Lauda Alpha A Operating Instructions Manual
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Lauda Alpha A Operating Instructions Manual

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Summary of Contents for Lauda Alpha A

  • Page 1 LAUDA Alpha...
  • Page 3 A 6, A 12, A 24 Cooling Thermostats RA 8, RA 12, RA 24 Read the instructions prior to performing any task! LAUDA DR. R. WOBSER GMBH & CO. KG Pfarrstraße 41/43 YACE0092 97922 Lauda-Königshofen Translation of the original operating instructions...

  • Page 5: Prefixed Safety Notes

    Alpha Prefixed safety notes Before operating the equipment please read carefully all the instructions and safety notes. If you have any questions please phone us! Follow the instructions on setting up, operation etc. This is the only way to avoid in- correct operation of the equipment and to ensure full warranty protection.

  • Page 6: Table Of Contents

    Alpha Table of content Prefixed safety notes ............................. 5 Table of content ............................. 6 SAFETY NOTES ............................8 .......................... 8 ENERAL SAFETY NOTES ..........................9 THER SAFETY NOTES BRIEF OPERATING INSTRUCTIONS ....................... 10 CONTROL AND FUNCTIONAL ELEMENTS ..................... 12 UNIT DESCRIPTION ........................... 16 .........................
  • Page 7 Alpha ............................35 AINTENANCE 8.2.1 Service intervals ..........................35 8.2.2 Testing the heat transfer liquid ...................... 36 8.2.3 Maintenance of the refrigeration unit ..................... 36 ..................... 37 OTE ON REPAIR AND CHANGING THE FUSE ......................... 38 ISPOSAL INFORMATION 8.4.1 Disposal of refrigerant ........................38 8.4.2 Disposal of packaging ........................

  • Page 8: Safety Notes

    Alpha 1 Safety notes General safety notes The units are designed for operation with non-flammable liquids to DIN EN 61010-2-010. A laboratory thermostat is intended for heating, cooling and pumping liquids according to the needs of the user. This leads to hazards by high or low temperatures, fire, and the general hazards due to the applica- tion of electrical energy.

  • Page 9: Other Safety Notes

    Alpha Other safety notes  Check the device carefully for shipping damage before putting into operation. Never start a damaged device!  Only technically qualified personnel must operate the equipment!  Connect the unit only to grounded mains power (PE). ...

  • Page 10: Brief Operating Instructions

    Alpha 2 Brief operating instructions This brief instruction shall give you the possibility to operate the unit quickly. For safe opera- tion of the unit it is absolutely necessary to read all the instructions and safety notes careful- 1. Assemble unit and add items as appropriate ( 6). 2.
  • Page 11 Alpha Display flashes. Set Setpoint Bath temperature Setpoint with . Value is accept- ed after 4 seconds 2 % 3 S E t or proceed immediately with the key: ( 7.5) Standard blinking in timer mode) Flashing display “00.00” (preset) for inactive timer or Timer “Auto Shut Down”...

  • Page 12: Control And Functional Elements

    Alpha 3 Control and functional elements Alpha immersion thermostat 1 Mains switch 2 Temperature controller with four segment LED display 3 Heater active (yellow LED is lit) 4 Cooler active (blue LED is lit) 5 Error signal (red LED is flashing) 6 Menu functions, select and Enter keys 7 Tubular heater 8 Temperature probe Pt100...
  • Page 13 Alpha Alpha Cooling Thermostat 1 Pump connections: return to bath and pump outflow 2 Bath cover 3 Handle on front and back 4 Removable front cover (Rating label behind front cover ( 8.5)) 5 Grille on both sides 6 Four mounting feet Control and functional elements June 20, 2018/ YACE0092...
  • Page 14 Alpha SAFE 1 Reset button (press only if the display shows 2 Rating label 3 Cooler cable 4 Bath drain nozzle 5 Mains cable Control and functional elements June 20, 2018/ YACE0092...
  • Page 15 Alpha A 12 A 24 RA 8 RA 12 RA 24 Control and functional elements June 20, 2018/ YACE0092...

