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Operating Instructions Immersion thermostat - Lauda

1. Compact thermostat MT 3 MT 12 and MT 20 The units are best set up so that the narrow side is to the front Insert the reference thermometer with mounting into the cover If MT 12 or MT 20 has no external system connected to it the circulation can be greatly improved by pulling off the tubing connecting of the outlet bend to the inlet nipple and turning pump housing and nozzle to face the opposite corner If this is not required the pump nipples are linked together with the Perbunan tubing supplied Medico thermostat MT 6 The bath carrier is placed on the Makrolon tank Insert the reference thermometer with mounting into the cover Connecting external systems Immersion thermostat The 9 mm i d Perbunan tubing Cat No RKJ 011 is pushed directly onto the outlet bend and connected to the external system the return tubing can be hung into the bath It is more convenient however to use the pressure and return nipples of the accessory set The nipple set can be fitted either on the left or on the right side as required the reference thermometer mounting has to be positioned accordingly The connection to the outlet bend is made with tubing When operating with photometers refractometers etc which have nipples for 4 mm i d tubing the reducer fitting of the accessory set is screwed into the nipples Immersion thermostat Compact thermostats Series MT Medico thermostat 7 2 B 9 9 1 Compact thermostats MT 3 MT 12 an
2. EDO UD EZD EDF 041 054 105 134 009 056 035 019 038 038 100 038 040 007 018 070 001 047 ab amp partir from serie 80 050 n s 1 2H 09 05 092 022 ue iberp 3102413 Ai134ed e qe ap ON 9 SHQWD Jasqom y 0 ued 1025 vanvi 02 IW Zl IN 2 10 2403 4nod 4aq 08 9 4 4114 0 6 y dund 10304 4040 a34n1eJadua adwod ap anajoy sa4njejadwua3 apuos 403 0Uuadung Jld J8 unjan3e4adua u0112auU02 Sul 231 5 due 43189H unijea2ipu 31 4naj3aS iuasuau3ueAg Jnaj2as adue abeyjneyy 031 abeystysy ON yasuezzay adue7 Bunziag abjazuy 031 100302 euiaul quaujsn pe sa ao quarto 8jjneu24ns ap u0 328304d JnaleA e ap abejsnfy aj38u003u810g A DOL ST 23 pysaqg 01 1 1 8104 9 y 421195 sup ey BELLE 4911043002 1102412 jeJauaB ansqdnauaqu 3Bej4neu3 sanjesadua ap 4najejnBay gwiadwe 102412 493184252194 M 2 M Bunztau 061 Wh 4a 6asingesadway
3. are packed carefully to prevent transport damage If the unit should arrive damaged the carrier or the post office has to be informed so that it can be inspected Standard accessories Immersion thermostat MT and MT 2 Reference thermometer ET 031 0 1009 Clamping bracket fitted Operating Instructions Compact thermostats MT 3 MT 12 and MT 20 Reference thermometer ET 031 0 100 C Bath cover MT 3 only l m Perbunan tubing Operating Instructions Medico thermostat MT 6 Reference thermometer 030 0 70 C 2 Reducing nipples Operating Instructions Immersion thermostat Compact thermostats Series MT Medico thermostat 6 2 7 1 Assembly and setting up Immersion thermostat MT and MT 2 Push the reference thermometer into the spring mounting at the side The thermostat is suspended into the bath to be thermostated see page 12 for suitable baths and the clamping screw is tightened If required the clamping element can be pulled off turned through 180 C and pushed on again so that the thermostat can be secured vertically when the bath has sloping sides If the accessory set Cat No LCZ 007 is ordered the immersion thermostat can also be secured to a laboratory stand Screw the fixing rod into the threaded hole at the back insert a screwdriver into the hole and tighten up The pump housing is turned so that the jet nozzle faces the centre of the bath Turn the nozzle downwards to obtain a smooth liquid surface
