Flowserve LNGT User Manual

Pump Division

Type: LNGT

CENTRIFUGAL PUMP

USER INSTRUCTIONS: INSTALLATION, OPERATION, MAINTENANCE

PCN=00083107 02-08 [E]

These instructions must be read prior to installing,

operating, using and maintaining this equipment.

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

CONTENTS

Page

1 INTRODUCTION AND SAFETY ...........................4

1.1 General ........................................................... 4

1.2 CE marking and approvals..............................4

1.3 Disclaimer ....................................................... 4

1.4 Copyright......................................................... 4

1.5 Duty conditions ...............................................4

1.6 Safety..............................................................5

1.7 Nameplate and warning labels........................8

1.8 Specific machine performance........................9

1.9 Noise level.......................................................9

2. TRANSPORT AND STORAGE...........................11

2.1 Consignment receipt and unpacking ............11

2.2 Handling........................................................11

2.3 Lifting.............................................................11

2.4 Storage..........................................................12

2.5 Recycling and scrapping at the end of product

life..................................................................

3 PUMP DESCRIPTION.........................................12

3.1 Configurations and Specific feature..............12

3.2 Name nomenclature......................................13

3.3 Design of major parts....................................14

3.4 Performance and operating limits................. 14

6.9 Assembly.......................................................33

7 FAULTS; CAUSES AND REMEDIES...................37

8 PARTS LISTS AND DRAWINGS.........................40

8.1 LNGT – grease lubricated, packed gland

[single or double volute].................................

8.2 LNGT – oil lubricated, packed gland [single or

double volute].................................................

8.3 LNGT – Stuffing box.......................................44

8.4 General Arrangement Drawing......................45

9 CERTIFICATION..................................................45

10 OTHER RELEVANT DOCUMENTATION AND

MANUALS ........................................................

10.1 Supplementary User Instructions ................45

10.2 Change notes..............................................45

10.3 Additional sources of information ................45

4 INSTALLATION....................................................16

4.1 Location.........................................................16

4.2 Foundation.................................................... 16

4.3 Initial alignment............................................. 17

4.4 Piping............................................................18

4.5 Final shaft alignment check .......................... 23

4.6 Electrical connections...................................23

4.7 Protection systems........................................ 24

5 COMMISSIONING, START-UP, OPERATION AND

SHUTDOWN....................................................

5.1 Pre-commissioning procedure......................24

5.2 Pump lubricants............................................25

5.3 Direction of rotation.......................................25

5.4 Guarding ....................................................... 25

5.5 Priming and auxiliary supplies ...................... 25

5.6 Starting the pump..........................................26

5.7 Running the pump.........................................26

5.8 Stopping and shutdown.................................28

5.9 Hydraulic, mechanical and electrical duty.....28

6 MAINTENANCE...................................................28

6.1 General ......................................................... 28

6.2 Maintenance schedule..................................29

6.3 Spare p art s....................................................30

6.4 Recommended spares and consumable items

.......................................................................

