Flowserve DMX User Manual

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DMX/DMXD/DMXH/DMXDH centrifugal pumps

USER INSTRUCTIONS

Installation

Operation

Multistage, single/double suction, horizontally split volute type centrifugal pumps

PCN = 85392728 – 10/09 (E)

riginal instructions

Maintenance

SLEEVE/KTB CONFIGURATION

These instructions must be read prior to installing,

operating, using and maintaining the equipment.

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

CONTENTS

1 INTRODUCTION AND SAFETY ...................... 3

1.1 General ....................................................... 3

1.2 CE marking and approvals ......................... 3

1.3 Disclaimer ................................................... 3

1.4 Copyright .................................................... 3

1.5 Duty conditions ........................................... 3

1.6 Safety.......................................................... 4

1.7 Warning labels ............................................ 7

1.8 Specific machine performance ................... 8

1.9 Noise level .................................................. 8

2 TRANSPORT AND STORAGE ...................... 10

2.1 Consignment receipt and unpacking ........ 10

2.2 Handling ................................................... 10

2.3 Lifting ........................................................ 10

2.4 Extended storage ..................................... 11

2.5 Recycling and end of product life ............. 14

3 PUMP DESCRIPTION .................................... 15

3.1 Configurations .......................................... 15

3.2 Name nomenclature ................................. 15

3.3 Design of major parts ............................... 15

3.4 Performance and operating limits ............. 16

4 INSTALLATION .............................................. 17

4.1 Location .................................................... 17

4.2 Foundation ................................................ 17

4.3 Grouting .................................................... 18

PAGE PAGE

5.5 Guarding................................................... 31

5.6 Priming and auxiliary supplies.................. 31

5.7 Starting the pump ..................................... 31

5.8 Running or operation ................................ 31

5.9 Stopping and shutdown ............................ 32

5.10 Hydraulic, mechanical and electrical duty 32

6 MAINTENANCE ............................................. 34

6.1 Maintenance schedule ............................. 34

6.2 Spare parts ............................................... 35

6.3 Recommended spares and consumable

items ......................................................... 35

6.4 Tools required ........................................... 35

6.5 Fastener torques ...................................... 35

6.6 Disassembly ............................................. 36

6.7 Examination of parts................................. 39

6.8 Assembly of pump and seal ..................... 40

7 FAULTS; CAUSES AND REMEDIES ........... 47

8 PARTS LIST AND DRAWINGS ..................... 49

9 CERTIFICATION ............................................ 55

10 OTHER RELEVANT DOCUMENTATION AND

MANUALS ...................................................... 55

10.1 Supplementary user instruction manuals . 55

10.2 Change notes ........................................... 55

10.3 Additional sources of information ............. 55

10.4 Customer Data Sheet ............................... 56

4.4 Initial alignment ......................................... 20

4.5 Piping ........................................................ 24

4.6 Electrical connections ............................... 26

4.7 Final shaft alignment check ...................... 27

4.8 Protection systems ................................... 27

5 COMMISSIONING, START-UP, OPERATION

AND SHUTDOWN .......................................... 28

5.1 Precommissioning procedure ................... 28

5.2 Pump lubricants ........................................ 29

5.3 Impeller wearring clearance ..................... 31

5.4 Direction of rotation .................................. 31

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

1 INTRODUCTION AND SAFETY

1.1 General

These Instructions must always be kept

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

Flowserve's 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, utilising 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/regulations.

These instructions must 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. Failure to follow and apply the present user instructions is considered to be misuse. Personal injury, product damage, delay or failure caused by misuse are not covered by the Flowserve warranty.

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 Approvals. To confirm the Approvals applying and if the product is CE marked, check the serial number plate markings and the Certification, see section 9, Certification.

1.3 Disclaimer

Information in these User Instructions is believed to be reliable. In spite of all the efforts of Flowserve to provide sound and all necessary 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 organisations. Genuine parts and accessories have been designed, tested and incorporated into the products to help ensure continued product quality and performance in use. As Flowserve cannot test parts and accessories sourced from other vendors 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 authorised Flowserve parts and accessories is considered to be misuse. Damage or failure caused by misuse is not covered by Flowserve's 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

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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 Flowserve’s written agreement before start up.

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 instructions where non-compliance would affect personal safety and could result in loss of life.

This symbol indicates “hazardous substances and toxic fluid” safety instructions where noncompliance 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 marking according to ATEX. It is used in safety instructions where non-compliance in the hazardous area would cause the risk of an explosion.

This symbol indicates is used in safety instructions to remind not to rub non-metallic surfaces with a dry cloth; ensure cloth is damp. It is used 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 instruction in the assembly process.

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 co-ordinate repair activity with operations and health and safety personnel, and follow all plant safety requirements and applicable safety and health laws and regulations.

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.)

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

(See section 5, Commissioning, startup, operation and shutdown.)

opened (Unless otherwise instructed at a specific point in the user instructions). This is recommended to minimize the risk of overloading at full flow and damaging the pump at 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, Commissioning start-up, operation and shutdown.)

pump is running. Running the pump at zero flow or below the recommended minimum flow continuously will cause damage to the pump and seals. Low flow rates may cause a reduction in pump/bearing life,

Prevent excessive external pipe load

Ensure correct lubrication

Start the pump with outlet valve partly

Never run the pump dry.

Inlet valves to be fully open when

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overheating of the pump, instability and cavitation/ vibration.

Do not run the pump at abnormally high or low flow rates. Operating at a flow rate higher than normal or at a flow rate with no backpressure on the pump may overload the motor and cause pump cavitation.

Never do maintenance work when

the unit is connected to power.

When the pump is handling hazardous

liquids care must be taken to avoid exposure to the liquid by appropriate sitting of the pump, limiting personnel access and by operator training. If the liquid is flammable and/or explosive, strict safety procedures must be applied.

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 an appropriate crane for the mass and in accordance with current local regulations.

Coupling guards must not be removed while

the pump is operational.

THERMAL SHOCK

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

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 (154°F) or below -5 °C (20 °F) in a restricted zone, or exceeds local regulations, action as above shall be taken.

1.6.4 Products used in potentially explosive atmospheres

Measures are required to:

• Avoid excessive temperature

• Prevent the build up of explosive mixtures

• Prevent the generation of sparks

• Prevent leakages

• Maintain the pump to avoid hazard

The following instructions for pumps and pump units when installed in potentially explosive atmospheres must be followed to help ensure explosion protection. Both electrical and non-electrical equipment must meet the requirements of European Directive 94/9/EC.

1.6.4.1 Scope of compliance

Use equipment only in the zone for which it is appropriate. Always check that the driver, drive coupling assembly, seal and pump equipment are suitably rated and/or certified for the classification of the specific atmosphere in which they are to be installed.

Where Flowserve has supplied only the bare shaft pump, the Ex rating applies only to the pump. The party responsible for assembling the ATEX 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 effects in the motor and so, for pumps sets with a VFD, the ATEX Certification for the motor must state that it is covers the situation where electrical supply is from the VFD. This particular requirement still applies even if the VFD is in a safe area.

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.

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II 2 GD c IIB 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 prEN13463-5)

Gas Group (Equipment Group II only) IIA - Propane (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

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

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 liquid and casing external surface temperatures, the users shall fit an external surface temperature protection 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 shall be made and dirt removed from areas around close clearances, bearing housings and motors.

1.6.4.4 Preventing the build up of explosive mixtures

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 temperature of 40 °C (104 °F); refer to Flowserve for higher ambient temperatures.

The temperature of the liquid handled influences the surface temperature on the pump. The maximum permissible liquid temperature depends on the ATEX 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

prEN 13463-1

T6 T5 T4 T3 T2

T1 *The table only takes the ATEX temperature class into consideration. Pump design or material as well as component design or material may further limit the maximum working temperature of the liquid.

Maximum surface

temperature

permitted

85 °C (185 °F) 100 °C (212 °F) 135 °C (275 °F) 200 °C (392 °F) 300 °C (572 °F) 450 °C (842 °F)

Temperature limit of

Consult Flowserve Consult Flowserve

115 °C (239 °F) * 180 °C (356 °F) * 275 °C (527 °F) * 400 °C (752 °F) *

liquid

ENSURE THE PUMP IS PROPERLY FILLED

AND VENTED AND DOES NOT RUN DRY Ensure the pump and relevant suction and discharge

pipeline system is totally filled with liquid at all times during the pump operation, so that an explosive atmosphere is prevented. In addition it is essential to make sure that seal chambers, auxiliary shaft seal systems and any heating and cooling systems are properly filled. If the operation of the system cannot avoid this condition, users shall fit an appropriate dry run protection device (e.g. liquid detection or a power monitor).

To avoid potential hazards from fugitive emissions of vapor or gas to atmosphere the surrounding area shall be well ventilated.

1.6.4.5 Preventing sparks

To prevent a potential hazard from mechanical contact, the coupling guard must be non-sparking and anti-static for Category 2.

To avoid the potential hazard from random induced current generating a spark, the baseplate shall be properly grounded.

Avoid electrostatic charge: do not rub non-metallic

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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.

1.6.4.6 Preventing leakage

The pump shall 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 and associated piping due to closing of suction and discharge valves, which could cause dangerous excessive 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 shall be monitored.

1.7 Warning labels

If leakage of liquid to atmosphere can result in a hazard, then a liquid detection device shall be installed.

1.6.4.7 Maintenance to avoid the hazard

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 owner or 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.

A maintenance plan and schedule shall be adopted. (See section 6, Maintenance).

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Oil lubricated units only:

1.8 Specific machine performance

For performance parameters see 10.4 Customer Data Sheet. When the contract requirement specifies

these to be incorporated into User Instructions these are included here. 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

Attention must be given to the exposure of personnel to the noise, and local legislation will define when guidance to personnel on noise limitation is required, and when noise exposure reduction is mandatory. This is typically 80 to 85 dBA.

The usual approach is to control the 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 attention is drawn to the following table to give an indication of equipment noise level so that you can take the appropriate action in your plant.

Pump noise level is dependent on a number of operational factors, flow rate, pipework design and acoustic characteristics of the building, and so the values given are subject to a 3 dBA tolerance and cannot be guaranteed.

1.9.1 Pump noise levels

The following tables may be used to determine the estimated sound pressure levels (SPL), expressed in dBA (dB), for DMX/DMXD/DMXH/DMXDH pumps.

The values shown have been derived from actual noise test data and are based on the following conditions:

a) Equipment is located in a free field above a

reflecting plane in which the reduction in noise level in all directions is 6 dB in each octave band for each doubling of distance.

b) Background noise is 10 dB (minimum) below all

noise levels in each octave band.

c) The values shown are at a distance of 1 m

(3.281 ft), horizontally from major pump surfaces and 1.5 m (4.78 ft) above the floor using the standard pressure reference of 20 µPa (0.00002 N/m2).

d) Overall noise level, dBA ("A" scale) is determined

at points of maximum noise level, and the values of all mid-band frequencies are basis "C" scale readings.

1.9.2 Overall noise level

Tables below show dBA levels for two stage and three or more stage pumps, based on the best efficiency point BEP at design RPM and required impeller diameter.

For specific gravities less than 1.0, use 1.0 specific gravity. For specific gravities above 1.0, use the actual specific gravity.

When the required condition flow falls outside the range of 75% to 125% of BEP, a Part Load Correction (PLC) must be added to the noise levels as follows:

Percent of BEP at required Impeller Diameter 74 to 62 % or 126 to 136 % +1 61 to 50 % or 137 to 150 % +2 49 to 38 % +3 37 to 25 % +4

PLC DB

Brake Horse Power at Best Efficiency Point.

2 Stage pump 250 to 350 87 350 to 500 88 500 to 700 89 700 to 940 90 940 to 1100 91 1100 to 1300 92 1300 to 1500 93 Above 1500, contact Flowserve 94

dBA

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Brake Horse Power at Best Efficiency Point. 3 to 14 Stages 90 to 110 79 110 to 140 80 140 to 180 81 180 to 220 82 220 to 280 83 280 to 360 84 360 to 450 85 450 to 560 86 560 to 720 87 720 to 900 88 900 to 1125 89 1125 to 1400 90 1400 to 1800 91 1800 to 2250 92 2250 to 2800 93 2800 to 3600 94 3600 to 4500 95 4500 to 5700 96 5700 to 7200 97 7200 to 9000 98 9000 to 11,000 99 11,000 to 14,000 100

dBA

1.9.3 Combined noise levels for pump and driver components

When two or more sources produce noises that are sufficiently unrelated (so that interference effects do not occur) the total combined noise level may be obtained by a simple addition of dB values according to the below table.

Difference between two levels to be Combined, dB 0 3 1 2.5 2 2 4 1.5 6 1 9 0.5 10 0

Add to higher level to obtain Combined level, dB

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

2 TRANSPORT AND STORAGE

2.1 Consignment receipt and unpacking

Immediately after receipt of the equipment it must be checked against the delivery/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 and received in writing within one month of receipt of the equipment. Later claims cannot be accepted.

Check any crates, boxes and wrappings for any accessories or spare parts which 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.

2.1.1 Receipt inspection

In general, care is to be taken when removing crating, coverings, and strapping in order not to damage any auxiliary equipment and/or the paint finish.

2.1.3 Paint/rust preventive

Internal parts of the pump and bearing housings are protected prior to shipment with a rust preventive such as Dasco guard 2408M. This can be removed with petroleum solvents.

External non-machined surfaces are painted with one of applicable Flowserve coating.

Parts ordered separately are protected with a rust preventive such as Dasco guard 2408M. This can be removed with petroleum solvents.

2.2 Handling

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

2.3 Lifting

The following information regarding receiving is only offered as a general guideline to the customer. Flowserve requires that all receiving be conducted in accordance with specifications set forth in Chapter 3, Jobsite Receiving and Protection from API Recommended Practices 686/PIP REIE 686, First Edition.

The pump and its associated equipment were carefully inspected at the factory prior to shipment to ensure quality compliance. It is suggested that the pump be inspected upon arrival and that any irregularities or damage be reported to the carrier immediately.

The condition of the skid and covering is indicative of the way the shipment was handled. Broken skids, torn coverings, bent hold-down bolts, broken straps, etc. indicate rough handling.

The protective covers on the pump nozzles should be in place and undamaged.

2.1.2 Unpacking

The pump should arrive already mounted on the baseplate and it is therefore suggested that the unpacking of the equipment should proceed per instruction as outlined in this manual.

To avoid distortion, the pump unit

should be lifted as shown.

TRAINED PERSONNEL

A crane must be used for all pump sets 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 or mass plates.

2.3.1 Lifting equipment

The following information regarding lifting is only offered as a general guideline. Flowserve requires that all lifting and rigging be performed in accordance with specifications set forth in Chapter 2, Lifting and Rigging from API Recommended Practices 686/PIP REIE 686, First Edition.