4. 1 036 019 005 Ersatzteile Pi ces d tach es Spare parts MT MT 2 MT 3 MT 6 MT 12 MT 20 54 44 45 46 47 48 05 89 D Best Nr No R f Ref No Temperiereinheit kompl Innenkessel Badbr cke Pumpenstutzen mit K hlschlange Unit de thermostatisation compl Cuve int rieure Pont du bain Tubulure avec serpentin de refroicisse ment Thermostatic unit compl Inner vessel Bath bridge Pump nozzle with cooling coil M 20 M 12 Bodenwanne Fond de la cuve Bath bottom M 20 M 12 GummifuB Pied caoutchouc Rubber food Badgef B Cuve de bain Bath vessel Thermometerhalter Fixation de thermom tre Thermometer holder Feder Ressort Spring Pumpenstutzen mit K hlschlange Tubulure avec serpentin de refroidissement Pump nozzle with cooling coil Badbr cke Pont du bain Bath bridge Bodenwanne Fond de la cuve Bath bottom Einf lldeckel Couvercle de remplissege Filling cover Temperiereinheit kompl Innenkessel Badbr cke Pumpenstutzen mit K hlschlange Unit de thermostatisation compl Cuve interieure Pont du bain Tubulure avec serpentin de refroidisse ment Thermostatic unit compl Inner vessel Bath bridge Pump nozzle with cooling coil M3 Gummit lle Douille en caoutchouc Rubber piece O Ring Joint torique O Ring Entleerungshahn kompl Robinet de vidange compl Drain cock compl Drehknopf Bouton rotatif Rotary knob Dichtung Joint Gasket UU UU HGB HGB EZG EU HKF HI UO HPB HGB HDQ UU EDT
5. Operating Instructions Immersion thermostat Compact thermostats Medico thermostat Series MT to DIN 12 879 From Series G 80 05 89 YAEE0D03 Immersion thermostat Compact thermostats Series MT Medico thermostat Contents Page 1 Brief operating instructions 2 Table of Data 5 Basic construction 4 Safety systems 5 Bath liquids and tubing 6 Unpacking assembly and setting up 7 Connecting external systems 8 Cooling the thermostat 9 Starting up 10 Operation of the safety circuit 1l Maintenance Enclosures Accessories Spares Circuit diagram Summary of LAUDA thermostats 2 10 10 1 12 Immersion thermostat Compact thermostats Series MT Medico thermostat 1 10 1 11 1 12 Brief operating instructions Check thermostat and accessories during unpacking for possible transport damage and if necessary notify carrier or post office Assemble unit according to Section 6 and add items as appropriate Connect the tubing at the pump outlets on the thermostats MT 3 MT 12 MT 20 and MT 6 Without external circulation link together the pump outlets with the perbunan tubing supplied With external circulation connect tubing to the external system Secure tubing with clips to prevent it slipping off When operating in the ambient temperature range connect external cooling according to Section 8 Use only deionised water see Section 5 Fill the unit up to approx 2 cm b
6. Section 4 only non inflammable liquids may be used The operating ranges of the bath liquids and tubing represent general data which may be limited by the temperature range of the unit Bath liquids Operating range 5 to 100 C Use deionised water Make up evaporation losses at higher temperatures Losses may be reduced by using suitable bath covers see Accessories page 13 Temperatures close to zero and below Water ethylene glycol mixture preferebly Glycoshell P 300 in ratio 1 1 Operating range 30 to 100 C Boiling point 110 C Ultra Therm G 100 Viscosity at 20 C 4 mm2 sec Cat No LZB 009 Non inflammable When working for extended periods at higher temperatures the proportion of water drops slowly The mixture then approaches the properties of pure glycol and therefore becomes inflammable flashpoint 128 C The mixture ratio must therefore be checked from time to time e g against the originel mixture or with a hydrometer Immersion thermostat Compact thermostats Series MT Medico thermostat 5 2 Tubing continuous lengths 6 6 1 Perbunan tubing 9 mm internal dia Application range up to 120 C For water and water glycol mixtures Silicone_tubing per metre 4 mm internal dia Application range up to 120 C For water end water glycol mixtures Secure tubing with clips to prevent it slipping off Unpacking assembly and setting up Cat No RKJ O11 Cat No RKJ 041 Goods
