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Air or steam trapped in the suction

Check the presence of air or steam trapped. Check
suction line design.

Suction pipe inlet not sufficiently
submerged

Consult system designer

Insufficient speed

Consult

M PUMPS PROCESS

The motor stopped

Check the power of the motor. Check the status of the
motor.

EXCESSIVE FLOW

Causes

Remedies / actions

The head required is lower than that
provided by the pump

Reduce the speed of rotation, if possible; reduce the
impeller diameter; partially close the discharge valve.

OVERHEATING OR MOTOR STOP

Excessive pumped liquid density

Reduce the flow by closing the valve outlet partially

The pump is defused

Re-prime the pump. Refer to section 13.3 of this
manual. Check for air leaks in the suction line

Operating at very low flow

Check that flow is superior than minimum permitted.

The pump has seized or is about to seize.

Check the free rotation of the impeller. Check for
internal obstructions

The motor and pump are misaligned

Refer to section 14.1 of this manual

The motor bearings are damaged or
worn

Replace the motor bearings, investigate the causes of
breakage.

Motor under dimensioned

Mount a more powerful motor (check in advance with
your distributor

M PUMPS PROCESS

Motor overload threshold set incorrectly

Check

the security settings of the motor

The guard against the motor dry running
(where present) has failed or has been
set incorrectly.

Control flow decreases or fluid intake.

FUNCTIONING WITH NOISE DEFECTS AND/OR
VIBRATIONS

Causes

Remedies / actions

Insufficient inlet pressure, consequent
cavitation, insufficient lubrication of the
bearings (with mechanical damages if
the condition persists).

STOP IMMEDIATELY THE PUMP!

Refer to paragraphs 13.2 to 13.8 manual

Air or steam trapped in the suction

Check the presence of air or steam trapped. Check
suction line design.

Excessive Suction lift

Check that NPSHa>NPSHr, suction line losses on
strainer and fittings

Содержание CN SEAL-MV Series

Страница 1: ...Vertical Inline According to API610 11th edition CN SEAL MV series User Manual This copy of the manual is a translation of the italian version and both manuals must be always furnished together MODEL Bare Frame pump with motor CAUTION These instructions are intended for operators Pump installation by qualified personnel Use the pump by staff Carry out maintenance repair of the pump Read this instr...

Страница 2: ...nstallation In any case installation manual will take precedence over the pump manual THIS INSTRUCTION MANUAL is intended to guide those responsible for the installation operation and maintenance of M PUMPS PROCESS CN SEAL MV series pumps Please read it carefully before you install and operate your M PUMPS PROCESS pump Additional useful information can also be obtained contacting directly M PUMPS ...

Страница 3: ...ION MEASURES TO BE TAKEN 24 16 1 Description of the residual risks that remain 24 16 2 Protection measures to be taken by the user and instructions 24 16 3 Personal protective equipment to wear 25 17 OPERATIONAL LIMITS DESCRIPTION OF HAZARDS NOT EXCLUDED FROM THE SECURITY MEASURES TAKEN 25 17 1 Safety information present on the pump 25 18 INSTRUCTIONS AND PROCEDURES FOR THE TRAINING OF THE PERSONE...

Страница 4: ...bearing isolators if fitted 39 23 2 Pump reassembling 39 24 DECOMMISSIONING DISMANTLING AND DISPOSAL OF MATERIALS 39 24 1 Decommissioning 39 24 2 Demolition and dismantling 39 25 EXPLODED VIEW PART LIST 40 26 NOTES 44 27 APPENDIX A Register of maintenance and periodic checks of the pump 45 28 APPENDIX B Startup check list 46 ...

Страница 5: ... use the user with experience is the best form of qualification M PUMPS PROCESS reserves at any time the right to make changes deemed necessary to improve the pump taking care to update this manual as soon as possible This reflects the state of the art at the marketing pump In case of transfer of the pump the user is encouraged to report to M PUMPS PROCESS the address of the new owner to facilitat...

