Vogt MD Series Service Manual
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Vogt MD Series Service Manual

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Summary of Contents for Vogt MD Series

  • Page 2 The design, materials, and workmanship incorporated in the construction of VOGT pumps allow for a long, trouble-free service life. The life and satisfactory performance of VOGT pumping equipment, in any case depends on a correct application, installation and also on a periodic inspection and careful maintenance.

  • Page 3: Safety Instructions

    Safety Instructions 2.1 Definitions WARNING Indicates a procedure, operation, etc., with a strong possibility of severe personal injury, loss of life or irreparable damage to equipment, if not performed properly. CAUTION Indicates a procedure, operation, etc., with a strong possibility of severe damage to the pumping equipment, if not performed properly.

  • Page 4: Qualification And Training Of Operating Personnel

    2.4 Risks due to non-compliance with Safety Instructions VOGT S.A. declines all responsibility that may arise from not respecting the safety standards in force at any time, during the handling, installation or operation of its equipment.

  • Page 5: Equipment Description

    Equipment Description 3.1 Pumping Equipment 1. Discharge Flange 8.- Lifting Eyebolt of Pumping Equipment 15.- Pump Body Leg 2. Pump Lifting Eyebolt 9.- Motor Terminal Box 16.- Pump Body 3. Oil Filling and Aeration Plug 10.- Pumping Equipment Base 17.- Suction Flange 4.
  • Page 6 Equipment Description 3.3 Centrifugal Pump 3.3.1 Sectional Section Pump series MD-MDE Figure 3 - MD-MDE Series Sectional...
  • Page 7 Equipment Description Figure 4 - Bearing Body Sectional 3.3.2 MD-MDE Series Centrifugal Pump Parts and Pieces Description Table 1 : Description of parts and pieces MD-MDE Series Denomination Item Denomination Item 25.03 Suction Side Bearing Body Cover Bolt Impeller Pump Body 25.04 Leg Fixing Bolt Bearing Body Union Body...
  • Page 8 Equipment Description 3.3.3 HDE Series Sectional Cutting DETAIL Z / 2:1 DETAIL X / 1.5:1 DETAIL Y / 1.5:1 Figure 5 - Sectional HDE Series...
  • Page 9 Equipment Description 3.3.4 Description of HDE Series Centrifugal Pump Parts & Pieces Table 2 : Description of parts and components HDE Series Denomination Item Denomination Item Pump Body Drain Plug Pump Body Impeller Manometer Connection Plug Pump Body Cover Drain Plug Bearing Body Mechanical seal Union Body Body Bearing...
  • Page 10 Equipment Description 3.3.5 MD-MDE Series Pump Dimensions Figure 6 - Dimensions Characteristics Table 3 Dimensions MD-MDE Series Dimensions in Millimeters Flanges Pump Legs Axis Seal Bearings h1 h2 Ø Ø Imp. MD610 112 163 222 170 50 100 MD614 240 190 MDE620 110 14 1 ½...

  • Page 11: Transportation, Storage And Handling

    VOGT. to indicate the weight. For the manipulation, the equipments that require it have appropriate eyebolts on the bench.

  • Page 12: After Storage

    Transportation, Storage and Handling 4.3.2 After Storage • Remove the temporary protections and visually check the condition of all the elements. • If the pump has been stored and/or stopped for a long period of time (more than 6 months) it is necessary: o Renew the lubrication of bearings.

  • Page 13: Installation

    • The design of piping systems, anchorages and other areas of the installation is not the responsibility of VOGT S.A. • VOGT S.A. only offers the data and comments as an aid, but cannot assume responsibility for the design, assembly and operation of an installation.

