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VF
VF Series
Use and Maintenance
Manual
1

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Summary of Contents for Pratissoli VF 12

  • Page 1 Menu VF Series Use and Maintenance Manual...
  • Page 2: Table Of Contents

    INDEX 1. INTRODUCTION 2. SYMBOL DESCRIPTION 3. SAFETY 3.1 General safety indications....................5 3.2 High pressure unit safety requirements................5 3.3 Safety during operation......................5 3.4 General procedures for using nozzles ..................5 3.5 Safety during unit maintenance ...................6 4. PUMP IDENTIFICATION 5. TECHNICAL CHARACTERISTICS 6.
  • Page 3 15. TROUBLESHOOTING 16. EXPLODED VIEW AND PART LIST...
  • Page 4: Introduction

    1. INTRODUCTION This manual describes the use and maintenance instructions of the VF pump, and should be carefully read and understood before using the pump. Correct use and adequate maintenance will guarantee the pump’s trouble-free operation for a long time. The Interpump Group declines any responsibility for damage caused by misuse or the non-observance of the instructions indicated in this manual.
  • Page 5: Safety

    3. SAFETY 3.1 General safety indications The misuse of pumps and high pressure units, and the non-observance of installation and maintenance instructions may cause severe injury to people and/or damage to property. Anyone requested to assemble or use high pressure units must possess the necessary competence to do so, should be aware of the characteristics of the components assembled/used, and must adopt all the necessary precautions in order to guarantee maximum safety in any operating condition.
  • Page 6: Safety During Unit Maintenance

    3. We advise to employ a team of at least two Operators, able to provide mutual and immediate assistance if needed, and rotate their duties in case of long and heavy work. 4. Access to the work area that is within the water jet’s range must be absolutely forbidden; the area must be free of objects that may be unintentionally hit by the pressurised jet, causing damage or dangerous situations.
  • Page 7: Technical Characteristics

    5. TECHNICAL CHARACTERISTICS Flow rate Pressure Power Model l/min 12.5 1500 21750 36.8 VF 12 1200 17500 36.8 1100 16000 36.8 VF 14 1000 11600 36.8 6. DIMENSIONS AND WEIGHT For dimensions and weight of Standard Version pumps, please refer to fig. 2;...
  • Page 8: Information Regarding Pump Use

    fig. 2/a 7. INFORMATION REGARDING PUMP USE The VF pump has been designed to operate with filtered water (see paragraph 9.7) and at room temperature. Other fluids may be used only upon the approval of the Technical Department or Customer Assistance Service.
  • Page 9: Recommended Lubricant Oil Types And Manufactures

    7.4 Recommended lubricant oil types and Manufactures The pump is delivered with lubricant oil type Mobil DTE Oil BB (ISO VG 220), compliant with room temperatures ranging between 0°C and 30°C. Some recommended lubricant types are indicated in the table below; these lubricants are treated with additives in order to increase corrosion protection and resistance to fatigue (according to DIN 51517 part 2).
  • Page 10 In any case, oil must be changed at least once a year since it may deteriorate by oxidation. For room temperatures that differ from 0°C to 30°C, follow the indications contained in the diagram below, keeping in mind that the oil must have a minimum viscosity of 180 cSt. Viscosity / Room Temperature Diagram Room temperature Exhausted oil must be collected in an appropriate recipient and disposed of in apposite...
  • Page 11: Ports And Connections

    8. PORTS AND CONNECTIONS VF series pumps (see figure 4) are provided with: N° 2 inlet ports “IN“, 3/4” Gas. The line can be connected to either of the two inlet ports; the ones not being used must be hermetically sealed.
  • Page 12: Pump Installation

    Tappo Plug Pastiglia Testa Pompa Pump head 9. PUMP INSTALLATION 9.1 Installation The pump must be installed in a horizontal position using the apposite threaded feet M 16x1,5; fasten the screws with a torque value of 210 Nm. The base must be perfectly flat and sufficiently rigid in order to avoid bending and misalignments on the pump / transmission coupling axis due to the torque applied during operation.
  • Page 13: Sense Of Rotation

    9.2 Sense of rotation An arrow situated on the crankcase near the shaft indicates the correct sense of rotation. Standing in front of the pump head, the sense of rotation must be as shown in fig.6. fig. 6 Lato Dx Right Side Lato Sx Left Side...
  • Page 14: Hydraulic Connections