7. d MT 20 Medico thermostat MT 6 The tubing is connected to the pump nipples Pressure nipple always at the front return nipple at the back If necessary use reducer fittings An adequate flow rate is required to ensure reliable thermostatting of the external apparatus Where the flow cross section is severely restricted there may be a temperature drop between bath and external system due to the low flow rate In that case the bath temperature has to be suitably increased Secure the tubing with clips to prevent it slipping off Cooling the thermostats Due to the very low frictional heat generated by the pump it is possible to work without cooling down to just above ambient temperature approx 3 to 10 C see Table of Data page 3 Additional cooling is required for lower temperatures A cooling coil is fitted to the Compact thermostats MT 2 MT 12 MT 20 and the Medico thermostat MT 6 for this purpose On the Immersion thermostat the cooling coil of the accessory set must be screwed to the clamp Cooling can be effected as follows Down to 20 C Mains water keep the water consumption as low as possible Down to 209 Use flow through cooler DLK 5 DLK 15 DLK 30 depending on tank size and temperature It is essential to work with a water glycol mixture ratio 1 1 Insulated Silicone tubing Cat No LZS 001 must be used for linking the inlet and outlet nipples of the pump to the connections of the flow through cooler When
8. elow the top plate Check the supply voltage against the on the rating label Connect the cable to the supply Select the required temperature Switch on the unit with the mains switch green lamp lights up When operating with an external system ensure that the level inside the thermostat does not drop too much when the external system is being filled with the bath liquid When the bath liquid has reached the set temperature the yellow indicating lamp heating begins to flash Check the operating temperature on the reference thermometer and adjust temperature setting if necessary Safety The thermostat is a Class 1 W unit It must only be operated with non inflammable liquids see also Section 5 Important Note At higher operating temperatures the temperature rise of parts of the bath cover can exceed 60 C The outflow and return tubes of the pump reach the bath temperature Immersion thermostat Compact thermostats Medico thermostat Series 2 Table of Data MT These thermostats meet the reguirements of DIN 12879 Immersion thermostat Type MT MT 2 Temperature range without cooling water cooled 23 100 20 100 C Operating tempera ture range with external cooling Temperature setting Standard reference thermometer Temperature probe control action Temperature control at 70 C Heating load D 1kW 0 2kW Class to DIN 12879 Output pump output pressure L
9. g energy for the thermostatic liquid If the temperature control fails or if the liquid level is too low the heater may reach a temperature which in combination with inflammable thermostatic liquids can cause a fire in the laboratory 2 When using the thermostat with external circulation failure of the tubing can cause discharge of hot liquid and endanger persons and material The classification of thermostats depends on o whether non inflammable or inflammable thermostatic liquids are used o whether the thermostat is operated under supervision or unsupervised Immersion thermostat Compact thermostats Series MT Medico thermostat 4 5 units Series MT as described in these Operating Instructions are to 5 5 1 Class 1 W They are suitable only for o non inflammable bath liquids i e preferably water for operation close to zero the non inflammable water ethylene glycol mixture can be used see Section 5 Important Note Even with Class 1 W units the user is only protected against hazards from excess temperature and low level Further hazards may arise from the type of product being thermostated e g a shift above or below certain temperature levels or breaking of the container followed by reaction with the thermostatic liquid etc It is impossible to provide protection against all possible cases and they remain largely within the decision and responsibility of the user Bath liquids and tubing According to