Страница 6: ...es to things or people for not having complied with the prohibitions set 3 WARRANTY Valid for one year from the date of the pump sale M PUMPS PROCESS do not assume any liability for any warranties explicit or implied nor as regards the possibility to sell or the suitability of the items supplied The warranty will not be applied if the repair and or maintenance was not carried out strictly in accor...

Страница 7: ...7 49 4 NAMEPLATE The pump for installation in ordinary environments has the nameplate on the side of the support as shown only the fields are compiled must be considered relevant and therefore valid for identification PUMP SUPPLIED WITH ELECTRIC MOTOR ...

Страница 8: ...Pag 8 49 Doc ISM0076_MANUALE_CN SEAL MV_ENG_REV04 DOCX Pump serial number s nr defines the type of components installed in the pump ...

Страница 9: ...Doc ISM0076_MANUALE_CN SEAL MV_ENG_REV04 DOCX Pag 9 49 ...

Страница 10: ...nated for high suction pressure applications Stiff Shaft Design limits maximum deflection at seal faces to 0 05 mm 0 002 in maximum for a long life of the pump 5 1 Applications Generally this model is ideal for clean liquids slightly contaminated without particles that can be magnetized The maximum working pressure of the plant the allowable temperature and the maximum rotation speed depends on th...

Страница 11: ...0 2660 1780 1780 1160 3860 2560 1900 920 940 460 1440 700 2560 1240 3x1 x13 2140 1420 2660 1780 1780 1160 3860 2560 1900 920 940 460 1440 700 2560 1240 3x2x5 2140 1420 2660 1780 1780 1160 3860 2560 1900 920 940 460 1440 700 2560 1240 3x2x6 2140 1420 2660 1780 1780 1160 3860 2560 1900 920 940 460 1440 700 2560 1240 3x2x8 2140 1420 2660 1780 1780 1160 3860 2560 1900 920 940 460 1440 700 2560 1240 3x...

Страница 12: ...0 3520 6260 6260 6x6x16 4980 4980 6220 6220 4100 4100 8960 8960 4600 4600 2360 2360 3520 3520 6260 6260 8x6x10 7560 4980 9780 6220 6220 4100 13840 8960 7060 4600 3520 2360 5160 3520 9420 6260 8x6x13 7560 4980 9780 6220 6220 4100 13840 8960 7060 4600 3520 2360 5160 3520 9420 6260 8x6x16 7560 4980 9780 6220 6220 4100 13840 8960 7060 4600 3520 2360 5160 3520 9420 6260 8x6x20 7560 4980 9780 6220 6220 ...

Страница 13: ...Doc ISM0076_MANUALE_CN SEAL MV_ENG_REV04 DOCX Pag 13 49 7 OPERATING LIMITS AND PERFORMANCES CN SEAL MV SERIES ...

Страница 14: ...er and dust if not immediately installed or used for long periods Stoppers closing the input and output connections of the fluid must not be removed until installation If provided with electric motor observe also the motor manufacturer s storage formality The maximum allowable temperature range during storage preservation and use must be between 15 e 40 C with humidity between 10 e 90 11 SHIPPING ...

Страница 15: ...ing of the surface bearings temperature It is always responsibility of the operator to keep low the temperature of the liquid so that not to superheat the pump in case of irregular pressure fluctuations and flow drop turn off the pump CAUTION Normally you should mount the pump horizontally If mounted vertically or inclined the pump or rather the suction flange shall be placed in the lowest point L...

Страница 16: ...g in the bearing housing outer cover Pump grease into the fitting in the bearing housing outer cover until grease just begins to extrude from the grease outlet Replug the grease outlet and turn the shaft several times by hand to distribute the grease in the bearings Thereafter re grease thrust bearings at 3000 hour intervals of operation Refer to Section 5 2 1 for proper grease type Pure Oil Mist ...

Страница 17: ...cating oil that will be used The reservoir is to be filled to appropriate level as illustrated in the picture below The oil level must be maintained at the correct level decreasing of oil level may cause overheating and failure of the bearings while exceeding the correct level can result in leakage The constant level oiler can be adjusted by changing the height of the cross arms which support the ...

