manualshive.com logo in svg

Vogt 100/75 HAD, Руководство по обслуживанию, Страница: 31 / 36

Поделиться
Скачать
Vogt 100/75 HAD Скачать руководство пользователя страница 31

31

Useful Tips 

Useful

 Tips 

for trouble-free operation

15

.1

 Flow Rate is Insufficient

15

.2 

Discharge Pressure is Insufficient

9.-  Pump sealing defective.

Possible Causes

Solutions

· Check and complete the filling of the system with

liquid.
· Check the delivery geometric height.

· Check pressure losses in the delivery pipe

(partially closed valve, foreign bodies, back

pressure too low).

2.-  The discharge head is too high (higher than that 

for which the pump was selected).

1.-  The pump is not primed.

3.-  The suction lift is too high (insufficient 

NPSH).

· Check that NPSHavailable > NPSHrequired

· Check suction geometric head.

· Check for head losses in the suction line (partially

closed valve, foreign bodies, back pressure too

low).

4.- The impeller ducts are partially clogged.

5.- Discharge head other than specified.

· Check and release blockage.

· Re-calculate manometric height of the new system.

6.-  Air enters the suction pipe.

· Check and repair damaged ducts and

defective joints.

7.-  Damaged internal mechanical pump adjustments.

· Consider a pump repair.

8.-  The foot valve or pipe is not sufficiently 

submerged.

· Check and submerge as necessary.

· Check and replace all pump sealing parts such as
O'rings, mechanical seals or gaskets.

3.-  Damaged internal mechanical pump adjustments.

Possible Causes

Solutions

2- Air enters the suction pipe.

· Check and repair damaged ducts and

defective joints.

· Consider a pump repair.

4- The viscosity of the liquid is higher than initially

expected.

· Check and consult the

manufacturer.

1- Flow rate different from that specified.

· Re-calculate system flow requirements.

Содержание 100/75 HAD

Страница 1: ......

Страница 2: ...o provide the necessary information for installation maintenance and start up of the VOGT HAD Series pumps In order to increase the productivity of the equipment it is recommended to carefully follow the instructions below Store equipment indoors and cover flanges from contact with the environment Apply rust preventative coating to ground areas and rotate shaft on average once a month Kendall Seal...

Страница 3: ...mp while it is running Never place objects or items of any kind on the motor or pump as this may create a fire hazard The pump should not be operated at low or near zero flow conditions as this may cause vaporization of the pumped liquid the high pressure generated may cause accidents to personnel and damage to equipment Slurry pumps should not be operated at a flow rate less than 25 of BEP Best E...

Страница 4: ...respective approval and authorization of VOGT S A Check belt tension before starting up the equipment Prime pump before operating to avoid solid particles settling on start up and causing equipment jamming Do not pump very hot liquid into a cold pump or very cold liquid into a hot pump The sudden change in temperature will damage internal components and cause the pump casing to rupture Use care wh...

Страница 5: ...AD Inlet diameter of 40 mm Discharge diameter of 25 mm 2 bearing holder size HAD VOGT HAD Series pump with interchangeable liners A Suction diameter is expressed in millimeters e g 40 50 75 100 etc B Discharge diameter is also expressed in millimeters such as 25 40 50 75 etc C The pump bearing carrier consists of a casing and bearing assembly The size of the casing is identified between one and fo...

Страница 6: ...bolts if necessary 4 2 Foundations The foundation supporting the pump motor assembly must be able to withstand vibrations of both the pump and the motor and should be as close as possible to the source of the fluid to be conveyed The motor pump assembly should be supported on a generously sized foundation This foundation must be completely flat smooth and level The unit shall be tied to this found...

Страница 7: ...ing should be as short as possible and have few bends The pipe diameter should be calculated for the minimum slurry velocity thereby reducing head losses but keeping the velocity above the settling velocity of the solid particles When the diameter of the suction pipe is larger than that of the pump flange a reduction should be used whose shape avoids the formation of air bubbles that then enter th...

Страница 8: ...aft wrench to rotate the shaft manually in the direction indicated on the pump housing 5 3 Motor Rotation Control With the motor and pump uncoupled check that the pump rotates freely in the direction indicated on the pump casing otherwise the impeller could unscrew causing serious accidents 5 4 Pump Start The bearing carrier is supplied with an initial grease charge from the factory therefore no a...

Страница 9: ...ve the chance of the bearings surviving the initial storage period WARNING Do not add grease during start up and initial operation Check belt tension Run the pump at the active operating point According to the graph in figure 2 the temperature should not exceed a pick of 105 C then wait approximately 4 hours to cool it down and test it again The pick should go down until it stabilizes If the assem...

Страница 10: ...ry low and causes smoke or steam the pump should be stopped and its installation checked Abnormal start up If the pump does not prime it may be due to one or more of the following causes Pulp accumulation in the suction pipe Air entering the packing press Impeller blockage by oversize or oversize solid material clogging Blockage in the discharge duct either by oversize particles flow velocity less...