6.5 Tools required................................................31

6.6 Fastener torques...........................................31

6.7 Renewal clearances......................................31

6.8 Disassembly.................................................. 31

Page 2 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

INDEX

Page

Additional sources [10.3].........................................45

Alignment of shafting [see 4.3, 4.5 and 4.7]..17,23,24

Assembly [6.9].........................................................33

ATEX marking [1.6.4.2] .............................................7

CE marking and approvals [1.2]................................4

Certification [9]......................................................... 45

Change notes [10.2]................................................45

Clearances [see 6.7, Renewal clearances]............. 31

Commissioning and operation [5]............................24

Compliance, ATEX [1.6.4.1]......................................6

Configurations [3.1]..................................................12

Design of major parts [3.3] ......................................14

Direction of rotation [5.3] .........................................25

Disassembly [6.8] .................................................... 31

Disclaimer [1.3]..........................................................4

Dismantling [see 6.8, Disassembly].........................31

Drawings [8].............................................................40

Duty conditions [1.5]..................................................4

Electrical connections [4.6]......................................24

End of product life [2.5]............................................ 12

Fastener torques [6.6] .............................................31

Faults; causes and remedies [7]..............................37

Foundation [4.2]....................................................... 16

Forces and moments [4.4.3.1 and 4.4.3.2]..............20

General arrangement drawing [8.4]......................... 45

Grouting [4.2.1]........................................................16

Guarding [5.4]..........................................................26

Handling [2.2]...........................................................11

Hydraulic, mechanical and electrical duty [5.9].......28

Impeller clearance [6.7] ...........................................26

Inspection [6.2.1 and 6.2.2].....................................29

Installation [4]...........................................................16

Lifting [2.3]...............................................................11

Location [4.1]...........................................................16

Lubrication [see 5.1.1, 5.2 and 6.2.3].................25,30

Maintenance [6].......................................................28

Maintenance schedule [6.2].....................................29

Name nomenclature [3.2] ........................................ 13

Nameplate [1.7.1] ...................................................... 8

Operating limits [3.4.1]............................................. 14

Ordering spare parts [6.3.1].....................................30

Parts lists [8]............................................................40

Performance [3.4]....................................................14

Piping [4.4]...............................................................18

Pre-commissioning [5.1].......................................... 25

Protection systems [4.7] ..........................................24

Pump and impeller data [3.4.2]................................15

Page

Reassembly [see 6.9 Assembly]..............................33

Receipt and unpacking [2.1].....................................11

Recommended fill quantities [see 5.2.1]..................25

Recommended grease lubricants [5.2.2.2] ..............25

Recommended spares [6.4].....................................30

Recycling [2.5]..........................................................12

Replacement parts [see 6.3 and 6.4].......................30

Running the pump [5.7]............................................26

Safety action [1.6.3]....................................................5

Safety markings [1.6.1] ..............................................5

Safety, protection system [see 1.6 and 4.7]......... 5,24

Sectional drawings [8]..............................................40

Sound level [see 1.9, Noise level]..............................9

Sources, additional information [10.3]......................45

Spare parts [6.3].......................................................30

Specific machine performance [1.8]...........................9

Starting the pump [5.6].............................................26

Stop/start frequency [5.7.6]......................................27

Stopping and shutdown [5.8]....................................28

Storage, pump [2.4]..................................................12

Storage, spare parts [6.3.2]......................................30

Supplementary manuals or information sources [10]

..................................................................................45

Tools required [6.5] ..................................................31

Torques for fasteners [6.6].......................................31

Trouble-shooting [see 7] ..........................................37

Vibration [5.7.5]........................................................27

Warning labels [1.7.2] ................................................8

Page 3 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

1 INTRODUCTION AND SAFETY

1.1 General

These instructions must always be kept

close to the product's operating location or directly with the product.

Flowserve products are designed, developed and manufactured with state-of-the-art technologies in modern facilities. The unit is produced with great care and commitment to continuous quality control, utilizing sophisticated quality techniques, and safety requirements.

Flowserve is committed to continuous quality improvement and being at service for any further information about the product in its installation and operation or about its support products, repair and diagnostic services.

These instructions are intended to facilitate familiarization with the product and its permitted use. Operating the product in compliance with these instructions is important to help ensure reliability in service and avoid risks. The instructions may not take into account local regulations; ensure such regulations are observed by all, including those installing the product. Always coordinate repair activity with operations personnel, and follow all plant safety requirements and applicable safety and health laws and regulations.

These instructions should be read prior to

installing, operating, using and maintaining the equipment in any region worldwide. The equipment must not be put into service until all the conditions relating to safety noted in the instructions, have been met.

1.2 CE marking and approvals

It is a legal requirement that machinery and equipment put into service within certain regions of the world shall conform with the applicable CE Marking Directives covering Machinery and, where applicable, Low Voltage Equipment, Electromagnetic Compatibility [EMC], Pressure Equipment Directive [PED] and Equipment for Potentially Explosive Atmospheres [ATEX].

Where applicable the Directives and any additional Approvals cover important safety aspects relating to machinery and equipment and the satisfactory provision of technical documents and safety instructions. Where applicable this document incorporates information relevant to these Directives and App rovals.

To confirm the Approvals applying and if the product is CE marked, check the serial number plate markings and the Certification. [See secti on 9, Certif ication.]

1.3 Disclaimer

Information in these User Instructions is believed to be reliable. In spite of all the efforts of Flowserve Pump Division to provide sound a nd all ne cessar y information the content of this manual may appear insufficient and is not guaranteed by Flowserve as to its completeness or accuracy.

Flowserve manufactures products to exacting International Quality Management System Standards as certified and audited by external Quality Assurance organizations. Genuine parts and accessories have been designed, tested and incorporated into the products to help ensure their continued product quality and performance in use. As Flowserve cannot test parts and accessories sourced fr om other vendo rs the incorrect incorporation of such parts and accessories may adversely affect the performance and safety features of the products. The failure to properly select, install or use authorized Flow serve parts an d accessories is considered to be misuse. Damage or failure caused by misuse is not cov ered by the Flowserve warranty. In addition, any modification of Flowserve products or removal of original components may impair the safety of these products in their use.

1.4 Copyright

1.5 Duty conditions

This product has been selected to meet the specifications of your purchaser order. The acknowledgement of these conditions has been sent separately to the Purchaser. A copy should be kept with these instructions.

The product must not be operated beyond

the parameters specified for the application. If there is any doubt as to the suitability of the product for the application intended, contact Flowserve for advice, quoting the serial number.