10. ille d cartement Distence piece Klemmb gel Arc de fixation Fixing bracket Zugentlastung Protection pour c amp ble Cable tension relief Netzkabel mit Stecker C amp ble secteur avec fiche Mains cable with plug MT MT 3 MT 6 MT 2 MT 12 MT 20 Motor Moteur Motor 220 240 Triac Triac Triac Leiterplatte Regelung Circuit imprim R glage Printed circuit Control Thermometerhalter Fixation de thermom tre Thermometer holder Kontrollthermometer Thermom tre de contrble Reference thermometer 0 70 C 0 100 C Z nd bertrager Translateur d ignition ignition transducer BV 282 0054 Transformator Trensformateur Transformer 220V 178 HOl Nullspannungsschalter Commutation de tension nulle Zero switching triac U 217 B Potentiometer Potentiom tre Potentiometer 10 kOhm Transistor Trensistor Transistor BC 257 A K hlschlange Serpentin de refroidissement Cooling coil Stativstab Tige de statif Rod for stand Reduzierolive Olive r ductrice Reducer Druck und R cklaufstutzen Tubulures de refoulement et de retour Outlet Inlet connection Thermometerhalter Fixation de thermom tre Thermometer holder Feder Ressort Spring Perbunanschlauch Tuyau Perbunan Perbunan tubing EZD EZD EZD EST EIZ EIT EYI EWD EYT UO HSD HKO UO HKF HOF 049 051 052 054 025 029 023 088 120 012 012 005 014 102 006 007 065 009 009 001 039 008 190 005 030 031 005 068 049 043 003 036 022 018 01
11. iquid volume up to 50 I Bath liquid 5 100 C below 5 C Bath opening depth Usable liquid depth min 100 mm ET 031 0 100 graduated 0 59 552 Compact thermostats Medico thermostat MT 3 MT 12 MT 20 MT 6 50 100 25 100 C 24 100 C 24 100 C 20 100 C 20 100 20 100 C 20 100 C 20 100 analog resolution approx 0 3 C ET 030 0 70 C graduated 0 5 C PTC proportional 0 1 C automatic adjusting as required 0 to kW D IkW 0 2kW D 2kW D IkW Class 1 W with R 35 and TS 35 200 Class 3 8 l min against zero head 0 15 bar 1 5 mWG 2 5 3 5 1 9 13 1 14 20 1 4 61 deionised water water ethylene glycol mixture 1 1 120 105 300 175 300x350 120 285 160mm 160mm 160mm 150mm 140mm 140mm 140mm 130mm Immersion thermostat Compact thermostats Series MT Medico thermostat Type Bench area WxDxH Weight Power supply Interference suppression Cat No 220 240V 50 60 Hz Immersion thermostat MT MT 2 105x130x 300mm 3 5 kg 1 2 kW 2 1 kW LCE 004 LCE 006 Compact thermostats MT 3 160x265x 360mm 7 0 kg MT 12 550 365 360mm 12 0 kg MT 20 350x540x 360mm 15 0 kg 220 240 V 50 60 Hz Protection Class 1 to VDE 0100 1 2 kw LCB 011 2 1 KW Grade N LCB 027 2 1 kW LCB 015 Medico thermostat MT 6 145x440x 320mm 4 0 kg 1 2 kW LCM 00 Immersion thermostat Compact thermo
12. mostats Series MT Medico thermostat ed 10 2 Operation of the safety circuit switches off the thermostat on all poles heater ll and pump the reset button Release jumps out approx 5 mm The operation of the safety circuit can also be seen at switched on instruments green lamp lights the yellow heat control lamp will not light up even if the setpoint temperature will be increased The thermostat can only be restarted after o the temperature probe on the heater has cooled down to below 60 C the fault has been corrected liquid level too low faulty control circuit burst tubing 0 the reset button has been pushed in press firm This ensures that the thermostat cannot start up again automatically for example through a reduction in the temperature which could suggest that the fault has been rectified Maintenance LAUDA thermostats are designed for continuous operation They require no regular maintenance Contaminated bath liquid should be drained out through the drain cock and replaced with fresh liquid If the unit should become defective it is recommended that the thermostat unit MT should be removed by a qualified person and that you contact your next service department sales office LAUDA DR R WOBSER GMBH amp CO KG Postbox 12 51 D 6970 L auda K nigshofen West Germany Telephone 09343 503 0 Telex 689 523 lauwo d Telefax 09343 503 222 Immersion thermostat Compact thermostats Series MT Medic
