loosely delivered filters protect all openings against dust with the delivered protective plugs or screws return the pump in its original packing The service personnel wh...

Page 11: ... works must be informed about the condition of the micro annular gear pump before starting any work on the device The Declaration of media in contact with the micro annular gear pump should be filled in for this purpose The declaration should be sent directly to the supplier or to the company designated by the supplier A second copy of the declaration must be attached to the shipment documents 2 3...

Page 12: ... pump which had contact with dangerous substances could not be properly cleansed prior to the shipment we reserve the right to entrust a specialized company with the cleansing of the device The return of the pump in the original packing is purposive This measure is necessary in order to protect the employees and the delivery staff Nature of the delivered liquid explosive toxic toxic byproducts car...

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