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Debem KM70, Installation, Operating And Maintenance Manual

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Debem KM70 Installation, Operating And Maintenance Manual Download Page 4

4

 

KM70 

ENG_DEBEM S.r.l. 

Rev. 01A-EN 

01/03/2021 

 

 

5.6    Measures to take for periods of long inactivity  
5.7    Running the pump after a long period of stop  

 

6. Pump characteristics  

6.1    Description and operation of the pump  
6.2    Reference regulations  
6.3    Minimum and Maximum Flow  

 

7. Technical data  

7.1    Technical characteristics  
7.2    Component/material details and drawing  

 
 

8. Maintenance  

8.1    Maintenance interval  
8.2    Parts to be checked  
8.3    Replacing wear parts  

 

9. Malfunctions and solutions  

9.1  Malfunction table: possible causes and solutions  
9.2  Disposal  

 

Summary of Contents for KM70

Page 1: ...FULLY READ THIS MANUAL BEFORE USING OR REPAIRING THIS PRODUCT MAGNETIC DRIVE PLASTIC CENTRIFUGAL PUMP KM70 Installation Operating and Maintenance Manual DEBEM SRL Via del Bosco 41 21052 Busto Arsizio VA ITALY www debem com MOM_KM70_REV 01A EN ...

Page 2: ......

Page 3: ...es 2 8 1 Interruption of the cooling flushing 2 8 2 Loss of synchrony between inner and outer magnet 2 8 3 Liquid leaks 2 9 Operating range 3 Handling and storage 3 1 Packaging 3 2 Handling 3 3 Shipping 3 4 Receiving 3 5 Storage 3 6 Return to supplier 4 Installation 4 1 General instructions 4 2 Foundations 4 3 Correct installation 4 4 Pump installation diagram 4 4 1 General information 4 4 2 Sucti...

Page 4: ... 6 1 Description and operation of the pump 6 2 Reference regulations 6 3 Minimum and Maximum Flow 7 Technical data 7 1 Technical characteristics 7 2 Component material details and drawing 8 Maintenance 8 1 Maintenance interval 8 2 Parts to be checked 8 3 Replacing wear parts 9 Malfunctions and solutions 9 1 Malfunction table possible causes and solutions 9 2 Disposal ...

Page 5: ...rchaser has the responsibility to Check that the pump motor unit and any accessory are suitable for the working environment Provide suitable personal protective equipment to the operators Inform users of the allowed use DEBEM S r l may update or edit this manual at any time and without previous notice to correct typos inaccurate information or updated products These changes must be added to new ed...

Page 6: ...arranty terms For the warranty to remain fully valid throughout the period indicated in the warranty conditions it is necessary that construction and or material flaws are reported in writing within 8 days of receipt of the goods all contractual obligations of the buyer have been fulfilled Alleged or confirmed product defects do not justify non fulfilment of contractual obligations all installatio...

Page 7: ...or review WARRANTY ACCEPTANCE will not be granted unless the defective part is returned or appropriate photographs and a written report are provided All defective parts replaced as provided for in this document become the property of DEBEM S r l The buyer shall not be required to deliver a defective part to DEBEM S r l if the part was destroyed as a result of its defect or of any defect covered by...

Page 8: ... only if the pump is used in accordance with the contents of this manual The limit values indicated in this manual or in any other documentation concerning the pump must never be exceeded Personnel involved in the installation operation and maintenance of our pumps must be properly qualified to perform the operations described in this manual DEBEM S r l shall not be held liable for the training le...

Page 9: ... the pump and its operation may be at risk ELECTRICAL HAZARD indicates a hazard caused by electronic equipment MAGNETIC FIELD HAZARD indicates the presence of a hazard caused by magnetic fields GENERAL HAZARD indicates the presence of a hazard for persons working on the pump unit PROHIBITED persons with pacemakers must not go near strong magnetic fields magnetic drive pumps ...

Page 10: ...aining and flushing the pump After servicing start the pump again following all the safety instructions described in chapter Starting and stopping Do not run the pump dry Start the pump only when it is completely filled and the delivery valve is almost com pletely closed limiting this condition to the time that is strictly necessary to start the pump In the event dirty liquids are to be pumped if ...

Page 11: ... operation of the supplied product can be ensured only if the instructions of this manual or of the contractual documentation are strictly followed if further clarifications are needed please contact DEBEM S r l The pump or pump unit and any configuration variation must be run according to the limits listed and or described in the relevant contractual documentation provided with the pump Contact D...

