Lauda Alpha Operating Instructions Manual
  1. Manuals
  2. Brands
  3. Lauda Manuals
  4. Thermostat
  5. Alpha
  6. Operating instructions manual

Lauda Alpha Operating Instructions Manual

Heating and cooling thermostats
Hide thumbs Also See for Alpha:
Table of Contents

Advertisement

Quick Links

Operatin g instr u ctions
Alph a
Heating and cooling thermostat s
Read this manual prior to performing any task!

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Alpha and is the answer not in the manual?

Questions and answers

Related Manuals for Lauda Alpha

Summary of Contents for Lauda Alpha

  • Page 1 Operatin g instr u ctions Alph a Heating and cooling thermostat s Read this manual prior to performing any task!
  • 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 Q4WA-E_13-004-EN 97922 Lauda-Königshofen Translation of the original operating instructions...

  • Page 5: Prefixed Safety Notes

    Carefully read the instructions and follow them accurately! Disregarding the instructions may have serious consequences, such as damage to the equipment, damage to property or injury to personnel. Product specifications are subject to change without notice! 09/2020 j Alpha 5 / 54...

  • Page 6: Table Of Contents

    EF ........................... 31 ESTORING WORKS SETTINGS D 7.10 S Y ................................... 32 TANDBY 7.11 S ................................32 AFETY FUNCTIONS 7.11.1 Safety functions and removal ............................ 32 7.11.2 Overtemperature and low level protection ......................33 6 / 54 Alpha 09/2020 j...
  • Page 7 This sign is used where there may be injury to personnel if a recommendation is not followed accurately or is disregarded.  Note Here special attention is drawn to some aspect. May include reference to danger.  Reference Refers to other information in different sections. 09/2020 j Alpha 7 / 54...

  • Page 8: Safety Notes

    Heating and cooling DIN EN 61326-1 CISPR 11 100 A thermostats Type 1 in accordance Emissions Class B Alpha Rest of the world (outside EU) with in accordance with No limitation DIN EN 61326-1 CISPR 11 Valid for the USA: Instructions for Class A digital devices “This equipment has been tested and found to comply with the limits for Class A digital device, pursuant to Part 15 of...

  • Page 9: Other Safety Notes

    Connect the unit only to grounded mains power (PE).  Parts of bath covers (types Alpha RA xx) may reach surface temperatures above 70 °C when operating at higher  temperatures. Take care when touching the device!  Danger of burns! Use suitable hoses (...

  • Page 10: Brief Operating Instructions

    On warning or error message refer section ( 7.11).  The overtemperature cut-out point is fixed at 105 °C and cannot be changed. SAFE However, you can adjust a minimum and maximum operation temperature of the thermostat ( 7.6). 10 / 54 Alpha 09/2020 j...
  • Page 11 “Enter” pressed for longer than 3 seconds sets back to default: (3 sec.) SEt = 25 °C; Hi = 105 °C; Lo = -30 °C; Cool= Auto. End of menu ( 7.9) E n d 09/2020 j Alpha 11 / 54...

  • Page 12: Control And Functional Elements

    Control and functional elements Alpha immersion thermostat 1 Temperature controller with four segment LED display 2 Heater active (yellow LED is lit) Cooler active (blue LED is lit) Error signal (red LED is flashing) 3 Menu functions, select and Enter keys...
  • Page 13 1 Reset button (press only if the display shows SAFE 2 Cooler cable 3 Rating label 4 Mains cable 5 Screw clamp 09/2020 j Alpha 13 / 54...
  • Page 14 1 Control head with clamp 2 Bath vessel 3 Four mounting feet 14 / 54 Alpha 09/2020 j...
  • Page 15 Alpha Cooling Thermostat AlphaRA12 _Front neu 1 Control head 2 Pump connections: return to bath and pump outflow 3 Bath cover 4 Handle on front and back 5 Removable front cover 6 Grille on both sides 7 Four mounting feet...
  • Page 16 1 Mains cable 2 Rating label 3 Cooler cable 4 Bath drain nozzle 16 / 54 Alpha 09/2020 j...

  • Page 17: Unit Description

    Pollution degree: 2. Types of unit The type designation of the Alpha thermostats consists of the letter A or RA (R for identification as low-temperature unit = cooling thermostat). The immersion thermostat Alpha (control head) and the type of bath or the refrigeration system respectively.

