OPERATING INSTRUCTIONS WB/OB 7 – 45 WBU 45
Contents
1.2. Q Q h delay Q h delay Q C temp h delay OQ h hold C temp h delay Q h hold C temp h delay O h hold main switch pushed function of the rotary knob refer to 5 working controller module select set temperature set on delay timer set hold timer activate Loop function activate set temperature dependent operation WB OB 7 45 WBU 45 7 Supervision of the program flow The status LEDs in the controller display give information about the program status at a glance Example Delayed start up and delayed shut down with set temperature dependent operation as described in example 6 6 90 C delay KCc_ hold S Unit is not heating a 90 C delay Kay oe hold Ss S Unit is heating up to setpoint o N t delay al y hold value t A Unit holds temperature at set delay hold S Heating is switched off 90 C a l WOE t ISS on actual temperature is displayed flashing on delay timer is running on hold timer is programmed on actual temperature is displayed off on delay timer ran down on hold timer is programmed on actual temperature is displayed off on delay timer ran down flashing hold timer is running on actual temperature is displayed alternating with End off delay timer ran down
3. O select set temperature C temp h delay O set on delay timer h hold O set hold timer C temp O deactivate Loop function h delay h hold C temp O activate set temperature dependent AY operation h hold 16 WB OB 7 45 WBU 45 6 7 Programming of an on delay and hold time with Loop function 90 C Example The unit has to start heating to 90 C after Pf Kp KR a 2 hour delay cool down to room temperature after 3 hours of operation detay aso LN pee ae including heat up time and repeat this pattern over and over O main switch pushed O function of the rotary knob refer to 5 working controller module O select set temperature h delay O set on delay timer h hold C temp O set hold timer h delay h hold C temp h delay O activate Loop function h hold C temp delay O deactivate set temperature dependent ane operation WB OB 7 45 WBU 45 17 6 8 Programming of an on delay and hold ti with Loop function and set temperature dependent operation 90 C Example The unit has to start heating to 90 C after VY AY Ke a 2 hour delay and shut down after 3 hours of operation at the set temperature 9 3 Ph WW SEF me gt hold 3h cool down to room temperature and re peat this pattern over and over
4. cccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeeeeeeeeeees 25 OUP AGONOSS ao cresctscavedenanecedetcuetecenizstecetenets sasanedecetauetecpacietedetaneds cecaustessaizetecetenetecesi 26 PYM Hivos cus ch acca sce ch rs cerca ch ok case se sacs ns vase EE va sw encima each A T 29 WB OB 7 45 WBU 45 1 The text of these Operating Instructions has been translated from the German If any part of the text is doubtful or the interpretation is unclear and also in case of errors the German original is to be considered as valid 1 Congratulations on your choice of a MEMMERT water oilbath Manufactured in Germany using the latest production techniques and finest materials available you now posses a technically superior and fully developed product Your bath has already been under extensive testing in our factory For correct operation of the equipment it is essential to observe the operating and maintenance instructions below This will ensure that your equipment will give many years satisfactory service Explanation of signs These signs mark important indication in the operating instructions Note the Operating Instructions Attention outside case temperature may be hot The corresponding markings on the unit means Technical data summary MEMMERT water and oilbaths Series WB and OB are electrically heated and electroni cally controlled The temperature of the thermostating liquid is continuously controlled
5. Q Q Q h delay h hold O h delay O h hold C temp h delay Q h hold C temp h delay Q h hold ES re 90 C delay 2h main switch pushed function of the rotary knob refer to 5 working controller module select set temperature set on delay timer deactivate hold timer deactivate Loop function deactivate set temperature dependent operation WB OB 7 45 WBU 45 6 5 Programming of an on delay and a hold time 9 Example The unit has to start heating to 90 C aftera orc 2 hour delay and shut down after 3 hours operation including heat up time delay 2h hold 3h O main switch pushed O function of the rotary knob refer to 5 working controller module C temp h delay O select set temperature h hold C temp h delay O set on delay timer O set hold timer C temp h delay O deactivate Loop function h hold C temp h delay O deactivate set temperature dependent operation WB OB 7 45 WBU 45 15 6 6 On delay and hold time dependent on set gh temperature ean Example The unit has to start heating to 90 C after a 2 hour delay and shut down after 3 hours of N operation at the set temperature delay 2h WOON t hold 3h O main switch pushed O function of the rotary knob refer to 5 working controller module
