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7 Maintenance and repair

NMH/NMV High Pressure Centrifugal Pump

47

DANGER

Only perform the inspection when the sys-
tem is switched off and secured.

DANGER

Risk of death from electric shock!

►

Only allow work on the electrical systems to

be carried out by a qualified electrician.

►

Ensure that the supply of electricity is

switched off and secured against reactiva-
tion when performing all maintenance work.

7.3.3 Servicing the mechanical seals

Mechanical seals feature a functional drop

leak (

à

manufacturer information)

Mechanical  seals  are  self-adjusting  mechani-
cal  shaft  seals  that  require  no  maintenance.
The  mechanical  seal  must  never  run  dry.  En-
sure therefore that the pump is filled.

Do not reinstall mechanical seals after remov-
ing them for inspection or maintenance. Re-
place them with new seals, or relap the contact
surface.

Ø

In the event of heavy leakage, replace

the mechanical seal with auxiliary
seals and check that the auxiliary op-
erating systems function properly.

7.3.4 Servicing the gland packing

Gland  packing  consists  of  a  number  of  com-
pression-moulded  rings  in  a  stuffing  box.
Gland  packings  can  be  adjusted  by  hand  with
tools.

WARNING

Excessive tightening places too much ten-
sion on the packing rings. This leads to
wear and ultimately loss of tightness in the
stuffing box.

NOTICE

Material damage due to dry running!

►

Ensure that the pump is properly filled.

If using a gland packing, this should drip slight-
ly  during  operation.  The  gland  may  only  be
tightened  slightly.  Leakage  is  always  required
if using pure graphite packing rings. If leakage
is  too  high  after  a  longer  period  of  operation,
evenly tighten the nuts on the gland by 1/6 of a
rotation,  and  observe  the  leakage.  If  it  is  no

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Содержание NMH 32

Страница 1: ...2 Original Operating Manual NMH NMV High Pressure Centrifugal Pump OSNA Pumpen GmbH Brückenstrasse 3 49090 Osnabrück Germany Phone 49 541 1211 0 Fax 49 541 1211 220 Internet http www osna de E mail info osna de ...

Страница 2: ......

Страница 3: ... parts 11 2 5 Unauthorized modes of operation 11 2 6 Special hazards 11 2 6 1 Explosion area 11 2 6 2 Hazardous pumping media 11 2 6 3 Noise emissions 12 3 LAYOUT AND FUNCTION 13 3 1 Labeling 13 3 1 1 Pump type labeling 13 3 1 2 Type plate 13 3 2 Scope of delivery of an NMH NMV high pressure centrifugal pump 14 3 3 General information 14 3 4 Technical data 15 3 5 Operating point 15 3 6 Minimum out...

Страница 4: ... 3 Configuring supports and flange connections 31 5 5 4 Determining nominal widths 31 5 5 5 Determining pipeline lengths 31 5 5 6 Optimizing changes in cross section and direction 32 5 5 7 Providing safety and monitoring systems recommended 32 5 6 Attaching the pipelines 32 5 6 1 Installing auxiliary pipelines 32 5 6 2 Installing the suction pipe 33 5 6 3 Installing the pressure pipe 33 5 6 4 Chec...

Страница 5: ...king 47 7 4 Sending the pump to the manufacturer 48 7 5 Disassembling the pump 49 7 6 Ordering spare parts 51 8 FAULTS AND TROUBLESHOOTING 52 9 APPENDIX 55 9 1 Additional ATEX instructions 55 9 1 1 Safety 55 9 1 2 Explosion protection marking 56 9 1 3 Installation and connection 57 9 1 4 Operation 59 9 1 5 Maintenance and repair 59 9 2 Spare parts list for constant operation over two years as per ...

Страница 6: ... phase motors with star delta switch 35 Table 13 Measures depending on the behavior of the pumping medium 40 Table 14 Measures in the event of operational interruption 40 Table 15 Measures following longer shut down times 41 Table 16 Stuffing box dimensions 48 Table 17 Measures for return 49 Table 18 Fault number allocation 52 Table 19 Troubleshooting table 54 Table 20 Temperature classes 56 Table...