EQUIPMENT CAPACITY Make sure that any equipment used to lift the pump or any other of its components is capable of supporting the total weight encountered. Make sure that all parts are properly rigged before attempting to lift.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

2.3.2 To lift unit

The complete unit with pump, driver and auxiliary equipment all mounted on the baseplate can NOT be lifted as a unit. Driver must be removed from baseplate before lifting. To lift unit sling baseplate from all lifting eyes. Failure to do this may result in permanent deformation of baseplate. Damage to baseplate caused by mishandling or improper setting prior to grouting is not covered by Flowserve’s warranty.

2.3.3 To lift driver

Refer to driver manufacturers instructions.

2.3.4 To lift pump

Install sling from overhead hoist and under bearing housing mounting brackets (cast portion of casing where bearing housings attach).

To lift the pump bottom half casing, slings can be attached to the pump feet, casing boltholes or padded slings can be used around the outer casing.

2.3.6 To lift pump rotor

Using slings that will not damage shaft, rig around shaft close to the impellers and to overhead hoist. Carefully lift rotor from lower half casing.

Proper lifting practice for pump

2.4 Extended storage

Proper lifting practice for pump

LIFTING PRACTICE

Do not lift entire pump from cast lifting lugs on upper half casings. These lugs are for lifting upper half casing only.

2.3.5 To lift half casing

To lift upper half casing, rig to overhead hoist from cast lifting lugs provided.

Proper lifting practice for upper case

The following information regarding receiving is only offered as a general guideline. Flowserve requires that all receiving be conducted in accordance with specifications set forth in Chapter 3, Jobsite Receiving and Protection from API recommended Practices 686/PIP REIE 686, First Edition.

During extended periods of storage prior to installation and from the time of installation until commercial operation, precautions must be taken to protect the pump from deterioration. The various parts of the pump are protected prior to shipment by applying varying grades of preservative and paint. However, during shipment and handling, the preservatives are subjected to conditions that can cause their removal. Also, during extended periods of time, the preservatives may deteriorate. The following procedures should be followed to prevent deterioration of the pump during the extended storage period. These procedures may also be supplemented by the experience of the person(s) performing the tasks.

It should be noted, that unless otherwise agreed to, full responsibility and costs associated with the storage and inspection of this equipment rests with the customer.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

If pump is equipped with a mechanical seal and is stored or has not been run for 1 year or more, the mechanical seal must be removed before start-up and faces re-lapped to guard against the possibility of seal leakage. When reinstalling the seal, new “O” rings and gaskets must be used.

2.4.1 Pump inspection upon arrival

When the pump is received, it should be inspected for damage or other signs of rough handling. Any damage if found should be reported to the carrier immediately.

Inspect the preservative coating on the various parts. If necessary, renew the preservative in areas where it has rubbed off or scraped.

Inspect all painted surfaces. If necessary, touch up the areas where paint has been chipped or scraped.

Inspect all covers over pump openings and piping connections. If covers or seals for the covers are damaged or loose, they are to be removed, and a visual inspection made of the accessible interior areas for accumulation of foreign materials or water. If necessary, clean and re-coat the interior parts with preservative to restore the parts to the “as shipped” condition. Install or replace covers and fasten secure.

2.4.2 Storage area

When selecting a storage area, the following should be taken into consideration:

a) The deterioration of the equipment will be

proportionate to the class/type of storage provided.

b) The expenses involved in restoring the

equipment at time of operation will be proportionate to the class/type of storage provided.

2.4.3 Storage preferred (dry)

If at all possible, the pump and its components should be stored indoors where they will be protected from the elements. If it is not possible to store the pump and its components indoors, precautions must be taken to protect them from the elements. Regardless of whether storage is inside or outside, the storage area should be vibration-free. All boxes that are marked for inside storage must be stored indoors. Coverings of heavy gauge plastic sheets, canvas, waterproof burlap or other suitable coverings should protect the pump and its components from

dirt, dust, rain, snow or other unfavorable conditions when stored outdoors.

All equipment must be placed upon skids or blocks to prevent contact with the ground and surface contaminants. Equipment must be adequately supported to prevent distortion and bending.

2.4.3.1 Rotor storage

It is recommended that pump rotor be removed from pump and stored vertically. Rotors may also be stored horizontally in the pump. Rotors that have to be stored horizontally outside the pump must be supported close to impeller to eliminate sag that may cause rotor to take a permanent set.

2.4.3.2 Customer inspection

The stored equipment is to be placed on a periodic inspection schedule by the customer.

The responsibility for setting up an inspection and maintenance schedule rests with the customer and will be dependent upon the class/type of storage provided. It will be expected that initially inspection would occur weekly, then depending upon the inspection reports being favorable or unfavorable, inspection would continue weekly, monthly, or quarterly, as may be determined. Inspection reports must be kept on file.

Every inspection should consist of a general surface inspection.

a) Pump supports are firmly in place. b) Pump covers over openings are firmly in place. c) Pump coverings, plastics or tarps, are firmly in

place. Any holes or tears must be repaired to prevent entrance of dirt or water.

d) Pump covers are periodically removed from

openings and interior accessible areas inspected. If surface rusting has occurred, clean and repaint or re-coat with preservative.

e) If rusting occurs on exterior surfaces, clean and

repaint or re-coat with preservative.

f) Loosen casing drain plugs to allow seepage of

any accumulated moisture.

g) If the rotor is stored horizontally, rotate pump

rotor 1-1/4 revolutions at least once a month to prevent rotor from taking a permanent set.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

Make sure bearings have adequate

lubrication before turning rotor.

The oil inlet blanking plates should be removed and a small amount of oil injected into the bearings before turning. Refit blanking plates.

h) Periodically remove bearing covers and inspect

for accumulation of moisture, rust and foreign material. As required, clean bearings and bearing housing and re-preserve. Install bearing cover and secure to assure maximum protection. Bearings removed for storage should be coated with preservative, wrapped in oil/wax paper, and stored in a warm dry area.

i) Check individually wrapped parts for signs of

deterioration. If necessary, renew preservative and wrapping.

If storage is over one month, Instrumentation (Controls, Electrical devices, Temperature switches) should be removed and placed in a climate control environment if Instrumentation is not powered up.

2.4.3.3 Prior to installation maintenance

Six months prior to the scheduled installation date, a Flowserve representative is to be employed to conduct an inspection. All costs involved during inspection, dismantling, restoration, replacement of parts, and reassembly will be the responsibility of the customer. The customer will supply all necessary labor, tools, and cranes. This inspection will include (not necessarily in its entirety) but not be limited to the following:

a) An inspection of all periodic inspection records as

kept on file by the customer, and all inspection reports that have been compiled during the storage period.

b) An inspection of the storage area to determine

the “as stored” condition of the equipment prior to any protection being removed.

c) An inspection of the equipment with protection

covers and flange covers removed.

d) Depending upon the length of time the equipment

was stored, the class/type of storage provided, (i.e.: indoor, heated, unheated, ground floor, concrete floor, out-of-doors, under roof, no roof,

waterproof coverings, on concrete, on ground) and as a result of the inspection of a, b and c above, Flowserve representative may require a partial or complete dismantling of the equipment.

e) Dismantling may necessitate restoration of

painted or preserved surfaces, and/or replacement of gaskets, “O” rings and mechanical seal and bearings. Use only Flowserve recommended replacement materials.

Upon completion of the inspection, the Flowserve representative shall submit a report to the Customer, and to the Manager of Customer Service, stating in detail the result of the inspection.

If there are any discrepancies identified, it is the customer's responsibility for correction before initial startup.

2.4.4 Storage non-preferred (wet)

It is not recommended that the rotor be subjected to extended periods of submergence or wetting prior to start-up. However, it is recognized that in some cases, a long period of time may lapse from installation until commercial operation.

If the pump must be stored after being installed and wetted, the following inspection and maintenance should be performed.

• Isolate the pump with valving - tag (seal) all valves.

• Preserve the pump internals.

If storage is over one month, Instrumentation (Controls, Electrical devices, Temperature switches) should be removed and placed in a climate controlled environment if Instrumentation is not powered up.

Electric motors (pump driver) should not be stored in damp places without special protection (refer to motor manufacturer’s instructions).

2.4.4.1 Corrosive pumpage.

Fill entirely the pump with an approved preservative such as #2004-Chempagard 9 from Chempak. The pump should be filled to highest level possible, affording the greatest protection possible to all internal parts of the pump.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

This solution, when drained, will result in a thin residual oil film (less than 0.0127 mm (0.0005 in.)) on all internals after the water has evaporated. This residue provides added corrosion protection until pump is again filled with liquid or put into service.

Pump cannot be fully drained. Volutes in the lower half cannot be drained below the bottom of the main casing bore.

2.4.4.2 Non-corrosive pumpage.

Fill pump with pumpage to the highest level possible. Open periodically drain connection to drain off any moisture that may have accumulated. Refill to highest level possible. Drain and inspect pump prior to startup.

a) Rotate pump rotor 1-1/4 revolutions at least once

a month.

Make sure bearings have adequate

lubrication before turning rotor. b) Periodically remove bearing covers and inspect

for accumulation of moisture, rust and foreign material. As required, clean bearings and bearing housing and re-preserve. Install bearing cover and secure to assure maximum protection.

2.4.4.3 Painting and preservation

Paints and preservatives used are either Flowserve standard or special as required by the contract specification. Refer to 2.1.3, Paint/Rust Preventive for the description of paints and preservatives used in this order or contact the branch office through which the order was placed.

2.5 Recycling and 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 which 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 in the "seal system" or other utilities.

specifications must be in accordance with the current regulations at all times.

Make sure that hazardous substances or toxic fluids are disposed of safely and that the correct personal protective equipment is used. The safety

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

3 PUMP DESCRIPTION

The “DMX” is a multistage single or double suction, opposed impeller, horizontally split volute pump.

The suction and discharge nozzles are cast integral with the lower half casing. Rotating parts are accessible by removing the upper half casing, which can be removed without breaking suction and discharge piping.

3.1 Configurations

The DMX can have the following configurations:

3.1.1 Single suction

Single suction configuration

Single suction impeller at first stage (DMX)

3.1.2 Double suction

Double suction configuration

Double suction impeller at the first stage (DMXD)

3.2 Name nomenclature

The pump nomenclature is: 3X10DMX10

The 3 is the pump discharge size

The X is the separator The 10 is the nominal impeller size The DMX is pump type The 10 is the number of stages and depending

on pump size, they go from 2 to 14 stages

DMX= Single suction standard pressure DMXD = Double suction standard pressure DMXH = Single suction high pressure DMXDH = Double suction high pressure

3.3 Design of major parts

3.3.1 Casing

The casing provides for immediate containment of the liquid being pumped, while directing the flow of liquid from the suction nozzle to the impellers and subsequently through the volute to the discharge nozzle.

The casing halves are sealed by the use of a gasket and are joined together by studs, which are installed in the lower half casing and fastened with washers and cap-nuts.

3.3.2 Impellers

The series’ impellers are single suction, enclosed type, and one-piece construction and are dynamically balanced. They are fitted with renewable impeller rings (front and back), which are held in place by headless set-screws.

The impellers are keyed and have a shrink fit to the pump shaft. They are held in axial position by a split ring.

3.3.3 Casing rings

Casing rings are positioned over the impeller front rings. These rings are tubular and renewable.

3.3.4 Channel rings

Renewable cast channel rings are positioned over the impeller back rings. They divide the casing into stages. These rings are horizontally split and are held together by shoulder screws or dowel pins.

3.3.5 Center sleeve

A renewable type center sleeve is used under the center bushing. The center sleeve is tubular and keyed to the shaft (via the impeller key).

3.3.6 Center bushing

The renewable center bushing is horizontally split, and the two halves are held together by socket head cap screws and taper dowel pins. It is held in position by the raised annular ring of the bushing engaging the annular groove in the casing. The center bushing, in conjunction with center sleeve, divides the casing at the center (back to back) impellers.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

3.3.7 Throttling sleeve

Renewable type throttling sleeve is used under the throttling bushing. The throttling sleeve is tubular, keyed, has a shrink fit to the shaft, and is held in position by a split ring.

3.3.8 Throttling bushing

Renewable type throttling bushing is used. It is held in position by the raised annular ring of the bushing engaging the annular groove in the casing. The throttling bushing, in conjunction with the throttling sleeve, allows pressure to be bled off through the balance line, so that pressure on the Seal Chambers is balanced. The throttling bushing also balances the axial thrust of the pump rotor.

3.3.9 Crossover sleeve

A renewable type crossover sleeve under crossover bushing is only used on double suction pumps (DMXD/DMXDH). The crossover sleeve is tubular, keyed, has a shrink fit to the shaft, and is held in position by a split ring.

3.3.10 Crossover bushing

A renewable type crossover bushing is only used on double suction pumps (DMXD/DMXDH). The crossover bushing is horizontally split, and the two halves are held together by taper dowel pins. It is held in position by the raised annular ring of the bushing engaging the annular groove in the casing. The crossover bushing, in conjunction with crossover sleeve, controls the leakage between the first and second stage impellers.

3.3.11 Shaft

The high strength shaft is ground over its entire length to close tolerances. The shaft is designed to transmit the required power without vibration and is stepped at each impeller fit for ease of assembly and disassembly.

3.3.12 Bearings

The sleeve bearings are carbon steel backed, babbitt lined, sleeve type insert bearings. The renewable bearing inserts are mounted in bearing housings kept from rotating by means of stop pins. Each bearing is lubricated by an external pressure supply system.

The thrust bearing is of the titling type with pads on each side of the shaft mounted thrust collar. It is capable of transmitting the thrust load in either direction. It is lubricated from the pressure lubrication system.

3.3.13 Seal Chambers

The Seal Chambers are cast integral with the casing. Your pump is typically shipped with the mechanical seal already installed.

The mechanical seal is designed to suit each application. This creates the correct seal loading face when seal gland is bolted in place.

Cartridge type mechanical seals are preset at the seal manufacturer’s facility and require no field settings. The seal installation should be checked before startup.

Refer to the mechanical seal manufacturers drawing and instructions found in section 8 of this manual for detailed information.

3.4 Performance and operating limits

Refer to section 10.4 Customer Data Sheet.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

4 INSTALLATION

The installation/commissioning of this equipment must be conducted in accordance with API Recommended Practices 686/PIP REIE 686 First Edition.

Copies of API Recommended ‘Practices’ 686/PIP REIE 686 - First Edition may be obtained from

America Petroleum Institute 1220 L Street, N.W. Washington, D.C. 20005. Telephone: (202) 682-8000.

4.1 Location

Install the unit close to the source of the liquid to be pumped.

Equipment operated in hazardous locations must comply with the relevant explosion protection regulations. See section 1.6.4, Products used in

potentially explosive atmospheres.

When selecting the location, be sure to allow adequate space for operation as well as for maintenance operations involving dismantling and inspections of parts.

Headroom is an important consideration as an overhead lift of some type is required.

4.2 Foundation

The following information regarding foundation is only offered as a general guideline. Flowserve requires that all foundations be designed and installed in accordance with specifications set forth in Chapter 4, Foundations from API Recommended Practices 686/PIP REIE 686, First Edition.