If the conditions of service on your purchase order are going to be changed [for example liquid pumped, temperature or duty] it is requested that the user seeks the written agreement of Flowserve before start up.

Page 4 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

1.6 Safety

1.6.1 Summary of safety markings

These User Instructions contain specific safety markings where non-observance of an instruction would cause hazards. The specific safety markings are:

This symbol indicates electrical safety instructions where non-compliance will involve a high risk to personal safety or the loss of life.

This symbol indicates safety instruct ions where non-compliance would affect personal safety and could result in loss of life.

This symbol indicates “hazardous and toxic fluid” safety instructions where non-compliance would affect personal safety and could result in loss of life.

This symbol indicates safety instructions where non-compliance will involve some risk to safe operation and personal safety and would damage the equipment or property.

This symbol indicates explosive atmosphere zone marking according to ATEX. It is used in safety instructions where non-compliance in the hazardous area would cause the risk of an explosion.

1.6.3 Safety action

This is a summary of conditions and actions to prevent injury to personnel and damage to the environment and to equipment. For products used in potentially explosive atmospheres section 1.6.4 also applies.

NEVER DO MAINTENANCE WORK

WHEN THE UNIT IS CONNECTED TO POWER

GUARDS MUST NOT BE REMOVED WHILE

THE PUMP IS OPERATIONAL

DRAIN THE PUMP AND ISOLATE PIPEWORK BEFORE DISMANTLING THE PUMP The appropriate safety precautions should be taken where the pumped liquids are hazardous.

HANDLING COMPONENTS Many precision parts have sharp corners and the wearing of appropriate safety gloves and equipment is required when handling these components. To lift heavy pieces above 25 kg [55 lb] use a crane appropriate for the mass and in accordance with current local regulations.

This symbol is used in safety instructions to remind not to rub non-metallic surfaces with a dry cloth; ensure the cloth is damp. It is used in safety instructions where non-compliance in the hazardous area would cause the risk of an explosion.

This sign is not a safety symbol but indicates

an important instructio n in the assembly pro cess.

 Denotes the focussing of attention on the

importance of reading the instructions for use.

1.6.2 Personnel qualification and training

All personnel involved in the operation, installation, inspection and maintenance of the unit must be qualified to carry out the work involved. If the personnel in question do not already possess the necessary knowledge and skill, appropriate training and instruction must be provided. If required the operator may commission the manufacturer/supplier to provide applicable training.

Always coordinate repair activity with operations and health and safety personnel, and follow all plant safety requirements and applicable safety and health laws and regulations.

THERMAL SHOCK Rapid changes in the temperature of the liquid within the pump can cause thermal shock, which can result in damage or breakage of components and should be avoided.

NEVER APPLY HEAT TO REMOVE IMPELLER Trapped lubricant or vapor could cause an explosion.

HOT [and cold] PARTS If hot or freezing components or auxiliary heating supplies can present a danger to operators and persons entering the immediate area action must be taken to avoid accidental contact. If complete protection is not possible, the machine access must be limited to maintenance staff only, with clear visual warnings and indicators to those entering the immediate area. Note: bearing housings must not be insulated and drive motors and bearings may be hot.

If the temperature is greater than 68 °C [175 °F] or below 5 °C [20 °F] in a restricted zone, or exceeds local regulations, action as above shall be taken.

Page 5 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

1.6.4 Products used in potentially explosive

PREVENT EXCESSIVE EXTERNAL

atmospheres

PIPE LOAD Do not use pump as a support for piping. Do not mount expansion joints, unless allowed by Flowserve in writing, so that their force, due to internal pressure, acts on the pump flange.

ENSURE CORRECT LUBRICATION [See section 5, Commissioning, start up, operation and shutdown.]

START THE PUMP PREFERABLY WITH OUTLET VALVE PARTLY OPENED [Unless otherwise instructed at a specific point in the Supplementary User Instructions.] This is recommended to minimize the risk of overloading and damaging the pump motor at full or zero flow. Pumps may be started with the valve further open only on installations where this situation cannot occur. The pump outlet control valve may need to be adjusted to comply with the duty following the run-up process. [See section 5.6, Commissioning start-up, operation and shutdown.]

NEVER RUN THE PUMP DRY

INLET VALVES TO BE FULLY OPEN WHEN PUMP IS RUNNING Running the pump at zero flow or below the recommended minimum flow continuously will cause damage to the seal.

DO NOT RUN THE PUMP AT ABNORMALLY HIGH OR LOW FLOW RATES Operating at a flow rate higher than norma l or at a flo w rate with no back pressure on the pump may overload the motor and cause cavitation. Low flow rates may cause a reduction in pump/beari ng life, ov erheatin g of the pump, instability and cavitation/vibrat ion.