Страница 7: ...d 19 Figure 14 Lifting an NMV centrifugal pump 19 Figure 15 Mounting material for complete units 23 Figure 16 Mounting material for pump with open shaft end 23 Figure 17 Aligning the base plate 24 Figure 18 Positional alignment of the shafts 26 Figure 19 Directional alignment of the shafts 26 Figure 20 Aligning the motor with adjustment screws 28 Figure 21 Functional and operating elements 29 Figu...

Страница 8: ...nterrupted operation The operating specification does not take local safety regulations into account The owner bears full responsibility for compliance with these including on the part of the assembly personnel used This operating manual is part of the pump is valid for all type series mentioned describes safe and proper use in all phases of operation 1 2 Target groups Target group Task System own...

Страница 9: ...oid death or injuries Instruction 1 2 Instruction with multiple steps Condition Reference Information note Table 4 Symbols and their meanings 1 5 Copyright changes The intellectual property and all copyrights related to this technical documentation remain exclusively with OSNA Pumpen GmbH All rights reserved in particular the right to repro duction and distribution of this documentation including ...

Страница 10: ...y other use must be agreed with the manufacturer The temperature of the pumping me dium must not exceed 140 C Avoiding obvious misuse examples Observe the operating limits of the pump for temperature pressure flow rate and speed The use of pumps in ATEX zones is subject to additional specifications related to cor rect and proper use Do not operate the pump when the fittings are closed when the ope...

Страница 11: ...rmit any activity that endan gers personnel or uninvolved third par ties In the event of a safety relevant fault stop the pump immediately and have the fault rectified by responsible per sonnel In addition to this documentation en sure compliance with the statutory or other regulations for safety and acci dent prevention as well as the rele vant standards and specifications of the respective count...

Страница 12: ...specialist technical person nel assembly maintenance and repair work work on the electrical systems Only allow personnel undergoing train ing to perform work on the pump under the supervision of specialist technical personnel Safety mechanisms Provide the following safety mecha nisms and ensure that they function correctly for moving components contact protection for the pump installed by the cust...

Страница 13: ...nly permitted following consultation with the manufacturer Original spare parts and acces sories authorized by the manufacturer help ensure safety The manufacturer bears no liability for the consequences of the use of other parts 2 5 Unauthorized modes of opera tion The operational safety of the machine is only guaranteed when it is used for the intended purpose according to the operating manual 2...

Страница 14: ... Drive power in kW Noise emissions in dB A 1450 min 1 2900 min 1 0 75 50 58 1 1 53 62 1 5 55 62 2 2 56 63 3 0 58 65 4 0 60 66 5 5 64 70 7 5 65 71 11 0 68 73 15 0 69 74 18 5 69 74 22 0 70 75 30 0 71 75 37 0 72 76 45 0 73 77 55 0 73 79 75 0 74 81 90 0 74 82 110 0 75 83 132 0 76 84 Table 5 Sound pressure level Low noise motors can be provided if the ex pected noise values exceed the permitted lim its...

Страница 15: ... series 2 Horizontal configuration 3 Vertical configuration 4 Nominal diameter of discharge nozzle mm 5 Max impeller diameter mm 6 Number of stages 3 1 2 Type plate Standard configuration Figure 2 Standard version type plate ATEX configuration Figure 3 ATEX version type plate Key 1 Year of production 2 Delivery head m 3 Power requirements kW 4 Speed min 1 5 Flow rate m h 6 Pump number 7 Pump type ...

Страница 16: ...e scope of delivery corresponds to the scope indicated in the order Please check that the delivery is complete upon receipt Notify the delivery company of any transport damage immediately Please also refer to our condi tions of sale and delivery If using other motor brands please ensure that the motors have the following drive torques as a multiple of the nominal torque 3 3 General information The...