  • Page 16: Unit Description

    Alpha 4 Unit description Environmental conditions The operation of the thermostats is only allowed under the following conditions as specified in DIN EN 61010-2-010:2003 and DIN EN 61010-1:2001:  Indoor use.  Operation of the device up to an altitude of 2000 m above sea level. ...

  • Page 17: Materials

    Alpha Materials All parts being exposed to the heat transfer liquid are made of high quality material appropriate to the op- erating temperature. Non-rusting stainless steel and high quality temperature-resistant materials are be- ing used. Temperature indication, control and safety circuit The units are equipped with a 4-character LED display, which is used for the display of the measure- ments and settings, as well as the operating status.

  • Page 18: Unpacking

    If there is any damage visible on the unit, a claim must be filled in writing with the freight for- warder (expeditor); a notification to the freight forwarder (expeditor) is obligatory so that the shipment can be examined. Please also inform the LAUDA Service Constant Temperature Equipment ( 8.5). Standard accessories: Catalogue No.

  • Page 19: Preparations

    Alpha 6 Preparations Assembly and Setting Up Do not connect with power mains before assembly and setup is complete!! Place the unit on a flat surface. If necessary, attach the appropriate pump outflow reducer R onto the pump nozzle. In small baths use the pressure reducer to prevent any splashing of heat transfer liquid.
  • Page 20 Alpha Carefully attach the immersion thermostat to prevent it dropping into the bath. If this should occur during operation, never reach into the bath! Withdraw the mains plug immediately!  Hang the thermostat into the bath and fix the clamp with the knurled screw on the edging of the bath.
  • Page 21 Alpha  When operating as bath thermostat without external consumer the pump outflow connection has to be linked to the return. At bath temperature above 70 °C the label supplied must be affixed on the bath at clearly visible position! ...

  • Page 22: Filling And Emptying

    Alpha Filling and Emptying Filling  Close the drain nozzle.  Fill baths up to a maximum level of 20 mm below the bath bridge.  Optimum operation at 20 – 40 mm below the bath bridge.  Operation is possible down to 70 mm below the bath bridge.

  • Page 23: Heat Transfer Liquids And Hoses

    , sodium carbonate) per liter of water. LAUDA Alpha thermostats can be operated ideally with LAUDA Aqua 90, available in container sizes of 5, 10 or 20 liters (order number LZB 120, LZB 220 or LZB 320) or with Kryo 30 ( 6.3).

  • Page 24: Connection Of External Circuits

    Avoid the use of this type of rack or the direct contact with this sort of rack or contact with non-ferrous metal samples and the inside of the container. Use original LAUDA stainless steel racks and com- mercially available racks in temperature-resistant plastics!

  • Page 25: Starting Up

    Alpha Starting up Connection to the supply Compare the supply voltage with the data on the rating label (rearside on control head).  Connect the unit only to a grounded mains power socket (PE).  No warranty when the thermostat is connected to a wrong supply! ...

  • Page 26: General Key Functions And Pilot Lamps

    Alpha General key functions and pilot lamps Your Alpha Thermostat is easy to operate.  Switch from the current bath temperature display to the main menu;  activates input, display flashes;  saves input, display ceases to flash and menu point is Enter Key left.

  • Page 27: Main Menu Structure

    Alpha Main menu structure Current bath temperature Set setpoint ( 7.5) Timer, AutoShutDown ( 7.6) Maximum Temperature ( 7.7) Minimum Temperature ( 7.7) CooL Configure refrigeration system ( 7.8) Calibrate offset probe ( 7.9) Factory default settings ( 7.10) End of menu Starting up June 20, 2018/ YACE0092...

