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Alpha

09/2020 j

Technical data and diagrams

The figures have been determined according to DIN 12876.

Common technical data of Alpha Thermostats

Ambient temperature range

°C

5 – 40

Humidity

Maximum relative humidity 80 % for temperatures up to 31 °C,

decreasing linearly to 50 % relative humidity at 40 °C

Storage temperature range

°C

-50 – 70

Temperature stability at 37 °C

±0.05

Display & setting resolution

°C

0.1

Pump type / number of pump steps

Pressure pump / 1

Connections for consumers
(accessory)

---

Nipples ½”, 12.7 mm external diameter

Heater power
230 V; 50/60 Hz
115 V; 60 Hz
100 V; 50/60 Hz

kW
kW
kW

1.5

1.15

1.0 (



7.1)

Least mains fuse protection
230 V~
115 V~
100 V~

A
A
A

12
15
15

Safety Class

---

1/NFL* according to DIN 12876

Protection class

---

Protection class l according to DIN EN 61140; VDE 0140-1

*NFL non-flammable liquids

Product specifications are subject to change without notice!

EU conformity

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 Category 1 and is covered by the Machinery Directive.

Содержание Alpha

Страница 1: ...Operating instructions Alpha Heating and cooling thermostats Read this manual prior to performing any task ...

Страница 2: ......

Страница 3: ...7922 Lauda Königshofen Germany release 09 2020 j Telephone 49 0 9343 503 0 Fax 49 0 9343 503 222 E mail info lauda de Internet http www lauda de Operating instructions Alpha Immersion Thermostat A Heating Thermostats A 6 A 12 A 24 Cooling Thermostats RA 8 RA 12 RA 24 Read the instructions prior to performing any task ...

Страница 4: ......

Страница 5: ...thout a proper heat transfer liquid Never operate the equipment without sufficient water or heat transfer liquid level Do not start up the equipment if it is damaged or leaking the supply cable is damaged Switch off the equipment and pull out the mains plug for servicing or repair before moving the equipment Drain the bath before moving the equipment Have the equipment serviced or repaired by prop...

Страница 6: ...ING 19 6 PREPARATIONS 20 6 1 ASSEMBLY AND SETTING UP 20 6 2 FILLING AND EMPTYING 23 6 3 HEAT TRANSFER LIQUIDS AND HOSES 24 6 4 CONNECTION OF EXTERNAL CIRCUITS 26 7 STARTING UP 27 7 1 CONNECTION TO THE SUPPLY 27 7 2 SWITCHING ON 27 7 3 GENERAL KEY FUNCTIONS AND PILOT LAMPS 28 7 4 TEMPERATURE SETPOINT SETTING SET 29 7 5 AUTOMATIC SHUTDOWN TIMER ASD 29 7 6 DEFINING TEMPERATURE LIMITS HI AND LO 30 7 7...

Страница 7: ...igeration unit 37 8 3 NOTE ON REPAIR 37 8 4 DISPOSAL INFORMATION 37 8 4 1 Disposal of refrigerant 38 8 4 2 Disposal of packaging 38 8 5 ORDERING SPARES AND RATING LABEL 39 9 ACCESSORIES 40 10 TECHNICAL DATA AND DIAGRAMS 42 11 COPYRIGHT 48 12 INDEX 49 CONFIRMATION Explanation of symbols Caution This sign is used where there may be injury to personnel if a recommendation is not followed accurately o...

Страница 8: ... 1 Emissions Class B in accordance with CISPR 11 Only for EU Domestic connection value 100 A Type 1 in accordance with DIN EN 61326 1 Emissions Class B in accordance with CISPR 11 Rest of the world outside EU No limitation 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 t...

Страница 9: ...rculation thermostat failure of hoses may lead to leaking of hot heat transfer liquid and become a danger to personnel and objects When no external consumer is connected to the thermostat the pump outflow must be linked to the return The units are designed for operation with non flammable liquids to DIN EN 61010 2 010 only Depending on the heat transfer liquid used and the mode of operation it is ...

Страница 10: ...3 Cooling thermostats Fill the bath with proper glycol water mixture 6 3 The units are designed only for operation with non flammable liquids to DIN EN 61010 2 010 Take care of the level of the heat transfer liquid 6 2 3 Connect the unit only to a socket with a protective earth PE connection Compare the information on the rating label with the supply details 4 4 Switch the unit on with the front s...