The design of foundation is not the responsibility of Flowserve. It is therefore recommended that the customer consult a competent specialist skilled in the field of foundations, to insure proper design/installation of the foundation.

The foundation should be properly prepared according to the planned grouting method. See 4.3 Grouting for details.

The foundation should be rigid and substantial to support the baseplate at all points to prevent any pump vibration and to permanently.

The most satisfactory foundations are made of reinforced concrete. These should be poured well in advance of the installation to allow proper time for drying and curing.

The General Arrangement Drawing will show required anchor bolt locations and size of bolts.

Allow a little more than the specified threaded bolt length above the rail of the baseplate. The excess can always be cut off if it is not needed.

A clean rough-finish top surface is required when applying grout.

4.2.1 Installation check list

a) Level Baseplate. b) Preliminary Alignment. c) Grout Baseplate - Check Foundation Bolts d) Alignment Shaft/Coupling. e) Piping installed – correct vent, gauge, valve,

suction strainer and pipe support locations? f) Check Coupling Alignment. g) Coupling guard correctly installed?

4.2.2 Level the baseplate

The following information regarding leveling of equipment is only offered as a general guideline. Flowserve requires that all leveling of equipment be performed in accordance with specifications set forth in Chapter 5, Mounting Plate Grouting from API Recommended Practices 686/PIP REIE 686, First Edition.

Before putting the unit on the foundation, thoroughly clean the top of the foundation. Break off any loose pieces of cement and roughen the top with a chisel to afford a good hold for grout.

When lifting baseplate with pump, sling baseplate from all lifting eyes provided. Failure to do

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this may result in permanent deformation of baseplate.

Pump, driver auxiliary equipment and piping shall be removed from the baseplate before leveling the baseplate.

Locate the baseplate in its proper position on the concrete block together with the leveling screws as shown in the General Arrangement Drawing.

Using a precision level across the machined surfaces of the pump and driver mounting pads, adjust leveling screws as necessary to ensure that baseplate is leveled in all directions.

When the baseplate is leveled, snug the foundation bolts, but do not completely tighten.

4.2.3 Preliminary alignment

Using the previous procedure, adjust baseplate until pump and driver are within 0.076 mm (0.003 in.).

4.3 Grouting

The following information regarding grouting is only offered as a general guideline. Flowserve requires that all grouting be installed in accordance with specifications set forth in Chapter 5, Mounting Plate Grouting from API Recommended Practices 686/PIP REIE 686, First Edition. Refer to API 610 - Eighth Edition - Appendix `L` for baseplate grouting requirements. It is recommended that the customer consult a competent specialist skilled in the field of grouting, to insure the proper installation of all grouting.

The following ASTM Specifications are furnished as references for test methods used in conjunction with installation of grouting materials and should be used to obtain proper results:

ASTM C 78-84, Test Method for Flexural Strength for

Concrete ASTM C 109-90, Test Method for Compressive

Strength of Hydraulic Cement Mortars – Modified ASTM C 469-87a, Test Method for Static Modulus of

Elasticity and Poisson’s Ratio of Concrete in Compression

ASTM C 496-90, Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens

ASTM C 531-85, Test Method for Linear Shrinkage and Coefficient of Thermal Expansion of Chemical Resistant Grouts and Monolithic Surfacing - Modified

ASTM C 666-90, Test Method for Resistance of Concrete to Rapid Freezing and Thawing

ASTM C 939-87, Test Method for Flow of Grout for Preplaced Aggregate Concrete (Flow Cone Method)

ASTM C 942-86, Test Method for Compressive Strength of Grouts for Preplaced Aggregate Concrete in the Laboratory

ASTM C 1090-88, Test Method for Measuring Changes in Height of Cylindrical Specimens from Hydraulic Cement Grout

ASTM C 1107-91, Standard Specification for Packaged Hydraulic-Cement Grout (Non-Shrink)

(CRD-C 621-92), ACI 351, Grouting for Support of Equipment and Machinery

24-Hour Test, MBT Test Method for Grout Performance

Minimum requirements for epoxy grout

(typical properties at 23 oC (73 oF)) ASTM D-635, Fire Resistant ASTM C-579B, Minimum Compressive Strength –

12000 psi ASTM C-827, Height Change @ 38 oC (100 oF) –

Positive – Effective Bearing Area – 95% ASTM C-1181, Maximum Creep in 1 Year –

1.6X10

-3

in./in. at 140 oF, 400 psi

ASTM C-307, Minimum Tensile Strength – 12.4 Mpa (1800 psi)

ASTM C-580, Minimum Flexural Strength – 26.2 Mpa (3800 psi)

ASTM C-580, Minimum Flexural Secant Modulus –

1.2X104 Mpa (1.8X106 psi) ASTM C-531, Maximum Coefficient of Expansion –

-6

17X10

in./in./oF. Maximum Peak Exotherm 1000 g (35.27 oz.) insulated – 35 oC (95 oF). Full Aggregate Must Be Used.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

30-40 mm

25 –

50 mm unless

Normal concrete

30-40 mm

NOT FINISH WITH TROWEL

CONCRETE

4.3.1 Grouting material

4.3.1.1 Normal grout material

A quality, high strength, non-shrink cementatious grout material shall be used for installation. Epoxy is preferred.

4.3.1.2 Layered grout material

A layered combination of non-shrink cementatious grout and normal industrial concrete can be used. See sketch below for example.

a) The first layer shall be 25 – 50 mm plus a layer of

30 - 40 mm of normal grout material as described in 4.3.1.1.

b) The second layer is normal industrial concrete

poured to a level that is approximately 30-40 mm from the top of the baseplate decking.

c) The top layer is 30-40 mm normal grout material

as described in 4.3.1.1.

as specified

4.3.2 Grouting method A

a) Prepare the foundation properly as specified in

sketches below.

BOLT

PIPE WASHER

ALLOW BOLTS TO PROJECT FOR GROUTING UNDER BASEPLATE

MAKE THIS DISTANCE EQUAL TO LUG ON BASEPLATE

ALLOW AMPLE THREADED BOLT

LENGTH ABOVE ROUGH FINISH FOR GROUT

ROUGH CONCRETE

STUFF WASTE AROUND

BOLT WHILE POURING

PIPE SLEEVE TO BE

THREE TIMES

DIAMETER OF ANCHOR

BOLT

WELD A LARGE

WASHER WITH LUGS

TO THE BOTTOM OF

BOLT & PIPE SLEEVE

TO PREVENT

TURNING

Foundation complete description

b) Build a dam around the foundation to contain

grout materials.

Before grouting, check level of machined pads of baseplate in both directions and perform a rough shaft/coupling alignment. Alignment after grout has set will not be possible if above is not satisfactorily completed.

c) Grout leveling space and baseplate as per

manufacturer's instructions. Holes are provided in the baseplate to permit

pouring the grout and distributing. Vent holes are also provided in each compartment. Fill under the baseplate completely, stirring to assure proper distribution of the grout. Check to see that the grout flows under the edges of the baseplate evenly.

LEAVE TOP OF FOUNDATION ROUGH DO

FINISHED GROUTING

DAM

Template for hanging foundation bolts The sketch illustrates a recommended foundation

bolt arrangement. Notice the large washer with lugs at the bottom. It should be welded to the bolt and pipe sleeve to prevent turning.

Building dam around the foundation before pouring

grout

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SCREW

Pour grout until level reaches top of dam. Allow drying sufficiently to prevent grout from overflowing while completing the remaining grouting.

Do not vibrate baseplate when grouting; make sure baseplate is vented properly and all areas indicated on General Arrangement drawing are thoroughly filled to prevent any resonant problems.

d) When the grout is thoroughly hardened, remove

the dam.

e) Completely tighten the foundation bolts.

4.3.3 Grouting method B

a) Prepare foundation properly as shown in the

General Arrangement Drawing. The bolt holes shall be tapered to the top.

GROUT BASEPLATE

LEVELING

FOUDNATION

CONCRETE

FOUNDATION BOLTS

GROUT LEVELING SPACE

GROUT BOLT HOLES

Foundation and grouting description

b) Build a dam around the foundation to contain

grout materials.

c) Grout the foundation bolt holes as per

manufacturer's instructions, ensure that the grout fills all open space and eliminates all air pockets.

Before grouting leveling space and baseplate, check level of machined pads of baseplate in both directions and perform a rough shaft/coupling alignment. Alignment after grout has set will not be possible if above is not satisfactorily completed.

d) Grout leveling space and baseplate as per

manufacturer's instructions.

Holes are provided in the baseplate to permit pouring the grout and distributing. Vent holes are also provided in each compartment. Fill under the baseplate completely, stirring to assure proper distribution of the grout. Check to see that the grout flows under the edges of the baseplate evenly.

Pour grout until level reaches top of dam. Allow drying sufficiently to prevent grout from overflowing while completing the remaining grouting.

Do not vibrate baseplate when grouting; make sure baseplate is vented properly and all areas indicated on General Arrangement drawing are thoroughly filled to prevent any resonant problems.

e) When the grout is thoroughly hardened, remove

the dam.

f) Completely tightened the foundation bolts.

4.4 Initial alignment

4.4.1 Shaft/coupling alignment

The following information regarding shaft alignment is only offered as a general guideline. Flowserve requires that all shaft alignment be performed in accordance with specifications set forth in Chapter 7, Shaft Alignment from API Recommended Practices 686/PIP REIE 686, First Edition.

Shaft alignment must be correct for successful operation. Rapid wear, noise, vibration and actual damage to the equipment may be caused by shaft misalignment. The shafts must be aligned within the limits given within this section.

Adjustment to correct the alignment in one direction may alter the alignment in another direction. Always check in all directions after making any adjustment.

Coupled equipment must be aligned to minimize unnecessary stresses in shafts, bearings and coupling. Flexible couplings will not compensate for appreciable misalignment. Foundation settling, thermal expansion or nozzle loads resulting in baseplate/foundation deflection and vibration during

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DRIVER SIDE

operation may require the full coupling misalignment capability.

4.4.1.1 Types of misalignment There are two types of shaft misalignment: Angular and offset. Both types of misalignment can occur in horizontal and vertical planes and are present in most applications.

In angular misalignment, the centerline of the shafts intersects, but is not on the same axis.

PUMP SIDE

Angular misalignment In offset misalignment, the shaft centerlines are parallel but do not intersect.

Offset misalignment

Combined misalignment

4.4.1.2 Alignment methods The following methods may be used to align equipment train. The methods a) and b) are dial indicator based.

a) Rim and face alignment

Rim and face alignment

b) Reverse rim indicator alignment

PUMP SIDE

Reverse rim indicator alignment

c) Laser alignment.

4.4.2 Dial-indicator-based alignment

4.4.2.1 Check soft foot

Soft foot can affect the alignment readings and should be checked first and eliminated on both pump and driver.

a) Tighten hold down bolts. b) Set a dial indicator on one foot, loosen the bolt

and check if there is a indicator reading. If so place a shim with the same thickness as the displacement.

c) Check and adjust all feet.

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4.4.2.2 Set DBSE

The shaft gap, or distance between shaft ends (DBSE), must be in accordance with the certified General Arrangement Drawing and must be measured with pump and driver shafts in the center of their axial end float. Motor with sleeve bearings is to be aligned with rotor at magnetic center.

Move driver to insure proper gap distance.

It is recommended that the pump holddown bolting be torqued before taking any alignment measurements. This makes the pump the fixed machine and the driver the movable machine. In certain cases, however, it may be impractical to move the driver; therefore, the pump may have to be moved.

4.4.2.3 Determine bracket sag

Bracket sag must be determined and included in the alignment calculation.

a) Install clip with extension pieces and dial

indicator(s).

b) Place indicator on top and reset to zero, turn

180° and read indicator and register. c) Record sag reading obtained at the bottom. d) Side to side readings need not to be corrected as

the sag is equal on both sides.

4.4.2.4 Determine misalignment and correct

vertical plane

Before moving the equipment vertically, it is important that the vertical thermal expansion be taken into consideration. Refer to General Arrangement Drawing notes and/or driver instructions for recommended cold vertical setting (if thermal expansion is a factor).

The shims between the motor feet and mounting surface should be clean and dry. This is especially critical for equipment that has been in service for some time and need to be realigned. Water, dirt and rust may change the height of the shim pack over a period of time. Shims should be made large enough to support the weight of the motor on its mounting foot. Do not use many thin shims, as this may result in a spongy mounting.

Recommended shim design

Move the equipment vertically by adding or removing the calculated thickness of shims. Torque equipment hold-down bolting to required values.

4.4.2.5 Determine misalignment and correct horizontal plane

The dial indicators shown below are required to accurately measure the move in the horizontal direction. Move the driver by bumping with soft hammer/mallet or using the jack-screws (if provided). The amount of horizontal relocation required is calculated in alignment data sheet.

TOP VIEW

COUPLING

DIRECTION OF SHAFT

DIAL INDICATORS AT DRIVER FEET

DRIVER (MOVABLE)

Dial indicators configuration

It is recommended, the completed alignment document be retained as part of your permanent maintenance file.

4.4.3 Laser alignment

The use of laser alignment greatly simplifies the alignment process. Because of equipment and software differences, this will only describe laser alignment in general steps.

a) Prior to alignment process the baseplate must be

leveled.

b) Check for soft foot condition. Uneven base

height, dirty or corroded foot or other irregularities

c) Rough align the pump and motor shafts with a

straight edge.

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CLEARANCE

d) Mount the laser emitter on the pump shaft, and

the laser target on the motor shaft. e) Link the shaft ends so they rotate together. f) Adjust shim stack heights for vertical parallelism

and angular alignment per laser unit’s output.

Make the necessary corrections by adding or by

removing shims at the motor feet. g) Adjust the motor position sideways for horizontal

and angular alignment per the laser unit’s output

by using a soft mallet or adjusting screws. h) Tighten all pump and motor feet fasteners. i) Verify the final alignment

4.4.4 Check coupling alignment

The angular and offset coupling alignment must be rechecked.

a) Coupling faces are to be parallel within

0.0254 mm (0.001 in.) TIR.

b) Coupling outside diameters is to be aligned within

0.0762 mm (0.003 in.) TIR.

c) Motor-Driven: “Bump” the motor and check motor

rotation. d) Turbine-Driven: Check turbine rotation. (If wrong,

consult turbine manufacturer.)

4.4.5 Assemble coupling

a) Assemble coupling per the manufacturer's

instructions included in Section 8 of this manual. b) Install coupling guard.

4.4.6 Dowel pump and driver

a) Cold Pumps (temperature below 93 °C (200 °F)) Pump hold down bolts are to be torqued to the

proper value and dowel pins put in two diagonally opposite feet.

b) Hot Pumps Pumps handling liquids at temperatures of 94 °C

(200 °F) and over are designed to permit the casing to expand with temperature away from coupling end of pump. The units that come under this classification must have the pump support feet dowelled to the pedestal at the coupling end. This maintains the coupling gap at the desired amount.