Страница 17: ...uction side Pressure side NPS PN NPS PN 32 50 40 32 40 40 65 40 40 40 50 80 40 50 40 65 100 40 65 40 80 125 40 80 40 Table 8 Pump series flange sizes Drive unit NMH 50 and 60 Hz electric motor diesel motor or turbine NMV Electric motor with IEC flange V1 con figuration or hydraulic motor with spe cial flange 3 5 Operating point In order to reach the required operating point it may be necessary to ...

Страница 18: ...ngs in a stuffing box Gland packings can be adjusted by hand with tools Figure 8 Gland packing Mechanical seals are mechanical shaft seals with internal flushing of the rotating seal rings self adjusting Figure 9 Mechanical seal The technical dry running properties of gland packing and mechanical seals are extremely limited For this reason avoid dry running Ensure that the pump is vented before co...

Страница 19: ...3 Layout and function NMH NMV High Pressure Centrifugal Pump 17 Figure 10 Pressure side external flushing connection optional Figure 11 Suction side external flushing connection optional ...

Страница 20: ...packaging material in line with the applicable local regula tions 4 1 2 Lifting Transport the pumps carefully and secure them to prevent damage If using a horizontal pump transport the entire unit using ropes as shown in Figure 12 pg 18 do not secure the ropes on the motor eyelets Transport vertical pumps as shown in Figure 14 pg 19 DANGER Risk of death or crushed limbs from falling transported go...

Страница 21: ...or a long period of time If the pump is de commissioned for a longer period of time ap proximately 2 to 3 months ensure that it is fully drained 6 2 Decommissioning pg 39 4 3 Storage NOTICE Material damage due to incorrect storage Ensure that the pump is correctly stored 1 Close all openings with blank flanges blind plugs or plastic covers 2 Ensure that the storage area meets the following conditi...

Страница 22: ...hen storing for longer than 6 months Check all elastomers round seals shaft seal rings gaskets and gland packing for elasticity and replace if necessary 4 4 Disposal Plastic parts may be contaminated by toxic or radioactive pumping media If this is the case cleaning is not sufficient WARNING Risk of poisoning and environmental dam age from pumping medium Use personal protective equipment when perf...

Страница 23: ...allation loca tion Ensure that the installation location meets the following conditions pump is freely accessible from all sides sufficient space for installing removing piping as well as for maintenance and repair work in particular for in stalling removing the pump and motor no effects from external vibrations on the pump bearing damage protection against frost Temperature C Relative humidity In...

Страница 24: ...ly NOTICE Damage to bearings due to high water pressure or splashing water Do not use water jets or steam jet cleaners to clean the bearing areas NOTICE Damage to seals due to incorrect cleaning agent Ensure that the cleaning agent does not corrode the seals 1 Choose the cleaning agent according to the area of use 2 Dispose of preservatives in line with the local regulations 3 If storing for longe...

Страница 25: ... insert bearing plates on the left and right side next to the mounting material between the base plate base frame and the foundation Provide additional bearing plates if the distance between the mounting materials is greater than 800 mm Ensure that all bearing plates sit solidly Base plates with a width greater than 400 mm must be filled out after mounting with a vibration dampening mortar up to t...

Страница 26: ...o the required height and system dimensions as fol lows using steel shims Use one steel shim 2 to the left and right of each foundation screw 1 If the distance between the an choring holes is greater than 700 mm add additional steel shims 3 on each side of the base plate in the middle 5 Ensure that the base plate and the steel shims lie flat 6 Check the maximum permitted height deviation 1 mm m la...

Страница 27: ... uneven ness in the mounting surface using spacers on each screw 4 Check the pump unit for tensions us ing a straitedge 5 Fill out the inside of the base plate if provided Knock on the base plate to prevent cavities 5 2 3 Assembling the motor Only necessary if the pump unit is complet ed at the installation location Ensure that the shaft is cleaned of anti rusting agent and that both coupling halv...