  • Page 14: Anchor Bolts

    5.4 Anchor Bolts VOGT S.A. supplies the pumping equipment with bases, these must be anchored to the foundation by means of anchor bolts, as shown in figure 7 and applying the tightening torque according to table Nº 4.
  • Page 15 Installation 5.5 Joints to Rigid Pipe System CAUTION For optimum operation of the motor-pump equipment, the piping should not exert stresses on the equipment. The equipment can be deformed, broken or misaligned, when the piping is not aligned with the axes corresponding to the suction and discharge of the pump.
  • Page 16 Installation If a reduction is installed in the suction line, it must be eccentric and its straight part must be at the top, to facilitate the exit of trapped air bubbles to the pump, see figure 9. Figure 10 The elbows and fittings installed in the pump suction must be selected and installed in such a way that the liquid enters the impeller in a symmetrical and orderly manner, this is achieved by installing a section of pipe of the same diameter as the pump suction and a length of 10 times that diameter, see figure 10.

  • Page 17: Auxiliary Connections

    That is why VOGT S.A., recommends the use of expansion joints as part of the piping system that connects to the pump, when conditions warrant it, see figure 12.
  • Page 18 Installation 5.8 Alignment Pumping equipment is assembled in the factory by qualified personnel; however, during transportation or handling, the equipment can suffer stresses that can cause misalignment between the pump and the motor, which can lead to bearing and coupling failures. Therefore it is important to check and correct the alignment when necessary, see figure 14. If the equipment handles high temperature fluids, the final alignment should be done with the equipment at operating temperature.

  • Page 19: Before Start-Up

    Start-up 6.1 Before start-up After a pump has been installed and all mechanical, hydraulic and electrical connections have been made, it is ready for commissioning. However, prior to initial start-up, the following is recommended: 6.2 Pump Priming CAUTION Never run a pump dry. Most centrifugal pumps have a mechanical seal or stuffing box, therefore they cannot be run dry under any working conditions, otherwise the sealing elements will be seriously damaged.

  • Page 20: Oil Filling

    Start-up 6.5 Oil Filling The pump leaves the factory without oil in the bearing housing. Once assembled, it must be filled, see section 7.3.1 Oil filling. 6.6 Engine Considerations CAUTION It is important to check before the first start-up that the technical specifications of the motor, which come on the nameplate, correspond to the technical characteristics required by the pump and those of the place where the motor is going to operate.
  • Page 21 Start-up Motors with 6 wires can be started using a Star/Delta splitter only if the supply line voltage is equal to the minimum voltage shown on the nameplate, between the two values specified by the manufacturer. To make the star-delta connection, in the motor box, all jumpers are removed, leaving the terminals free.

  • Page 22: System Considerations

    Start-up 6.8 Start-up Check List 6.8.1 Before Start-up 6.8.1.1 Personnel Considerations The personnel responsible for commissioning, operation, maintenance, inspection and assembly must be suitably qualified and authorized. The scope of responsibility and supervision of the personnel must be precisely defined by the plant operator. The plant operator must ensure that the operating instructions are fully understood by the personnel.

  • Page 23: Maintenance

    Maintenance Because of the great variety of types, sizes and designs of centrifugal pumps, it is difficult to give specific guidelines on maintenance. Generally, some general recommendations can be given for the most common types of centrifugal pumps. 7.1 General Considerations CAUTION •...

  • Page 24: Oil Change

    Maintenance 7.3.1 Oil Change WARNING The oil should be changed after the first 200 operating hours for new bearings and then every 2000 operating hours or 3 months, depending on which comes first. • Before changing the oil, the pump must be started in order to fluidize the oil. •...

  • Page 25: Filling Procedure

    Maintenance 7.3.3 Filling Procedure 1.- Remove the vent plug, put the reservoir tank in the filling position, see figure 17. 2.- Pour the oil, slowly, through the vent hole until the oil starts to be seen through the connection elbow and the oil level is between the middle and the apex of the connection tube, see figure 17.

  • Page 26: Engine Lubrication

    Maintenance 6.- Replace the vent plug of the bearing body, see figure 19. VENT PLUG OIL LEVEL FOR PROPER OPERATION RESERVE TANK CONNECTION ELBOW DRAIN PLUG Figure 19 7.4 Engine Lubrication The lubrication of the motor should be done according to the indications given by the motor manufacturer, however, consider that some motor manufacturers, for their standard lines, contemplate that motors of less than 50 HP do not need relubrication, since these motors have sealed bearings, and that only motors of more than 50 HP need relubrication.