The pump feet at the opposite end are held from moving vertically by the use of a self-locking nut. The clearance between the base of the nut and the top of the pump foot should be 0.051 mm (0.002 in.).

A “Gib Block” running parallel to the length of the pump foot at each of the outboard feet controls the horizontal movement. The "Gib Blocks" are bolted and doweled to the pedestal. A 0.254 mm (0.010 in.) gap is maintained between the "Gib Block" and pump foot.

The self-locking nuts, which hold the pump

from moving in a vertical motion, are clamped tight to the pump foot at time of shipment. The

0.051 mm (0.002 in.) clearance must be established at time of installation.

DOWEL PIN (TYP)

BASEPLATE

PEDESTAL

FLEX LOCK NUT

GIB

BLOCK

PUMP FOOT

BASEPLATE

PEDESTAL

0.002"

GIB

BLOCK

0.010"

Gib block installation sketch for hot pump c) Pump Driver Refer to General Arrangement Drawing and/or driver

instructions for doweling information.

4.4.7 Gib block installation for hot applications

Gib blocks are installed to control the direction of the growth while maintaining pump-driver coupling alignment. They are installed after baseplate has been leveled and grouted, suction and discharge piping connected, and final shaft coupling alignment is completed.

Gib blocks are shipped loose and field installed at the site. The following procedure must be followed for correct installation of gib blocks.

a) Fully torque the hold-down bolts in the driver end

of pumps feet to torque values listed in the instruction manual (refer to Sectional Assembly Drawing in section 8).

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

b) Install the dowel pins in the pump drive end foot

by drilling the foot and the baseplate for the tapered dowel provided.

c) Position the gib blocks to obtain a 0.254 mm

(0.010 in.) clearance between the gib block and the side of the non-drive end pump foot as noted on the attached figure. Drill and tap the cap

screw holes for the gib blocks. d) Tighten the hold-down bolts for the gib blocks. e) Install the dowel pins in the gib blocks by reaming

the block and baseplate for the tapered dowel

provided. f) Tighten the hold-down locknuts on the non-drive

end pump feet to establish a 0.051 mm

(0.002 in.) gap between the locknut and the

pump foot.

4.4.8 Hot alignment check

A hot check can only be made after the unit has been in operation a sufficient length of time to assume its NORMAL operating temperature and conditions. If the unit has been correctly cold set, the offset misalignment will be within 0.076 mm (0.003 in.) TIR and the angular misalignment will be within

0.0254 mm (0.001 in.) TIR when in operation. If not, make adjustments.

Do not attempt any maintenance,

inspection, repair or cleaning in the vicinity of rotating equipment. Such action could result in injury to operating personnel.

Before attempting any inspection or repair on the pump the driver controls must be in the "off" position, locked and tagged to prevent restarting equipment and injury to personnel performing service on the pump.

4.5 Piping

The following information regarding piping is only offered as a general guideline to the customer. Flowserve requires that all piping and related systems be designed/installed in accordance with specifications set forth in Chapter 6, Piping from API recommended practices 686/PIP REIE 686, First Edition.

The design of piping, and related systems, is not the responsibility of Flowserve. It is therefore recommended that the customer consult a competent specialist skilled in the field of piping, to insure proper design/installation of all piping.

4.5.1 Suction and discharge piping

These units are furnished for a particular service condition. Changes in the hydraulic system may affect performance adversely. This is especially true if the changes reduce the pressure at the suction or if the liquid temperature is increased. In case of any doubt contact the nearest Flowserve Office.

Suction and discharge piping should be of ample size, be installed in direct runs, and have a minimum of bends. Eccentric reducer shall be flat on top (FOT).

It is desirable to have at least seven (7) diameter of straight pipe between the first elbow and the pump suction. Elbow in the piping to the pump’s suction nozzle should be of the long radius type.

Seven (7) diameters of straight pipe should be used between two elbows in series and the pump suction.

Elbows in more than one plane should not be used without splitters.

Splitters are placed in the elbow in the mean radius line perpendicular to the plane of the elbow.

Provision must be made to support piping external to the pump to prevent excessive nozzle loads, maintain pump/driver alignment and avoid pipe- induced vibrations.

Install a check valve and a gate valve in the discharge pipe of the pump. When the pump is stopped, the check valve will protect the pump against excessive pressure and will prevent the pump from running backward. The check valve should be installed between the gate valve and the pump nozzle in order to permit its inspection. The gate valve is also useful in priming and starting the pump.

Keep the suction pipe short and direct. Use a suction pipe equal to or one size larger than the pump suction nozzle. Keep the suction pipe free of all air pockets.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

PREFERRED DIRECTION OF FLOW

A spool piece should be installed in suction line so that the suction screen may be installed and removed.

Operation at low flows results in pump power heating the liquid. A bypass may be required to prevent vaporization and subsequent pump damage. Mechanical damage may result from continuous operation at flows less the minimum flow of design operating point (see 10.4 Customer Data Sheet).

When pump is equipped with manifolded

vent and drain lines, each line must be equipped with an individual valve to prevent any liquid from a high pressure line flowing into a low pressure line. These valves must be kept in the closed position during pump operation.

4.5.2 Suction strainer

In a new installation, great care should be taken to prevent dirt, scale and welding beads from entering the pump. Even when piping has been previously flushed, it is difficult to break loose the oxides and mill scale, which will become free when the pipe heats and cools several times. Numerous close running clearances within the pump are vulnerable to abrasive matter present in new piping. Foreign material may be large enough, or of sufficient volume, to jam a pump, with probable damage to both pump and drive equipment. Smaller size material passing through the pump can cause rapid pump wear and premature pump failure.

This pump is provided with the assumption that it will be pumping clean liquids (unless otherwise stated in the order and addressed in the proposal). Flowserve pumps are provided with running clearances ranging typically from 0.12 mm (0.005 in.) to 0.80 mm (0.030 in.), depending on the service and the pump size. It is impractical to install a suction strainer to remove particulate of this size. Such particles will normally pass through the pump without causing damage, provided the concentrations are minor.

The possibility exists that, on shutdown of the pump, such particles can become trapped in the close running clearances during coastdown, causing binding. Flowserve cannot recommend a procedure that will totally prevent such binding; however, we strongly suggest that systems be cleaned and thoroughly flushed prior to connecting the pump to

the piping to minimize particles entering the pump. Starting and stopping of the pump should be MINIMIZED, as pumps are most susceptible to dirt during starts and stops.

In the event that binding on coastdown occurs, it is unlikely that the binding can be remedied by hand rolling the rotor, and partial disassembly may be required to clean the affected parts. It should be noted that increased particle concentrations increase the probability of coastdown binding and seizures, as well as erosion damage.

Excessive force used to try to free a bound rotor may cause damage beyond minor cleanup and repair of rotor parts.

Generally, a pump should not be installed without start-up strainer protection. The suction piping should be thoroughly flushed before installing the suction strainer and connecting the suction piping to the pump. The strainer should be installed in the inlet piping near the pump, making certain that it is located where it may be readily serviced (cleaned). Be sure, however, that the installed strainer will not distort the flow to the pump suction nozzle.

Do not install the strainer directly on the pump suction nozzle. For a cone-type strainer, the downstream end of the cone should be no closer than four (4) pipe diameters from the pump suction nozzle. Basket-type strainers typically introduce greater flow disturbances and should be installed at least six (6) pipe diameters from the pump suction nozzle.

The Flowserve standard for suction strainers consists of conical-shaped steel plate with 1/8 in. perforations see the below picture. The open area of the strainer should be a minimum of three times the area of the pump suction.

At all times when using suction strainers, it is critical that the pressure drop across the strainer be constantly monitored to ensure that the pump suction

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pressure does not fall below that required to prevent pump cavitation. Pressure (or vacuum) gauges should be installed on both sides of the strainer so that the pressure drop across the strainer can be monitored. During start-up of the system, the gauges should be monitored continuously. Consult the plant engineer or system designer for the allowable pressure differential across the strainer prior to operating the pump. Pressure differential across the strainer and/or screen is typically no more than 2 – 3 psig. An increase in the differential pressure between the two gauges indicates that the strainer or screen is becoming clogged with dirt and scale. Before the pressure drop becomes so severe that cavitation occurs, the pump should be shut down and the strainer cleaned. Alarm settings to protect the pump from damaging cavitation and loss of suction need to be supplied by the plant engineer or system designer prior to operating the pump. Typical alarm settings to protect the pump from damaging cavitation and loss of suction would be 5 psig differential pressures across the strainer (screen). The suction piping should be arranged such that the ultimate strainer configuration (location) allows ready access for cleaning.

The strainer may be fitted with a finer screen to filter the inlet flow. When this is done, 40 mesh screens is typically used for start-up operation, at reduced flow rates. For final operation in a closed system, the suction strainers are normally removed after the system is cleaned. For critical pump applications, where continuous screening of suction flow is desirable, and in open systems, 20-mesh screening is typically used for permanent strainers. At all times, when using screens and suction strainers, it is critical that pressure drop across the screen and/or strainer be constantly monitored to ensure that the pump suction pressure does not fall below that required to prevent cavitation.

When dirt and scale have been removed from the system, as indicated by no further change in pressure drop across the strainer with time, the start-up strainer may be removed or the screen may be replaced with one having larger openings. If a permanent strainer will be used during normal operation, the pressure differential needs to be monitored on a continuous basis.

If a permanent strainer is not used, the start-up strainer needs to be temporarily reinstalled whenever the system is opened up for repair or routine maintenance. As long as a suction strainer or screen remains in place, the differential pressure should be monitored on a regular basis.

The pressure drop across the strainer is a direct reduction in the NPSH available to the pump. NPSH available must always exceed the NPSH required by the pump. This requirement may limit the pump flow rate, particularly during start-up operation. Alarms or automatic pump shutdown devices should be installed to minimize the possibility of pump damage. It is the responsibility of the pump operator to obtain the allowable pressure drop across the strainer for safe pump operation from the plant engineer or system designer prior to operation of the pump.

4.5.3 Coupling alignment check

Refer to section entitled shaft/coupling alignment and perform a coupling alignment check as outlined. This check is recommended to insure the alignment has not been disturbed during installing suction and discharge piping.

4.6 Electrical connections

Electrical connections must be

made by a qualified Electrician in accordance with relevant local national and international regulations.

It is important to be aware of the EUROPEAN DIRECTIVE on potentially explosive areas where compliance with IEC60079-14 is an additional requirement for making electrical connections.

It is important to be aware of the

EUROPEAN DIRECTIVE on electromagnetic compatibility when wiring up and installing equipment on site. Attention must be paid to ensure that the techniques used during wiring/installation do not increase electromagnetic emissions or decrease the electromagnetic immunity of the equipment, wiring or any connected devices. If in any doubt contact Flowserve for advice.

The motor must be wired up in

accordance with the motor manufacturer's instructions (normally supplied within the terminal box) including any temperature, earth leakage, current and other protective devices as appropriate.

The identification nameplate should be checked to ensure the power supply is appropriate.

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A device to provide emergency stopping

must be fitted.

If pre-wired is not supplied to the pump unit, the controller/starter electrical details will also be supplied within the controller/starter.

For electrical details on pump sets with controllers see the separate wiring diagram.

Direction of rotation has to be checked

with pump uncoupled.

4.7 Final shaft alignment check

After connecting piping to the pump, rotate the shaft several times by hand to ensure there is no binding and all parts are free.

Recheck the coupling alignment, as previously described, to ensure no pipe strain. If pipe strain exists, correct piping.

To prevent excessive surface temperatures at bearings it is recommended that temperature or vibration monitoring are carried out.

Refer to section entitled shaft/coupling

alignment and perform a coupling alignment check as

outlined. This check is recommended to insure the alignment has not been disturbed during the grouting of the baseplate or while installing suction and discharge piping.

4.8 Protection systems

The following protection systems are recommended particularly if the pump is installed in a potentially explosive area or is handling a hazardous liquid. If in doubt consult Flowserve.

If there is any possibility of the system allowing the pump to run against a closed valve or below minimum continuous safe flow a protection device should be installed to ensure the temperature of the liquid does not rise to an unsafe level.

If there are any circumstances in which the system can allow the pump to run dry, or start up empty, a power monitor should be fitted to stop the pump or prevent it from being started. This is particularly relevant if the pump is handling a flammable liquid.

If leakage of product from the pump or its associated sealing system can cause a hazard it is recommended that an appropriate leakage detection system be installed.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

5 COMMISSIONING, START-UP,

OPERATION AND SHUTDOWN

Commissioning of all equipment must be performed in accordance with specifications set forth in Chapter 9, Commissioning from API Recommended Practices 686/PIP REIE 686, First Edition.

These operations must be carried

out by fully qualified personnel.

5.1 Precommissioning procedure

a) Never operate the pump with suction valve

closed.

b) Never operate pump unless it is filled with liquid

and vented.

c) Never operate the pump unless a liquid source is

available.

d) Never operate the pump without proper

lubrication.

5.1.1 Pre-operational checks

At initial start-up and after the equipment has been overhauled:

a) Ensure pump and piping are clean. Before

putting the pump into operation, it should be thoroughly flushed to remove the rust preventive as well as any foreign matter, which may have accumulated during installation.

Isolate the pump from pipe work, flush out the pipe work then flush the pump. This operation must be carried out thoroughly because the pump contains many close running clearances, which will be damaged by dirt particles. Take all possible care not to contaminate your system.

b) Clean and flush bearing housings and lubrication

system. (see pump lubricants).

c) Turn rotor by hand or with strap to make sure it

turns freely.

d) Ensure that the mechanical seal is properly

assembled and tightened.

Most cartridge seals are equipped

with a spacer between the gland plate and drive

collar. This spacer must be removed before starting unit.

e) Ensure coupling is properly aligned and

lubricated; and pump and driver are properly doweled. (Refer to shaft /coupling alignment

procedure). f) Ensure coupling guard is in place. g) Check torque of all bolting and plugs for

tightness.

5.1.2 Pump instrumentation set points

The following set points apply to DMX Pumps, which use the sleeve/KTB bearing arrangement.

a) Bearing metal temperature

• Normal 60 oC to 82 oC (140 oF to 180 oF)

• Alarm 85 oC (190 oF)

• Shutdown 90 oC (200 oF)

b) Bearing housing vibration

• Normal 2.5 to 7.6 mm/s (0.1 to

0.3 in./sec)

• Alarm 10.2 mm/s (0.4 in./sec)

• Shutdown 12.7 mm/s (0.5 in./sec)

c) Radial shaft vibration

• Normal 0.025 to 0.050 mm (1 to 2 mils)

• Alarm 0.076 mm (3 mils)

• Shutdown 0.102 mm (4 mils)

5.1.3 Initial start up procedure

a) Close discharge valve if a bypass system is

used. If not, crack open the discharge valve.

b) Prepare the driver for start-up in accordance with

the manufacturer’s instructions. c) Warm-up pump (if required). Avoid severe thermal shocks to the pump as a result

of sudden liquid temperature changes. The pump must be preheated prior to start-up. Unless otherwise specified, the external temperature of the casing must be within 55.6 °C (100 °F) of the temperature of the liquid to be pumped at time of start-up.