Страница 28: ...f different thicknesses under the pump or motor feet as appropriate Afterwards tighten the fastening screws of the pump and motor a Position A ruler placed on the coupling must lie flat on both halves offset by 90 around the circumference à Figure 18 pg 26 Figure 18 Positional alignment of the shafts b Direction The axial distance x between the halves of the coupling must be equal around the entir...

Страница 29: ...NGER Never operate the pump without the cou pling guard 5 3 2 Vertical configuration Vertical pumps are always delivered with a complete coupling assembled on the pump 1 Apply a very thin layer of molybdenum disulphide e g Molykote to the shaft ends on the pump 2 Insert the keys 3 If using fitting device remove the rub ber buffer and heat the two halves of the coupling to around 100 C 4 Push the p...

Страница 30: ...ns with shims with adjustment screws 5 4 1 Aligning the motor with shims 1 Align the motor so that the two halves of the coupling are precisely flush us ing shims if necessary 2 Check the alignment of the motor to the pump 3 If the height displacement persists re peat the alignment process 4 Afterwards tighten the motor screws 5 4 2 Aligning the motor with adjust ment screws Observe the spindle s ...

Страница 31: ... pipe declining to the pump in order to prevent the formation of air bubbles Support the pipes immediately before the pump and connect without tension Ensure that the weight of the pipes does not strain the pump If using short pipes the nominal widths must be at least equal to those of the pump connec tions If using long pipelines determine the cost effective nominal width on a case by case basis ...

Страница 32: ... seal If the pumping medium is contaminated we recommend flushing the shaft seal This pre vents contamination from penetrating the shaft seal and therefore also prevents excessive wear Sealing and flushing fluid pressure The pressure of sealing and flushing fluid should always be 1 bar above the pump oper ating pressure Sealing the shaft seal Sealing the shaft seal prevents air entry at high sucti...

Страница 33: ...pipes acting on the pump Do not exceed the permitted values 1 Calculate the forces in the pipeline and observe all operating conditions cold warm empty filled pressurized unpressurized change in the flange position 2 Ensure that the pipeline supports have permanent low friction properties and do not seize up due to corrosion 5 5 4 Determining nominal widths Keep the flow resistance as low as possi...

Страница 34: ...ilter in the suction pipe 2 Install a differential pressure display with contact manometer to monitor contamination Preventing backflow Install a non return valve between the dis charge nozzle and the shut off valve to prevent medium backflow after the pump is switched off Enabling separation and blocking of the pipelines For maintenance and repair work 1 Provide shut off devices in the suction an...

Страница 35: ...he suction side fitting when operating the pump and do not use it to control the flow rate 5 6 3 Installing the pressure pipe 1 Remove transport and sealing caps on the pump 2 Prevent air pockets by routing the pipeline constantly declining to the pump 3 Ensure that the gaskets do not pro trude inwards 5 6 4 Checking for lack of tension in the pipeline connection ü Pipeline routed and cooled 1 Dis...

Страница 36: ...ntenance work DANGER Risk of death due to rotating parts Use personal protective equipment when performing work on the pump Prevent the keys from being slung away when checking the direction of rotation Ensure sufficient clearance to rotating parts 5 7 1 Connecting the motor Observe the manufacturer information for the motor Only use approved motors when operating pumps in ATEX zones Install a mot...

Страница 37: ...g 35 5 7 2 Earthing the pump Always earth pumps in ATEX zones Ensure that motors couplings and monitoring devices provided by the customer meet the specified category and temperature class in the respec tive ATEX zone à 9 1 2 Explosion protection marking pg 56 Only use touch guard elements e g coupling guard made from electrically conductive materials The motor must meet the require ments of the a...

Страница 38: ...r example The use of pumps in ATEX zones is subject to additional requirements à 9 1 4 Operation pg 59 6 1 2 Filling the pump ü Auxiliary operating system ready ü Preservative removed à 5 1 3 Removing the preservative pg 22 1 Fill the pump and suction pipe with pumping medium 2 Open the suction side fitting 3 Open the pressure side fitting 4 Open the auxiliary operating systems if present and chec...

