GESTRA UNA 38 Original Installation Instructions
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GESTRA UNA 38 Original Installation Instructions

Ball-float steam trap
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Ball-float steam trap
UNA 38
UNA 39
Original Installation Instructions
818603-03

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Summary of Contents for GESTRA UNA 38

  • Page 1 Ball-float steam trap UNA 38 UNA 39 Original Installation Instructions 818603-03...

  • Page 2: Table Of Contents

    Contents Foreword ............................3 Availability ............................. 3 Formatting features in the document ...................... 3 Safety ..............................3 Use for the intended purpose ......................... 3 Basic safety notes ..........................4 Information on property damage or malfunctions ..................4 Qualification of personnel ........................5 Protective gear ............................

  • Page 3: Foreword

    Certain text elements of this installation & operating efficiently for their intended purpose. manual feature a specific typographic design. You  UNA 38 can easily distinguish the following text elements: Standard text  UNA 39...

  • Page 4: Basic Safety Notes

    Basic safety notes temperature ratings see name plate and the Technical Data section " ". Risk of severe injuries Risk of minor injuries  The equipment is under pressure during operation and may be hot. Before carrying out  Sharp edges on internals present the danger of any work on the equipment make sure that the cuts to hands.

  • Page 5: Qualification Of Personnel

    Qualification of personnel Typographic features of warning notes A qualified person must be acquainted with and experienced in the following:  the pertinent on-site rules and regulations for DANGER preventing fire and explosions as well as industrial safety regulations Notes with the heading DANGER warn against imminent dangerous situations that ...

  • Page 6: Description

    Scope of supply Description Our equipment is delivered packed and ready for assembly. Scope of supply and equipment specification Equipment specification UNA 38 Designation Designation Hex nuts Cover Sleeves Rating plate Body Drain with screw plug Body gasket SIMPLEX AO 80 MAX control unit...
  • Page 7 UNA39 Designation Designation Direction of flow arrow Manual vent valve Body Rating plate Set screws Sleeves Body gasket Hex nuts SIMPLEX control unit Drain with screw plug Cover SIMPLEX AO 140 MAX control unit...
  • Page 8 Optional extras Lever for manual lifting lever The following items are available as optional extra: Manual lifting lever Optional equipment for UNA 38 Designation Manual vent valve with socket wrench Sealing ring for manual vent valve Manual lifting lever with socket wrench...
  • Page 9 End connections Direction of flow The equipment is available with the following end Thanks to the different versions of the UNA 38, you connections: can adapt the equipment's direction of flow to suit  Flanges your system. The following installation positions are possible: ...
  • Page 10 Application of European Directives Pressure Equipment Directive The equipment conforms to this directive (see "Manufacturer's Declaration" section) and can be used for the following media:  Fluids of group 1  Fluids of group 2 ATEX Directive The equipment does not have its own potential ignition source and is not subject to this directive (see "Manufacturer's Declaration"...

  • Page 11: Task And Function

    If the float (33) is raised while the fill level is rising, first of all the nozzle needle (34) is pulled out of the Type UNA 38 and UNA 39 units are used to remove pilot valve. This causes a small amount of medium condensate from steam and other condensable to flow through the pilot valve.

  • Page 12: Storing And Transporting The Equipment

     Air humidity below 50 %, not condensing Storing and transporting the  Indoor air: clean, salt-free and non-corrosive equipment  Temperature 5–40 °C. Caution  Make sure that all these requirements are always met when storing the equipment. Risk of injury: Parts of the body can be ...

  • Page 13: Mounting And Connecting The Equipment

     To install the manual vent valve, proceed as further use. described on page 29. Orientation of the equipment The different versions of the UNA 38 equipment allow you to adapt the direction of flow to suit your system. The following installation positions are possible: ...

  • Page 14: Connecting The Equipment

    Connecting the equipment Attention! DANGER Malfunctions may occur if the control unit is installed incorrectly. Incorrectly connected equipment can  When installing the equipment make cause fatal accidents or severe injuries. sure that the name plate on the cover  Make sure that only qualified skilled is on top and the float arm is free to personnel connect the equipment to move up and down.
  • Page 15  If you are unable to satisfy one or more of these Attention! requirements, please contact the manufacturer.  Connect the end connections of the equipment Equipment will be damaged if the end properly to the pipes. connections are undersized. ...