  • Page 28: Temperature Setpoint Setting Se T

    Alpha Temperature setpoint setting The setpoint is the temperature, which the thermostat should reach and maintain constant.  Press key to show (Setpoint).  Press, display flashes.  Decrement or increment the Temperature Setting ( 7.3). (Temperature can be set from -25 °C up to 100 °C depending on limits Hi and Lo).

  • Page 29: Defining Temperature Limits H I And L O

    Alpha Defining temperature limits With this function, it is possible to define a minimum and a maximum temperature in which the thermo- stat controls. By reaching the temperature limits, a warning appears. In this way setpoint input can be prevented which may damage the heat transfer medium or the apparatus. For example, if water is used as the heat transfer liquid, 95 °C would be practicable as the maximum temperature and 5 °C as the minimum temperature.

  • Page 30: Offset For The Internal Temperature Probe Cal

    Calibration should only be activated if a sufficiently accurate temperature measurement device is availa- ble as reference. If, during checking with a calibrated reference thermometer, (for example from the LAUDA DigiCal Se- ries), a deviation is found, then the offset (i.e. the additive part of the characteristic) of the internal measuring chain can be adjusted with the following function.

  • Page 31: Standby Stby

    Errors: When an error occurs switch off the device. If the error is always present after switching on the device, please inform the LAUDA Service Constant Temperature Equipment ( 8.5) or the local service organisation! Find cause of alarm, warning or error and rectify where necessary. Then press on the control head in order to remove the message.

  • Page 32: Overtemperature And Low Level Protection

     If it takes more then 45 seconds for the overtemperature protection to get triggered immediately cut out the power manually and have the equipment checked by the LAUDA Service Constant Tempera- ture Equipment or the local service organization.  Refill the heat transfer liquid ( 6.2).

  • Page 33: Unlock The Overtemperature Protection

    Alpha 7.12.4 Unlock the overtemperature protection  Switch off the thermostat, pull out the mains plug!  To unlock the protection, push the reset knob inside the Alpha (behind the marked hole, refer to the image). You can use for example a pen. ...

  • Page 34: Fault List "Alarms And Errors

    If there is any irregularity when testing the safety devices, switch off the unit imme- diately and pull out the mains plug!  Have the unit checked by the LAUDA Service Constant Temperature Equipment or the local service organisation!  The heater surface can reach temperatures up to 250 °C when there is not enough liquid in the bath ...

  • Page 35: Maintenance

    In case of doubt please contact the manufacturer. Maintenance  Before any maintenance and repair work pull out the mains plug!  Repairs on the control unit must only be carried out by properly qualified personnel! LAUDA thermostats are largely maintenance-free. 8.2.1 Service intervals System part...

  • Page 36: Testing The Heat Transfer Liquid

    Alpha 8.2.2 Testing the heat transfer liquid If the heat transfer liquid becomes contaminated, it has to be replaced ( 6.2 and 6.3). If required, the heat carrier should be checked for capability for use (for example when changing the method of operation), or at least half-yearly.

  • Page 37: Note On Repair And Changing The Fuse

      If the equipment has to be returned to the factory, please ensure that it is packed care- fully and properly. LAUDA accepts no responsibility for damage due to unsatisfactory packing.  Before opening the control head, pull out the mains plug! ...

  • Page 38: Disposal Information

    Alpha Disposal information The following applies to Europe: The disposal of the device is regulated by EU Directive 2012/19/EU (WEEE Waste of Electrical and Electronic Equipment). 8.4.1 Disposal of refrigerant The type and filling quantity of the refrigerant can be read on the unit or on the rating plate. Repair and disposal only through a qualified refrigeration engineer! The refrigerant must be disposed of in accordance with regulation 2015/2067/EU in combination with regulation 517/2014/EU.

  • Page 39: Ordering Spares And Rating Label

    The rating label of cooling thermostats is placed behind the front cover. Rating label at immersion/heating thermostats Contact LAUDA Service Constant Temperature Equipment in the following cases:  In the event of faults on the machine  For spare part orders ...