Страница 11: ...iate status Standby Activate timer by setting the Auto Shut Down Delay hh mm with or Deactivate timer by setting 00 00 The setting is accepted only by pressing the key Bath temperature 2 3 Display flashes Set Setpoint with or Value is accepted after 4 seconds or proceed immedi ately with the key Maximum Temperature Hi Minimum Temperature Lo Configure Refrig System Cool l Offset probe CAL Settings ...

Страница 12: ...troller 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 4 Mains switch 5 Screw clamp 6 Tubular heater 7 Temperature probe Pt100 8 Pump outflow with pump outflow reducer 8 1 2 3 4 5 6 7 ...

Страница 13: ...09 2020 j Alpha 13 54 1 Reset button press only if the display shows SAFE 2 Cooler cable 3 Rating label 4 Mains cable 5 Screw clamp 1 2 3 4 5 ...

Страница 14: ...14 54 Alpha 09 2020 j 1 Control head with clamp 2 Bath vessel 3 Four mounting feet 1 2 3 ...

Страница 15: ... 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 1 2 3 4 5 6 7 ...

Страница 16: ...16 54 Alpha 09 2020 j 1 Mains cable 2 Rating label 3 Cooler cable 4 Bath drain nozzle 1 2 3 4 ...

Страница 17: ...and the type of bath or the refrigeration system respectively Examples RA 8 Immersion thermostat Alpha control head and refrigeration system with bath of 8 liters maximum volume A 12 Control unit Alpha with bath of 12 liters maximum volume 4 3 Baths All units except the immersion thermostat provide a stainless steel bath The last two digits of the model no corre spond to the approximate total volu...

Страница 18: ...urement Further measurement conditioning occurs using a special control algorithm for controlling the heater actuator and the refrigeration system 4 7 Refrigeration system The refrigeration system consists essentially of a hermetically sealed compressor Heat of condensation and motor heat are dissipated by a fan cooled finned condenser Fresh air is drawn in at the front of the unit warmed air is d...

Страница 19: ... be examined Please also inform the LAUDA Service 8 5 Standard accessories Catalogue No Quantity Designation Q4WA E_13 004 EN 1x Operating instructions for all thermostats UD 425 1x Screw clamp for immersion and for heating thermostats 2x Pump outflow reducer with different hole sizes diameter Ø 4 5 or Ø 6 0 for all thermostats 1x Bath cover RA cooling types only 1x External circulation set RA coo...

Страница 20: ...le In small baths use the pressure reducer to pre vent any splashing of heat transfer liquid Immersion Heating thermostats only Fix the clamp at the bottom of the control head by two screws M4 x 6 A3 1 4541 ISO 7046 recessed countersunk flat heads Accessory cooling coil set 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 ...

Страница 21: ...h into the bath Withdraw the mains plug immediately Cooling thermostats only NEVER overturn the unit and never put it upside down After transport and before starting up store it standing in upright position for two hours if possible Do not cover the ventilation openings Keep clear distance of at least 40 cm Pump connection link silicone rubber Remove the silicone L tube at the pump housing to impr...

Страница 22: ...e operated safely up to an ambient temperature of 40 C Depending on the loading of the refrigeration system a temporary shut off can occur especially in case of an ambient temperature of over 35 C Additionally a higher ambient temperature results in less refrigerating capacity When starting up the refrigeration system after a longer time it can take up to 30 minutes de pending on the ambient tempe...

Страница 23: ... thermostat pull out the mains plug Drain the heat transfer liquid through the drain nozzle using a flexible tube The units are designed for operation with non flammable liquids to DIN EN 61010 2 010 water or glycol water mixture When starting up the unit the tubular heater has to be covered with liquid When connecting an external consumer take care of the heat transfer liquid level for it must no...

Страница 24: ...ise danger of corrosion Water content falls after prolonged operation at higher temperatures mixture becomes flammable flash point 119 C check the mixture ratio with a dosimeter Safety data sheets are available on request Important The units are designed for operation with non flammable liquids to DIN EN 61010 2 010 Hoses Tubing type di x t mm Temperature range C Application Catalogue number EPDM ...

Страница 25: ...r LZB 120 LZB 220 or LZB 320 or with Kryo 30 6 3 There is a risk of electrochemical oxidation with the use of racks of non ferrous metals or non ferrous metal samples The LAUDA Alpha thermostat tanks are produced in stainless steel 1 4301 and are accordingly resistant to mechanical and chemical stresses Due to the different electrochemical potentials of metals electrochemical oxidation may occur i...

Страница 26: ... possible This gives the best flow Connect 9 mm internal diameter tubing to the pump con nector Pump connections return to bath pump outflow or pump pressure side Pump connection link silicone rubber If the cross section of the tubing is too small temperature drop between bath and external system due to low flow rate Increase the bath temperature appropriately Always ensure the maximum possible fl...