  • Page 16: Operation

     Open and close the optional manual vent valve  Open and close the optional manual lifting lever The UNA 38 comes with its own tool, a socket wrench with material number 526110. The UNA 39 is supplied with a lever for operating the manual vent valve or manual lifting lever.

  • Page 17: After Operation

    After operation DANGER DANGER If the equipment is used in contaminated areas there is a risk of severe injuries or If fluid escapes personnel may suffer death caused by harmful substances in or severe injuries, poisoning or even loss of on the equipment.

  • Page 18: Removing External Dirt Deposits

     To close the screw plug of the UNA 39, tighten  27 it to a torque of 170 Nm.  30  To close the screw plug of the UNA 38, tighten  32 it to a torque of 70 Nm.  36 ...
  • Page 19 The torques required for tightening threaded connections vary depending on the type of equipment and connection. Designation Torque [Nm] UNA 38 UNA 39 Set screws Hex nuts on set screws Allen screws on control – unit Regulating nut – Bimetallic vent –...
  • Page 20  Remove the twelve hex nuts (23). depending on the type of equipment.  Remove the twelve sleeves (22) from the set To remove the cover of the UNA 38, proceed as screws (16). follows:  Remove the cover (19) from the body (15).
  • Page 21 The intervals depend on the amount depending on the type of equipment. of dirt in the system. The operator must determine To remove the control unit of the UNA 38, proceed the maintenance intervals. as follows:  Remove any parts that are dirty and cannot be ...
  • Page 22  Replace all gaskets with new ones of the same type. The jobs described in this section differ depending on the type of equipment. To install the control unit of the UNA 38, proceed as follows: Attention! Malfunctions may occur if the control unit is installed incorrectly.
  • Page 23 To install the control unit of the UNA 39, proceed as follows:  Fit a new regulator gasket (43) to the control unit.  Position the control unit (18) on the body (15).  Screw in the two Allen screws (44). ...
  • Page 24  Make sure that the cover is not tilted or skewed when refitted. The jobs described in this section differ depending on the type of equipment. To install the cover of the UNA 38, proceed as follows:  Make sure that the control unit is correctly fitted.
  • Page 25 To install the cover of the UNA 39, proceed as follows:  Make sure that the control unit is correctly fitted. The float must be able to move upwards.  Lubricate the threads and contact surfaces of the set screws with temperature-resistant lubricant.

  • Page 26: Servicing The Equipment And Installing Spare Parts

    Servicing the equipment and installing spare parts You may exchange the following component parts in case of wear or damage: Spare parts for UNA 38...
  • Page 27 Designation Order number Body gasket 524532 4, 8 DUPLEX control unit, complete, with body gasket 560550 560551 560552 4, 13 DUPLEX AO 80 MAX control unit, complete, with body 80 MAX 560553 gasket 4, 7 SIMPLEX control unit, complete, with body gasket 560554 560555 560556...
  • Page 28 Spare parts for UNA 39 Designation Order number Body gasket 523031 17, 18 Control unit, complete, with body gasket 560172 560171 560170 17, 25 Control unit, complete, with body gasket 140 MAX 560179 20, 46 Manual vent valve, complete, with sealing ring 560178 17, 43, Seal set...
  • Page 29  If necessary, remove the socket wrench  Tighten the bimetallic vent to a torque of (UNA 38) or the lever (UNA 39) from the manual 90 Nm. vent valve.  Remove the manual vent valve from the threaded hole in the body.
  • Page 30 You can replace a damaged manual lifting lever in  Use only new gaskets of the same the UNA 38. For the UNA 39, this is not possible. To type. replace, proceed as follows:  If necessary, remove the socket wrench.

  • Page 31: Troubleshooting

    Troubleshooting Problem Cause Remedy The equipment is blowing off The control unit is damaged or Replace the control unit. live steam. worn. The equipment is blowing off Dirt deposits, precipitated solids If fitted, operate the float-lifting lever. live steam. or foreign particles have Clean the pipes.
  • Page 32 Problem Cause Remedy The discharge capacity is too The pipes do not have a Make sure that the lines run with a low. continuous fall in flow direction. continuous fall in flow direction. Insufficient thermal output of the user. Fluid escapes (equipment is The body has been damaged by Replace the equipment with a new one.