Страница 11: ...enance 6 1 Impeller Adjustment As mentioned above pump efficiency and component wear rate vary as a function of the GAP between the impeller and the pump Accordingly the pump should have a GAP between 1 and 2 mm to achieve the best performance For a pump with centrifugal seal it is recommended to double this difference so as not to increase the seal area pressure 6 2 Bearing Lubrication For reliab...

Страница 12: ...ting conditions include Clean environment Pumps covered or protected from the weather rain snow ice dust etc Normal ambient temperatures 0 35 C Properly installed stuffing box Figure 3 Lubrication points for bearing carrier Table 4 Recommended amount of grease for initial use in each bearing Pump Maintenance ...

Страница 13: ...earing assemblies should operate partially submerged Sealing at both ends is by lip seals and piston rings Figure 4 Lubrication level The labyrinth seals at both ends should be lubricated with grease providing additional security for extended lip seal bearing life Grease purge labyrinth The labyrinth grease purge is used to prevent contaminants from entering the bearing assembly thereby prolonging...

Страница 14: ...e purging particularly at the wet end of the bearing assembly replace the standard labyrinth grease purge nipple with an automatic grease feeder system three month capacity on smaller bearings and one month capacity on larger ones In this case check at regular intervals that it is not completely discharged 6 5 Oil service intervals and quantities This section contains information on service interv...

Страница 15: ...rge grease from the labyrinth Table 8 Grease Specifications Labyrinth Seals For general applications Mobil HP or equivalent When water splashing is likely Shell Calinthia T or equivalent Pump Maintenance Pump Maintenance 6 6 Recommended Lubricants ...

Страница 16: ...such as impellers and liners varies with the pump and installation If the pump performance drops the replacement of wear components or adjustment of the impeller setting should be evaluated depending on their condition It is recommended to measure wear parts from time to time at the beginning in order to develop a maintenance plan 7 1 1 Bearing Assemblies Up to Size 6 This section contains informa...

Страница 17: ...ng fluid to remove all moisture Apply oil or light grease to the inside diameter of each end of the BEARING COVER Press the bearing holder cap onto one end of the bearing holder until it is just below the face of the end of the cover Figure 6 Placing the impeller end bearing holder cover on the impeller housing Figure 7 Positioning of the shaft in the bearing holder cover Parts and Assembly 7 2 Lu...

Страница 18: ...ring housing tap with a mallet lightly and evenly Place the cover on the housing and screw the bolts on it The shaft should barely rotate and there should be practically no axial play 7 5 Separation Measurement Drive Side Measure the gap between the bearing housing cover and the housing for installation of the gaskets Once installed close the assembly and tighten the cover bolts securely again 7 6...

Страница 19: ...s have been tightened properly it is necessary to measure the actual axial play in the bearing carrier Table 8 Axial set specifications Figure 8 Assembly of labyrinths piston rings and bearing seals Figure 9 Measurement of axial clearance Parts and Assembly 7 7 Axial clearance check Parts and Assembly ...

Страница 20: ...on add a mounting bracket with a dial indicator secured to the cover as shown in figure 9 Rotate the shaft and record the maximum and minimum 7 9 Larger Sizes 6 18 19 2021 2122 Position the bearing holder vertically as shown in figure 10 and repeat the process above leaving the pump side shaft upwards Parts and Assembly ...

Страница 21: ...ase of impurities clean with emery cloth and apply light grease 2 Preheating of the bearings in the internal diameter not more than 120 C 3 With the shaft vertical and pump side up install a bearing cone with the largest diameter against the shaft shoulder 4 Install the tapered bearing spacer and push it against the smaller diameter of the previously installed bearing 5 Install the second bearing ...

Страница 22: ...e of the bearing housing and place it on a base with a shaft well or wooden blocks to allow the shaft to enter until the top cover is closed 2 Lift shaft out of threaded bore in shaft with an eyebolt 3 Lightly tap the bearing until it rests against the edge of the bearing housing cover 4 Lightly grease the inside surfaces of the cover 5 Position the cover and tighten it evenly Figure 12 Positionin...

Страница 23: ...e bearing carrier Place two nuts with their respective flat washers between them and leave them loose 2 Place CONJUNTO on the base in an aligned manner Important confirm that the adjusting lug is fitted on the adjusting bolt 3 Tighten the box to the base with its respective glands Tighten thoroughly 4 Grease the shaft on the pump side to improve the conditions in the assembly of the components Ass...

Страница 24: ...e 14 Place nuts and tighten to torque value in Table 9 For rubber lined pumps only insert COVER PLATE BOLTS into frame plate bosses place nuts and tighten securely Figure 14 Placement of the casing on the press side Table 9 Stud bolt torque table Housing Assembly Instructions the Bearing Holder Base 9 2 Placement of Press Side Housing and Fastening Bolts Assembly Instructions the Bearing Holder Ba...