Measures are required to:

• Avoid excess temperature

• Prevent build up of explosive mixtures

• Prevent the generation of sparks

• Prevent leakages

• Maintain the pump to avoid hazard

The following instru ctions fo r pumps a nd pum p units when installed in potentially explosive atmospheres must be followed to help ensure explosion protecti on. Both electrical and non-electri cal equi pment mu st meet the requirements of European Directive 94/9/EC.

1.6.4.1 Scope of compliance

Use equipment only in the zone for whic h it is appropriate. Always check that the driver, drive coupling assembly, seal and pump equipment are suitably rated and/or certifie d for the classi fication of the specific atmosphere in which they are to be inst alled.

Where Flowserve has supplied only the bare shaft pump, the Ex rating applies only to the pump. The party responsible for assembling the pump set shall select the coupling, driver and any additional equipment, with the necessary CE Certificate/ Declaration of Conformity establishing it is suitable for the area in which it is to be installed.

The output from a variable frequency drive [VFD] can cause additional heating aff ects i n the moto r and so, fo r pumps sets with a VFD, the ATEX Certification for the motor must state that it is covers th e situa tion where electrical supply is from the VFD. This particular requirement still applies even if the VFD is in a safe area.

Page 6 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

1.6.4.2 Marking

An example of ATEX equipment marking is shown below. The actual classification of the pump will be engraved on the nameplate.

II 2 GD c IIC 135 ºC [T4]

Equipment Group I = Mining II = Non-mining

Category 2 or M2 = high level protection 3 = normal level of protection

Gas and/or dust G = Gas D = Dust

c = Constructional safety

[in accordance with EN13463-5]

Gas Group [Equipment Category 2 only] IIA – Prop ane [typical] IIB – Ethylene [typical] IIC – Hydrogen [typical]

Maximum surface temperature [Temperature Class] [See section 1.6.4.3.]

1.6.4.3 Avoiding excessive surface temperatures

ENSURE THE EQUIPMENT TEMPERATURE

CLASS IS SUITABLE FOR THE HAZARD ZONE Pumps have a temperature class as stated in the

ATEX Ex rating on the nameplate. These are based on a maximum ambient of 40 °C [104 °F]; refer to Flowserve for higher ambient temperatures.

The surface temperature on the pump is influenced by the temperature of the liquid handled. The maximum permissible liquid temperature depends on the temperature class and must not exceed the values in the table that follows.

The temperature rise at the seals and bearings and due to the minimum permitted flow rate is taken into account in the temperatures stated.

Temperature

class to

EN13463-1

T6 T5 T4 T3

Maximum

surface

temperature

permitted

85 °C [185 °F] 100 °C [212 °F] 135 °C [275 °F] 200 °C [392 °F]

Temperature limit of liquid

handled [* depending on

material and construction

variant - check which is lower]

Consult Flowserve Consult Flowserve

115 °C [239 °F] * 180 °C [356 °F] *

The responsibility for compliance with the specified maximum liquid temperature is with the plant operator.

Temperature classification “Tx” is used when the liquid temperature varies and the pump could be installed in different hazardous atmospheres. In this case the user is responsible for ensuring that the pump surface temperature does not exceed that permitted in the particular hazardous atmosphere.

If an explosive atmosphere exists during the installation, do not attempt to check the direction of rotation by starting the pump unfilled. Even a short run time may give a high temperature resulting from contact between rotating and stationary components.

Where there is any risk of the pump being run against a closed valve generating high liqui d and casing extern al surface temperatures it is recommended that users fit an external surface temperature protectio n device.

Avoid mechanical, hydraulic or electrical overload by using motor overload trips, temperature monitor or a power monitor and make routine vibration monitoring checks.

In dirty or dusty environments, regular checks must be made and dirt removed from areas around close clearances, bearing housings and motors.

Page 7 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

1.6.4.4 Preventing sparks

To prevent a potential hazard from mechanical

contact, the coupling guard must be non-sparking. To avoid the potential hazard from random induced

current generating a spark, the earth contact on the baseplate must be used.

Avoid electrostatic charge: do not rub nonmetallic surfaces with a dry cloth; ensure cloth is damp.

The coupling must be selected to comply with 94/9/EC and correct alignment must be maintained.

1.6.4.5 Preventing leakage

The pump must only be used to handle liquids for which it has been approved to have the correct corrosion resistance.

Avoid entrapment of liquid in the pump a nd associat ed piping due to closing of suct ion an d discharg e valves, which could cause dangerous excessiv e pressures to occur if there is heat input to the liquid. This can occur if the pump is stationary or running.

Bursting of liquid containing parts due to freezing must be avoided by draining or protecting the pump and ancillary systems.

