Pompetravaini TRH Series Operating Manual
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Pompetravaini TRH Series Operating Manual

Liquid ring vacuum pumps and compressors
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(NA4.IS.VUOT.GB00 - Rev. 5.5_02-2020)
OPERATING MANUAL
LIQUID RING VACUUM PUMPS
AND COMPRESSORS
Series
TRH - TRS - TRM - TRV - SA
&
Systems type
HYDROSYS - OILSYS

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  • Page 1 (NA4.IS.VUOT.GB00 - Rev. 5.5_02-2020) OPERATING MANUAL LIQUID RING VACUUM PUMPS AND COMPRESSORS Series TRH - TRS - TRM - TRV - SA & Systems type HYDROSYS - OILSYS...

  • Page 2: Warranty

    If it is not intended to proceed autonomously at the management of the electrical pump assembly at authorized disposal companies it is possible to contact the Pompetravaini branch closer to you that will give you the necessary information on a proper disposal in accordance with mandatory laws.

  • Page 3: Key To Symbols

    Documentation and manuals in the two official languages are available on the Pompetravaini website. Operating manual liquid ring vacuum pumps and compressors series TRH - TRS - TRM - TRV - SA & Systems type HYDROSYS - OILSYS...

  • Page 4: General Instructions

    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. Therefore the pump CANNOT be used for applications other than those specified on the order.

  • Page 5: In Case Of Emergency

    HYDROSYS or OILSYS which utilise said pumps. NOTE: Capacities, vacuum and pressures are nominal and are the maximum attainable values under standard operating conditions. Please contact POMPETRAVAINI for data on liquid ring compressors series TR… Single stage liquid ring vacuum pumps Capacity to 350 m...
  • Page 6 ≥ 6 pH limit for stainless steel ≥ 2,5 The above values are approximate and refer to ambient temperature. It is recommended to contact POMPETRAVAINI for doubts, particular conditions or in case different materials are used.
  • Page 7 POMPETRAVAINI's customer service department.
  • Page 8 Fig. 2 Fig. 1 (For the Oilsys systems see chapter 21) ----------------------------------------------------------------------------------------------------------------------------- -------------------------------- Fig. 3 >90° Fig. 4 Operating manual liquid ring vacuum pumps and compressors series TRH - TRS - TRM - TRV - SA & Systems type HYDROSYS - OILSYS...

  • Page 9: Storage Instructions

    6 - STORAGE INSTRUCTIONS After receipt and inspection, if not immediately installed, the unit must be repackaged and stored. For a proper storage proceed as follows: store the pump in a location that is closed, clean, dry and free of vibrations do not store in areas with less than 5°C temperature (for lower temperature it is necessary to completely drain the pump of any liquids that are subject to freezing).

  • Page 10: Piping Connections

    Concrete pads and other concrete works must be aged, dry and clean before the pump assembly can be positioned in place. Complete all the work relating to the foundations and grouting of the pump assembly, before proceeding with the mechanical and electrical portion of the installation. 7.1 - PIPING CONNECTIONS Identify first locations and dimensions of all connections required to interconnect the pump with the installation, then proceed with the actual piping: connect the pump suction and discharge flanges, the service liquid line and all other...
  • Page 11 7.3 - INSTALLATION SCHEMATICS FOR LIQUID RING VACUUM PUMPS CAUTION! Possible contact with hazardous media and hazardous substances, cold or warm. Operate only provided with apposite protective devices. The working principle of the vacuum pump requires a continuous flow of fresh and clean liquid that enters the pump at the service liquid connection identified by the letter Z (see chapter 7.11).
  • Page 12 7.4 - INSTALLATION SCHEMATICS FOR LIQUID RING COMPRESSORS The liquid ring vacuum pump can also operate as a compressor up to a maximum differential pressure, depending upon the models, of about 2 bar. The compressors series SA are specifically engineered to perform with differential pressures of up to 10 bar, depending on models.
  • Page 13 2,00 TRVN 80-600 For the above pumps running as compressors without the specific performance curves, please contact POMPETRAVAINI. O at 15°C) AND PRESSURE FOR COMPRESSORS SERIES “SA” 7.8 - SERVICE LIQUID FLOW (H Values are applicable when the compressor suction is barometric pressure (1013 mbar) and the gas is air at 20°C.
  • Page 14 7.9 - TYPICAL INSTALLATION SCHEMATICS FOR VACUUM PUMPS Fig. 6 1 Separator/reservoir 2 Non return valve 3 Shut off valve 4 Liquid ring vacuum pump 5 Solenoid valve 6 Electric motor 7 Level gauge glass 8 Float valve 9 Heat exchanger 10 Make-up solenoid valve Fig.
  • Page 15 7.10 - TYPICAL INSTALLATION SCHEMATICS FOR COMPRESSORS Fig. 9 19 Valve for spare vacuum connection 20 Vacuum gauge 21 Anti-cavitation valve 22 Circulating pump 23 Pressure relief valve 24 Overflow valve 25 Draining solenoid valve 26 Solenoid valve for heat exchanger cooling liquid Fig.
  • Page 16 7.11 - CONNECTIONS LOCATION SEEN FROM SEEN FROM DRIVE VISTA LATO VISTA NON DRIVE END OPPOSTO COMANDO LATO COMANDO COLLETTORE MANIFOLD (Sul lato opposto) (Opposite side) TRHE 32-4 Fig. 12 - Pomp series TRH (for details see tab. 3) TRMX-TRVX 257 TRMB 32 TRMX 327 &...
  • Page 17 VISTA LATO VISTA SEE FROM SEE FROM OPPOSTO COMANDO LATO COMANDO NON DRIVE END DRIVE END MANIFOLD COLLETTORI Fig. 14 - Pomp series TRS (for details see tab. 3) (Sul lato opposto) (Opposite side) Tab. 3 - Pomp series TRH PUMP Flange Qty.°...
  • Page 18 NOTE: The drawings are generic and schematic: connections dimensions depend on pump type and on mechanical seals supplier, for more detailed information please contact POMPETRAVAINI. Operating manual liquid ring vacuum pumps and compressors series TRH - TRS - TRM - TRV - SA & Systems type HYDROSYS - OILSYS...
  • Page 19 7.12 - PUMP ENGINEERING DATA Tab. 4 Operating Installed speed Motor size Electric Motor PUMP frame size MODEL dB(A) class 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz TRHE 32-4 67 (78) 1450 1750 0,55 0,75 80 A 80 B TRHC 32-20...
  • Page 20 Operating Installed speed Motor size Electric Motor PUMP frame size MODEL dB(A) class 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz TRMB 25-30 65 (75) 0,75 80 A 80 B TRMX 257 64 (74) 90 S 90 L TRMB 32-50 69 (79)
  • Page 21 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 22 Tab. 5 POWER Noise level L Noise level L ATEX dB(A) dB(A) 8 poles 6 poles 4 poles 2 poles 8 poles 6 poles 4 poles 2 poles 55 (63) 50 (58) 48 (56) 59 (67) 54 (62) 48 (56) 53 (61) 64 (72) 0,75...