  • Page 27: Mechanical Seal

    7.6 Mechanical Seal The mechanical seals used as standard in the MD series pumps are of the unbalanced internal single spring type. This spring produces the minimum contact force between the sealing surfaces of the rotating and stationary units. The stationary unit is mounted on the union body in an elastomer cup.
  • Page 28 Maintenance 7.7 Stamp with Estopa Press There are two executions of stuffing box sealing, the standard execution, for clean fluids, see figure 22 and the special execution with lantern ring for dirty fluids, this execution needs external lubrication with clean and fresh fluid, see figure 23. For more details of operation and maintenance of the gland sealing system refer to the annex SERVICE AND MAINTENANCE Gland Sealing.

  • Page 29: Electric Motor Drive

    Maintenance 7.8 Electric Motor Drive The control of the motor bearings is critical, as failure of the bearings could result in damage to the pumping equipment. Therefore, it is important to perform vibration and temperature measurements to analyze the condition of the bearings. Each electric motor has a degree of protection that must satisfy each particular situation, in order to carry out a program of revision and cleaning of its internal components, it is advisable to carry out voltage and amperage controls in each phase separately.

  • Page 30: Impeller Clearance Adjustment

    Maintenance 7.9.2 Mounting 1. Assemble the pump (if it has been disassembled) and tighten the nuts of the pump casing - pump casing - union body. 2. Couple the pump to the motor, as indicated: a.- Coupling with Spacer. Mount the coupling with spacer and fix it with the screws. b.- Coupling without spacer.
  • Page 31 Maintenance 7.11.1 Impeller Backlash Adjustment Using Magnetic Base Dial Gauge • Remove the grid from the plug cover. • Remove the flexible body from the coupling core. • Loosen the shaft adjusting bolts (fig.25) until a clearance of about 5 to 8 mm is achieved. •...
  • Page 32 Maintenance 7.11.2 Impeller Clearance Adjustment Using Graduated Blades • Remove the grid from the plug cover. • Remove the flexible body from the coupling hub. • Loosen the shaft adjusting bolts (fig.26) until a clearance of about 5 to 8 mm is achieved. •...
  • Page 33 Maintenance 7.12 Recommended Tightening Torques for Assembly Torque Tightening Item. Nominal Size Newton-meter Figure 27 25.01 5/16 7/16 Denomination Item. Union Body Bolt/Pump Body 25.01 7/16 25.02 Union Body Bolt/Body Bearing 25.02 Suction Side Bearing Body Cover Bolt 25.03 25.03 Leg Fixing Bolt Bearing Body 25.04 7/16...

  • Page 34: Useful Tips

    Useful Tips for trouble-free operation 8.1 Flow Rate is Insufficient Possible Causes Solutions · Check and complete the filling of the system with 1.- The pump is not primed. liquid. · Check the delivery geometric height. 2.- The discharge head is too high (higher than that for which the pump was selected).
  • Page 35 Useful Tips for trouble-free operation 8.3 Pump Overloads Motor Possible Causes Solutions · Check and consult the 1.- The pumped liquid has a viscosity or density different from that for which the pump was manufacturer. selected. · Check and consider a pump repair. 2.- There are mechanical defects (moving parts rubbing against fixed parts).

  • Page 36: Warranty

    • Our Technical Service 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.
  • Page 37 High-End Services We have specialized engineers with great experience in hydraulic systems, developing an excellent service. We have implementad a comprehensive service system, which allows us to provide effective and timely solutions far each of our clients, independent of the industrial sector to which they belong. In-Site Services Multi-Brand Technical Service ln-Site Repairs.
  • Page 38 Our Company It was founded in 1954 as a company dedicated to the manufacture of Pumps, with great success in the agricultural sector. Thanks to an intense development of technologies, engineering and innovation, we position ourselves as a leader in the manufacture and commercialization of solutions and pumping equipment in a wide spectrum of markets, such as mining, construction, agriculture, sanitation and the industrial sector in general.

This manual is also suitable for:

Mde seriesHde series

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