  • Page 18: Materials

    All heating types A 6, A 12 and A 24 are not supplied with bath covers. Cooling coil, bath cover and external circulation set can be ordered as accessory ( 9). A pump outflow reducer avoids to spill over liquid in small baths (A 6, RA 8, A 12, RA 12). 18 / 54 Alpha 09/2020 j...

  • Page 19: Unpacking

    (expeditor); a notification to the freight forwarder (expeditor) is obligatory so that the shipment can be examined. Please also inform the LAUDA Service ( 8.5).

  • Page 20: Preparations

    Fix the cooling coil set at the bottom of the control head by means of the two screws (pan head with cross recess). The cooling coil set belongs to the left side of the head. 20 / 54 Alpha 09/2020 j...
  • Page 21 Keep clear distance of at least 40 cm. Pump connection link (silicone rubber) Remove the silicone L-tube at the pump housing to improve the circulation in the bath. L-tube (silicone rubber) Operation with external consumer (circulation thermostat ( 6.4)) 09/2020 j Alpha 21 / 54...
  • Page 22 When starting up the refrigeration system after a longer time, it can take up to 30 minutes, de-  pending on the ambient temperature and the unit type, until the nominal refrigerating capacity is reached. 22 / 54 Alpha 09/2020 j...

  • Page 23: Filling And Emptying

    When connecting an external consumer take care of the heat transfer liquid level for it must not  decrease too much  fill in heat transfer liquid if necessary. Do not drain the heat transfer liquid when it is hot or very cold (below 0 °C)!  09/2020 j Alpha 23 / 54...

  • Page 24: Heat Transfer Liquids And Hoses

    Temperature Catalogue Tubing type Application [mm] range °C number EPDM-tubing, for all LAUDA heat transfer liquids 9 x 2 10 – 90 RKJ 111 non-insulated except for Ultra 350 and mineral oils EPDM-tubing, for all LAUDA heat transfer liquids 12 x 2 10 –...
  • Page 25 , 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 26: Connection Of External Circuits

     danger of flooding the thermostat! Protect tubing with hose clips against slipping off!!   When no external consumer is connected to the thermostat, the pump outflow connection must be linked to the return (pump connection link). 26 / 54 Alpha 09/2020 j...

  • Page 27: Starting Up

    The current bath temperature is shown on the display.  Bath temperature 2 % 3   If necessary add more heat transfer liquid to replace the amount pumped out to the external circuit. 09/2020 j Alpha 27 / 54...

  • Page 28: General Key Functions And Pilot Lamps

    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; Enter Key  saves input, display ceases to flash and menu point is left.

  • Page 29: Temperature Setpoint Setting Se T

    You then proceed to Main Menu “Bath Temperature”: A blinking point indicates that the timer is running!!   No change is done without confirmation by <Enter>!  You can deactivate the timer any time by setting the value “00.00”. 09/2020 j Alpha 29 / 54...

  • Page 30: Defining Temperature Limits H I And L O

     The selected mode is displayed flashing. Wait 4 seconds or  Display flashes 4 s  new selection is automatically accepted,  it is immediately accepted with the <Enter> key. 30 / 54 Alpha 09/2020 j...

  • Page 31: Offset For The Internal Temperature Probe Cal

    Calibration should only be activated if a sufficiently accurate temperature measurement device is available as reference. If, during checking with a calibrated reference thermometer, (for example from the LAUDA DigiCal Series), a devia- tion 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 32: Standby Stby

    When an error occurs switch off the device. If the error is always present after switching on the device, please inform the LAUDA Service ( 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 re- move the message.

  • Page 33: 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 or the local service organization.  Refill the heat transfer liquid ( 6.2).

  • Page 34: Unlock The Overtemperature Protection

     Find the cause of the fault. Perhaps the viscosity of the heat transfer liquid is too high or the pump is blocked.  Rectify cause of fault.  Press the <Enter> key.  Also press this key if the unit has been switched off in the fault state. 34 / 54 Alpha 09/2020 j...