  • Page 23: 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 24 LANTERN SET SCREW ALIGNMENT LINES SHAFT HALF COUPLING PUMP/MOTOR MOTOR HALF COUPLING SUPPORT FOOT Fig. 18 Fig. 19 2 - Insert the perforated metal sheet coupling guard inside the lantern so that the coupling is accessible from one of the lateral openings.
  • Page 25 COUPLING GUARD EXTENSION Fig 22 - CHECKING ALIGNMENT ON BASE MOUNTED PUMP DESIGN COUPLING GUARD COUPLING GUARD EXTENSION EXTENSION Fig. 23 - ASSEMBLING THE UNIT ON THE BASEPLATE 8 - Place the electric motor on the baseplate and bring the two coupling halves together with approx. 2 mm gap between them keeping the motor axially aligned with the pump shaft.

  • Page 26: Electrical Connections

    Find the minimum and maximum width of the coupling, the difference between these two readings "Y" (Y1-Y2) should no exceed the value listed in tab. 6 for the given coupling size. Should this value be greater it will be necessary to correct the alignment by shimming the pump and/or motor. Following this operation it is recommended to check once more the value "X"...

  • Page 27: Check List Prior To Start-Up

    When pump ITEM 4 is fitted in a partial recovery or total recovery or HYDROSYS systems, as built by POMPETRAVAINI, it is required to have drain valve ITEM 11 at separator ITEM 1 in the closed position, flow regulating valve ITEM 13 and overflow valve ITEM 24 in the open positions. Separator overflow valve ITEM 24 should be piped to...

  • Page 28: Operation

    drain (or collecting container). Before start-up fill the pump to the shaft centreline, separator and piping of system with service liquid through pump inlet flange or fill connection ITEM 28. Check all components for leakage. If the automatic drain valve ITEM 48 is installed, the overflow valve ITEM 24 must be closed after the filling. CAUTION! Possible contact with hazardous media, cold or warm, and pump surfaces, cold or warm.

  • Page 29: Operating Maintenance

    ITEM 1B, then partially open flow regulating valve ITEM 13 between the discharge of circulating pump ITEM 22 and the heat exchanger ITEM 9 and the by-pass valve ITEM 13A. If the system is fitted with a separator cyclone ITEM 1D and the adjacent collecting tank ITEM 1E, it is required to close valves ITEM 11A and 12 and open valve ITEM 13E.
  • Page 30 This is a damaging condition for the impellers, port plates and casings. The cavitation causes erosion taking away metal particles and attacking the surface of the pump components. This is particularly damaging if the pump is handling corrosive gases, see chapter 16 for suggestions to correct the problem. Pump series TRH, TRM and TRV are designed for the application of an anti-cavitation valve that should be left open (if required) see fig.

  • Page 31: Bearings Maintenance

    To replace the oil demister filter, simply disconnect the oil scavenger line, remove the cover ITEM 1C, remove the used filter element. Dispose the waste grease according to the current regulations protecting the environment. Apply a liquid gasketing material over the 2 gasket faces of the new filter and place the latter in the housing, put in place the cover and the scavenger line.

