Pompetravaini AT-TB Series Operating Manual
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Pompetravaini AT-TB Series Operating Manual

Centrifugal
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(Rev. 2.5_05-2019)
OPERATING MANUAL
FOR
CENTRIFUGAL PUMPS
AT - TB...
MC... - TC...
TMA

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Summary of Contents for Pompetravaini AT-TB Series

  • Page 1 (Rev. 2.5_05-2019) OPERATING MANUAL CENTRIFUGAL PUMPS AT - TB... MC... - TC...

  • Page 2: Warranty

    Distributor: WARRANTY: All products manufactured by POMPETRAVAINI are guaranteed to meet the conditions listed on the general terms and conditions of sale and/or conditions listed on the Order Confirmations. Failure to strictly adhere to the instructions and recommendations listed in this manual will void the manufacturer’s warranty.

  • Page 3: Key To Symbols

    INDEX General instructions Safety instructions In case of emergency Basic first aid Pump outlines Pump model numbers and materials of construction tables Unpacking, lifting and moving instructions Storage instructions Installation instructions Installation of pump/motor assembly Suction and discharge piping 7.2.1 - Suction piping 7.2.2 - Discharge piping...

  • Page 4: General Instructions

    They usually have knowledge of basic first aid. The pump is to be used only for the applications specified on the confirming order for which POMPETRAVAINI has selected the design, materials of construction and tested the pump to meet the order specifications.

  • Page 5: In Case Of Emergency

    ALWAYS stop the pump prior to touching it for whatever the reason. Wait for the complete pump stopping and make sure that all the installation control devices are properly set in order to avoid any return flow. Pump and piping connected to the pump must NEVER be under pressure when maintenance or repair is carried out. NEVER work on the pump when it is hot.
  • Page 6 For information regarding temperature and pressure LIMITATIONS applicable to the varying designs, types and materials of construction please contact POMPETRAVAINI or your closest authorised representative. The maximum operating pressure is normally the maximum discharge pressure developed by the pump at the discharge connection.
  • Page 7 Check that pump/or accessories such as tanks, piping, valves, etc. are free from visible markings such as dents, scratches and damage which may have occurred during transportation In the event of damage, report this immediately to the transport company and to POMPETRAVAINI’s customer service department.

  • Page 8: Storage Instructions

    DANGER! Danger due to cut, prick or abrasion Take immediate actions to dispose of possible packaging parts that may generate injuries or risks (for example edges, nails, splinters, etc.) We remind that the single stage centrifugal pumps supports contain lubricating oil. Organize the right management of materials subjected to controlled and differentiate disposal (for example plastic, cartoon, polystyrene materials, etc.) according to the laws into force and to a safe local environment management.
  • Page 9 Even if the machine is properly stored, as described in the instructions above, in case of long term storage the following instructions must be taken into account. After a storage period of 6 months the lubricant should be replaced completely. In case of a storage period longer than 12 months, the machine shall be carefully checked and inspected before installation.