Pump temperature stratification could occur. A maximum temperature delta of 28 °C (50 °F) between the upper and lower case shall be checked prior to starting the pump.

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Due to the heavy metal sections, the casing will lag the liquid temperature during such changes, and severe temperature stresses and subsequent misalignment of machined fits may result. Preheating is accomplished by circulating a small amount of hot fluid through the casing by utilizing vents, drains or bypass from discharge and suction. Preheat pump slowly at a rate not to exceed 55.6 °C (100 °F) per hour.

d) Prime pump and ensure pump suction valve and

bypass isolating valve are open.

Before starting or while operating the pump, the casing and suction line must be completely filled with the liquid being pumped. The rotating parts depend on this liquid for lubrication, and the pump may seize if operated without liquid.

e) Ensure pump recirculating line (if provided) is

open and free of obstructions.

f) Check that pump is vented by observing leakage

from casing vent and seal piping vent. Close vent

when liquid is emitted. g) Make sure seal piping is turned on. h) Prepare the driver for start-up in accordance with

the manufacturer’s instructions. i) Check pump rotation by starting unit

momentarily. The direction of rotation is shown

on 10-4, pump data sheet. Note the pump coasts

to a gradual stop.

If pump stops abruptly when driver is shut down, investigate for pump binding. Take necessary remedial action before resuming operation.

j) Starting the driver (motor driven). k) Starting the driver (turbine driven). Start the turbine and bring it up to speed quickly. l) As soon as the pump is up to rated speed, open

discharge valve. This will avoid abrupt changes in velocity and prevent surging in the suction line.

5.2 Pump lubricants

Operation of the unit without

proper lubrication can result in overheating of the bearings, bearing failures, pump seizures and actual breakup of the equipment, exposing operating personnel to injury.

Oil is supplied to the pressure lubrication system by one of the two oil pumps. The main oil pump is mounted on a support head which is bolted to the thrust end bearing body and cap and is driven by the main pump shaft via a coupling.

An auxiliary oil pump is furnished to supply oil to the pressure lubrication system to be used as a minimum for start up, shut down or periods when the main oil pump can not supply sufficient oil. Whilst the operational logic of the system is outside the scope of this section refer to the lube system control panel manufacturer for actual logic. It is a requirement to have oil supplied to the bearings prior to running the machine i.e. start the auxiliary oil pump prior to start up of the main train, and for shut down of main machine or indeed at any time the main oil pump fails to deliver sufficient quantity of oil.

During operation, oil is taken from the oil reservoir by the pump and is directed through the oil filter and is then supplied to the pump/drive bearings. A back pressure relief valve mounted in the lubrication system maintains the required system oil pressure. The system is additionally equipped with a low pressure, pressure switches, which can be used to control the unit when the oil pressure in the lubrication system decreases to predetermined values or prevents the starting of the unit until adequate oil pressure is established. A gravity assisted, sloped oil return line conducts the oil from the pump/driver bearings back to the system reservoir.

A check valve is mounted in the auxiliary oil pump discharge line to prevent oil from returning to the oil reservoir when the main oil pump is running and the auxiliary oil pump is shut down.

5.2.1 Lubricating oil

Oil requires frequent replenishment at normal operating temperatures and very frequent replenishment at elevated operating temperatures. Oil is always subject to gradual deterioration from use and contamination from dirt and moisture. This deterioration and contamination will, in time, be harmful to the bearing and cause premature wear. For this reason, oil should be checked for contamination and deterioration regularly.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

Oil Cleanliness Values

Oil replacement interval

The frequency of oil change depends on the operating conditions and the quality of the lubricant. Oil should be checked for deterioration and contamination weekly during periods of operation.

The following guideline is based on the Cleanliness Code described in ISO 4406-1999.

5.2.2 Oil specifications

Straight mineral oils without additives are generally preferred for bearing lubrication. It should preferably be of the turbine type and not contain free acid, chlorine, sulfur or more than a trace of free alkali. Quality mineral oils with a minimum Viscosity Index (VI) of 95 is recommended.

Intervals

During Factory Tests 20 18

First 100 hours of

Field Operation

Every 2000 hours of

Field Operation

ISO 4406 Cleanliness Code

R6µm R14µm

20 18 19 17

An ISO Viscosity Grade (VG) Number identifies lubricating oils. The VG Number is the viscosity of the oil at 40 °C. (104 °F.) in centistokes, see table b elow.

In the majority of instances, a turbine oil with a VG Number of 46 (nominally equivalent to SAE 20) will meet rolling element bearing lubrication requirements (see oil temperature).

The listed oil cleanliness values are for reference only. Deviations from the listed values should be communicated to Flowserve for evaluation.

parts requiring lubrication.

Lubricant must be compatible with all

Mineral oils oxidize and should be replaced at intervals described in the table below.

Typical Oil Operating

Temperature

Ambient Stand by 6 calendar months

Ambient – 71 °C

(Ambient to 160 °F)

71 °C – 82 °C

(160 °F – 180 °F)

> 82 °C

(> 180 °F)

Operating

Cycle

Continuous 3 calendar months

Continuous

Oil Change

Interval

As specified by

Flowserve

Notes

Longer intervals between replacements may be

possible at these operating temperatures, but 3 month

intervals are recommended to protect against normal

oxidation, contamination, and deterioration. Regular oil

monitoring can inform this decision.

3 month intervals are recommended to protect against

normal oxidation, contamination, and deterioration.

Continuous operation at oil temperatures above 82 °C

(180 °F) requires consultation with Flowserve.

Oil specifications and characteristics

Oil Characteristics Operating Oil Temperature 16 oC - 38 oC (60 oC -100 oF) 38 oC - 82 oC (101 oF -180 oF).

Saybolt Viscosity (SSU) 38 oC (100 oF) 158 Seconds 215 Seconds Pour Point -7 oC (20 oF) -7 oC (20 oF) Flash Point 204 oC (400 oF) 204 oC (400 oF) Recommended ISO Viscosity

Grade (VG) Number

32 46

5.2.3 Oil temperature

Oil temperature should be maintained between 16 oC (60 oF) and 82 oC (180 oF).

a) Drain the oil in the bearing housing(s) and

replace with warm oil.

b) Heat the bearing housing(s) using heat tape (or

other suitable means).

The minimum bearing oil temperature is 16 oC (60 oF). If necessary, prior to startup, one of the following procedures should be employed:

c) Circulate warm liquid through the cooling jacket

or immersion cooler (if supplied).

d) Utilize oil with a lower viscosity, or VG number, or

consider using a synthetics hydrocarbon oil with

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

a low pour point to give a viscosity similar to that of ISO 46 (for maximum oil operating temperatures of 180 °F) or ISO 32 (for maximum oil operating temperatures of 120 °F).

ISO 46 is recommended for continuous operating oil temperatures between 38 °C (100 °F) and 82 °C (180 °F), with a minimum startup temperature of 16 °C (60 °F); ISO 32 may be considered for continuous operating oil temperatures between 16 °C (60 °F) and 49 °C (120 °F), with a minimum start up temperature of 4 °C (40 °F). For startup when oil temperature is below 4 °C (40 °F), oil preheating is recommended.

5.2.4 Cleaning the lubrication system prior to

operation

Before operating the pump, the lubrication system should be thoroughly cleaned to remove any foreign matter that may have accumulated during shipment, storage or installation.

To clean the lubrication system refer to the Sectional drawing and proceeds as follows:

a) Remove the bearing caps, bearing linings, thrust

shoes and drain plugs.

b) Flush out the bearing housings with kerosene or

other suitable solvent.

c) Wash the bearing linings and thrust shoes with a

suitable solvent.

d) Flush the entire lubrication system with oil.

Flushing oil should be compatible with lubricating oil that will be used. Follow any instructions given for the lubrication console.

e) During flushing operation, examine the piping for

leaks and correct as necessary. Also check for any obstructions that will interfere with free flow of oil to the bearings.

f) After flushing, replace drain plugs. Reassemble

bearings and torque end cover bolting. (Refer to maintenance section.)

g) Refer to driver instruction book for instructions

covering flushing of driver bearings.

5.3 Impeller wearring clearance

Please refer to the sectional drawing for ring and bushing clearance value.

5.4 Direction of rotation

Check pump rotating by starting momentarily the direction of rotation is shown in 1.5 duty conditions, Note pump coasts to a gradual stop.

5.5 Guarding

Guarding is supplied and fitted to the pump

set.

Fasteners must remain captive in the guard

when the guard is removed to comply with Machinery Directive 2006/42/EC.

Whenever guarding is removed or disturbed

ensure that all the protective guards around the pump coupling and exposed parts of the shaft are securely fixed.

5.6 Priming and auxiliary supplies

Ensure all electrical, hydraulic, pneumatic, sealant and lubrication systems (as applicable) are connected and operational.

Ensure the inlet pipe and pump casing are completely full of liquid before starting continuous duty operation.

5.7 Starting the pump

5.7.1 Initial start up

See 5.1.3 Initial start up procedure.

5.7.2 Normal start up

The starting procedure to be followed for normal start-up is the same as that for initial start-up. When automatic recycle valve is used, discharge valve can be opened.

5.8 Running or operation

Do not wipe down in the vicinity of rotating

parts, if unusual noise or vibrations occur, secure the pump as soon as possible.

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The unit must not be operated unless

coupling guard is bolted in place. Failure to observe this could result in injury to operating personnel.

When pump is equipped with manifolded

Observe extreme caution when venting

and/or draining hazardous liquids. Wear protective clothing in the presence of caustic, corrosive, volatile, flammable, or hot liquids. Do not breathe toxic vapors. Do not allow sparking, flames, or hot surfacing in vicinity of the equipment.

The pump should not be operated

outside of the design speed range. a) Never operate the pump with suction valve

closed.

b) Never operate pump unless it is filled with liquid

and vented.

c) Never operate the pump unless a liquid source is

available.

d) Never operate the pump without proper

lubrication.

5.8.1 Operating checks

In the interest of operator safety, the unit must not be operated above or below the nameplate conditions. Such operation could result in unit failure causing injury to operating personnel.

Operation at low flows results in pump power heating the liquid. A bypass may be required to prevent vaporization and subsequent pump damage. Mechanical damage may result from continuous operation at flows less than the minimum flow specified in the section 10.4 Customer Data

Sheet.

Immediately after start-up, and frequently during running, check the following:

a) Check suction and discharge pressure gauges. b) Check pressure gauges on each side of suction

strainer. c) Check for excessive leakage. d) Check for unusual noises. e) Check lubrication system. f) Check for adequate flow of cooling liquids. g) After unit has been operated a sufficient length of

time to reach normal operating temperature and

condition, the unit is to be shut down and a

“HOT” coupling alignment check must be made.

(Refer to shaft /coupling alignment procedure).

Operation of the unit without appropriate

lubrication can result in overheating of the bearings, bearing failures, pump seizures and actual breakdown of the equipment, exposing operating personnel to injury.

5.9 Stopping and shutdown

If motor driven, de-energize driver circuit. If turbine driven, stop turbine-driven pumps by manually tripping the overspeed trip.

If pump stops abruptly when driver is shut down, investigate for pump binding. Take necessary remedial action before restarting pump.

If pump is subjected to freezing temperatures, the pump must be drained of liquid to prevent damage to pump.

a) Close the pump suction and discharge valve. b) Close valve in bypass line. c) Drain the pump. d) Turn off the auxiliary oil pump and cooling liquid

when supplied.

5.10 Hydraulic, mechanical and electrical

duty

These pumps are furnished for a particular service condition. Changes in the operating system design may affect the pump’s performance adversely. This is

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especially true if the changes reduce the pressure at the suction flange or if the liquid temperature is increased. In case of doubt, contact the nearest Flowserve office.

5.10.1 Specific gravity (SG)

The capacity and total head in m (ft) of liquid developed by a centrifugal pump are fixed for every point on the curve and are always at the same speed. Neither capacity nor total head will be affected by a change in the specific gravity of the liquid pumped. However, since the developed pressure in bar (psi) and the power to drive the pump are a function of the specific gravity of the liquid, both will be affected in direct proportion by any change in specific gravity. Therefore, a change in specific gravity will affect the discharge gauge pressure and power. Any changes should be noted, in that they may overload the pump’s driver.

5.10.2 Viscosity

The pump is designed to deliver rated capacity at rated head for a liquid with a particular viscosity.

When contemplating operation at some viscosity other than that for which the pump was originally designed and/or applied, the changed conditions should be referred to Flowserve for recommendations.

5.10.3 Changing the Pump speed

Changing the speed of a centrifugal pump changes the capacity, total head and brake Horse Power. The capacity will vary in a direct ratio with the speed, whereas the total head will vary as the ratio of the speed squared. The brake Horse Power will vary as the ratio of the speed cubed except in cases where the speed change also affects the efficiency of the pump.

When contemplating speeds other than of the original condition, refer to Flowserve for recommendations.

5.10.4 Net positive suction head (NPSH)

Any liquid, hot or cold, must be forced into the impeller of the pump without vaporization by the pressure of the vessel from which the pump takes its suction.

The head of liquid necessary to force the required flow into the pump is called the Net Positive Suction Head. This value, more commonly called NPSH, is the head above the vapor pressure of the liquid at the pumping temperature.

There are two kinds of NPSH: The NPSHR by the pump, as shown on the pump curve, is the head needed to cover the losses in the pump suction. The second NPSH is that available in the system, taking into account the friction loss in suction piping, valves, fittings etc. In all cases the NPSHA (measured above vapor pressure) must exceed the NPSHR in order to push the liquid into the pump.

Failure to have an adequate margin of NPSHA over NPSHR will cause a reduction of pump performance and internal damage to the pump.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

Preventive Maintenance Item

Instructions

Frequency

6 MAINTENANCE

Your pump is a precision machine. Take every precaution to avoid damage or slight burrs to the shaft bearing areas, as well as any other ground, finished surface when dismantling your pump.

It should be understood that the information contained in this manual does not relieve operating and maintenance personnel of the responsibility of exercising normal good judgment in operation and care of the pump and its components.

Before performing any disassembly, maintenance and/or inspection on the unit, the following steps should be taken and warnings observed.

a) Tag driver controls in the "off" position.

Before attempting any inspection or repair

on the pump, the driver controls must be in the "off" position, locked and tagged to prevent injury to personnel performing service on the pump.

b) Isolating Pump.

Before attempting to disassemble pump,

pump must be isolated from system, by closing suction and discharge system valves, drained of liquid and cooled, if pump is handling hot liquid.

c) Draining pump.

• If handling hot liquids When pump is handling "hot" liquid,

extreme care must be taken to ensure safety of personnel when attempting to drain pump. Hot pumps must be allowed to cool before draining.