Where there is the potential hazard of a loss of a seal barrier fluid or external flush, the fluid must be monitored.

If leakage of liquid to atmosphere can result in a hazard, the installation of a liquid detection device is recommended.

1.6.4.6 Maintenance to avoid the hazard

It is recommended that a maintenance plan and schedule is adopted. [See section 6, Maintenance.]

1.7 Nameplate and warning labels

1.7.1 Nameplate

Every pump has a name plate made in stainless steel with information regarding operating condition as capacity, total dynamic head, rotational speed, specific gravity and serial number. For details of nameplate, see the Declaration of Conformity.

1.7.2 Warning labels

The pump has been shipped with 1 or more warning labels. Follow the instructions on these labels carefully.

CORRECT MAINTENANCE IS REQUIRED TO AVOID POTENTIAL HAZARDS WHICH GIVE A RISK OF EXPLOSION

The responsibility for compliance with maintenance instructions is with the plant operator.

To avoid potential explosion hazards during maintenance, the tools, cleaning and painting materials used must not give rise to sparking or adversely affect the ambient conditions. Where there is a risk from such tools or materials, maintenance must be conducted in a safe area.

Page 8 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

1.8 Specific machine performance

For performance parameters see section 1.5, Duty conditions. When the contract requirement specifies

these to be incorporated into User Instructions these are included in the Supplementary User Instructions. Where performance data has been supplied separately to the purchaser these should be obtained and retained with these User Instructions if required.

1.9 Noise level

When pump noise level exceeds 85 dBA attention must be given to prevailing Health and Safety Legislation, to limit the exposure of plant operating personnel to the noise. The usual approach is to control exposure time to the noise or to enclose the machine to reduce emitted sound. You may have already specified a limiting noise level when the equipment was ordered, however if no noise requirements were defined then machines above a certain power level will exceed 85 dBA. In such situations consideration must be given to the fitting of an acoustic enclosure to meet local regulations. Pump noise level is dependent on a number of factors - the type of motor fitted, the operating capacity, pipe work design and acoustic characteristics of the building.

Typical sound pressure levels measured in dB and A-weighted are shown in the table below the figures are indicative only, they are subject to a +3 dB tolerance, and cannot be guaranteed.

The values are based on the noisiest ungeared electric motors that are likely to be encountered. They represent sound pressure levels at 1 m [3.3 ft] from the directly driven pump, for "free field over a reflecting plane".

If a pump unit only has been purchased, for fitting with your own driver, then the "pump only" noise levels from the table should be combined with the level for the driver obtained from the supplier. If the motor is driven by an inverter, it may show an increase in noise level at some speeds. Consult a Noise Specialist for the combined calculation.

 For units driven by equipment other than electric

motors or units contained within enclosures, see the accompanying information sheets and manuals.

Page 9 of 48

Typical sound pressure level, dBA, L

and speed

kW [hp]

<0.55 [<0.75] 71 [88] 66 [83] 64 [81] 62 [79] 64 [81] 62 [79] 63 [80] 62 [79]

0.75 [1] 74 [91] 66 [83] 67 [84] 62 [79] 67 [84] 62 [79] 63 [80] 62 [79]

1.1 [1.5] 74 [91] 68 [85] 67 [84] 64 [81] 67 [84] 64 [81] 65 [82] 64 [81]

1.5 [2] 77 [94] 70 [87] 70 [87] 66 [83] 70 [87] 66 [83] 66 [83] 66 [83]

2.2 [3] 78 [95] 72 [89] 71 [88] 68 [85] 71 [88] 68 [85] 68 [85] 68 [85] 3 [4] 81 [98] 74 [91] 74 [91] 70 [87] 74 [91] 70 [87] 70 [87] 70 [87] 4 [5] 82 [99] 75 [92] 75 [92] 71 [88] 75 [92] 71 [88] 71 [88] 71 [88]

5.5 [7.5] 90 [107] 77 [94] 83 [100] 73 [90] 76 [93] 73 [90] 72 [89] 71 [88]

7.5 [10] 90 [107] 78 [95] 83 [100] 74 [91] 77 [94] 74 [91] 73 [90] 72 [89] 11 [15] 91 [108] 80 [97] 84 [101] 76 [93] 78 [95] 76 [93] 74 [91] 73 [90] 15 [20] 92 [109] 83 [100] 85 [102] 79 [96] 80 [97] 79 [96] 76 [93] 75 [92]