Page 12: ...emperature limits of the mechanical parts with those of the pumped liquid 2 5 Safety information for the customer operator The operator must always use Personal Protective Equipment PPE as required by the current safety regulations for work environments with regards to the time and location of the work Please ALWAYS strictly observe the instructions of this manual and of the contractual documentat...

Page 13: ...on in the chapter Starting and stopping cooled to room temperature not under pressure The pump maintenance inspection and installation personnel must be specialised and qualified as well as informed of the content of this manual Any modification to the pump is allowed only after prior authorisation by DEBEM S r l Use only genuine spare parts or spare parts authorised by DEBEM S r l Any damage due ...

Page 14: ...ithout cavitation Add an allowance of 3 dB to allow for the tolerance of measuring tools Fig 7 Noise chart in logarithmic scale The major sources of noise are not connected with the pump We would like to remind you that the most frequent sources include liquid turbulence in the plant cavitation not dependent on the manufacturer The user must provide adequate protective equipment if the sources of ...

Page 15: ...able monitoring equipment 2 8 1 Interruption of the cooling flushing The inner magnet is cooled by the process fluid through flushing holes located on the bushings support Due to some characteristics of the transported liquid e g the high viscosity flushing could be interrupted causing a dangerous in crease in temperature 2 8 2 Loss of synchrony between inner and outer magnet Overloading overheati...

Page 16: ...ase we discourage any people wearing a pacemaker from coming close to the area near the external magnet marked by the relevant symbol in particular for pumps equipped with very powerful magnets where the coupled electric motor is very powerful 2 9 Operating range The pump or pump unit operating ranges for pressure temperature flow rate speed and power are listed in the Data Sheets and or in the co...

Page 17: ... pallets weighing more than 20Kg use proper equipment suitable for the weight indicated on the shipping document When lifting freely suspended loads harness the crate as illustrated below Fig 8 Monobloc execution Fig 9 Handling To ensure correct handling and lifting of crates cages cartons or pallets refer to the specific symbols shown on the packaging Fig 10 Symbols on the packaging 3 3 Shipping ...

Page 18: ...manometer and fixtures dismounted Pumps that have been used for handling toxic or corrosive fluids must be flushed and cleaned before being returned to the manufacturer Always complete and enclose a truthful and full certificate of decontamination when returning to DEBEM S r l the pump motor unit or individual parts see form at the end of manual Always indicate any purging and safety measure obser...

Page 19: ...r fixing of pump motor unit Once the pump motor unit is in position level it using metal shims placed between the feet and the surface on which it stands The shims must be placed right next to the foundation bolts and they must be sufficiently wide to cover the largest possible surface Check that each foot of the pump motor unit stands steady on each of these Under no circumstances should this pos...

Page 20: ...th equal to at least 10 times the suction Ø 14_Minimum level equal to at least 3 5 times the diameter of suction 15_Compensation coupling 16_Cleaning piping delivery side 17_Cleaning piping suction side The check valve protects the pump from possible water hammering The shut off regulation valve excludes the pump from the line and also adjusts the flow If there is a foot valve do not install a del...

Page 21: ... the flanges or threaded fittings The suction and delivery lines and the installed valves or filters must be supported and anchored next to but not on the pump so that no strain is transmitted to the body of the pump The forces and moments transmitted to the pump by the piping system must not exceed the allowable forces and moments see relevant section in the chapter Technical Data The piping must...

Page 22: ... diameter one size greater than that on the suction side of the pump in case of longer pipes The plant must have a Npsha available Npshr required The NPSHd value of the system must always be at least 0 5 m above the NPSHr of the pump value re ferring to water at 20 C RECOMMENDED to eliminate air set up the pipe as shown in the following diagram Fig 13 Recommended installation of suction piping AVO...

Page 23: ...e Flow rates can be deduced by reading the pressures converted into meters and then compared with the characteristic curves These optional instruments can signal different pump malfunctions including ac cidental valve closing no liquid overloads etc for details relating to the positioning of the instruments and for further information pls contact DEBEM S r l If the temperature of the pumped liquid...

Page 24: ...ate maintenance operations on the pump use flexible cables allowing the lantern motor unit to slide see figure below Fig 15 Lantern motor unit sliding the type of connection is specified on the motor data plate which may be Y star or Delta based on the power supply of the motor see figure below Fig 16 Electrical connections of the motor WARNING Always have the electrical connections installed by a...