    9.4 Hydraulic Connections In order to isolate the system form the vibrations produced by the pump, we advise to build the first section of the duct near the pump (both for intake and delivery) with flexible tubes. The consistency of the intake section must allow to avoid deformation caused by the depressurisation produced by the pump.
  • Page 15: Filtering

    9.7 Filtering The filtration degree for these pumps must be max. 20 μ (micron ); this is normally obtained by means of a series of at least three filters, positioned as indicated in fig. 7. 1 Filter N° 1 5 Pressure Gauge 9 Safety valve Inlet 2 Booster Pump...
  • Page 16: Internal Diameter Of The Pipeline

    9.9 Internal diameter of the pipeline To determine the internal diameter of the piping, please refer to the following diagram Suction pipe With a flow rate of 15~L/min and water speed of 0.5 m/sec. The diagram line that connects the two scales intersects the central scale, indicating the diameters, at a value of ~ 25 mm.
  • Page 17: V-Belt Transmission

    The diagram does not take into consideration the pipe and valve resistance, the pressure drop due to the pipe length, the viscosity and the temperature of the pumped fluid. If necessary, contact our Technical Department or Customer Assistance Service. 9.10 V-belt transmission The pump may be driven by a v-belt system.
  • Page 18 Single race Multiple races fig. 9 Dimensions (in mm) Belt section as indicted in symbol DIN XPB/SPB XPC/SPC DIN 7753 part 1 and B.S. 3790 symbol B.S./ISO Belt section as indicted in symbol DIN DIN 2215 e B.S. 3790 symbol B.S./ISO Pitch width 14.0 19.0...
  • Page 19: Definition Of Belt Static Tension Values

    Do not use for banded v-belts. b) Use high efficiency belts – for example XPB instead of SPB; this will allow to use a lower number of belts to transmit the same power, and consequently a minor distance of the resultant from the shaft shoulder (P.T.O.) “a“...
  • Page 20 Lf = centre distance mm fig. 12 Conclusion: using a dynamometer, by loading the belt with 75 N as indicated in fig. 13, you will obtain a flexion value “te” of about 10.8 mm. Lf = Centre distance te = Belt flexion Fe = 75 N Dynamometer load fig.
  • Page 21: Start-Up And Operation

    . If required, or during normal maintenance, never replace a single belt but the entire set. 10. START-UP AND OPERATION 10.1 Preliminary Inspections Before start-up, be sure that: The suction line is connected and up to pressure (see paragraphs 9.4 – 9.5 – 9.6) the pump must never run dry.
  • Page 22: Seal Packing Cooling Circuit

    10.3 Seal packing cooling circuit During operation, a certain amount of water coming from the seal packing cooling circuit is discharged from the orifice 4. The draining of this circuit must be sent back to the suction line before the booster pump (fig.15), or in an apposite tank.
  • Page 23 PREVENTIVE MAINTENANCE Every 500 hours Every 1000 hours Check oil level Change oil Check / Replace: Valves Valves seats Valve springs Check / Replace: H.P. packings L.P. packings...
  • Page 24: Stopping The Pump For Long Periods

    12. STOPPING THE PUMP FOR LONG PERIODS 12.1 Inactivity for long periods If the pump is started up for the first time after a long period from the shipment date, before starting operation check the oil level, check the valves as indicated in Chapter 10, and therefore follow the start-up procedures described.
  • Page 25: Troubleshooting

    6) incorrect positioning or sizing of the pipes 7) non authorised design changes 8) cavitation 15. TROUBLESHOOTING The pump does not produce any noise at start-up: The pump is not primed and is running dry There is no water in the inlet line The valves are blocked The delivery line is closed and does not allow the air in the pump to be discharged The pump pulses irregularly (knocking):...
  • Page 26 16. EXPLODED VIEW AND PART LIST...
  • Page 27 Offenders will be prosecuted according to the laws in force. PRATISSOLI a brand of INTERPUMP GROUP S.P.A. 42049 S.ILARIO - REGGIO EMILIA ( ITALY ) Tel. +39 - 0522 - 904311 Fax +39 - 0522 - 904444 E-mail: info@pratissolipompe.com...

This manual is also suitable for:

Vf 14Vf series

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