6. cleaning and Maintenance 27 GOOMNMG SYSTEM eriiens ior esevieebocketeronen aes 25 D deliyi 10 14 15 16 17 18 20 E electrical SUpply ssssssessneseneeerrserrrerrrrrrrrrrene 3 end of the PrOGlali ted crete tecc ieee 20 explanation of SIQHS sone ccicaidestdhenaieieae 2 F flat COVEF Aan DED E REED EE OL Dro on OORORES ETN aaron 23 G gable Cove Tiaia iaa ia e iiaa ias 23 28 H heate Saeicarminibnadeemnenenese 23 FAO Cerise ane eee a a ia aia 8 9 10 11 12 13 14 15 16 17 18 19 20 32 installati Minn arae 2 4 5 L limeresidUeS e a a 28 lOO p FUNGON a eniti r EEEE 10 11 12 13 14 15 16 17 18 M main switch module 6 22 28 Maintenances esha 2 27 mounting and removing the shaking device 26 N normal operation austseiguntetadasers Geiasats 1 11 P possible problems during the first run 21 DOWEL sfx eee eee ae adel eet eee ceed 2 3 28 programming of an on delay 14 15 17 18 WB OB 7 45 WBU 45 29 programming of an on delay AN a hold time nea ea 15 protection of the load tr wwcceiclennteseions 22 protection of unit and environment 22 Q quality of Material ak ccssesachstecdietees terial bees 3 R FESTA eck eee oe ol ORO ae oe See ee Palo 27 restart ai cote at Ae sg tu a Oa a a Io De 20 rotary KNOD sisi cind wer new avin enda een 7 8 9 10 11 12 13 14 15 16 17 18 20 28 S safety OOVICE xc icceiaietoncaeias 3 6 21 22 27
7. by a microproces sor controller with pulse package control Electronic microprocessor P D controller with continuous power matching and autodiagnostic system with fault indicator Check list for rectifying faults see chapter 14 integral timer for digital programme time selection The temperature is measured using a Pt 100 temperature sensor The accuracy is as follows o 11 E Temperature set accuracy 1 C Temperature fluctuation The components of temperature control are controlled by integrated malfunction recognition The heaters are installed outside therefore no problems through dirt or limeresidue Installation The unit must be placed on a level surface which cannot tilt The vent openings in the left and back side must remain unobstructed Minimum wall spacing on all sides is 80 mm The minimum spacing from the top of the bath to the next ceiling rack etc is 75 cm Transport Always use gloves If the units have to be carried at least 2 persons are required for this mode of transport 2 WB OB 7 45 WBU 45 Ambient Ambient temperature 5 C 40 C rH max 80 conditions Overvoltage Category Il Contamination degree 2 according to IEC 664 Setting tempe 10 C to 95 C at waterbaths WB WBU rature range WB with additional boiling stage until 100 C see 5 2 10 C to 200 C at oilbaths Working From 5 C above ambient to nominal temperature maximum temperature temperature see rati
8. selected boiling mode is stored into memory and the display for approx 3 seconds Decimal point is flashing Set button Rotary knob pushed will change the temperature setpoint O The decimal point stops flashing and the display switches back to actual temperature 93 0 C in this example O The display of the actual temperature can at most reach 110 C Over 99 9 C the single digit will be 1 C O The setpoint boiling stage will not be stored permanently into memory After switching the apparatus off and on again the controller shows the set value fixed before Notice O Pay attention to the waterlevel is all the time high enough Evaporation can cause an enormous loss of water O The liquid level has to be chosen in this way that the boiled liquid in the loaded waterbath does not spill ATTENTION Even in the operation with a cover hot water steam will emerge WB OB 7 45 WBU 45 9 5 3 General notice to timer settings The menu items delayed start up delay or delayed shut down hold can be selected by turning the rotary knob while pushing the main switch The present times can then be displayed or changed as follows JC temp 950 x h hold Set button Rotary knob pushed will change time setpoint 5 4 Adjustment of the special functions C temp h delay uc Delayed start up or shut down are deactivated C temp h delay hhold Between 1 minute and
9. the bath must be between the two markings in the right side wall of the tub The water level must be between 10 mm and 50 mm from the top edge of the tub Waterbaths can be fitted with a level control system see chapter 10 Emptying The tank can be drained through the drain valve Y The thermo stating fluid must be cooled to room temperature before draining Drain the fluid either directly into an appropriate container or connect an appropriate hose to the drain valve NOTE Polluted fluids may not be drained directly into the public wastewater system If the thermostating fluid is polluted please make sure that it will be properly filtered or dumped according to the applicable regulations IMPORTANT Operation with non flammable thermostating liquids only 4 WB OB 7 45 WBU 45 3 Installation Mains connection Filling Emptying oilbaths The mains connection cable must be placed away from any hot surface IMPORTANT The liquid level in the bath must be between the two markings in the right side wall of the tub The liquid level must be between 30 mm and 50 mm from the top edge of the tub The tank can be drained through the drain valve Y The thermostating fluid must be cooled to room temperature before draining Drain the fluid either directly into an appropriate container or connect an appropriate hose to the drain valve NOTE Polluted fluids and oils may not be drained into t