  • Page 33: Putting The Equipment Out Of Operation

    Putting the equipment out of Caution operation Environmental damage may be caused by Removing harmful substances poisonous fluid residues.  Before disposing of the equipment DANGER make sure that it is clean and free of fluid residues. If the equipment is used in contaminated ...

  • Page 34: Re-Using Equipment After Storage

    CAUTION Risk of injuries if the equipment falls down.  When removing the equipment make sure the it is safely held in place and cannot fall down. Suitable measures are for instance:  Equipment that is not too heavy may be supported by a second person.

  • Page 35: Disposing Of The Equipment

     For the disposal of all materials observe the pertinent legal regulations concerning waste disposal. The equipment is made from the following materials: Materials for UNA 38 Component ASTM Body 1.5415 A182-F1 Flange, butt-weld end, socket weld end 1.5415...

  • Page 36: Technical Data

    Technical data Dimensions and weights Dimensions and weights for UNA 38 Remember to add an additional 30 mm (1.2 in) and 100 mm (3.9 in) as service dimensions when a manual vent valve is fitted.
  • Page 37 Type of DN 15 DN 20 DN 25 DN 40 DN 50 connection (½") (¾") (1") (1½") (2") Installed length L [mm (in)] Flange 300 (11.8) 300 (11.8) 300 (11.8) 420 (16.5) 416 (16.4) PN100 ASME class 300 (11.8) 300 (11.8) 300 (11.8) 421 (16.6) 427 (16.8) 600 flanges Socket weld 300 (11.8) 300 (11.8) 300 (11.8) 420 (16.5) 420 (16.5)
  • Page 38 Dimensions and weights for UNA 39...
  • Page 39 Type of DN 15 DN 25 DN 40 DN 50 connection (½") (1") (1½") (2") L1 [mm (in)] Flange PN160 215 (8.5) 230 (9.1) 235 (9.3) 245 (9.6) ASME class 240 (9.4) 250 (9.8) 260 (10.2) 280 (11.0) 900/1500 flanges Butt-weld end 170 (6.7) 170 (6.7)

  • Page 40: Pressure & Temperature Ratings

    All equipment specific values are indicated on the nameplate. Pressure and temperature ratings of UNA 38, with PN 100 flange, socket weld end, weld end Pressure [barg] 85.7 35.2...
  • Page 41 Pressure and temperature ratings for UNA 38 high temperature, with PN 100 flange Pressure [barg] 83.7 51.2 32.4 Temperature [°C] -10/20 Maximum admissible [bar] 50, 64, 80 differential pressure ∆PMX [psi] 725, 928, 1160 Pressure [psig] 1450 1450 1450 1214 Temperature [°F]...
  • Page 42 Pressure and temperature ratings for UNA 38 high temperature, with socket weld end, weld end Pressure [barg] 83.7 51.2 32.4 Temperature [°C] -10/20 Maximum admissible [bar] 50, 64, 80 differential pressure ∆PMX [psi] 725, 928, 1160 Pressure [psig] 1450 1450...
  • Page 43 Pressure and temperature ratings for UNA 39, with ASME class 900 flange Pressure [barg] 84.6 64.5 41.8 33.6 Temperature [°C] -10/100 Maximum admissible [bar] 80, 110, 140 differential pressure ∆PMX [psi] 1160, 1595, 2030 Pressure [psig] 2248 1697 1227 Temperature [°F] 14/212 1004...
  • Page 44 Orifice and differential pressure Orifice (AO) Hole diameter [mm] Differential pressure UNA 38 UNA 39 ∆PMX [bar] – – 80 MAX – – – 140 MAX –...

  • Page 45: Manufacturer's Declaration

    Assessment according to European rules refer to our Declaration of Conformity or our Declaration by Manufacturer. To download the current Declaration of Conformity or Declaration by Manufacturer go to www.gestra.com/documents or contact: GESTRA AG Münchener Straße 77 28215 Bremen Germany...
  • Page 48 Agencies all over the world: www.gestra.de GESTRA AG Münchener Straße 77 28215 Bremen Germany Telefon +49 421 3503-0 Telefax +49 421 3503-393 E-Mail info@de.gestra.com www.gestra.de 818603-03/07-2017 kx_mm (808710-02) © GESTRA AG Bremen Printed in Germany...

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Una 39

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