Страница 39: ...dicates the specified direction of rota tion Before checking the direction of rotation se cure the pump against activation 1 Decouple the motor from the pump 2 Switch the motor on and immediately off again 3 Check whether the motor s direction of rotation corresponds to the arrow on the pump 4 If the direction of rotation is different reverse this by swapping two phases 5 Recouple the motor with t...

Страница 40: ...lished sealed and free of tension ü Any auxiliary operating systems ready All safety mechanisms installed and function tested Pump correctly prepared filled and vented DANGER Risk of injury due to running pump Do not touch the running pump Do not perform any work on the running pump DANGER Risk of poisoning or injury due to spurting pumping medium Use personal protective equipment when performing ...

Страница 41: ...il the operating point is reached 5 Ensure a temperature increase of 50 C h if using the pump with hot pump ing medium 6 After the first pressure and tempera ture loads check whether the pump is tight 7 If using hot pumping media switch the pump off briefly when at operating temperature check the coupling alignment and realign the motor if necessary à 5 4 Aligning the motor pg 28 8 Set a slight le...

Страница 42: ...and containers Remains fluid non corrosive Remains fluid corrosive Drain pump and contain ers Apply pre servative to pump and containers Table 13 Measures depending on the behavior of the pumping medium Pump to be Measure Shut down for longer period Take measures according to the pumping medium Drained Close suction and pressure side fittings Disassembled Deactivate the motor and se cure against u...

Страница 43: ...is sioning flush it thoroughly before recommis sioning Perform all further work steps in line with 6 1 Commissioning pg 36 Take the following measures before recom missioning following operating interruptions of 1 year Shut down time Measure 1 year Check visually for leaks 2 years Replace elastomer seals gaskets round seals shaft seal rings and gland packings Replace anti friction bearings Table 1...

Страница 44: ...hem with new seals or relap the contact surface 6 5 2 Gland packing Gland packing consists of a number of com pression moulded rings in a stuffing box Gland packings can be adjusted by hand with tools WARNING Excessive tightening places too much ten sion on the packing rings This leads to wear and ultimately loss of tightness in the stuffing box Replace the gland packing if the leaks in the stuffi...

Страница 45: ...f poisoning or injury due to hazard ous pumping media Use personal protective equipment when performing work on the pump Ensure that the pump runs smoothly and quiet ly at all times Maximum permitted room tem perature 40 C The mechanical seal displays only limited or invisible leakage losses in vapor form It re quires no maintenance The reserve pumps must be activated once per week in order to ens...

Страница 46: ...the elastic elements of the coupling promptly should you notice signs of wear over time The bearings have a high quality lithium soap grease Under normal operating conditions this is sufficient for 15 000 operating hours or 2 years If operating under unfavorable condi tions such as high room temperature high humidity dusty air aggressive industrial at mospheres etc check the bearings at an earlier...

Страница 47: ...onditions It is therefore not possi ble to make any general statements about the service life DANGER Risk of death from electric shock Only allow work on the electrical systems to be carried out by a qualified electrician Ensure that the supply of electricity is switched off and secured against reactiva tion when performing all maintenance work DANGER Risk of injury due to hot pump compo nents Use...

Страница 48: ...ace temperature of the motor and pump Any changes in running noise or vibrations Deformation of the touch guard el ements and distance to the haz ardous parts Function of the monitoring devices Always earth pumps in ATEX zones 7 3 1 Anti friction bearings and grease lubrication Relubricate after no more than 7500 operat ing hours or 1 year under normal operating conditions 1 Clean the anti frictio...

Страница 49: ...ction or maintenance Re place them with new seals or relap the contact surface Ø In the event of heavy leakage replace the mechanical seal with auxiliary seals and check that the auxiliary op erating systems function properly 7 3 4 Servicing the gland packing Gland packing consists of a number of com pression moulded rings in a stuffing box Gland packings can be adjusted by hand with tools WARNING...