13. n D blocage Release Kontrolithermometerhalter Let Fixation pour thermom tre de contr le Reference thermometer holder Temperatureinstellung Ajustage de temp rature Temperature adjustment Netzschaiter Interrupteur g n ral Mains switch Kiemmb gel Arc de fixation Fixing bow Heizk rper Corps de chauffe Heater AusfluGkr mmer Tube courb d coulement Jet nozzle Pumpenkammer Corps de pompe Pump housing MT6 MT 20 LAUDA DR A WOBSER GMBH amp CO KG Postfach 1251 D 59870 Lauda K nigshofen Tei 093 43 503 0 Tx 689523 Fax 09343 503222 Ersatzteile Pi amp ces d tach es Spare parts MT MT 2 MT 3 MT 6 MT 12 MT 20 Ersatzteile Pi ces d tach es Spare parts MT MT 2 MT 3 MT 6 MT 12 MT 20 VE var ON 10 11 12 15 14 15 17 18 19 20 21 22 Best Nr No R amp f Ref No Drehknopf Bouton rotatif Rotary knob Kappe Calotte Cap Mutterabdeckung Couverture d crou Nut covering Netzschalter Interrupter secteur Mains switch Temperaturbegrenzer Limiteur de temp rature Temperature limiter MT MT 3 MT 6 MT 2 MT 12 MT 20 PTC F hler Sonde PTC PTC probe Heizk rper Corps de chauffe Heater 220 240 V MT MT 3 MT 6 kW MT 2 MT 12 MT 20 2 kW Klemme Pince Clamp Feder Ressort Spring Splint Goupille Split pin Spange Agrafe Clip R hrpropeller H lice Stirrer Klemmschutz Protection pour pince Clamp protection Distanzst ck Dou
14. n for 20 tubes 14 17 dia 100 mm immersion Details on other racks on request Bath cover flat stainless steel for Model 20 in 2 parts for Model M 12 in one part Gable cover stainless steel for Model M 20 Tubing per metre Perbunan tubing 9 mm i d Silicone tubing 4 mm i d 80 80 110 110 80 80 110 110 mm mm mm mm immersion immersion immersion immersion immersion immersion immersion immersion UG 066 UG 067 UG 068 UG 069 UG 070 UG 071 UG 072 UG 075 UE 022 UE 020 LCZ 009 LEZ 050 LCZ 011 RKJ 011 RKJ 041 54 Immersion thermostat Compact thermostats Series MT Medico thermostat Reducer fitting for pump for tubing 4 mm i d UNIPROTECT R 35 Universal over temperature and low level protection Retrofitting with H 35 provides every thermostat with protection to Class 3 DIN 12 879 Accessories required immersion probe TS 35 200 and special holder Immersion probe TS 35 200 Clamping bracket for immersion thermostat and M 6 Retrofit bracket for M 3 M 12 M 20 Rising floor for retrofitting Usable area 250 x 160 mm continuous height adjustment Bath M 12 1 floor can be fitted Bath M 20 2 floors can be fitted 018 LRS 002 US 014 UD 048 UD 049 LCZ 012 14 Kontrolithermometer Thermom tre de contr le Reference thermometer Kontrolleuchte Heizung Lampe t moin Chauffage Pilot lamp Heater Entsperre
15. o thermostat 12 Accessories for Immersion Compact Medico thermostats Type Cat No Reference thermometer 0 70 C graduated 0 5 ET 030 0 100 C graduated 0 5 C ET 031 30 100 C graduated 0 5 C ET 032 Reference thermometer holder HKF 036 Accessory set for Immersion thermostats MT and MS LCZ 007 consisting of Cooling coil Pressure and return nipples 2 pump reducer fittings for tubing 4 mm i d Mounting rod Bath tanks for Immersion thermostats MT and MS Type Material Bath opening Capacity depth mm litres M 12 Stainless steel 300 x 315 160 12 LCZ 026 M 20 Stainless steel 300 x 490 160 20 LCZ 027 M 25 Stainless steel 300 x 490 200 25 LCZ 028 M 40 Stainless steel 300 x 750 200 40 LCZ 029 M 6 Makrolon 125 x 415 160 6 EU 056 Through flow Coolers DLK 5 LFD 001 DLK 15 LFD 102 DLK 30 LFD 103 Immersion thermostat Compact thermostats Series MT Medico thermostat Stainless steel racks for test tubes centrifuge tubes etc Bath M 12 up to 2 racks Bath 20 up to 4 racks RD 13 for 56 tubes RD 18 1 for 35 tubes RD 18 2 for 33 tubes RD 30 for 14 tubes Bath M 25 up to 4 racks Bath M 40 to 7 racks RE 15 for 56 tubes RE 18 1 for 53 tubes RE 18 2 for 33 tubes RD 30 for 14 tubes Makrolon racks Bath M 3 1 rack Bath M 6 up to 2 racks for 20 tubes 14 17 dia 10 13 dia 14 18 dia 14 18 dia 24 30 dia 10 13 dia 14 18 dia 14 18 dia 24 30 dia 70 mm immersio