10. 1998 RFI suppression Class B DIN EN 61 000 3 11 VDE 0838 part 11 2001 04 EN 61 000 3 11 2000 The designated product is in conformity with the European Low Voltage Directive 73 23 EEC including amendments Council Directive on the approximation of the laws of the Member States relating to Electrical equipment for use within certain voltage limits Full compliance with the standards listed below proves the conformity of the designated product with the essential protection requirements of the above mentioned EC Directive DIN EN 61 010 1 VDE 0411 part 1 1994 03 EN 61 010 1 1993 DIN EN 61 010 2 010 VDE 0411 part 2 010 1995 03 EN 61 010 2 010 1994 Schwabach 21 03 03 Legally binding signature of the issuer This declaration certifies compliance with the above mentioned directives but does not include a property assurance The safety note given in the product documentation which are part of the supply must be observed WB OB 7 45 WBU 45 27 EC Declaration of Conformity Manufacturer s name and address MEMMERT GmbH Co KG AuBere Rittersbacher StraBe 38 D 91126 Schwabach Product Shaking device Type M00 Sizes SV1422 Nominal voltage AC 230 V 50 60 Hz alternative AC 115 V 50 60 Hz The designated product is in conformity with the European EMC Directive 89 336 EEC including amendments Council Directive of 03 May 1989 on the approximation of the laws of the Member States relating to elect
11. 28 SEU arpa sebandatan a E ERA 7 8 9 10 11 12 13 14 15 16 17 18 19 22 28 32 set up for operating status and for program SEQUENCES ce naaa a eai 1 Set DUttON ceccceccceeseeeseeeeeeeeeeeenes 7 8 9 20 setting temperature ranGe 6 cscceenecteeeers 3 special TUM CON St ecec apes atversat tercieererenmeet 10 supervision of the program flow 005 19 T technical data SUMMA cccceceeeeeeeeeeeees 2 einai peererr eer reer ercerr reer tree Perret reece TerePeeereee 10 temperature fluctuation eeeeeeeeeeeeeeeteees 2 temperature limiting device 21 temperate FANG Eset Aao Ae menos 3 temperature setting seeen 8 12 timer SCLUING ec eeeceeecceeeeeeeceeeeeeeeeeaees 10 20 transpo rir a aah 2 21 turn on the shaking device s 27 U Unit protectioN iesene aaan 3 W working controller module ccceeceeeeeteeees eee 11 12 13 14 15 16 17 18 20 28 working controller module sss 7 working temperature range sseeeeereeesen 3 Glossar O nominal temperature themaximum adjustable set temperature of the oven O ambient temperature the continuous temperature of the room in which the oven is set up O set temperaturedependent on operation the integrated digital timer for the hold time starts no earlier than the temperature in the chamber has reached the setpoint to least 0 5 C at 95 C norminal temperature resp 2 C at 200 C nominal temperature D 06981 01 04 2003
12. 9 hours 59 minutes the single digit is 1 minute C temp h delay h hold C temp h delay h hold Between 10 hours and 999 hours the single digit is 1 hour Co o He h delay h hold In addition to the menu items status LEDs temp delay and hold the menu items LP for Loop and SP for setpoint can also be selected by turning the rotary knob while pushing the main switch function of LP and SP see chapter 6 Repeat feature LOOP LPO Loop function deactivated LP 1 Loop function activated Set temperature dependent operation hold time SPO set temperature dependent hold time not activated SP 1 set temperature dependent hold time activated C temp h delay h hold C temp h delay h hold WB OB 7 45 WBU 45 6 How to set up for operating status and for program sequences 6 1 Set up for continuous normal operation 9 This is the present operating and the mode orc of operating as the bath is delivered up O main switch pushed O the function of the rotary knob refer to 5 working controller module O select set temperature Citemp O deactivate on delay timer m C cl h hold C temp h delay O deactivate hold timer h hold C temp O deactivate Loop function h delay h hold O deactivate set temperature dependent operation WB OB 7 45 WBU 45 11 6 2 Programming of a delayed shut down Exa