Страница 50: ... new ring with the gland rotate each new ring until the joints are offset by 90 4 Slightly tighten the nuts on the gland by hand alternating sides Ensure that the pump shaft rotates easily Figure 26 Suction side stuffing box standard Pump type Dimensions mm D d S NMH NMV 32 51 35 8 NMH NMV 40 51 35 8 NMH NMV 50 63 43 10 NMH NMV 65 65 45 10 NMH NMV 80 85 60 12 Table 16 Stuffing box dimensions 7 4 S...

Страница 51: ...tion for return At customer Return defective component to manufacturer At manufacturer Flush pump Send complete pump not disassembled to man ufacturer At manufacturer with guarantee claim Only when using hazardous pumping medium flush pump Send complete pump not disassembled to man ufacturer Table 17 Measures for return 7 5 Disassembling the pump DANGER Risk of death from electric shock Only allow...

Страница 52: ...lly drained flushed and de contaminated ü Electrical connections disconnected and motor secured against reactivation ü Pump cooled down ü Coupling guard removed ü When using couplings with spacer spacer removed ü Auxiliary operating system shut down depressurized and drained ü Manometer removed together with supply lines and holders During disassembly Precisely mark the installation location and p...

Страница 53: ...arts Please have the following information to hand when ordering spare parts à type plate cross section diagram Customer number if available Short designation of the pump series Order number pump number Year of production Parts number Designation Quantity Delivery method Delivery address ...

Страница 54: ...n fitting X X Inlet suction pipe not completely opened Open fitting X X X X Inlet suction pipe pump or suction strainer blocked or encrusted Clean inlet suction pipe pump or suction strainer X X X Cross section of the inlet suction pipe too tight Enlarge cross section Clean suction pipe of encrustations Fully open fitting X Transport sealing cap not re moved Remove transport sealing cap Disassembl...

Страница 55: ...ller Consult manufacturer and adjust impeller diam eter X X X Geodetic delivery head pipeline resistance and or other resistanc es lower than designed Throttle flow rate with pressure side fitting Observe minimum flow rate here Machine down impeller Consult manufacturer and adjust impeller diam eter X X Viscosity lower than indicated Machine down impeller Consult manufacturer and adjust impeller d...

Страница 56: ...chanical seal worn Replace mechanical seal X Defective casing seal Replace casing seal X Shaft sleeve penetrated Replace shaft sleeve and round seal X X X X Pump under tension Check pipeline connections and pump fastening Check coupling alignment Check support foot fastening X X Coupling incorrectly aligned Align coupling X X X X Motor runs on 2 phases Check fuse and replace if necessary Check wir...

Страница 57: ... the explosion protection marking Observe the enclosed data sheet Ensure the following at all times Pump earthed earthing screw lo cated on the bearing housing of the pump à 5 7 2 Earthing the pump pg 35 No contact between the coupling and the coupling guard Suction and pressure pipe inside of the pump seal area and auxil iary systems completely filled with pumping medium at all times Authorized s...

Страница 58: ...100 100 T6 100 t 85 85 Table 20 Temperature classes DANGER Only use the pump up to the temperature class indicated on the type plate The surface temperature of the pump must always be lower than the lowest ignition tem perature of the temperature class Ignition protection class The ignition protection class describes the type of measures taken to prevent a surrounding explosive atmosphere from ign...

Страница 59: ...gh II others 0 G 20 D 1 Persistent for long periods or frequently Very high II others 1 G 21 D 2 Occasional arising fault must not become source of ignition High II others 2 G 22 D 3 Unlikely if so then rarely and briefly surface temperature must not become an ignition source in normal operation Normal Table 23 Equipment groups areas of use zone category 9 1 3 Installation and connection The requi...

Страница 60: ... tandem configu ration Retrofit a fill level gauge for the supply tank if necessary Retrofit a pressure gauge for the sealing medium if the tem perature difference between the sealing medium and the tem perature class 50 Kelvin Single mechanical seal with quench and secondary seal with lip Table 24 Possible devices for monitoring self warming due to dry running Monitoring the system for parameter ...