  • Page 10: Installation Instructions

    7 - INSTALLATION INSTRUCTIONS CAUTION! Avoid installing the unit in narrow areas and lacking of ventilation where unfavourable conditions for the personnel may take place. Allow the personnel a good visibility of the pump assembly by providing a proper lighting. A proper pump installation must not transmit vibrations to ambient in the permanent presence of personnel.
  • Page 11 Inlet and discharge piping should be of same size as the pump flanges, where possible increase the pipe size but NEVER decrease the size. In general the liquid velocity in the suction piping should not exceed 2 m/s and in the discharge piping should be less than 3 m/s.
  • Page 12 FLOODED FLOW CONTROL VALVE STRAINER SUCTION FLOODED NON RETURN VALVE SUCTION NON RETURN VALVE ISOLATING VALVE PRESSURE GAUGE PRESSURE GAUGE pompetravaini MINIMUM FLOW ORIFICE BY-PASS LINE SUCTION (FOR INSTALLATIONS LIFT SUCTION ISOLATING VALVE ISOLATING WHERE LINE SHUT-OFF LIFT IS POSSIBLE)
  • Page 13 FLOW CONTROL VALVE FLOW CONTROL VALVE NON RETURN VALVE NON RETURN VALVE FLOODED STRAINER FLOW METER OR FLOW SWITCH PRESSURE GAUGE SUCTION ACCELOROMETER SENSOR PRESSURE GAUGE SUCTION LIFT ISOLATING POWER SUPPLY VALVE RECORDER (FOOT VALVE) HEAT SENSOR FILTER FILTER Pump series TCK Pump series MC...
  • Page 14 = Plug to be removed in case of use Threaded connection = Before connecting remove the plastic protection plug For each pump specific connections dimension please consult our website "www.pompetravaini.it". Operating manual for centrifugal pumps AT - TB… - MC… - TC… - TMA...
  • Page 15 Fig. 9 - CONNECTIONS AND HOOK-UPS FOR FLUSHING Pumps series MC... - TC... Standard connections and hook-ups Pumps series MC... - TC... Connections for designs /C - /R - /RR - /R2 - /B d2.2 d4.2 d4.1 d4.1 d2.1 d6 * Pumps series MC...
  • Page 16 Fig. 10A - CONNECTIONS AND HOOK-UPS FOR FLUSHING Pumps series TCD Standard hook-ups and connections - (* Only for TCD/2-SP) Pumps series MCU-CH n.s. group 3 and 4 Standard hook-ups and connections Pumps series TCH and TCN group 5 Standard hook-ups and connections for Double back to back mechanical Seals Operating manual for centrifugal pumps AT - TB…...
  • Page 17 Fig. 10B - CONNECTIONS AND HOOK-UPS FOR FLUSHING Pump series TCK Pump series MCM Standard connections and hook-ups Standard connections and hook-ups NOTE: d19 = on both side for gr. 2 Pumps series TBH/C - TBH/KC - AT/KC - TBA/C Standard hook-ups and connections Pumps series TBH/CT - AT/CT Connections for cooling or heating...
  • Page 18 Fig. 11A - CONNECTIONS AND HOOK-UPS FOR FLUSHING Pumps series TBH/KC-2T - AT/KC-2T Connections for mechanical seals flushing, cooling or heating Pumps series TBA/C-2T Connections for mechanical seals flushing, cooling or heating Pump series TBK Pump series TBAK Standard connections and hook-ups Standard connections and hook-ups Operating manual for centrifugal pumps AT - TB…...
  • Page 19 Fig. 11B - CONNECTIONS AND HOOK-UPS FOR FLUSHING Pumps series TMA 31 and 32/C and /R Standard hook-ups and connections Pumps series TMA 31 and 32/T Connections for cooling or heating Pumps series TMA 40 and 50/B - /R - /R2 Connections for mechanical seals flushing, cooling or heating Operating manual for centrifugal pumps AT - TB…...
  • Page 20 Fig. 12 - CONNECTIONS AND HOOK-UPS FOR FLUSHING Pumps series MC… - TC… (API Plan 11) Recycle directly from pump casing or via cooling Pumps series MC… - TC… Single or Double mechanical seal flushing with Seal Tank Pumps series TCD/SP Mechanical seal flushing with Seal Tank Operating manual for centrifugal pumps AT - TB…...

  • Page 21: Alignment Instructions

    Coupling sizes and permissible coupling tolerances listed in this manual are applicable to the particular coupling brand installed by POMPETRAVAINI as a standard. For sizes and tolerances of other type of couplings, follow the instructions given by their respective manufacturer.
  • Page 22 LANTERN SET SCREW ALIGNMENT LINES SHAFT HALF COUPLING MOTOR/PUMP MOTOR HALF COUPLING SUPPORTING FOOT Fig. 13 Fig. 14 2 - Insert the perforated metal sheet coupling guard inside the lantern so that the coupling is accessible from one of the lateral openings.
  • Page 23 7 - Remove the coupling guard and its extension (if there is one) attached to the pump, by removing the two locking screws (see fig. 17 and 18). COUPLING GUARD COUPLING GUARD EXTENSION EXTENSION Fig. 18 - MOUNTING THE UNITS ON THE BASEPLATE 8 - Place the electric motor on the baseplate and bring the two coupling halves together with approx.

  • Page 24: Electrical Connections

    Tab. 2 COUPLING PARALLEL ANGULAR “Ø A” mm “S” mm "X" mm "Y" mm 60 ÷ 80 0,10 0,20 2 to 2,5 100 ÷ 130 0,25 0,15 150 ÷ 260 3 to 3,5 4 to 5 0,30 0,30 5 to 7 11 - Install the coupling guard and its extension (if applicable) on the pump, secure the two locking bolts.

  • Page 25: Check List Prior To Start-Up

    “ATEX” on the name plate, and the integrative ATEX manual hasn't been received or undelivered, it strictly forbidden proceed to start up the pumps but necessary to consult POMPETRAVAINI for clarifications. CAUTION! All questions listed below must have POSITIVE answers prior to proceeding to the pump start-up (the following list may not be complete for special installations which may require further precautions as the cases dictate).
  • Page 26 CHECK PUMP-MOTOR COUPLING ALIGNMENT! This must be done prior to the first start-up and before every start-up if pump or motor has been removed from the installation for maintenance or other reasons. See chapter 8.2. 11.1 - START-UP Never run the pump when it is dry! Before starting-up verify that all auxiliary supplies are in place, ready to be used and, where necessary, they have been correctly opened.

  • Page 27: Operation

    11.1.5 – Start-up a pump with back pressure at discharge side In this case a non-return valve must always be installed in the discharge piping. The unit is started with the discharge valve partially open and after the pump pressure exceeds the back pressure in the discharge line then is time to adjust the discharge flow regulating valve to attain the operating pressure.