Страница 18: ... arm Inspection Inspect the oil level in the bearing housing and the condition of the oil at least weekly Oil is always subject to progressive deterioration from use and contamination from dirt and moisture which is the cause of premature bearing wear For oil lubricated pumps fill the bearing housing with correct grade of oil to the correct level i e constant level oiler bottle standard configurat...

Страница 19: ...a proper assembly aimed at an optimal use of the pump you must follow these requirements pipes must be supported and kept in line regardless of the pump until its connections so that not to impose on it links must not be subjected to stresses during the job the maximum permissible forces and moments on flanges shall not exceed those listed in technical data inlet pipes should be constructed with a...

Страница 20: ...trical system Please read carefully the instructions of the manufacturer of the motor or the manual before you complete the installation Make sure that the motor doesn t start during maintenance jobs 14 5 Checks for the proper operation We recommend installing a pressure gauge on both inlet and outlet pipes to allow the operator to easily control the proper pump functioning in relation to the requ...

Страница 21: ... this manual in the sections committed to the functioning use and maintenance as well as being qualified to fully understand the features and to be able to identify the problems of the pump By carrying out the functions mentioned in the previous section and all controls listed in APPENDIX B and in the maintenance register the pump is ready for use 14 6 Self priming pumps and non self priming pumps...

Страница 22: ...re length Repeat the same check on both sides of the coupling at the height of the shaft Turn the motor shaft so that the bottom edge of the straight edge touches both halves of the coupling for the entire length Reinstall coupling guard 14 10 Alignment tolerances and coupling The maximum allowed tolerances for the two halves alignment of the coupling to be verified with the comparator are TYPE OF...

Страница 23: ... the nominal value quickly stop the pump and try staring Check the pump and piping to make sure that there is no leakage of liquid from the plant A noisy pump is a symptom of a malfunction that represent a failure in the short term A very low frequency and with a rumbling can indicate the state of cavitation an excessive noise of the motor can be caused by a wear of a bearing 15 3 Not permitted us...

Страница 24: ...ch certain situations of danger might present as a result of improper use are prohibited 16 RESIDUAL RISKS AND PROTECTION MEASURES TO BE TAKEN 16 1 Description of the residual risks that remain Despite adopted measures incorporated in the pump the main dangers associated with the use of the pump and the solutions identified are the followings Danger of sketches projection of process fluid that can...

Страница 25: ...he mental faculty alcoholic beverages medicines drugs etc Don t use without permission spare parts not identical to the originals or components not approved by M PUMPS PROCESS Don t perform any modification or structural intervention without the approval of M PUMPS PROCESS After shocks accidentally suffered by the pump check the pump integrity and perform a check to M PUMPS PROCESS After a long pe...

Страница 26: ...lectrical plants staff with experience in hydraulic installations For users professional staff trained in the instruction for use of this pump In case of emergency Alert who is close to the situation of danger even waving his arms Stop the pump by pressing the nearest emergency stop button 18 1 Recovery mode To return to normal operating conditions you must delete all the causes that have generate...

Страница 27: ... Find the cause of the failure by checking the section Most frequent drawbacks problems causes remedies residual risks The failure of a pumping plant can be attributed to A pump failure A failure or defect in the pipe A failure due to an installation or a start not correctly executed A a wrong choice of pump 19 2 Breakdown In the event of failure of pump alert verbally the staff present in the nea...

Страница 28: ... some in the fuel tank to prevent the formation of vortices Install a tank of sufficient capacity in the suction line to allow gas to drag Insufficient inlet pressure with the generation of cavitation and loss of efficiency Increase the static height at the suction Check that the intake is not blocked or are no bottlenecks Reduce the liquid temperature Increase the diameter of the intake pipes Red...