Страница 61: ...aded No operation when the suction side fit tings are closed No operation even briefly when start ing when the pressure side fittings are closed 9 1 5 Maintenance and repair Maintenance intervals shorten under diffi cult operating conditions Performing measures Replace the anti friction bearing in the motor in line with the manufacturer specifications Replace the anti friction bearing and the plai...

Страница 62: ... parts 211 Pump shaft with small parts 1 1 2 2 2 3 30 230 Impeller set 1 1 1 2 2 3 30 321 Radial grooved ball bearing set 1 1 2 2 3 4 50 370 Foil bearing 1 1 2 2 3 4 50 412 Round seal set 4 8 8 8 9 12 150 433 Mechanical seal set 2 3 4 5 6 7 90 461 Gland packing set 4 6 8 8 9 12 150 504 Correction ring 1 1 2 2 3 4 50 524 Shaft wearing sleeve 2 2 2 3 3 4 50 525 Interstage sleeve 2 2 2 3 3 4 50 Table...

Страница 63: ...9 Appendix NMH NMV High Pressure Centrifugal Pump 61 9 3 Cross sections Figure 27 Cross section of NMH with mechanical seal ...

Страница 64: ...9 Appendix 62 NMH NMV High Pressure Centrifugal Pump Figure 28 Cross section of NMH with gland packing ...

Страница 65: ... Pump shaft 525 Spacer sleeve 230 1 Impeller 550 Disc 230 2 Impeller 551 Support disc 321 Radial grooved ball bearing 636 Grease nipple 350 Bearing housing 360 1 Bearing cover 360 2 Bearing cover 901 1 Hexagon head bolt 901 2 Hexagon head bolt 902 Stud 400 Gasket 903 1 Screwed plug 412 1 O ring 903 2 Screwed plug 412 2 O ring 905 Tie bolt 433 Mechanical seal 920 1 Hexagon nut 920 2 Hexagon nut 921...

Страница 66: ...9 Appendix 64 NMH NMV High Pressure Centrifugal Pump Figure 29 Cross section of NMV with mechanical seal ...

Страница 67: ...9 Appendix NMH NMV High Pressure Centrifugal Pump 65 Figure 30 Cross section of NMV with gland packing ...

Страница 68: ...0 1 Impeller 525 1 Spacer sleeve 230 2 Impeller 525 2 Spacer sleeve 545 Bearing bush 550 Disc 321 Radial grooved ball bearing 341 Motor stool 350 Bearing housing 636 Grease nipple 360 Bearing cover 370 Bearing shell 861 1 Pump side coupling half 861 2 Motor side coupling half 400 Gasket 412 1 O ring 412 2 O ring 901 1 Hexagon head bolt 433 Mechanical seal 901 2 Hexagon head bolt 901 3 Hexagon head...

Страница 69: ...fficial Journal of the European Union Niederspannungsrichtlinie 2014 35 EC This declaration shall cease to be valid in the event of any modifications to the machine and or its protective mechanisms not agreed with us and approved in writing Applied harmonized standards and their references in the Official Journal of the European Union DIN EN 809 2012 DIN EN ISO 12100 2011 DIN EN ISO 13732 2008 DIN...

Страница 70: ...ponds to the following protection class II 2 G c T3 This declaration shall cease to be valid in the event of any modifications to the machine and or its protective mechanisms not agreed with us and approved in writing Applied harmonized standards and their references in the Official Journal of the European Union DIN EN ISO 13463 1 2009 DIN EN ISO 13463 5 2011 DIN EN ISO 15198 2007 Authorized repre...

Страница 71: ...losed device Type ______________________________________________________________ Serial no ______________________________________________________________ is free of substances that are hazardous to health No special safety measures are required for further handling The device was fully drained and thoroughly cleaned inside and outside before dispatch Company institute _____________________________...

Страница 72: ..._____________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ __________________________________________...

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