16. stats Series MT Medico thermostat 44 4 2 Basic construction These operating instructions apply to 6 liquid thermostats of different construction Series MT Immersion thermostat MT and MT 2 Compact immersion thermostat with different heating load supplied with screw clamp so that the thermostat can be fitted to bath Compact thermostats Types MT 2 MT 12 and MT 20 Combined bath circulation thermostats with different bath volumes Medico thermostat MT 6 Bath circulation thermostat for the clinical laboratory with transparent Makrolon tank The common feature of all six models is the thermostat unit MT containing the electronics as well as the circulation pump Solid state proportional P controller with packet switching triac The Table on page 2 contains the main technical data of the thermostats If the heater overheats through loss of liquid a temperature limiter switches off heater and pump on all poles Warning the heater surface may reach temperatures up to 250 C especially with complete loss of liquid Safety system The DIN specification 12879 for laboratory thermostats entitled Liquid Thermostats General and Safety Requirements has been in operation since 1 5 1979 This specification lays down the safety devices required and divides thermostats into different safety classes Why it be dangerous to operate a thermostat 1 Thermostats are fitted with heaters which provide the necessary heatin
17. thermostating an external system the equipment must be arranged in the following order Thermostat external system flow through cooler thermostat Starting up Filling Fil the unit with deionised water or water glycol mixture according to Sec tion 5 The liquid volume is indicated on page 2 lable of Data The thermostats should never be filled higher than 2 cm below the cover While the thermostat is in use the heater must always be covered with liquid When it is connected up to an external system check during starting up that the liquid level in the thermostat does not drop too low due to filling up the external system If necessary top up with liquid until the correct level is reached Immersion thermostat Compact thermostats Series MT Medico thermostat 9 2 9 3 9 4 9 5 10 10 1 10 The bathes MT 12 and MT 20 can covered with a flet cover see page 12 or with a gable cover even when there is glassware or other items in the bath This is advisable especially at higher temperatures Connect the unit only to grounded socket Check the details on the rating label against the supply voltage Ensure that the pump outlets are linked together on MT 3 MT 12 MT 20 and MT 6 when there is no external system for exception see Section 6 Select the required temperature setpoint at the temperature knob Switch on the mains switch The green lamp lights up The yellow lamp heating is on continuousl
18. y When the set bath temperature has been reached the yellow lamp heating begins to flash The set temperature is controlled to an accuracy of better than 0 1 C Check on the reference thermometer that the bath temperature agrees with the selected setpoint If necessary adjust the temperature setting Operation of the safety circuit The following three faults could occur l The thermostat is started up without bath liquid or with the liquid level too low heater partly uncovered 2 The liquid level drops too much during operation especially at high temperatures The same fault may be caused by failure of the tubing and liquid being pumped out of the thermostat 5 Failure of the control system resulting in continuous heating The liquid eventually reaches the boiling point and evaporates If any of the above faults occur the safety circuit comes into operation A built in temperature probe measures the surface temperature of the heater and switches off the thermostat if a certain limiting temperature is exceeded According to DIN 12879 this type of protection is called over temperature protection Since the heater surface can reach very high temperatures up to 250 C especially when the thermostat runs completely dry only water or a water glycol mixture may be used in the thermostat otherwise it is impossible to prevent a fire under all circumstances despite the use of a safety system Immersion thermostat Compact ther

Operating Instructions Immersion thermostat - Lauda

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