  • Page 35: Fault List "Alarms And Errors

     pull out the mains plug!  Have the unit checked by the LAUDA Service or the local service organisation!  The heater surface can reach temperatures up to 250 °C when there is not enough liquid in the bath  Danger of burning injuries. Use only non-flammable liquids, otherwise  Danger of...

  • Page 36: Maintenance

    Heat transfer system Sealing Daily External visual inspection External hoses Material fatigue Monthly External visual inspection Cooling unit Condenser cleaning ( 8.2.3) Cooling thermostat Electronics Over temperature protection ( 7.11.3) Low level protection testing ( 7.11.3) 36 / 54 Alpha 09/2020 j...

  • Page 37: Testing The Heat Transfer Liquid

    Note on repair If you need to send in a unit for repair, it is essential to first contact the LAUDA Service ( 8.5).   If the equipment has to be returned to the factory, please ensure that it is packed carefully and properly.

  • Page 38: Disposal Of Refrigerant

    The refrigerant must be disposed of in accordance with regulation 2015/2067/EU in combination with regulation 517/2014/EU. 8.4.2 Disposal of packaging The packaging must be disposed of in accordance with EU Directive 94/62/EC. 38 / 54 Alpha 09/2020 j...

  • Page 39: Ordering Spares And Rating Label

    When ordering spares please quote instrument type and serial number from the rating label. This avoids queries and sup- ply of incorrect items. 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

    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...
  • Page 41 A 24 and RA 24 0 – 135 °C All racks are delivered without test tubes. For further accessories please refer to our Accessories Catalog or contact us directly ( 8.5). 09/2020 j Alpha 41 / 54...

  • 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 ...
  • Page 43 Alpha Immersion Thermostat Working temperature range °C 25 – 100 Operating temperature range °C -25 – 100 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)
  • Page 44 Alpha Heating and Cooling Thermostats A 12 A 24 RA 8 RA 12 RA 24 Working temperature range °C 25 – 100 -25 – 100 Operating temperature range °C -25 – 100 -25 – 100 Cooling capacity (eff.), 20 °C ethanol @ 20 °C am-...
  • Page 45 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! 09/2020 j Alpha 45 / 54...
  • Page 46 Pump characteristics Alpha Immersion Thermostat measured with water Heating up curves from Alpha A 6, A 12 and A 24 (230 V~) (@ 230 V~) 46 / 54 Alpha 09/2020 j...
  • Page 47 Cooling characteristics Alpha RA 8, RA 12 and RA 24 (230 V~) (@ 230 V~) 09/2020 j Alpha 47 / 54...

  • Page 48: Copyright

    Violation of this may obligate the violator to the payment of damages. Other claims reserved. We point out that the designations and brand names of the respective companies used in the manual are generally subject to trademark, brand and patent protection. 48 / 54 Alpha 09/2020 j...

  • Page 49: Index

    Filling quantity ..............45 SAFE Overtemperature alarm .......... 33 Self-test................27 GWP ................... 45 Service intervals ..............36 SEt..................29 Setting of numerical values ..........28 Spares ................. 39 Heat transfer liquid, Testing ..........37 09/2020 j Alpha 49 / 54...
  • Page 50 Standby ................32 minimum temperature ..........30 StbY .................. 32 UK plugs ................27 Temperature Limit temperature ............30 maximum temperature ..........30 Warnings ................32 50 / 54 Alpha 09/2020 j...
  • Page 51 09/2020 j Alpha 51 / 54...
  • Page 52 52 / 54 Alpha 09/2020 j...
  • Page 53 Product Returns and Clearance Declaration Product Returns Would you like to return a LAUDA product you have purchased to LAUDA? For the return of goods, e.g. for repair or due to a complaint, you will need the approval of LAUDA in the form of a Return Material Authorization (RMA) or processing number.
  • Page 54 54 / 54 Alpha 08/2020 i...
  • Page 56 LAUDA DR. R. WOBSER GMBH & CO. KG Pfarrstraße 41/43 ◦ 97922 Lauda-Königshofen ◦ Germany Tel.: +49 (0)9343 503-0 ◦ Fax: +49 (0)9343 503-222 E-mail: info@lauda.de ◦ Internet: www.lauda.de...

This manual is also suitable for:

Alpha aAlpha a6Alpha a12Alpha a24Alpha ra8Alpha ra12 ... Show all

Table of Contents

Save PDF