Page 25: ... valve works properly to prevent back flow of liquid thus emptying the suction pipe with consequent disconnection of the pump check the direction of rotation the motor must turn in the same direction as the arrow shown on the pump Since all the DEBEM S r l pumps turn clockwise make sure that the motor fan turns clockwise too view facing the motor fan check that the motor rotates freely by turning ...

Page 26: ... up or after long periods of downtime ro tate the pump manually 12 times through the motor fan close coupled pumps or by the coupling long coupled pumps This in order to ensure the lubrication of the seal faces avoiding the bonding and or seizing up of the seal faces 3 Start the electric motor 4 Gradually open the delivery valve until reaching the desired output or at least one fourth of the total...

Page 27: ...ped liquid boils and the plastic parts deteriorate cavitation which causes damage to the impeller water hammer which can cause the internal ports and isolation shell to break abnormal vibrations which can cause the screws to loosen and affect the durability of bearings unstable working points which cause undue stress on the mechanical parts A series of accessories are available in order to ensure ...

Page 28: ... hour before re moving the pump from the plant 5 7 Running the pump after a long period of stop It is always recommended to run the pump at least once a month or once eve ry three months as a minimum for approximately 5 10 mins This avoids the formation of sediments inside the pump as well as preventing the elastomers from loos ing their elasticity and the mechanical seal from hardening if the pum...

Page 29: ...gether with the casing and the gaskets it seals the pumped liquid from atmosphere without the need of a mechanical seal 6 2 Reference regulations Compliant with 2006 42 EC According to Sub ISO 2858 Optional flanges UNI 1092 PN16RF ANSI 150RF optional 6 3 Minimum and Maximum Flow Unless specified otherwise in the characteristic curves or on the data sheets the following applies Qmin 0 1 x Qbep SHOR...

Page 30: ...ar abs In the event of high thermal excursion between the temperature of the pumped liquid and the room tem perature condensation may form inside the lantern When transferring high temperature liquids take into account the motor operating temperature limit When transferring low temperature liquids condensation may form on the magnet and volute casing In this case de humidify the area COMPONENT MAT...

Page 31: ...ower UNI 1751 Ø12 344 Lantern 554 2 Washer UNI 6592 Ø12 516 Antispark ring 920 12 Nut UNI 5588 M12 346 Lantern flange 914 2 Screw TCCE UNI 5931 M10x16 347 x Motor flange 901 12030 Screw TE UNI 5739 M12x30 211 Pump shaft 901 12110 Screw TE UNI 5739 M12x110 510 1 Thrust bearing 504 Spacer 512 Thrust bearing wear ring 901 12100 Screw TE UNI 5739 M12x100 157 Isolation shell 158 Isolation shell cover 8...

Page 32: ...r coupling Tighten or re place the fastening screws Is the magnet vibrating during operation Check balancing and magnet motor coupling Tighten or replace the screws 2 ISOLATION SHELL Code 157 DETAILS ACTIONS Does the internal diameter of the isolation shell show signs of chemical aggression Contact DEBEM S r l in case of faults Is the isolation shell visibly broken Stop the pump and replace the is...

Page 33: ...cing wear parts The following components may impair the correct operation of the pump if not replaced regularly the gasket of the isolation shell 412 1 the bushing locking O rings 412 2 the bearing locking rings 512 the bearing sleeves 529 the static shaft 211 and the thrust bearings 510 Limit size values are shown in the following table To order spare parts please specify the DIN code of the comp...

Page 34: ...he pump and bleed any air in the pipes volute casing X High head loss Set the operation point in accord ance with the pump characteristic curves Check that the pumped liquid is free from impurities Check the diameter of the impel ler it may be too small X X X Air in the pump or pumped liquid The pump or piping are not fully bled filled Check the piping seal and the gaskets of the volute casing re ...

Page 35: ...r rectly so as not to be mechani cally strained and check the alignment Support the pipes properly X The impeller is not properly balanced Balance and or clean the impeller X Loose connecting bolts and screws Check the bolts and screws are tightened periodically X Liquid temperature not compliant with data sheet or contractual documentation Check the temperature of the pump pumped liquid Contact D...

Page 36: ...ople or the environment 1 Wear protective clothing when operating on the pump 2 Before disposing of the pump Collect any leaked fluids and dispose of them in compliance with current regulations Purge any residual fluids 3 Separate the materials of the pump plastic metal etc disposing of them in compliance with current regulations ...

Page 37: ...DEBEM SRL Via del Bosco 41 21052 Busto Arsizio VA ITALY www debem com MOM_KM70_REV 01A EN ...

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