Страница 25: ...f the water line 4 Leave system loose awaiting installation of press housing 5 Once the system is installed with the casing in place insert the lantern ring and the respective gaskets according to figure 15 6 Apply anti seize lubricant to the shaft threads Figure 15 Placement of stuffing box lantern ring packing shaft sleeve spacer ring and shaft sleeve O ring Gland Packing Seal Assembly 10 1 Inst...

Страница 26: ...pending installation of press housing 4 Once the system is installed with the casing in place install the O ring between the expeller and the press disk 5 Once the press disk is installed insert the lantern ring and the respective gaskets according to figure 16 6 Apply plenty of anti seize lubricant on the shaft thread Figure 16 Fitting of stuffing box lantern ring packing shaft sleeve expeller ej...

Страница 27: ...ner Assembly Instructions Table 10 below lists the recommended torque values for CASING THREADS These values should be followed on all pumps but are extremely important on metal lined pumps Table 10 Torque table Pump Liner Assembly Instructions Uncoupling Necklace 12 1Decoupling Necklace Installation The uncoupling collar allows the impeller to be released this design does not require complete dis...

Страница 28: ...n lift impeller and position it to the shaft Screw the impeller in this position by turning the shaft from the drive side with a wrench keeping the impeller fixed 4 In horizontal position assemble suction side casing in the same way as the press side and close the pump by tightening the casing tightening bolts Figure 17 Lining and press housing assembly Figure 18 Assembly of impeller suction disk ...

Страница 29: ... 20 between impeller and suction side of between 1 and 2 mm should be left The following steps are described for this purpose Confirm that the Adjusting Bolt Nuts do not impede the movement of the bearing carrier assembly Confirm that the Tie Bolt Nuts are loose Rotate the shaft clockwise Using the Adjusting Nut move the Impeller forward This is towards the Suction Disc Move forward until the Impe...

Страница 30: ...It is recommended to review the assembly procedures before starting To easily unscrew the impeller the decoupling collar must first be removed larger sizes only UNDER NO CIRCUMSTANCES SHOULD HEAT BE USED TO EXPAND OR CUT AN IMPELLER FROM THE SHAFT AN EXPLOSION COULD CAUSE PERSONAL INJURY WARNING Table 11 Torque table for bearing stud bolts Impeller Adjustment 14 1 Pump Disassembly ...

Страница 31: ...n bodies back pressure too low 4 The impeller ducts are partially clogged 5 Discharge head other than specified Check and release blockage Re calculate manometric height of the new system 6 Air enters the suction pipe Check and repair damaged ducts and defective joints 7 Damaged internal mechanical pump adjustments Consider a pump repair 8 The foot valve or pipe is not sufficiently submerged Check...

Страница 32: ... insufficient NPSH Check that NPSHavailable NPSHrequired Check suction geometric head Check for head losses in the suction line partially closed valve foreign bodies back pressure too low 4 The impeller is partially clogged causing unbalance Check for and clear blockages Check that no damage has occurred to the bearings 5 There are mechanical problems such as bent shaft seized parts Check and cons...

Страница 33: ...vice is the only one authorized to intervene in equipment within the warranty period If the pump does not work properly DO NOT disassemble it look for the fault in the installation All VOGT equipment has been satisfactorily tested at the factory The details of the pumping equipment warranty such as conditions of validity equipment identification and terms of coverage are specified and detailed in ...

Страница 34: ... Hydraulic analyses and installations Reverse engineering Retrieval and manufacturing of centrifuge pump components Casting and manufacturing of parts in different metalworking facilities ln Site Repairs Assessment and diagnosis Modifications and improvements of rotary equipment Pump Assembly Field Assistance operation control and in site installations per man hours Multi Equipment Post Sale Servi...

Страница 35: ...y located in strategic areas Each one of them is equipped with a multidisciplinary work team trained to propose efficient solutions to the real needs of our clients and to be attentive to solve in an agile way the imponderables that the industrial processes present At present we have an Industry 4 0 plan with solutions focused on two key pillars which are energy efficiency and displacement of foss...

Страница 36: ...Salado 0851 Quilicura vogt vogt cl LATAM COMMERCIAL OFFICE 54 9 3874 58 1822 argentina vogt cl COMMERCIAL OFFICE IQUIQUE 56 55 245 6600 56 9 6229 4764 iquique vogt cl COPIAPÓ BRANCH 56 52 2210 954 Panamericana Norte 3604 Local 3 Bodega 3 copiapo vogt cl SOUTH AREA BRANCH 56 65 2438 761 Achao 618 puerto montt vogt cl ...

Отзывы:

Нет отзывов