Страница 29: ...as seized or is about to seize Check the free rotation of the impeller Check for internal obstructions The motor and pump are misaligned Refer to section 14 1 of this manual The motor bearings are damaged or worn Replace the motor bearings investigate the causes of breakage Motor under dimensioned Mount a more powerful motor check in advance with your distributor M PUMPS PROCESS Motor overload thr...

Страница 30: ... 14 1 of this manual The pump was started while still rotating in the opposite direction for a previous start Stop immediately the pump and drain all the liquid from the discharge line before restarting OVERHEATING OF EXTERNAL BEARINGS bare shaft versions Lack of oil or wrong type of oil in the bearing frame Check the oil level fill up or empty and replace it if necessary Replace the bearings Exce...

Страница 31: ...revent the entry of water into the terminal of the motor DANGER Do not throw water on the pump hot components components can explode in case of sudden cooling generating projection of metallic material and leakage of hot fluid in pressure and hazardous to health Do not give strokes and pressures on the bearings you would cause the formation of micro cracks which can cause serious damages N Descrip...

Страница 32: ...pump If the pump is lubricated with oil bare shaft versions Remove the oil drain plug Drain the oil and collected it without dispersing into the environment Replace the drain plug If there are fluids hazardous to health wear personal protective equipment suitable before coming into contact with the liquid 20 3 Extraordinary maintenance The extraordinary maintenance operations concern the activitie...

Страница 33: ...that it has been cooled before disassembly The pump may have pumped liquid hazardous to health is therefore necessary to wear personal protective equipment Before to proceed with disassembling follow carefully the decommissioning instructions at paragraph 20 2 The activities of disassembly and maintenance of the pump should be conducted in full compliance with current health and safety regulations...

Страница 34: ...uid extreme care must be taken to ensure safety of operators when removing auxiliary piping or when draining pump Protective devices of suitable protective materials must be worn when draining the pump b Remove coupling guard 33 from bearing frame 32 by removing bolts and washers Remove bolts and nuts holding the guard together then remove the guard c Disassemble and remove coupling spacer in acco...

Страница 35: ...ing housing you might match mark these parts before separating them however the OUTLINE drawing shows the factory orientation To disassemble the pullout element soft cable or equivalent and lifting equipment should be handy and used for heavy parts Proceed as follows a Secure bearing housing 32 to workbench in a position that will allow impeller 7 and casing cover 9 to be pulled away from shaft 12...

Страница 36: ...you are able to pull half coupling off with a coupling puller then remove half coupling and key 18 1 m Remove outboard fan 28 1 and O rings 27 1 Loosen screw on inboard fan 28 2 and slide off shaft n Unscrew bearing housing end cover cap screws 29 1 and slide it off shaft with the labyrinth seal 5 remove the O ring 27 1 Now it is possible to extract bearing labyrinth seal 5 and replace it in case ...

Страница 37: ...the boiler feed the reactor feed or other such steam or water circuit all internal metal parts of the pump including the case should be cleaned with a nonpetroleum base cleaning agent such as alcohol or acetone or a steam cleaner that uses steam from demineralised water The basic concern should be to insure that the solvent is compatible with the pumpage Petroleum base agents such as dry cleaning ...

Страница 38: ...ldstraightened or replaced Application of heat to straighten shaft will cause more distortion The term soft faced V blocks refers to V blocks faced with metal that is softer than the shaft for example V blocks faced with copper 23 1 5 Gaskets and O rings After dismantling discard and replace 23 1 6 Bearings a It is recommended that bearings are not re used after any removal from the shaft In any c...

Страница 39: ...es Oil from these may cause staining adjacent to the bearings 23 2 Pump reassembling To reassemble the pump follow maintenance procedure enclosed in reverse order Clean each component before assembly make sure that all parts are free from dirt metallic particles etc 24 DECOMMISSIONING DISMANTLING AND DISPOSAL OF MATERIALS 24 1 Decommissioning For an eventual long time decommissioning it is advisab...