• If handling caustic liquids When pump is handling "caustic" liquid,

extreme care must be taken to ensure safety of personnel when attempting to drain pump. Protective devices of suitable protective materials must be worn when draining pump.

• If on vacuum service. Before attempting any maintenance work on

pumps in vacuum service, pumps must be isolated from suction and discharge system then carefully vented to return pressure in pump casing to atmospheric pressure.

6.1 Maintenance schedule

Although your Flowserve pump has been designed for extended, trouble-free service, certain preventive maintenance measures should be performed on a regular basis to ensure optimum performance. A well-planned program of routine maintenance is the best assurance of dependable operation. The following preventive maintenance (PM) inspections are suggested as a minimum, and may be supplemented by the experience of the operating personnel.

Pump cannot be fully drained.

Suction strainer when used Check pressure differential between the gauges located

on each side of the strainer.

Pump Suction and Discharge Pressure/Flow Rate

Mechanical Seal Inspect visually Daily Instrumentation Check all related pressure gauges, temperature and

Shaft rotation (Down periods only)

Auxiliary piping Check for leakage around connections, etc. Weekly Shaft/bearing housing

vibration Bolting tightness Check all external bolting for proper torque. Monthly

Cleanliness General clean-up soiled areas Quarterly Oil system Refer to Lubrication System section of instruction manual. Periodically

Check suction and discharge pressure/flow rate for proper pump operation.

detectors, etc. to detect any abnormalities. During extended down periods rotate the shaft by hand

1-1/4 times to prevent shaft binding.

Review all vibration data for any abnormalities and/or sudden changes in levels.

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Daily

Monthly

Weekly

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

6.2 Spare parts

6.2.1 Ordering of spares

Flowserve keep records of all pumps that have been supplied. When ordering spares the following information should be quoted:

• Pump serial number

• Pump size/type

• Order number

• Part name – taken from section 8 or pump

sectional drawing

• Part number – taken from section 8 or pump sectional drawing

• Number of parts required – taken from section 8 or pump sectional drawing

The pump size and serial number are shown on the pump nameplate.

Order number should be taken from 10.4 Customer

Data sheet.

For 24-Hour part ordering service, call Flowserve Distribution Center at +1 800 526 3569.

To place an order, contact the nearest Flowserve office found at www.flowserve.com.

The use of parts other than Flowserve

approved parts may create hazardous conditions over which Flowserve has no control. Such hazardous conditions can lead to injury, or result in damage to the equipment. Flowserve does not support nor will be responsible for the use of non Flowserve furnished parts nor the use of materials that are not as originally furnished without the expressed written approval of Flowserve.

6.2.2 Service instructions

For 24-hour emergency repair service, contact the Flowserve Service Department at +

8671

or +1 908 859 7372 or contact the nearest

Flowserve Service Center.

6.2.3 Storage of spares

Spares should be stored in a clean dry area away from vibration. Inspection and re-treatment of metallic surfaces (if necessary) with preservative is recommended at 6 monthly intervals.

1 800 547

6.3 Recommended spares and consumable items

A recommended spare parts classification is offered for Flowserve parts furnished on this unit. The classification of a required part can be identified by referring to the appropriate assembly drawing and parts list included in section 8 of this manual.

The recommended spare parts are divided into three classifications, which are defined below.

a) CLASS 1 (Minimum): Covers recommended

spare parts for a single unit where additional spare parts are ordinarily available from branch or dealer stock. Suggested for Domestic Service handling non-corrosive liquids where interruptions in service are not objectionable. This include gaskets and bearings that are not reusable.

b) CLASS 2 (Average): Covers recommended

spare parts for a single unit where additional spare parts are not readily available. Suggested for Domestic Service handling abrasive or corrosive liquids where some interruptions in service are permissible. This includes Class 1 spares plus all renewable wear parts.

c) CLASS 3 (Maximum): Covers recommended

spare parts for a single unit where maximum protection from major shutdown must be considered. Suggested for Export Service or Domestic Service where minimum loss of service is essential. This includes Class 1 & 2 spares plus a spare rotating assembly.

The Flowserve Sales Representative in your area will gladly review the class of spares best suited to your requirement.

6.4 Tools required

No special tools are required to assemble or disassemble the pump. Common mechanical tools are sufficient. However we recommend torque wrench to tighten and remove all fasteners.

6.5 Fastener torques

6.5.1 Torque values

The torque values are given for each stud size for both standard casing and high pressure casing with a cross reference to hydro-pressures.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

STUD SIZE

INCH UN 8 Nm lbfft Nm lbfft

1.125 750 550 930 685

1.250 1050 775 1310 965

1.375 1425 1050 1775 1310

1.500 1700 1250 2100 1550

1.625 2300 1700 2875 2120

1.750 3150 2320 3930 2900

1.875 4200 3100 5220 3850

2.000 4600 3400 5760 4250

2.250 6670 4920 8340 6150

2.500 9220 6800 11525 8500

2.750 12420 9160 15525 11450

3.000 16160 11920 20200 14900

DMX/DMXD

PUMP

DMXH/DMXDH

PUMP

The above torque values will be applied only when the casing hydro test pressure is equal to or less than the values showing in the following table. Any hydro test pressure exceeding these values must have torque values cleared by Flowserve.

PUMP TYPE 3x8DMX 207 3000

3x10DMX 276 4000 3x10DMXH 414 6000 4x10DMX/DMXD 276 4000 4x10DMXH/DMXDH 414 6000 4x11DMX/DMXD 276 4000 4x11DMXH/DMXDH 414 6000 6x11DMX/DMXD 276 4000 6x11DMXH/DMXDH 379 5500 6x13DMX/DMXD 224 3250 6x13DMXH/DMXDH 345 5000 8x13DMX/DMXD 224 3250 8x13DMXH/DMXDH 248 3600 8x14DMX/DMXD 224 3250 8x14DMXH/DMXDH 248 3600 8x15DMX/DMXD 207 3000 8x15DMXH/DMXDH 248 3600 10x16DMXD 186 2700

MAX. HYDRO PRESSURE

bar psi

The above torque values apply only to standard stud material, i.e. ASTM A193 GrB7. Any other material must have torque values cleared by FLOWSERVE.

The above torque values assume good thread well greased.

When reassembling the pump, all fasteners

must be tightened to the correct torque value. Failure to observe this warning could result in injury to operating personnel.

6.6 Disassembly

For a better understanding of this section please refer to the exploded views drawings in section 8.

6.6.1 Dismantling procedure

a) Remove all auxiliary piping and instrumentation

that will interfere with disassembly, and drain oil from bearing housings.

Use extreme caution not to expose

maintenance personnel to hot liquids when removing auxiliary piping or draining bearing housings.

b) Remove temperature detectors (if supplied) and

all other instruments from bearing housings.

c) When mechanical seals are used, loosen piping

and seal gland bolting.

6.6.2 Removal of seal chamber parts

To remove mechanical seal from pump: a) Install setting plates/eccentric washer in place. b) Loosen drive collar. c) Remove gland bolting. d) Slide mechanical seal from shaft after bearing

housings are removed as described in 6.6.4 and

6.6.5. Seal may be disassembled/inspected/reassembled

per seal manufacturer’s drawing and instructions in Appendix of this manual.

After reassembly of seal, setting plates/eccentric washers must be removed before start-up.

6.6.3 Coupling removal

Remove coupling guard. Remove coupling bolting and remove the spacer piece (if used). Loosen setscrews in coupling nut and remove nut.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

The use of a puller will be required to remove it from the shaft.

6.6.4 Thrust bearing removal

a) Remove cap-screws [6570] from bearing end

cover [3266]. Remove end cover and shims [3126]. Tag and record thickness of shims for reassembly.

If pump is equipped with shaft driven main oil pump, "Driver Half" and "Rubber Spider" of coupling should be removed and wired to the support head.

b) Loosen set-screw [6570] in pump side flinger

[2540] and slide it back on the shaft towards the Seal Chamber.

c) Remove cap-screws [6570] and dowel pins

[6810] from bearing housing [3200]. Rig eyebolt [6820] in bearing housing cap to an overhead hoist and lift bearing cap from bearing housing and place on blocking on floor.

d) The inboard and outboard thrust bearing

assembly [3032] can now be removed from the bearing housing [3200]. Tag assemblies to ensure they will be returned to their original position. Refer to thrust bearing drawing and instructions.

e) Remove cap screws and dowel pins from bearing

lining [3020].

f) Remove upper half of bearing lining. Raise shaft

slightly and roll out the lower half lining.

g) Remove cap-screws [6570] and dowel pins

[6810] holding bearing housing [3200] to casing and remove bearing housing and place on blocking on floor.

h) Loosen set screws [6570] in lock nut [3713].

Remove lock nut and bearing seal ring [4020].

i) Remove thrust collar [3610] and key [6700].

It may be necessary to apply heat to thrust collar to remove it. Do not allow temperature to rise above 104 °C (220 °F) when heating thrust collar. Temperature can be checked with "tempil stick".

j) Remove thrust bearing shims [3126]. Record

thickness of shims and tie together to prevent

shims. Remove flinger [2540] and bearing seal ring [4020].

6.6.5 Plain bearing removal

a) Loosen Allen set-screw [6570] from coupling side

flinger [2540] and remove flinger from end of shaft.

b) Loosen Allen set-screw [6570] from pump-side

flinger [2540] and slide flinger back on shaft towards the mechanical seal.

c) Remove cap-screws [6570] and dowel pins

[6810] from bearing housing [3200]. Rig eyebolt [6820] in bearing cap to an overhead hoist and lift bearing cap from bearing housing and place on blocking on the floor.

d) Install two eyebolts in diagonally opposite corners

of bearing housing [3200] and rig to an overhead hoist. Remove cap-screws [6570] and dowel pins [6810] which secure bearing housing to casing. Using the overhead hoist, lower and remove bearing housing [3200] away from casing and place on blocking on the floor.

e) Remove cap screws [6570] and dowel pins

[6810] from bearing lining [3020]. Remove upper half of bearing lining. Raise shaft slightly and roll out the lower half lining

6.6.6 Rotor removal

a) Remove cap-nuts [6580] and washers [2905]

holding the upper half casing to the lower half. Remove dowel pins [6810]. Using jack-screws [6570] in lower half casing, break the seal between upper half and lower half casing. Rig upper half casing to overhead hoist using the two cast lifting lugs.

The cast lifting lugs provided on upper half

casing are for lifting upper half casing only. Do not lift pump from these lugs.

Carefully lift upper half casing and place on boards to protect machine surfaces.

b) Rig slings around shaft close to impellers. Rig the

slings to an overhead hoist. Carefully lift rotor [2000] from lower casing and place on horses for further dismantling.

Casing wearing rings [1500], channel rings [1500], throttle bushing [1630], center bushing [1600] , seal chamber bushings [4132] and crossover

Page 37 of 60

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

2nd

HEAT

1st

HEAT

bushing [1600] if double suction design (DMXD and DMXDH) will be removed with rotor.

Block to prevent rolling.

c) Remove seal chamber bushings [4132] and

throttle bushing [1630] from shaft ends.

d) Remove casing rings [1500] from the two outer

impellers at each end of the rotor.

In case of double suction pump (DMXD and DMXDH), remove crossover bushing [1600]. Crossover bushing is horizontally split and held together by dowel pins [6810].

e) Remove channel rings [1500] from impeller back

ring at each impeller. Channel rings are horizontally split and are held together by shoulder screws or dowel pins.

Channel rings are precision machined as a set, after being dowelled. They should be match marked and numbered for reassembly purposes. It is suggested that the two halves be placed back together immediately.

f) Remove center bushing [1600] from center (back

to back) impellers. Center bushing is horizontally split and held together by socket head capscrews [6570] or dowel pins [6810].

6.6.7 Dismantling the rotor

a) Remove throttling sleeve [2430].The throttling

sleeve has a shrunk fit to the shaft and will have to be heated to remove. Heat throttling sleeves O.D. evenly throughout its length to approximately 149 °C (300 °F) using a torch with a fine tip.

• Push throttling sleeve inboard (towards impeller)

• Remove split ring [2531]

• Throttling sleeve can now be removed from

end of shaft

• Remove throttling sleeve key [6700]

b) Heat (per procedure in 6.6.8) and remove the first

outboard impeller [2200], split ring [2531] and impeller key [6700].

When heating parts, gloves or other suitable

protection must be worn.

After impeller is heated, it will have to be pushed towards the center of the pump, the split rings [2531] removed and quickly pulled from the end of the shaft.

The shaft is step machined at each impeller fit to ease the disassembly process. It is recommended that each impeller be marked with stage number to insure proper reassembly.

6.6.8 Heating impellers for removal

a) Apply heat (torch with fine tip) to periphery [outer

38 mm (1.5 in.)] of impeller until temperature reaches 191 °C (375 °F) (minimum) to 204 °C (400 °F) (maximum). Use "tempilstick" to determine temperature.

b) Maintaining temperature between. (191 °C –

204 °C (375 °F – 400 °F) at the periphery, apply heat down through the vane passages, thus heating the hub.

c) Do not apply heat directly to shaft; this will cause

it to expand.

d) With periphery, shroud and hub at temperature,

remove impeller.

e) If the impeller does not move freely off the shaft,

additional heat may be necessary. This heating should be started at the periphery of the impeller, not the hub. (Additional heating of the hub area at this time will tighten the impeller on the shaft, not loosen it). If the impeller still fails to come free, the impeller and shaft should be allowed to cool completely and the heating process repeated, starting at Step a).

Heating impeller for removal

f) Remove casing ring [1500] from the next impeller

on the outboard impellers.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

g) Repeat Steps c) and d) until all impellers are

removed on the outboard impellers.

Let entire rotor cool after removing several components with heat as there may be a build-up of heat in the rotor.

h) Heat must be applied to remove center sleeve

[2450].

i) Continue to disassemble the impellers by

repeating steps c) and d) until all impellers [2200] have been removed from the shaft.

In case of double suction pump (DMXD and DMXDH), remove crossover sleeve [2450] after the first stage impeller is removed by applying heat.

6.6.9 Impeller ring removal

Remove impeller rings by removing the set-screws [6570] and machine off.

6.6.10 Parting flange gasket

Remove all traces of old gasket [4590] material. When using any tool to surfaces remove gasket material, do not gouge machined surfaces. Do not reuse the gasket once the casing is opened. Use only Flowserve recommended replacement materials.

6.7 Examination of parts

6.7.1 Inspection and renewal of parts

a) Having completely dismantled the rotor, check

the shaft for runout using "V" blocks or rollers placed under the normal running areas. Runout not to exceed 0.050 mm (0.002 in.) TIR.

b) Wire-brush the pump parts thoroughly. Clean off

all scale, carbon etc. Examine parts for wearing corrosion and erosion.

c) Check throttling sleeve, center sleeve and

crossover sleeve (if supplied) for wear. Replace if required.

d) The casing ring/impeller rings are renewable and

should be replaced when badly grooved, and/or when the pump performance does not meet the system requirements. Whenever it becomes necessary to replace either wearing ring, both rings involved (casing ring and impeller ring) must be ordered and replaced as they are furnished standard size only.