  • Page 40: Accessories

    Alpha 9 Accessories Accessories for Class Alpha thermostats Catalogue Description suitable for number Cooling coil set for all heating thermostats LCZE 004 External circulation set for all heating thermostats LCZE 005 Bath cover LCZE 006 Bath cover A 12 LCZE 007 Bath cover A 24 LCZE 008...
  • Page 41 Alpha PP white, Rack for 90 tubes, 250 mm x 100 mm two racks fit in each of RA 12 UE 037 d = 13 mm x 65 mm, three racks fit in each of A 24 and RA 24 0 –...

  • Page 42: Technical Data And Diagrams

    The device complies with the basic health and safety requirements outline in the Directives listed below.  Machinery Directive 2006/42/EC  EMC Directive 2014/30/EU LAUDA DR. R. WOBSER GMBH & CO. KG – Pfarrstraße 41/43 - 97922 Lauda-Königshofen - Germany  The device does not fall under Pressure Equipment Directive 2014/68/EU because the device is only classified as high as Cate- gory 1 and is covered by the Machinery Directive.
  • Page 43 Alpha Alpha Immersion Thermostat 25 – 100 Working temperature range °C -25 – 100 Operating temperature range °C Pump flow L/min Pump pressure Bath volume up to 50 Connections for cooling coil (accessory) Nipples 11.7 mm external diameter Overall dimensions (W x D x H) 125 x 150 x 300 Weight Ingress protection rating...
  • Page 44 Alpha Alpha Heating and Cooling Thermostats A 12 A 24 RA 8 RA 12 RA 24 25 – 100 -25 – 100 Working temperature range °C -25 – 100 -25 – 100 Operating temperature range °C Cooling capacity 20 °C (eff.), ethanol @ 10 °C 20 °C ambient tem-...
  • Page 45 Alpha Refrigerant and filling quantity The cooling thermostat contains fluorinated greenhouse gases. Units RA 8 RA 12 RA 24 Refrigerant R-134a R-134a R-134a maximum filling quantity 0.11 0.13 0.17 1430 1430 1430 (100a) equivalent  Global Warming Potential (GWP), Comparison CO = 1,0 * Time span 100 years - according to IPCC IV Product specifications are subject to change without notice!
  • Page 46 Alpha Heating up curves from Alpha A 6, A 12 and A 24 (230 V~) (@ 230 V~) Cooling characteristics Alpha RA 8, RA 12 and RA 24 (230 V~) (@ 230 V~) Technical data and diagrams June 20, 2018/ YACE0092...

  • Page 47: Index

    Alpha 11 Index Lo ................. 29 Low level protection ..........32 Low level Protection testing ......... 32 Accessories ............40 Standard accessories ........18 Alarms ..............31 Maintenance ............35 ASd ............... 28 Automatic Shut-Down Timer ........ 28 Overtemperature cut-off ........32 Baths ..............
  • Page 48 Alpha intentionally left blank June 20, 2018/ YACE0092...
  • Page 49 / Personne responsable Hiermit bestätigen wir, daß nachfolgend aufgeführtes LAUDA-Gerät (Daten vom Typenschild): We herewith confirm that the following LAUDA-equipment (see label): Par la présente nous confirmons que l’appareil LAUDA (voir plaque signalétique): Serien-Nr. Type / Type Serial no. / No. de série:...
  • Page 52 LAUDA DR. R. WOBSER GMBH & CO. KG P.O. Box 12 51 · 97912 Lauda-Koenigshofen · Germany Phone: +49 9343 503-0 · Fax: +49 9343 503-222 E-mail: info@lauda.de · Internet: www.lauda.de...

This manual is also suitable for:

Alpha a 6Alpha a 12Alpha a 24Alpha ra 8Alpha ra 12Alpha ra 24

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