  • Page 28: Lubrication Instructions

    Higher values could indicate operation at low flow, obstruction of internal flushing connections or mechanical damage of the magnetic coupling. Please contact POMPETRAVAINI if there are doubts regarding abnormal temperature rises. 13 - LUBRICATION INSTRUCTIONS Pumps often operate in severe conditions and the bearings are subject to relevant radial and axial forces.
  • Page 29 For the first filling proceed as follows: remove vent plug of the bearing frame upset the oil-cruet pour oil into the bearing frame through the hole of plug till you can see oil in the oil-filler elbow fill the oil-filler pouring oil directly into the oil-cruet and NOT into the elbow (see fig.

  • Page 30: Mechanical Seals

    Mechanical Seals can be of many different materials, types and configurations (see fig. 28-29-30 for some examples). To assure maximum reliability and safe operation Pompetravaini evaluates seal choices at time of pump selection in connection with customer’s requirements, application and liquid details.
  • Page 31 See fig. 20-21-22-23 for locations of liquid flushing connections. Required flow and pressure for buffer liquid are listed in tab. 3 and/or contact Pompetravaini and/or seal supplier. See tab. 4 for liquid flow required to cool or heat the seal housings.
  • Page 32 replacement see “Disassembly and Assembly Instructions”). Losses of few drops of liquid in several minutes is normally considered acceptable and it is not an indication of seal failure. Seal leakage or even seal failure should be properly corrected considering the impact on environment, toxicity and safety issues.
  • Page 33 Pressure at least 0,5 bar over the working pressure     Pump working pressure Pump working pressure Fig. 28 Fig. 29 Typical example of self-flushed SINGLE seal Typical example of double Back-to-Back mechanical seal with API Plan 01, 02 or 11 liquid from an outside source –...
  • Page 34 Minimum level sensor Tank fill plug Gauge Fig. 33 Typical example of seal tank, Pressure switch pressurised, cooling liquid Outlet cooling liquid and instrumentation. (Instrument location can vary) Temperature gauge Liquid level (must be higher than return liquid level from pump) Tank pressure plug NOTE: Tank installation...
  • Page 35 Consult the following table when problems are experienced, if solutions are not found in this chart (tab. 5) or should there be any doubts, do not hesitate to contact POMPETRAVAINI or your local representative. Tab. 5 - LIST OF PROBLEMS...
  • Page 36 Identify the causes and reinstate the correct working conditions deflections (refer to more specific points in the table) The pumped liquid is not adequate for Contact POMPETRAVAINI the seals The shaft sleeve is worn out Replace the sleeve with a new one...
  • Page 37 Before returning the pump to POMPETRAVAINI or an authorized service decontaminate the pump and ask for the “handled media” examination form. In case of pump removal from the installation dispose the unit by following the current regulations and the right measures to protect the environment.

  • Page 38: Spare Parts

    We recommend the use of original spares: in case this is not respected, POMPETRAVAINI declines any responsibility for possible damages and not correct running caused by not original spare parts.

  • Page 39: Engineering Data

    19 - ENGINEERING DATA 19.1 - STARTING TORQUE Starting torque of a centrifugal pump is very low. Usually standard electric motors may be safely used to drive this pump. Pump operational speed (any speed) is reached only if motor torque is greater than pump operating torque.
  • Page 40 19.2 - TYPICAL PERFORMANCE CURVES NPSH Typical performance curves Typical performance curves AT - TB… TC… - MC… - TMA for pumps series for pumps series Where: = Head NPSH = Net Positive Suction Head = Absorbed power = Capacity 19.3 - UNITS CONVERSION TABLE To convert To obtain...
  • Page 41 For higher values proceed with maintenance. NOTE: Pumps not included in the following tables have to be seen as a particular construction. Contact POMPETRAVAINI in order to know the data. Continuous Preventive Extraordinary...
  • Page 42 Noise level Vibration PUMP Noise level Vibration level PUMP MODEL level MODEL dB(A) class dB(A) class 4 poles 4 poles 4 poles 4 poles 202  203  < 73 (85) 204  < 70 (82) < 70 (82) 73 (85) 74 (86) 75 (88) 75 (88)
  • Page 43 Ex: motor 80 dB and pump 75 dB, level difference 5 dB, increment 1.2 dB, total power sound level 81.2 dB. Taking into account that the noise level depends on several factors, contact POMPETRAVAINI to know more accurate values.

  • Page 44: Total Weight

    COMMENTS NA4.IS.CENT.GB00 / PRINTED IN ITALY Manuale Centrifughe Inglese Continuing research of POMPETRAVAINI results in product improvements: therefore any specifications may be subject to change without notice. S.p.A. 20022 CASTANO PRIMO (Milano) ITALY Via per Turbigo, 44 – Zona Industriale Tel.

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