Страница 27: ...t time Without external circuit ensure that the pump pressure outflow is linked to the pump return Ensure that the unit is filled in accordance with Section 6 2 Note for electric installation on site The devices must be protected with a 16 ampere circuit breaker fitted during installation Exception Devices with 13 ampere UK plugs 7 2 Switching on 1 s Switch on at the mains switch an acoustic signa...

Страница 28: ... counting position to the left Keys are pressed and held down Moves counting position to the right Switching one place to the right occurs by briefly 1 second releasing the key followed by another pressing of the key or 4 sec Most relevant settings are accepted automatically after ap proximately 4 seconds or the setting is accepted immediately pressing the Enter key and Fault signal Flashing red A...

Страница 29: ...i and Lo are not accepted A buzzer signal appears If necessary first change the temperature limits 7 6 7 5 Automatic Shutdown Timer ASd The automatic Shutdown Timer can be activated deactivated read out or be set At shutdown time the pump heater and compressor are deactivated the display then shows StbY 7 10 1x to ASd Call the Automatic Shut Down Timer ASd Read Timer The display shows 00 00 timer ...

Страница 30: ...using the key Enter the selection The maximum temperature can be set from 35 C to 105 C The minimum temperature can be set from 30 C to 30 C The current temperature limit value is displayed flashing or Set the required temperature limit Wait 4 seconds or Display flashes 4 seconds new value is automatically accepted or By pressing the Enter key the value is accepted immediately 7 7 Refrigeration un...

Страница 31: ...on certificate Only offset values of 5 Kelvin are accepted Switching on the unit the last used CAL value is preloaded again 5x to CAL and 1x longer than 3 seconds Call the option CAL or Display flashes Enter the value of the reference thermometer The selected value is displayed flashing Wait 4 seconds or Display flashes 4 s new value is accepted automatically or value is immediately accepted with ...

Страница 32: ...rms warnings or errors as appropriate All warnings alarms or errors are shown on the LED display Alarms Alarms are safety relevant Components Pump Heater Refrigerating Unit will be shut down 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 8 5 or the local service organisation Find cause of alarm warning ...

Страница 33: ...evel protection testing Every 6 month or before the unit is running unattended for longer periods this protection should be tested Therefore Remove the heat transfer liquid of the thermostat 6 2 Turn on thermostat and set the set temperature to a value a couple degrees above ambient temperature The heater of the thermostat will now start heating Attention the heater will get very hot Don t touch i...

Страница 34: ... pump 1 Alarm sounds as dual tone signal for pump motor overload or blockage 2 Display of PuPsignals blockage 3 The red LED above the fault triangle flashes Heater switches off on both poles Pump and refrigerating unit are switched off electronically Switch off the thermostat pull out the mains plug Find the cause of the fault Perhaps the viscosity of the heat transfer liquid is too high or the pu...

Страница 35: ...ure minimum temperature 7 6 Errors Message on display Meaning E001 Sensor Issue short E002 Sensor Issue open unexpected sensor value If there is any irregularity when testing the safety devices switch off the unit immediately and 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 n...

Страница 36: ...ance 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 If the heat transfer liquid becomes contaminated it has to be replaced 8 2 1 Service intervals System part Frequency Comment Each time of putting into operation and then Complete device External condition of the device Monthly Heat transfer liquid...

Страница 37: ...efrigeration unit operates largely without mainte nance Depending on the ambient dust conditions and the operat ing time any dust on the heat exchanger condenser must be removed at intervals of 2 weeks or longer This is done after taking off the front grille Brush off the condenser and if necessary blow through with compressed air 8 3 Note on repair If you need to send in a unit for repair it is e...

Страница 38: ... 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 8 4 2 Disposal of packaging The packaging must be disposed of in accordance with EU Directive 94 62 EC ...

Страница 39: ...owing cases In the event of faults on the machine For spare part orders In the case of questions about the machine Contact our Sales Department for application specific questions LAUDA Service Phone 49 0 9343 503 350 English and German Fax 0 49 9343 503 283 E mail service lauda de We are available any time for your queries and suggestions LAUDA DR R WOBSER GMBH CO KG Pfarrstraße 41 43 97922 Lauda ...