18.5 [25] 92 [109] 83 [100] 85 [102] 79 [96] 80 [97] 79 [96] 76 [93] 75 [92] 22 [30] 92 [109] 83 [100] 85 [102] 79 [96] 81 [98] 79 [96] 77 [94] 75 [92] 30 [40] 100 [117] 85 [102] 93 [110] 81 [98] 84 [101] 80 [97] 80 [97] 76 [93] 37 [50] 100 [117] 86 [103] 93 [110] 82 [99] 84 [101] 80 [97] 80 [97] 76 [93] 45 [60] 100 [117] 87 [104] 93 [110] 83 [100] 84 [101] 80 [97] 80 [97] 76 [93] 55 [75] 100 [117] 88 [105] 95 [112] 84 [101] 86 [103] 81 [98] 82 [99] 77 [94]

75 [100] 100 [117] 90 [107] 95 [112] 86 [103] 88 [105] 81 [98] 83 [100] 78 [95]

90 [120] 100 [117] 90 [107] 95 [112] 86 [103] 90 [107] 81 [98] 85 [102] 78 [95] 110 [150] 100 [117] 91 [108] 95 [112] 87 [104] 91 [108] 83 [100] 86 [103] 79 [96] 150 [200] 101 [118] 92 [109] 96 [113] 88 [105] 91 [108] 83 [100] 86 [103] 79 [96] 200 [270] [1] [1] [1] [1] [1] 83 [100] [1] 80 [97] 300 [400] - - - - [1] 84 [101] [1] 81 [98] 500 [670] - - - - [1] 85 [102] [1] 83 [100]

1000 [1300] - - - - [1] 86 [103] [1] 86 [103] 1500 [2000] - - - - [1] 90 [107] [1] 88 [105]

3550 r/min 2900 r/min 1750 r/min 1450 r/min Motor size

Pump and

motor

dB[A]

at 1 m reference 20 μPa [LwA sound power 1 pW where LpA >85 dBA]

Pump

only

dB[A]

Pump and

motor

dB[A]

Pump

only

dB[A]

Pump and

motor

dB[A]

Pump

only

dB[A]

Pump and

motor

dB[A]

[1] Motors in this range are generally job specific and noise levels should be calculated based on actual

equipment installed. For 960 r/min reduce 1450 r/min values by 5 dBA

Pump

only

dB[A]

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

2. TRANSPORT AND STORAGE

2.1 Consignment receipt and unpacking

Immediately after receipt of the equipment it must be checked against the delivery and shipping documents for its completeness and that there has been no damage in transportation.

Any shortage and or damage must be reported immediately to Flowserve Pump Division and received in writing within one month of receipt of the equipment. Later claims cannot be accepted.

Check any crate, boxes and wrappings for any accessories or spare parts that may be packed separately with the equipment or attached to side walls of the box or equipment.

Each product has a unique serial number. Check that this number corresponds with that advised and always quote this number in correspondence as well as when ordering spare parts or further accessories.

2.2 Handling

Boxes, crates, pallets or cartons may be unloaded using fork-lift vehicles or slings dependent on their size and construction.

2.3 Lifting

Fully trained personnel must carry out lifting, in accordance with local regulations. The driver and pump weights are recorded on their respective General Arrangement Drawing.

should be lifted as shown. Unless otherwise specified in the supplementary instructions.

Lift the centrifugal pump by attaching the lifting cables around that part of the pump casing to which the bearing pedestals are attached. To prevent the pump unit from being damaged, use a spreader.

2.3.1 Lifting the upper half of the pump

Lift the upper half of the pump casing using the lifting lugs [or holes] attached to this half.

To avoid distortion, the pump unit

casing

A crane must be used for all pump sets, components and accessories in excess of 25 kg [55 lb]. Fully trained personnel must carry out lifting, in accordance with local regulations. The driver and pump weights are recorded on their respective nameplates.

The pump is fitted with auxiliary piping. Remove this piping before the pump is lifted to avoid damage to these pipes and even the pump. After erection of the pumps this piping can be re-assembled easily. With every lifting operation this procedure has to be repeated.

Unsafe lifting is never allowed!

Page 11 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

2.3.2 Lifting with foundation frame

[If applicable] Lifting lugs have been welded to the

foundation frame for lifting purposes. The unit should be hoisted using these lifting lugs.To

prevent the electric motor and/or pipe lines from being damaged, use a spreader.

The pump should not be lifted as shown:

Bare shaft pump:

Complete pump unit:

The driver and pump weight is recorded on their respective nameplates. The total weight is mentioned on the General Arrangement Drawing.

2.4 Storage

Store the pump in a clean , dry location away from vibration. Leave piping connection covers in place to keep dirt and other foreign material out of pump casing. Turn pump at intervals to prevent brinelling of the bearings and the seal faces, if fitted, from sticking.

The pump may be stored as above for up to 6 months. Consult Flowserve for preservative actions when a longer storage period is needed.