If new casing rings are used, make sure that they seat in both the upper and lower half casing and that the anti-rotation device is properly located in its respective lower half casing fit. The use of a scraper on the ring to casing fit will help to fit the ring to the casing.

e) Using a torch could change the metallurgy of the

rings if too much heat is applied. Removing impellers with torch is acceptable but putting on new impeller rings shall be done with oven instead of torch.

6.7.2 Dynamic-balance impeller

Whenever an impeller is tampered with, (i.e. new impeller, wear rings installed etc.) the impeller must be dynamically balanced before being reassembled to shaft.

Dynamic balance shall be performed on a suitable balancing machine by trained personnel.

Two balance planes shall be used and located equidistance as possible from the center of gravity of the impeller.

Metal shall be removed from the impeller shrouds during the balancing operation in accordance with the attached sketches until the impeller is within acceptable tolerance limit of unbalance.

POINT OF UNBALANCE

Grinding impeller for dynamic-balance

The maximum allowable unbalance at each of the two planes shall be calculated as follows:

U =4 W / N or .01 oz-in whichever is greater. U = Unbalance per plane oz-in W = Impeller weight per plane lb. Usually 1/2 the total impeller weight. N = Operational rotational speed RPM

GROUND AREA

Page 39 of 60

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

SET SCREW

IMPELLER

Grinding must not be performed in the area within 19mm (¾") of the final diameter of the impeller. Grinded area’s shall have a smooth transition to the not grinded areas and shall be polished. Minimum thickness of impeller shrouds after balancing may not be less than 80% of the nominal thickness per detail drawing.

6.8 Assembly of pump and seal

When reassembling pump, all fasteners must be tightened to the proper torque values. Refer to sectional drawing in section 8.

6.8.1 Bearing handling information

Bearings require proper handling and installation to ensure optimum performance. The following information is intended as a minimum to ensure that the bearings are handled and installed properly.

a) Do not remove new bearings from their storage

package except to inspect the bearings, when stored for a long period of time or just prior to their installation.

b) Work area must be clean to ensure that no dirt or

other contaminates will enter the bearings. Handle bearings with clean, dry hands and with clean, lint free rags. Lay bearing on clean paper and keep covered. Never expose bearings on a dirty bench or floor.

c) Do not wash a new bearing. It is already clean

and the preservative should not be removed.

d) Before mounting, be sure shaft bearings areas

are clean and free of nicks and burrs. Check the dimensions of these areas to ensure correct fit of bearings.

6.8.3 Impeller ring installation

Impellers ring setscrews can be either axial or radial through the hub.

Make sure ring fit on impeller is free of nicks and burrs. Install the set-screws in the tapered holes on the ring fits. Radial set screw shall be installed in such a way that the socket end is accessible from the inside of the impeller and the point end is just slightly below the ring fit land. It may be easier to install the radial set screw from the outside of the impeller.

Heat the new ring to 148°C. (300°F.) in convection oven to allow for uniform heating. Do not use a torch as this may cause local re-tempering of the material.

After the rings are thoroughly heated, they can be assembled on the impeller hubs. Only one of the internal edges has been machined with a lead in chamfer. Radial location is unimportant as the uniform cross-section around the circumference. Ring must fit up against the shoulder provided on hubs for proper assembly.

After cooling tighten all the set-screws with an allen wrench.

Rings were machined to final size. They do not have to be turned after assembly.

IMPELLER RING

SET SCREW

Under no circumstances are the bearings to be left exposed; they should be protected by wrapping or covered.

6.8.2 Bearing installation

a) When bearings are installed on shaft or journal

sleeve, make sure bearing is installed squarely and is firmly seated. Hold bearing in place until it has cooled sufficiently so that it will not move from position. Cover bearings to protect them from dirt.

b) When installing bearing housing onto the bearing

and shaft, the bearing housing bores and bearing outside diameter should be coated with the grease or lubricating oil to facilitate assembly.

Page 40 of 60

Typical radial screw installation for impeller rings.

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

IMPELLER

SET SCREW

IMPELLER RING

SET SCREW

Typical axial screw installation for impeller rings.

6.8.4 Rebuilding rotor

Make sure impellers are installed for proper

rotation and location. d) Install center sleeve [2450] from the opposite end

of shaft. Center sleeve is to be seated against the impeller hub installed in Step c).

e) Place casing ring [1500] on impeller front ring.

Put the case ring on the previous impeller

before assembling the next impeller. Failure to do so will require a complete dismantle of the rotor.

f) Continue to assemble remaining inboard

impellers [2200] per steps a), c) and e).

DMXDH), install crossover sleeve [2450] before assembling the first stage impeller.

In case of double suction pump (DMXD and

Before upstaging or destaging a pump (adding or removing impellers), contact Flowserve Customer Service department for instructions, to avoid permanent damage to the pump rotor.

Split rings and keys shall be pre-fitted and marked for proper location before assembling rotor. Impellers shall be marked for proper location prior to heating for assembling on rotor.

a) Install center stage impeller key [6700], into key

way in shaft and pre-fit split rings [2531] to shaft. Split rings to fit snug in groove.

b) All impeller bores and shaft outside diameters are

to be dimensionally inspected.

Impeller-to-shaft fit must be minimum of 0.0254 mm (0.001in.) to 0.0762 mm (0.003 in.) interference fit.

c) Heat the center impeller [2200] in the suction

side in oven, and assemble to shaft, moving the impeller past the split ring groove in the shaft. Quickly install split ring [2531] and pull impeller back to seat against split ring. Constant heat source is preferred to torch; torch is not recommended.

Let entire rotor cool after removing several components with heat as there may be a build-up of heat in the rotor. It's recommended that runout of shaft be checked.

g) Assemble outboard impellers [2200] per steps a),

c) and e).

h) Install throttling sleeve key [6700] to shaft and

pre-fit split rings [2531] in shaft to fit smug in groove. Heat the throttling sleeve and slide onto shaft far enough to expose split ring groove. Install split ring and pull sleeve back to seat against split ring.

6.8.5 Indicate and dynamic balance rotor

a) Place the rotor assembly on "V" blocks or rollers.

The runout of all impeller wear rings and bushings is not to exceed 0.05 mm (0.002 in.)

TIR. b) All pump rotors are to be dynamic balanced. Refer to 6.7.2 section for grinding for balance

information.

6.8.6 Installing rotor in casing

a) The seal chamber bushing [4132], throttle

bushing [1630], channel rings [1500] and center

bushing [1600] should be checked to make sure

they seat in both the upper and lower half casing

and that the anti-rotating pins [2923] can be

Page 41 of 60

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

properly located in the slot on the lower half casing parting flange.

b) Install main parting flange gasket [4590]. Refer to

parting flange gasket.

c) Place lower half of the center bushing [1600] into

the lower half casing [1210], making sure the anti-rotation pins are properly located in the slot on the lower half casing parting flange.

In case of double suction pump (DMXD and DMXDH), place lower half of the crossover bushing [1600] into the lower half casing [1210], making sure the anti-rotation pins are properly located in the slot on the lower half casing parting flange.

d) Place the lower half of all channel rings [1500] in

lower half casing, in the same sequence as they were removed, making sure the anti-rotation pins are properly located in the slot on the lower half casing parting flange.

Channel rings are precision machined as a set, after being dowelled. Be sure they are reassembled as a set.

e) Place casing rings [1500], throttle bushing [1630]

and seal chamber bushings [4132] in their proper positions on pump rotor.

f) Rig rotor [2000] to an overhead hoist. Refer to

lifting equipment section of this manual.

g) Position rotor over lower half casing and position

bushings and casing rings such that the antirotation pins are facing in the up position such that they can be easily rotated in the slot on the lower half casing parting flange.

All anti-rotation pins must be located in the slot on the lower half casing parting flange. Failure to do so could cause the pins to be bent or crushed.

h) Lower rotor into casing slowly, making sure it is

seated properly.

i) After the rotor is in pump, rotate the rings and

bushings on the rotor so that the anti-rotation pins are properly located in the slot on the lower half casing parting flange.

j) Install the upper half of center bushing [1600] and

seat taper dowel pins [6810]. Install cap-screws [6570] and tighten.

In case of double suction pump (DMXD and DMXDH), Install the upper half of crossover bushing [1600] and seat taper dowel pins [6810].

k) Install upper half of channel rings [1500] and seat

shoulder screws or dowel pins. l) Check rotor axial float as described in 6.8.8. m) Rig upper half casing [1210] to an overhead

hoist. Refer to lifting equipment section. n) Position upper half casing over lowers half and

lower carefully, making sure all rings and

bushings enter their proper fit. o) Install main parting flange dowel pins [6810] and

seat. p) Check rotor axial float and vertical lift as

described in 6.8.8 and 6.8.7. q) Install main parting flange washers [2905] and

nuts [6580] and torque to the recommended

value.

Make sure parting flange jack-screws [6570], in lower half casing, are backed out far enough so as not to protrude above parting flange machined surface.

6.8.7 Check rotor vertical lift

It is necessary to check and record the vertical lift of the rotor within the casing.

a) Place a dial indicator on the upper half casing

with the indicator tip resting on the top of the shaft. Zero the indicator.

b) Using a bar and a block of wood under the shaft,

lift the shaft and record the movement. Take measurements at both ends of the pump.

c) The minimum acceptable vertical movement is

the minimum back ring clearance on the suction end of the pump and the minimum throttling bushing clearance on the discharge end of the pump. For clearances, refer to the sectional drawings included in section 8 of this manual.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

d) If this minimum movement is not obtained, the

cause must be investigated and corrected.

6.8.8 Check rotor axial float

a) Push the rotor toward the coupling end as far as

it will go.

Do not force rotor.

Some of the rotor weight may have to be supported externally. The impeller rings contacting the channel rings are now supporting the rotor.

b) Place a piece of masking tape on the shaft (if

seal is used) or shaft sleeve (if seal chamber is used), in the seal chamber area, at the thrust end of the pump. Place a scale across the face of the seal chamber and make a line on the masking tape.

c) Push the rotor toward outboard end as far as it

will go. Using scale, mark another line on masking tape.

d) Measure and record the total rotor end float

between the two lines. The acceptable minimum end float is given on the pump sectional drawing (included in section 8). If this minimum end float is not obtained, the cause must be investigated and corrected. Two of the most likely causes could be:

• Impellers not properly seated against the split ring.

• Improperly machined part, i.e. impeller ring or channel ring.

e) Mark another line midway between the first two

lines. This centerline represents the centering of the impellers within their volutes. Masking tape is to be left on shaft for use in centralize rotor axially.

6.8.9 Horizontal and vertical shaft alignment

a) Assemble Plain Bearing:

• Rig bearing housing [3200] to casing. Install dowel pins [6810] and snug cap-screws [6570]. Install both horizontal and vertical adjusting screws [6570] in the bearing housing mounting flange. Remove dowel pins [6810].

• Wipe a film of oil on journal area of shaft. Place lower half of bearing lining on shaft. Wipe a film of oil on lower half of bearing lining. Roll lower half of bearing lining into lower half of bearing housing [3200].

b) Assemble Thrust Bearing:

• Install shim pack [3126] against shoulder of shaft. If shim pack thickness was not recorded at disassembly or if rotor was rebuilt completely, install approximately 1/16 inch of shims.

• Assemble thrust collar key [6700] and thrust collar [3610] to shaft. Fit lock nut [3713].

• Rig the lower half of bearing housing [3200] to an overhead hoist as done during disassembly. Assemble lower half of thrust bearing housing [3200] to casing. Install both the horizontal and vertical adjusting screws [6570] in bearing housing mounting flange. Remove dowel pins.

• Wipe a film of oil on journal area of shaft. Place lower half of bearing lining on shaft. Wipe a film of oil on lower half of bearing lining and roll lower half of bearing lining into lower half of bearing housing.

Bearing housings have been preset at factory and dowelled to the casing. Rotor vertical and horizontal alignment should be checked. Rotor should turn with no indication of binding. Should rotor require further adjustment, remove dowel pins [6810] and proceed with steps c), d) and e).

c) Using a dial indicator and the adjusting screws

[6570], adjust the horizontal and vertical position of the shaft inside the seal chamber to within

0.0254 mm (0.001 in.) radially.

d) Repeat step c) on thrust end, then recheck plain

end. Pump shaft should turn free with no indication of binding or rubbing. This should be taken into account when making adjustments.

e) If rubs occur, adjust the rotor upwards in

0.025 mm (0.001 in.) increments. Check alignment at both ends after each movement. After adjustment, check for rubs.

f) When vertical and horizontal alignment is

obtained, tighten bearing housing bolting-except

Page 43 of 60

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

the two top bolts at the adjusting screws. Ream the dowel holes and install dowel pins [6810]. Loosen adjusting screws and tighten the two top bearing housing bolts.

6.8.10 Centralize rotor axially

a) Pour a small amount of oil on thrust collar and

thrust shoes. Install inboard thrust bearing assembly.

b) Make sure center mark on masking tape is in line

with Seal Chamber face per Step e) of check rotor axial float instructions.

c) Install dial indicator on thrust bearing housing

[3200] so indicator contacts end of shaft. Set indicator at zero.

d) Push rotor outboard to ensure contact between

thrust bearing [3013] and bearing housing [3200].

e) Read the distance the shaft moved on the dial

indicator. This is the amount of shims [3126] to be installed between thrust collar [3610] and shoulder of shaft.

f) Remove masking tape.

6.8.11 Final bearing assembly

a) Remove inboard thrust bearing assembly. b) Roll out both lower half bearing linings [3020].

Remove both bearing housings [3200].

c) Remove thrust collar lock nut [3713] and thrust

collar [3610].

d) Install both completely assembled mechanical

seals to shaft . Insert into seal chamber. Do not tighten gland nuts [6580] or mechanical seal drive collar at this time.

e) Position inboard flingers [2540] and outboard

flingers [2540] onto shaft and place in their approximate position. Refer to pump sectional drawing in section 8 of this manual.

f) Slide inboard thrust bearing seal ring [4010] over

shaft (refer to thrust bearing drawing and instructions). Rest it on shaft in its proper position. (Refer to pump assembly drawing).

g) Install shims [3126}.

Ensure proper thickness of shims [3126] are seated against shoulder on shaft.

h) Install thrust collar key [6700], thrust collar

[3610], and lock nut [3713]. Tighten lock nut and tighten set screws in lock nut.

Before installing thrust collar [3610] onto shaft, heat the thrust collar to 104 °C (220 °F) (M AX.) in successive stages working from periphery towards centre.

i) Rig bearing housings [3200] to an overhead

hoist. Assemble bearing housings [3200] to casing. Install dowel pins [6810] and snug capscrews [6570].