Страница 40: ...3 mm PP white 250 mm x 100 mm x 65 mm 0 135 C two racks fit in each of RA 12 three racks fit in each of A 24 and RA 24 UE 037 Rack for 60 tubes d 16 mm PP white 250 mm x 100 mm x 65 mm 0 135 C two racks fit in each of RA 12 three racks fit in each of A 24 and RA 24 UE 042 Rack for 40 tubes d 20 mm PP white 250 mm x 100 mm x 65 mm 0 135 C two racks fit in each of RA 12 three racks fit in each of A ...

Страница 41: ...yellow 250 mm x 100 mm x 65 mm 0 135 C two racks fit in each of RA 12 three racks fit in each of A 24 and RA 24 UE 045 Rack for 24 tubes d 25 mm PP yellow 250 mm x 100 mm x 65 mm 0 135 C two racks fit in each of RA 12 three racks fit in each of A 24 and RA 24 UE 046 Rack for 21 tubes d 30 mm PP yellow 250 mm x 100 mm x 65 mm 0 135 C two racks fit in each of RA 12 three racks fit in each of A 24 an...

Страница 42: ...60 Hz 115 V 60 Hz 100 V 50 60 Hz kW kW kW 1 5 1 15 1 0 7 1 Least mains fuse protection 230 V 115 V 100 V A A A 12 15 15 Safety Class 1 NFL according to DIN 12876 Protection class Protection class l according to DIN EN 61140 VDE 0140 1 NFL non flammable liquids Product specifications are subject to change without notice EU conformity The device complies with the basic health and safety requirements...

Страница 43: ...e L up to 50 Connections for cooling coil accessory Nipples 11 7 mm external diameter Overall dimensions W x D x H mm 125 x 150 x 300 Weight kg 3 5 Ingress protection rating IP Code according to IEC 60529 IP 20 Power supply Power consumption 230 V 10 50 60 Hz kW 1 5 115 V 10 60 Hz kW 1 2 100 V 10 50 60 Hz kW 1 0 Product specifications are subject to change without notice ...

Страница 44: ...ner tank in stainless steel 1 4301 conforming to SAE 30304 AISI 304 Housing Powder coated steel sheet Feet Four mounting feet Bath opening W x D with Head mm 145 x 161 235 x 161 295 x 374 165 x 177 300 x 203 350 x 277 Bath opening W x D without head mm 145 x 295 235 x 295 295 x 500 Bath depth mm 150 200 200 160 160 160 Useable bath depth mm 130 180 180 140 140 140 Height of top edge of bath with o...

Страница 45: ...10 50 60 Hz kW 1 0 1 0 1 0 1 3 1 3 1 3 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 kg 0 11 0 13 0 17 GWP 100a 1430 1430 1430 CO2 equivalent t 0 2 0 2 0 2 Global Warming Potential GWP Comparison CO2 1 0 Time span 100 years according to IPCC IV Product specifications are...

Страница 46: ...46 54 Alpha 09 2020 j Pump characteristics Alpha Immersion Thermostat measured with water Heating up curves from Alpha A 6 A 12 and A 24 230 V 230 V ...

Страница 47: ...09 2020 j Alpha 47 54 Cooling characteristics Alpha RA 8 RA 12 and RA 24 230 V 230 V ...

Страница 48: ...form of excerpts and the utilization and or conveyance of its content are not allowed except for internal purposes without written approval from the manufacturer 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 pat...

Страница 49: ...nd Warnings 35 Filling quantity 45 G GWP 45 H Heat transfer liquid Testing 37 Hi 30 K Key functions 28 L LED signals 28 Lo 30 Low level protection 33 Low level Protection testing 33 M Maintenance 36 O Overtemperature cut off 33 Overtemperature protection 33 P Packaging 38 Personnel qualified 8 Pump connection link 26 PuP Pump blocked 34 R Refrigerant 45 Reset 34 S SAFE Overtemperature alarm 33 Sel...

Страница 50: ...50 54 Alpha 09 2020 j Standby 32 StbY 32 T Temperature Limit temperature 30 maximum temperature 30 minimum temperature 30 U UK plugs 27 W Warnings 32 ...

Страница 51: ...09 2020 j Alpha 51 54 intentionally left blank ...

Страница 52: ...52 54 Alpha 09 2020 j intentionally left blank ...

Страница 53: ... enclose this fully completed declaration RMA number Product serial number Customer operator Contact name Contact email Contact telephone Zip code Place Street house number Additional explanations The customer operator hereby confirms that the product returned under the above mentioned RMA number has been carefully emptied and cleaned that any connections have been sealed to the farthest possible ...

Страница 54: ...54 54 Alpha 08 2020 i ...

Страница 55: ......

Страница 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 ...

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