  • Page 32: Mechanical Seals

    Mechanical Seals can be of many different materials, types and configurations (see fig. 32-33-34 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 33 Required flow and pressure for buffer liquid are listed in tab. 7 and/or contact Pompetravaini and/or seal supplier. Standard mechanical seals supplied with our pumps meet ISO 3069/UNI EN 12756 standards, see pump “Disassembly and Assembly Instructions”...
  • Page 34 evaluation by our technical department. Mechanical seals do not require maintenance until losses of liquid are visible (for seal 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 35 Pressure at least 0,5 bar over the working pressure     Pump working pressure Pump working pressure Fig. 32 Fig. 33 Typical example of self-flushed SINGLE Typical example of DOUBLE BACK-TO-BACK mechanical seal with liquid from an outside source – API Plan 54 mechanical seal - API Plan 01, 02 or 11 Max pressure 0,3 bar over the atmospheric pressure...
  • Page 36 Minimum level sensor Tank fill plug Gauge Fig. 37 Typical example of seal tank, pressurised, cooling liquid and Pressure switch Outlet cooling liquid 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 37: Mechanical Seal

    NOTE: The supplied data are for pumps in STANDARD construction. For special construction please contact POMPETRAVAINI. Operating manual liquid ring vacuum pumps and compressors series TRH - TRS - TRM - TRV - SA & Systems type HYDROSYS - OILSYS...

  • Page 38: Trouble Shooting: Problems, Causes And Solutions

    16 - TROUBLE SHOOTING: PROBLEMS, CAUSES AND SOLUTIONS Consult the following tab. 9 when problems are experienced, if solutions are not found in this chart or should there be any doubts, do not hesitate to contact POMPETRAVAINI or your local representative. Tab. 9 - LIST OF PROBLEMS...

  • Page 39: Spare Parts

    Avoid damaging other system components. Before returning the pump to POMPETRAVAINI or an authorized service decontaminate the pump and ask for the “handled media” examination form.

  • Page 40: Engineering Data

    Regarding the performance variation due to changes of specific gravity and viscosity, it can be assumed a proportional variation in power consumption however, the changes in capacity at different pressures must be analysed case by case. Please refer the conditions to POMPETRAVAINI when these corrections are needed. ABSOLUTE PRESSURE...
  • Page 41 19.2 - SERVICE LIQUID TEMPERATURE CHANGE ACROSS THE PUMP The service liquid of a liquid ring pump absorbs total heat Q as follows: (kJ/h) = Q Where: = 0,9 x P x 3600 = Isothermal compression heat = Condensation heat x T = Cooling heat (Generally negligible, ignored in calculation of Q = mass condensed incoming vapour in kg/h...

  • Page 42: Unit Conversion Table

    19.4 - UNIT CONVERSION TABLE Absolute pressure Vacuum Operating manual liquid ring vacuum pumps and compressors series TRH - TRS - TRM - TRV - SA & Systems type HYDROSYS - OILSYS...

  • Page 43: Working Principle

    20 - ENGINEERING DATA FOR “HYDROSYS” SYSTEMS WORKING PRINCIPLE The HYDROSYS packages main components are: a liquid ring vacuum pump ITEM 4 from series TRH, TRS, TRM, TRV, an air/liquid separator reservoir ITEM 1, a heat exchanger ITEM 9, all mounted on a common and compact frame ITEM 30.
  • Page 44 SOME EXAMPLES OF “HYDROSYS” SYSTEMS (General schematic drawings) Fig. 44 - Option with Shell & Tubes heat exchanger LEGEND Separator reservoir Separator reservoir with removable lid Check valve Vacuum pump Electric motor Level gauge Fig. 43 - Accessories upon request Float valve Heat exchanger Solenoid valve liquid make-up...
  • Page 45 21 - ENGINEERING DATA FOR “OILSYS” SYSTEMS WORKING PRINCIPLE OILSYS packages main components are: a liquid ring vacuum pump ITEM 4 from series TRH, TRS, TRM, TRV, an air/liquid separator reservoir ITEM 1B which is also a self-contained frame, a heat exchanger ITEM 9 and an oil demister filter ITEM 1C.
  • Page 46 21.1 – LIFTING AND MOVING OF OILSYS SYSTEMS DANGER! Danger due to overturning or crushing. The Oilsys systems must ALWAYS be handled and lifted and moved in horizontal position and without any oil in the tank. For a safe lifting it is necessary use only ropes or belts positioned on metal bars that were previously inserted in the lifting holes present on the base (see fig.
  • Page 47 Operating manual liquid ring vacuum pumps and compressors series TRH - TRS - TRM - TRV - SA & Systems type HYDROSYS - OILSYS...
  • Page 48 20022 CASTANO PRIMO (Milano) ITALY - Via per Turbigo, 44 – Zona Industriale Tel. 0331 889000 – Fax 0331 889090 - www.pompetravaini.com firmataria della presente, dichiara sotto la propria esclusiva responsabilità, che la macchina è conforme a quanto prescritto dalle Direttive...

This manual is also suitable for:

Trs seriesTrm seriesTrv seriesSa seriesTrh 32-4Trh 32-20 ... Show all

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