Страница 40: ...EXPLODED VIEW PART LIST PART LIST N DESCRIZIONE DESCRIPTION 1 Corpo pompa Pump casing 2 Piastra base corpo pompa Baseplate pump casing 3 1 Anello usura corpo pompa Pump casing wear ring 3 2 Anello usura corpo pompa Pump casing wear ring 4 1 Prigioniero Stud nut ...

Страница 41: ...rnizione Gasket 17 1 Dado Nut 17 2 Dado Nut 18 1 Chiavetta Key 18 2 Chiavetta Key 19 Rosetta di sicurezza Security washer 20 Ogiva Impeller nut 21 Tenuta meccanica Mechanical seal 22 Tappo sfiato Vent plug 23 Anello lancia olio Lubricating disk thrower 24 Oliatore a livello costante Constant level oiler 25 Rosetta della ghiera Lockwasher 26 Ghiera di bloccaggio Lock ring 27 1 O ring O ring 27 2 O ...

Страница 42: ...E DESCRIPTION 1 Corpo pompa Pump casing 2 Piastra base corpo pompa Baseplate pump casing 3 1 Anello usura corpo pompa Pump casing wear ring 3 2 Anello usura corpo pompa Pump casing wear ring 4 1 Prigioniero Stud nut 4 2 Prigioniero Stud nut 4 3 Prigioniero Stud nut 5 Ventola Fan ...

Страница 43: ...ing 15 Cuscinetto a sfere obliquo Oblique ball bearing 16 Guarnizione Gasket 17 1 Dado Nut 17 2 Dado Nut 18 1 Chiavetta Key 18 2 Chiavetta Key 19 Rosetta di sicurezza Security washer 20 Ogiva Impeller nut 21 Tenuta meccanica Mechanical seal 22 Tappo sfiato Vent plug 23 Lanterna cassa olio Bearing frame lantern 24 Cassa olio Bearing frame 25 Rosetta della ghiera Lockwasher 26 Ghiera di bloccaggio L...

Страница 44: ...Pag 44 49 Doc ISM0076_MANUALE_CN SEAL MV_ENG_REV04 DOCX 26 NOTES ...

Страница 45: ...ekly Replace the oil every 5000 hours 2 Internal bearings Check the condition of bushings sleeve bearings and thrust bearing if worn replace them reassemble using new gaskets After 2500 hours check any premature wear then every 5 000 hours or every year 3 Wear ring Check the status of the wear ring see the table of tolerances After 2500 hours check any premature wear then every 5 000 hours or ever...

Страница 46: ... received the Pump Curve GA Drawing Pump Data Sheet Motor Data Sheet and Wiring Diagram 6 Have you read through and understand the IOM manuals INSTALLATION CHECKS 1 Has the Pump s baseplate being properly level and firmly secured 2 Has the Pump and motor coupling being secured and aligned 3 Are Suction and Discharge Pipe line with Flexible Joints being Supported and Secured 4 Any undue Pipe loadin...

Страница 47: ...ed Air 6 Jog Start the motor Verify that the direction of rotation is correct AFTER START UP 1 Start the pump set and be sure that the discharge pressure is building up stop the pump if discharge pressure is not building up in short time and check the possible causes 2 Throttle or Set Discharge Valve to designed Duty Point Pressure and Flow Rate 3 Reading of Suction Pressure Discharge Pressure and...

Страница 48: ... observation for one or two hours COMMENTS REMARKS INSTALLATION REFERENCE PROJECT CONTACT CONTRACTOR ADDRESS PHONE NO FAX PUMP MODEL NO SERIAL NR MOTOR TYPE IMPELLER DIAMETER START UP BY FOLLOW UP REQD DATE SIGNATURE Please send this document duly completed to the e mail info mpumps it or by FAX at 39 0426 349126 ...

Страница 49: ..._ENG_REV04 DOCX Pag 49 49 M PUMPS PROCESS S R L Sede Legale Via Milite Ignoto 51 45019 Taglio di Po RO Italy Sede operativa Via dell Artigianato 120 45015 Corbola RO Italy Tel 39 0426 346304 Fax 39 0426 349126 E mail info mpumps it ...

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