2.5 Recycling and scrapping at the end of product life

At the end of the service life of the product or its parts, the relevant materials and parts should be recycled or disposed of using an environmentally acceptable method and local regulations. If the product contains substances that are harmful to the environment, these should be removed and disposed of in accordance with current regulations. This also includes the liquids and or gases that may be used in the "seal system" or other utilities.

Make sure that hazardous substances are disposed of safely and that the correct personal protective equipment is used. The safety specifications must be in accordance with the current regulations at all times.

3 PUMP DESCRIPTION

3.1 Configurations and Specific feature

3.1.1 Configurations

The LNGT type pump is a single stage, double suction, horizontal split volute type centrifugal pump designed for water transport and cooling duties in industrial and potable water systems, power stations, irrigation and drainage pumping stations, fire fighting and marine systems, in refineries and in petro-chemical and chemical plants. It can be used with motor, steam turbine and gasoline or diesel engine drives.

LNGT pumps are used for the following reasons:

- High efficiency

- Low NPSH requirements

- Pump shaft carried in two bearings one on either side.

- Quick and easy inspection of internals.

Page 12 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

The pumps feature a double volute, but some small sizes have a single volute. The LNGT has the following configuration:

LNGT horizontal suction and discharge nozzles [inline]

3.1.2 Specific features

The pump casing is axially split. The suction and delivery nozzles are integral with the pump casing bottom half and they are in line regarding the horizontal centerline.

The two pump casing halves are assembled by means of studs and nuts. Dismantling the pump casing upper half allows quick inspection of the pump internals, without it being necessary to disturb the suction and delivery piping.

The rotor assembly can be easily removed. Removal of pump casing and bearing housing upper halves. If necessary use the jack screws. Removal rotor assembly is now possible. Reassembling of upper halves by means of dowel pins. No realignment is needed.

The stuffing box chambers are part of the pump casing. In standard configuration, the pump has gland packing rings with a lantern ring. Local to the lantern rings, the stuffing box chambers have a connection for flushing, in case needed. Single mechanical seals are also available.

The space between pump casing and bearing housing is designed in such a way, that the packing rings can be replaced without it being necessary to dismantle the pump. With various pump sizes, the casing is of the double-volute type in order to reduce radial force on the impeller and consequently the shaft deflection.

The pump shaft is supported on either side of the impeller by roller bearings or journal bearings situated outside the pump casing. The bearings are grease lubricated. Re-lubrication is possible through the grease nipple in the bearing cover. All pump sizes can also be provided with oil-bath lubricated bearings. The bearing housings are standard sealed with a V-ring (Labyrinth ring) together with a retaining and/or thrower. Bearing isolators are optional.

Sleeves local to the stuffing boxes protect the pump shaft from effects of the pumped medium and from wear local to the packing rings. On either side of the impeller, replaceable case wear rings are fitted to protect the pump casing. It is also possible to provide the impeller with impeller wear rings. The impeller wear rings are locked with set screws to prevent co-rotation. The casing wear rings are locked with dowel pin in the lower half casing to prevent co-rotation.

Efficiency

The impeller and pump casings were designed, using advanced techniques and extensive model testing, which ensures optimum efficiency, thus reducing the energy consumption.

Inlet conditions

Optimum design of the double-suction impeller and optimum, elaborate test base, shaping of the suction boxes provide the possibility of working at low NPSH values.

Vibration/noise

The impeller is dynamically balanced, so the pump amply satisfies maximum vibration levels e.g. as demanded in standard VDI 2056. The generously sized suction boxes also add to a low noise level.

Interchange ability

The well-thought-out design ensures optimum interchange ability of parts with those of other sizes in the LNGT range.

Direction of rotation

The pumps are suited for both clockwise and counter-clockwise rotation.

3.2 Name nomenclature

The pump size will be engraved on the nameplate typically as below:

500-LNGT-800 Y1

Nominal discharge branch size.

Configuration – see 3.1 above. Nominal maximum

impeller diameter. Hydraulic indentification for

impeller design

The typical nomenclature above is the general guide to the LNGT configuration description.

Page 13 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

Identify the actual pump size and serial number from the pump nameplate. Check that this agrees with the applicable certification provided.

3.3 Design of major parts

Pump casing [1213 + 1214]

The pump has its main casing gasket axial to the shaft allowing maintenance to the rotating element by removing the upper half casing [1213]. Suction and discharge branches are in the bottom half [1214] and therefore remain undisturbed.

Impeller [2200]

The double suction impeller is fully shrouded and may be fitted with optional hub rings. The impeller can be executed with staggered vanes to minimize vibration.

Shaft [2100]

The large diameter stiff shaft, mounted on bearings, has a keyed drive end.

Pump bearings and lubrication

Ball bearings (journal and thrust) are fitted as standard and may be either oil or grease lubricated, protected by V-ring (Labyrinth ring) seals.

Bearing isolators or stationary labyrinths may be fitted as an option in the bearing covers to protect the bearings.

Bearing housing [3200]

Two grease n i pples enable grease lubricated bearings to be replenished between major service intervals. For oil lubricated bearings, a constant level oiler is fitted.

Stuffing box [4110]

The stuffing box housing is designed for gland packing rings. Mechanical seal is an option

Shaft seal [4010]

The mechanical seal[s] attached to the pump shaft seals the pumped liquid from the environment. Gland packing may be fitted as an option.

Driver

The driver is normally an electric motor. Different drive configurations may be fitted such as internal combustion engines, turbines, hydraulic motors etc driving via couplings, belts, gearboxes, drive shafts etc.

Accessories

Accessories may be fitted when specified by the customer.

3.4 Performance and operating limits

This product has been selected t o meet t he specifications of your purchase order. See section

1.5. The following data is included as additional

information to help with your installation. It is typical, and factors such as temperature, materials, and seal type may influence this data. If required, a definitive statement for your particular application can be obtained from Flowserve.

3.4.1 Operating limits

Pumped liquid temperature limits*

Maximum ambient temperature*

Maximum soft solids in suspension*

Maximum pump speed

* Subject to written agreement from Flowserve.

- 20 to + 145 ºC* [- 4 to + 176 ºF]

- 20 to + 40 ºC [- 4 to +104 ºF]

up to 3 % by volume [refer for size limits]

refer to the nameplate

Page 14 of 48

LNGT USER INSTRUCTIONS ENGLISH 00083107 02-08

3.4.2 Pump and impeller data

Pump size

Impeller minimum

passage

size

mm [in.]

outlet width

150LNGT375F 17 [0.67]

150LNGT375G 24 [0.94] 150LNGT375H 26.4 [1.04] 150LNGT400F 22 [0.87] 150LNGT400G 19 [0.75] 150LNGT475F 18 [0.71] 200LNGT300F 27.5 [1.08] 200LNGT350F 18.3 [0.72] 200LNGT400F 19 [0.75] 200LNGT425F 23.4 [0.92] 200LNGT475F 26.6 [1.05] 200LNGT500F 18 [0.71] 200LNGT550F 20 [0.79] 200LNGT600F 20.6 [0.81] 250LNGT325F 30.6 [1.2] 250LNGT425F 23 [0.91] 250LNGT500F 35 [1.38] 250LNGT575F 30 [1.18] 250LNGT575G 32 [1.26] 250LNGT625F 34.8 [1.37] 300LNGT275F 41.3 [1.63] 300LNGT300F 62 [2.44] 300LNGT300G 49 [1.93] 300LNGT400F 33 [1.3] 300LNGT400G 37 [1.46] 300LNGT425F 34.8 [1.37] 300LNGT500F 26 [1.02] 300LNGT725F 26 [1.02] 350LNGT325F 74 [2.91] 350LNGT400F 58 [2.28] 350LNGT400G 61 [2.4] 350LNGT450F 39 [1.54] 350LNGT525F 33 [1.3] 350LNGT600F 28 [1.1] 350LNGT600G 40 [1.57] 350LNGT600H 34 [1.34] 350LNGT675F 44.5 [1.75] 400LNGT350F 90 [3.54] 400LNGT550F 43.5 [1.71] 500LNGT375F 85 [3.35] 500LNGT450F 78.3 [3.08] 500LNGT650F 35 [1.38]

800LNGT1250Y1 125 [4.92]

• note: 779/780 = DE / NDE

Nominal wear

ring diameter

Case wear ring

only

210.4 230.4 0.2

190.35 210.35 0.175

210.4 230.4 0.2

190.35 210.35 0.175

210.4 230.4 0.2

230.45 250.45 0.225

210.4 230.4 0.2

230.45 250.45 0.225

210.4 230.4 0.2

230.45 250.45 0.225

240.45 260.45 0.225

230.45 250.45 0.225

255.45 275.45 0.225

270.45 290.45 0.225

285.45 305.45 0.225

255.45 275.45 0.225

240.45 260.45 0.225

210.4 240.45 0.2 / 0.225

270.45 290.45 0.225

250.45 270.45 0.225

300.5 320.5 0.25

285.45 305.45 0.225

295.45 315.45 0.225

300.5 320.5 0.25

340.5 360.5 0.25

290.45 335.45 0.225

375.5 395.5 0.25

300.5 320.5 0.25

375.5 395.5 0.25

340.5 360.5 0.25

375.5 395.5 0.25

- 779 / 780 0.6 / 0.6

Nominal wear

ring diameter

Case- and

impeller wear

ring

Mean radial

wear ring clearance

Approx. oil capacity,

both bearings

liter

Page 15 of 48

+ 33 hidden pages