When installing bearing housings to casing, ensure flingers [2540] are properly positioned with the inner part of the bearing housing. Refer to pump sectional drawing in section 8 of this manual.

j) Tighten bearing-body-to-casing screws [6570] to

the proper torque value.

Ensure dowel pins [6810] seat correctly to obtain rotor alignment.

k) Wipe a film of oil on journal area of shaft. Place

lower half of bearing lining on shaft. Wipe a film of oil on lower half of bearing lining. Roll lower half of bearing lining into lower half of bearing housing [3200].

l) Place upper half of bearing lining [3020] in

position on top of shaft.

m) Ensure bearing housings [3200] and parting-

flange surfaces are clean and free of dry “permatex”. Coat flange with new “permatex”. Assemble bearing housings [3200]. Install dowel pins [6810] and cap-screws [6570]. Tighten capscrews to the proper torque value.

n) Assemble lower half of bearing lining [3020] to

thrust bearing housing in the same manner as Step k).

o) Assemble upper half of bearing lining [3020] in

the same manner as step l).

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

p) Assemble outboard thrust bearing seal ring

[4010] to shaft and temporarily assemble support head [3830] or end cover [3266] to bearing housing. Secure two cap screws.

q) Pour a small amount of oil on thrust collar [3610]

and thrust bearing assembly. Assemble inboard and outboard thrust bearings to bearing housing.

Rotate base ring so the "keys" of base ring enter their key ways at the parting flange in the bearing housing.

r) Ensure bearing housing [3200] and parting flange

surfaces are clean and free of “permatex”. Coat flange with new “permatex”. Assemble bearing housings [3200]. Install dowel pins [6810] and cap-screws [6570]. Tighten cap-screws to proper torque value.

6.8.12 Set thrust bearing end-play

a) Remove end cover [3266] or support head [3830]

from bearing housing. If pump is equipped with a support head and shaft driven main oil pump, assemble shaft extension and "driver half" of coupling to pump shaft.

b) Place shims [3126] against outboard thrust

bearing "base ring". Assemble end cover [3266] to bearing housings. Tighten cap-screws [6570] to proper torque value.

c) Install a dial indicator on coupling end bearing

housing so the indicator contacts the end of the shaft. Push the rotor outboard (towards thrust bearing) and set indicator at zero. Push rotor inboard. Indicator should read 0.23 mm (0.009 in.) to 0.33 mm (0.013 in.). Add or remove shims [3126] to obtain the proper end-play. Coat end of bearing housings with “permatex” and reassemble end cover, torque and recheck endplay.

6.8.13 Final assembly

a) Position bearing flingers [2540] approximately

1.02 mm (0.040 in.) away from end covers and tightens the set-screws [6570].

b) If pump is equipped with shaft driven oil pump,

assemble "driver half" of coupling to oil pump. Position "coupling spider" in the driver half coupling. Assemble oil pump with its gasket to support head. Tighten nuts to proper torque value.

c) Ensure seal gland is seated properly in seal

chamber bore. Assemble washers [2905] and tighten nuts [6580] to the proper value. Tighten drive collar.

Refer to seal chamber.

d) Using a strap wrench, rotate pump shaft to be

sure rotor is properly aligned and does not bind.

Do not rotate pump shaft excessively. Internal parts depend on the liquid being pumped for lubrication.

e) Install remaining cap-screws [6570] between

bearing end cover [3266] and bearing housing [3200]. Install coupling key, pump-half coupling, coupling nut and set coupling-nut set-screws. Refer to coupling removal section.

f) Check coupling/shaft alignment as described

under shaft/coupling alignment and assemble

coupling. g) Install coupling guard. h) Replace all auxiliary piping, instrumentation and

pipe plugs. i) Refer to Pump lubricants section for lubrication

information. j) Refer to Running or operation section for starting

procedure.

6.8.14 Parting flange gasket

a) Using proper recommended 0.397 mm (1/64 in.)

thick gasket material, locate and cut stud holes,

using upper half casing as a template. b) Lay gasket on lower half casing, using either a

gasket adhesive or a band of shellac

approximately 13 mm (1/2 in.) wide on the outer

edge of lower casing. c) Place upper half casing on top of gasket and

allow time for gasket adhesive or shellac to set

up. d) Remove upper half casing. e) Using a sharp knife, cut gasket with downward

strokes only. Make sure all cuts are neat and

exact, especially on internal edges of casing. If

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

this is not done, the high-pressure liquid will bypass and erode the ring fits.

It is important that the gasket at the seal chamber be flush with the casing faces. It is necessary hang a little bit of gasket out and cut after final torque.

Do not use any hammering device to cut

gasket.

When cutting parting flange gasket, do

not forget to cut opening for discharge passage.

c) Torque the cap-nuts on the opposite corner of the

pump as indicated in below diagram, casing quadrant 4. Again, start at the center of the pump and work towards the opposite end.

d) Torque the cap-nuts in below diagram, casing

quadrant 5 in a similar manner.

e) Torque the cap-nuts in below diagram, casing

quadrant 6 in a similar manner.

f) Repeat the same sequence two or more times

using increasing torque values with each full pass.

DISCHARGE PASSAGE

Position of the Parting Flange Gasket

6.8.15 Parting flange torque procedure

Assemble upper half casing to lower half casing and secure with washers and cap-nuts listed on the parts list of the casing. Torque the cap-nuts in three or more complete passes of increasing torque values until the torque values in 6.5.1 are achieved.

Minimum recommended torque passes: First pass - 50% specified torque value Second pass- 90% specified torque value Final pass - 100% specified torque value

Tighten the cap-nuts in the following sequence during each pass:

a) Torque both center cap-nuts – marked O. b) Torque the cap-nuts shown in below diagram,

casing quadrant 3. Start approximately in the center of the pump and proceed towards the suction nozzle.

Parting flange torque procedure diagram

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

⇓⇓⇓⇓

PROBABLE CAUSES

POSSIBLE REMEDIES

A. SYSTEM TROUBLES

B. MECHANICAL TROUBLES

7 FAULTS; CAUSES AND REMEDIES

FAULT SYMPTOM Pump overheats and seizes

Bearings have short life

⇓⇓⇓⇓

Pump vibrates or is noisy

⇓⇓⇓⇓

Mechanical seal has short life

⇓⇓⇓⇓

Mechanical seal leaks excessively

⇓⇓⇓⇓



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

⇓⇓⇓⇓

Pump requires excessive power

⇓⇓⇓⇓

Pump loses prime after starting

⇓⇓⇓⇓

Insufficient pressure developed

⇓⇓⇓⇓

Insufficient capacity delivered

⇓⇓⇓⇓

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  

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  

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

  



Pump does not deliver liquid

⇓⇓⇓⇓



Pump not primed. Check complete filling. Vent and/or prime.



Pump or suction pipe not completely filled with liquid.

Suction lift too high or level too low. Insufficient margin between suction pressure

and vapor pressure. Excessive amount of air or gas in liquid. Check and purge pipes and system. Air or vapor pocket in suction line. Check suction line design for vapor pockets Air leaks into suction line. Check suction pipe is airtight. Air leaks into pump through mechanical seal,

sleeve joints, casing joint or pipe plugs. Inlet of suction pipe insufficiently submerged. Check out system design

Speed too low. CONSULT FLOWSERVE. Speed too high. CONSULT FLOWSERVE. Total head of system higher than differential

head of pump. Total head of system lower than pump design

head. Specific gravity of liquid different from design. Check and CONSULT FLOWSERVE. Viscosity of liquid differs from that for which

designed. Operation at very low capacity. Measure value and check minimum permitted.

Operation at high capacity. Measure value and check maximum permitted.

Suction pressure too low, Foreign material in suction line.

Misalignment due to pipe strain.

Misalignment due to improper pump/driver setup.

Improperly designed foundation.

Check NPSHa>NPSHr, proper submergence, losses at strainers and fittings

Check and replace faulty parts. CONSULT FLOWSERVE.

Check system losses. Remedy or CONSULT FLOWSERVE.

Remedy or CONSULT FLOWSERVE.

Remedy or CONSULT FLOWSERVE. Open suction valve, Check power supply to correct voltage,

Dismantle suction line remove foreign material.

Check the flange connections and eliminate strains using elastic couplings or a method permitted

Check alignment and correct as necessary.

Check setting of baseplate: tighten, adjust, grout base as required.

Page 47 of 60

⇓⇓⇓⇓

PROBABLE CAUSES

POSSIBLE REMEDIES

C. ELECTRICAL TROUBLES

FAULT SYMPTOM Pump overheats and seizes

Bearings have short life

⇓⇓⇓⇓

Pump vibrates or is noisy

⇓⇓⇓⇓

Mechanical seal has short life

⇓⇓⇓⇓

Mechanical seal leaks excessively

⇓⇓⇓⇓



  

    

 

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

 





Pump requires excessive power

Pump loses prime after starting

⇓⇓⇓⇓

Insufficient pressure developed

⇓⇓⇓⇓

Insufficient capacity delivered

⇓⇓⇓⇓







 



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





DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

Pump does not deliver liquid

⇓⇓⇓⇓

Shaft bent (excessive runout) Check shaft runouts are within acceptable values.

CONSULT FLOWSERVE.

Rotating part rubbing on stationary part internally.

Bearings worn Replace bearings. Wearing ring surfaces worn. Replace worn wear ring/ surfaces Impeller damaged or eroded.

Leakage under sleeve due to joint failure. Replace joint and check for damage Shaft sleeve worn or scored or running off

center. Mechanical seal improperly installed.

Shaft running off centre because of worn bearings or misalignment.

Impeller out of balance resulting in vibration. Check and CONSULT FLOWSERVE Abrasive solids in liquid pumped. Mechanical seal was run dry.

Excessive thrust caused by a mechanical failure inside the pump.

Lack of lubrication for bearings.

Improper installation of bearings (damage during assembly, incorrect assembly, wrong type of bearing etc).

Damaged bearings due to contamination.

Rotating assembly out of balance. Check balance, runouts, balance as required.

Coupling out of balance Check for missing parts or damage.

Cavitation Check pump is primed, check for obstruction in suction line.

Wrong direction of rotation. Reverse 2 phases on motor terminal box. Motor running on 2 phases only. Check supply and fuses. Motor running too slow. Check motor terminal box connections and voltage.

Check and CONSULT FLOWSERVE, if necessary

Replace or CONSULT FLOWSERVE for improved material selection.

Check and replace defective parts.

Check alignment of faces or damaged parts and assembly method used. Refer to mechanical seal instructions.

Check misalignment and correct if necessary. If alignment satisfactory check bearings for excessive wear.

Check mechanical seal condition and source of dry running and repair.

Check wear condition of Impeller, its clearances and liquid passages.

Check hours run since last change of lubricant. Check oil level and add if necessary.

Check method of assembly, possible damage or state of cleanliness during assembly and type of bearing used. Remedy or CONSULT FLOWSERVE, if necessary.

Check contamination source and replace damaged bearings

CONSULT FLOWSERVE.

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8 PARTS LIST AND DRAWINGS

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

9 CERTIFICATION

Certificates determined from the Contract requirements are provided with these instructions where applicable. Examples are certificates for CE marking, ATEX marking etc. If required, copies of other certificates sent separately to the Purchaser should be obtained from the Purchaser for retention with these User Instructions.

10 OTHER RELEVANT

DOCUMENTATION AND MANUALS

10.1 Supplementary user instruction

manuals

Supplementary instruction determined from the contract requirements for inclusion into User Instructions such as for a driver, instrumentation, controller, sub-driver, seals, sealant system, mounting component etc. are included under this section. If further copies of these are required they should be obtained from the purchaser for retention with these User Instructions.

Where any pre-printed set of User Instructions are used, and satisfactory quality can be maintained only by avoiding copying these, they are included at the end of these User Instructions such as within a standard clear polymer software protection envelope.

10.2 Change notes

If any changes, agreed with Flowserve, are made to the product after its supply, a record of the details should be maintained with these User Instructions.

10.3 Additional sources of information

Reference 1:

NPSH for Rotordynamic Pumps: a reference guide, Europump Guide No. 1, Europump & World Pumps, Elsevier Science, United Kingdom, 1999.

Reference 2:

Pumping Manual, 9th edition, T.C. Dickenson, Elsevier Advanced Technology, United Kingdom,

1995. Reference 3:

Pump Handbook, 2nd edition, Igor J. Karassik et al, McGraw-Hill Inc., New York, 1993.

Reference 4:

ANSI/HI 1.1-1.5 Centrifugal Pumps - Nomenclature, Definitions, Application and Operation.

Reference 5:

ANSI B31.3 - Process Piping.

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

10.4 Customer Data Sheet

10.4.1 Order information

Purchaser:

Location:

Flowserve order:

Serial numbers:

10.4.2 Technical information

Pump application:

Liquid pumped:

Specific gravity:

Pump size and Type:

Driver:

Pump rating:

Net Positive Suction Head Required:

Net Positive Suction Head Available:

Total Head:

Suction pressure:

Discharge pressure:

Minimum flow:

Pump efficiency at design:

Brake Horse Power (design/max) with pumped liquid:

Pump rotation from coupling end:

Hydrotest pressure:

Maximum temperature:

Bearing lubrication:

Pump hold-down bolt torque value:

10.4.3 Weights

Pump weight:

Driver weight:

Baseplate weight:

Total weight:

Page 56 of 60

NOTES:

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

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NOTES:

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

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NOTES:

DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

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DMX/DMXD/DMXH/DMXDH USER INSTRUCTIONS ENGLISH 85392728 - 10/09

Your Flowserve factory contacts:

Flowserve Corporation Parallelweg 6 4878 AH Etten-Leur, The Netherlands Telephone: +31 76 502 8200

Flowserve Spain, S.A. Poligono Industrial Avda. Fuentemar, 26-28 E28823 Coslada (Madrid), Spain Telephone: +34 91 660 4600

Flowserve S.A. Chuquisaca 302 5547 Godoy Cruz Mendoza, Argentina Telephone: +54 261 405 3100

Flowserve Corporation 2300 East Vernon Avenue Vernon, CA, USA 90058 Telephone: +1 323 587 6171

Your local Flowserve representative:

To find your local Flowserve representative please use the Sales Support Locator System found at www.flowserve.com

FLOWSERVE REGIONAL SALES OFFICES:

USA and Canada

Flowserve Corporation 5215 North O’Connor Blvd., Suite 2300 Irving, Texas 75039-5421 USA Telephone 1 972 443 6500 Fax 1 972 443 6800

Europe, Middle East, Africa

Worthing S.P.A. Flowserve Corporation Via Rossini 90/92 20033 Desio (Milan) Italy Telephone 39 0362 6121 Fax 39 0362 303396

Latin America and Caribbean

Flowserve Corporation 6840 Wynnwood Lane Houston, Texas 77008 USA Telephone 1 713 803 4434 Fax 1 713 803 4497

Asia Pacific

Flowserve Pte. Ltd 10 Tuas Loop Singapore 637345 Telephone 65 6771 0600 Fax 65 6779 4607

Flowserve DMX User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual