Flowserve PVML 25.04.04, User Instructions

Page 1: ...OPERATION MAINTENANCE PCN 00079591 ed 01 05 E These instructions should be read prior to installing operating using and maintaining this equipment Компания ПромХимТех официальный дистрибьютор насосов Flowserve www promhimtech ru Тел 8 800 250 01 54 e mail zakaz promhimtech ru ...

Page 2: ...e items 19 6 4 Tools required 19 6 5 Fastener torques 20 6 6 Setting impeller clearances 20 6 7 Disassembly 20 6 8 Examination of parts 21 6 9 Assembly 22 PAGE 7 FAULTS CAUSES AND REMEDIES 25 8 PARTS LIST AND DRAWINGS 27 8 1 Sectional drawings PVML 27 8 2 Parts list PVML 27 8 3 General arrangement drawing 28 9 CERTIFICATION 28 10 OTHER RELEVANT DOCUMENTATION AND MANUALS 28 10 1 Supplementary User ...

Page 3: ...ment 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 Pump Division to provide sound and all necessary i...

Page 4: ...xplosive atmospheres section 1 6 4 also applies NEVER DO MAINTENANCE WORK WHEN THE UNIT IS CONNECTED TO POWER GUARDS MUST NOT BE REMOVED WHILE THE PUMP IS OPERATIONAL DRAIN THE PUMP AND ISOLATE PIPEWORK BEFORE DISMANTLING THE PUMP The appropriate safety precautions should be taken where the pumped liquids are hazardous FLUORO ELASTOMERS When fitted When a pump has experienced temperatures over 250...

Page 5: ... 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 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 which is quite unusual for a PVML pump...

Page 6: ... 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 the fitting of...

Page 7: ...king or adversely affect the ambient conditions Where there is a risk from such tools or materials maintenance must be conducted in a safe area It is recommended that a maintenance plan and schedule is adopted See section 6 Maintenance 1 7 Nameplate and warning labels 1 7 1 Nameplate For details of nameplate see the Declaration of Conformity 1 7 2 Warning labels Page 7 of 29 ...

Page 8: ...o be encountered They represent sound pressure levels at 1 m 3 3 ft from the directly driven pump for free field over a reflecting plane If a pump unit only has been purchased for fitting with your own driver then the pump only noise levels from the table should be combined with the level for the driver obtained from the supplier If the motor is driven by an inverter it may show an increase in noi...

Page 9: ...pendent on their size and construction 2 3 Lifting To avoid distortion the pump unit should be lifted as shown Typical lifting of a PVML with base plate or extended levelling plate Unsafe lifting is never allowed 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 recorde...

Page 10: ...t design and has a keyed drive end 3 3 6 Stuffing box The stuffing box has a spigot rabbet fit between the pump casing and seal plate for optimum concentricity The design enables a number of sealing options to be fitted 3 3 7 Shaft seal The mechanical seal s attached to the pump shaft seals the pumped liquid from the environment Gland packing may be fitted as an option for non hazardous service on...

Page 11: ...al alignment Concrete is the most suitable material for the base The base should contain recesses for the grouting of the foundation bolts Figure 3 shows a number of variations on the design of the foundation bolts Make these recesses in the base in accordance with the above figure referring to the dimensional drawing of the pump unit If a concrete base is used observe the following points do not ...

Page 12: ...his is not possible along the seal plate If the mechanical seal is fitted with a guard this should be removed level the levelling plate in the direction P Q with an accuracy of 0 15 µm m 0 002 in ft using the adjusting bolts see Figure 5 Fill the space between the filler blocks and the levelling plate with thin filler plates level the levelling plate in the directions R S with an accuracy of 0 15 ...

Page 13: ...wo sizes larger than the pump suction and discharge Typically main pipework velocities should not exceed 2 m s 6 ft sec suction and 3 m s 9 ft sec on the discharge Take into account the available NPSH which must be higher than the required NPSH of the pump Never use the pump as a support for piping Maximum forces and moments allowed on the pump flanges vary with the pump size and type To minimize ...

Page 14: ...mpatible liquid supply to the gland at 1 5 2 0 bar 20 30 psi above suction pressure is recommended 4 6 5 3 Pumps fitted with mechanical seals Single seals requiring re circulation will normally be provided with the auxiliary piping from pump casing already fitted If the seal requires an auxiliary quench then a connection must be made to a suitable source of liquid flow low pressure steam or static...

Page 15: ...is installed To prevent excessive surface temperatures at bearings it is recommended that temperature or vibration monitoring are carried out See sections 5 7 4 and 5 7 5 5 COMMISSIONING START UP OPERATION AND SHUTDOWN These operations must be carried out by fully qualified personnel 5 1 Pre commissioning procedure BEFORE START UP REMOVE TEMPORARY RUBBER GASKET ABOVE SEAL DRIVE COLLAR GASKET CAN B...

Page 16: ...iquids are being pumped it may be necessary to slacken the gland nuts to achieve leakage The pump should be run for 30 minutes with steady leakage and the gland nuts tightened by 10 degrees at a time until leakage is reduced to an acceptable level normally a minimum of 120 drops per minute is required Bedding in of the packing may take another 30 minutes Care must be taken when adjusting the gland...

Page 17: ...doubt contact your nearest Flowserve office 5 10 1 Specific gravity SG Pump capacity and total head in metres feet do not change with SG however pressure displayed on a pressure gauge is directly proportional to SG Power absorbed is also directly proportional to SG It is therefore important to check that any change in SG will not overload the pump driver or over pressurize the pump 5 10 2 Viscosit...

Page 18: ...rbon tetrachloride Protect yourself against toxic fumes when using cleaning agents 6 1 Maintenance schedule It is recommended that a maintenance plan and schedule is adopted in line with these User Instructions It should include the following a Any auxiliary systems installed must be monitored if necessary to ensure they function correctly b Gland packings if applied instead of a mechanical seal m...

Page 19: ...are shown on the pump nameplate To ensure continued satisfactory operation replacement parts to the original design specification should be obtained from Flowserve Any change to the original design specification modification or use of a non standard part will invalidate the pump s safety certification 6 2 2 Storage of spares Spares should be stored in a clean dry area away from vibration Inspectio...

Page 20: ... between the diffuser and the pump casing remove the packing ring 4590 2 from the pump casing and dispose of this in the proper way This type of packing may only be used once 6 7 2 Removing the diffuser This procedure describes removal of the diffuser from the casing cover Bend open the lock washers 6541 and remove the hexagon head bolts 6577 1 from the diffuser Remove the diffuser 6 7 2 Removing ...

Page 21: ...se wearing ring Take a drill with a slightly smaller diameter than the width of the case wearing ring Drill two holes along the centre line of the upright edge of the case wearing ring see Figure Drill both holes not deeper than the measured height of the case wearing ring Chip off the remaining edges of the drilled holes using a hammer and chisel see Figure Make sure that the centring rim is not ...

Page 22: ...ng the impeller wearing rings The procedure specified below is to be followed with regard to the impeller wearing rings 2300 1 2 on one or both sides of the impeller Clean the mounting surfaces of the impeller wearing ring and the impeller Use the appropriate personal protection equipment when heating and positio ning the impeller wearing ring Heat the impeller wearing ring to a temperature of 120...

Page 23: ... the thrower and the electric motor 6 9 6 Fitting the motor stool This procedure describes assembly of the motor stool to the casing cover Clean the mounting surfaces of the motor stool and the casing cover Carefully place the shaft of the electric motor in the shaft sleeve so that the motor stool is resting Tighten the bolts 6577 2 6 9 7 Fitting the impeller This procedure describes assembly of t...

Page 24: ...propriate lifting points Observe the lifting instructions described in section 2 3 The lifting lugs fixed to the motor are sufficient to lift the motor but are not suitable to lift the total unit Lift the casing cover above the pump casing and make sure that the casing cover is in the correct position in relation to the pump casing There is only one way for the casing cover to fit onto the pump ca...

Page 25: ...d replace faulty parts CONSULT FLOWSERVE Foot valve too small Investigate replacing the foot valve Foot valve partially clogged Clean foot valve 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 Check syste...

Page 26: ... solids in liquid pumped Internal misalignment of parts preventing seal ring and seat from mating properly Check and CONSULT FLOWSERVE Mechanical seal was run dry Check mechanical seal condition and source of dry running and repair Internal misalignment due to improper repairs causing impeller to rub Check method of assembly possible damage or state of cleanliness during assembly Remedy or CONSULT...

Page 27: ...ng 2300 2 Impeller wearing ring 2430 Throttling sleeve Stub sleeve 2540 Thrower 2913 Impeller screw 3160 Motor stool 4132 Neck bush 4590 2 Gasket 4590 3 Gasket 4590 4 Gasket Ref no Description 4610 O ring 6130 Sole plate 6541 Lock washer 6562 Protective guard 6570 1 Screw 6570 2 Screw 6570 3 Screw 6572 1 Stud continuous 6572 2 Stud continuous 6577 1 Hexagon head bolt 6577 2 Hexagon head bolt 6577 ...

Page 28: ...mentary instructions such as for a driver instrumentation controller seals sealant system etc are provided as separate documents in their original format If further copies of these are required they should be obtained from the supplier for retention with these User Instructions 10 2 Change notes If any changes agreed with Flowserve Pump Division are made to the product after its supply a record of...

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