13. advisable to remove the shaking device if the waterbath shall be used at shaking high temperatures and the shaking device is not needed otherwise there device is unnecessary loss of water by evaporation Additionally to the removing of the shaking device itself the side cover has to be replaced by the second side cover which was delivered with the waterbath To mount the shaking device please perform the described tasks in reverse order If you have a water bath with a rectangular opening of the tub it is necessary to place the provided mounting frame on the tub prior to the mounting of the shaking device WB OB 7 45 WBU 45 23 12 1 Initial operation Mains con The supply mains has to be positioned making sure that it does not come nection into contact with any hot parts Filling of the In order to protect the stainless steel parts of the waterbath as well as the waterbath shaking device from corrosion it is necessary to use demineralized water The bath has to be filled in such way that the distance between the top edge of the waterbath and the water level is at least 10 mm and no more than 50 mm with loaded shaking device Attention Dependent on the load in the shaking device and the desired shaking frequency the water in the bath as well as the fluid in the shaking device which might be aggressive may spill over In this case please adjust either the shaking frequency or the water level but do not leave more tha
14. cimal point on the display is flashing O Release set button O The selected set temperature is stored into memory and is displayed for approx 3 seconds Decimal point is flashing O single digit 0 1 C for the waterbath and 1 C for the oilbath Set button Rotary knob pushed will change the h delay temperature setpoint C temp O The decimal point stops flashing and the display switches back to actual temperature 85 C in this example Notice Changing the displayed setpoint is only possible if the set button is held down at the same time This helps to avoid unintentional changes Turning the rotary knob rapidly changes the setpoint in large steps turning it slowly changes the setpoint in single digits All settings are stored peramanently within the controller memory excluding boiling stage 8 WB OB 7 45 WBU 45 5 2 Temperature boiling stage only in waterbaths To reach the temperature of the water higher than 95 C boiling point in the waterbath a boiling stage is provided If this has been set the heating is switched on continuously The boiling stage can be activated as follows Cm C temp C h delay CC af gt een CL Cy cy di h delay Llu Ce nae T O Hold down set button and raise the set temperature with the rotary knob over 95 C The display will show ccc The decimal point on the display is flashing O Release set button O The
15. e cleaned and polished immediately Limeresidues can be removed by vinegar or citron solutions On units with gable cover we recommend that the hinge bolts are oiled from time to time if the bath is used frequently 14 Checklist for rectifying faults Main switch pushed Equipment not connected green lamp in main switch module Lamp faulty remains dark Main fuse defective No temperature indication on the Microfuse defective display T32mA 250 V on printed wiring board 55139 x Yellow lamp in main switch module Ambient temperature too high working tem remains dark perature in oven higher than the working temperature set with rotary knob setpoint Lamp fault Red lamp in main switch module Temperature safety device is actuated see lighted chapter 8 Display E 1 Circuit element TRIAC defective in working controller module send controller back to Memmert for exchange Display E 2 Power board defective in working controller module send controller back to Memmert for exchange Display E 3 Pt 100 defective in working controller module actual temperature out of range Display E 4 Internal Configuration Error in working controller module Turn off the oven then turn it back on In case of a malfunction contact an authorized service station for Memmert equipment or please inform the Memmert service department WB OB 7 45 WBU 45 25 The details in these Operation Instructions must be carefully observ
16. ed control light will remain on O Reset TB When the water bath has cooled down or has been filled heating can be cut in again by pressing the red button on the back of the water bath The unit will emit an audible click when the temperature limiting device is reset O Possible problems during the first run Unusual conditions which may occur during transport e g strong shocks or very low temperatures below 5 C can result in a release of the temperature limiter TB The overtemperature protection can be reset by pressing the red button which is located on the back of the bath click Despite this safety device it is mandatory to make sure that the bath is always filled to a proper level to avoid danger to persons or damage to the unit If the reason of the malfunction cannot easily be recognised transport too low fluid level etc it is necessary to contact a qualified electrician 20 WB OB 7 45 WBU 45 8 2 Adjustable temperature limiter TWB class 2 according to DIN 12877 standard equipment in oilbath special equipment in waterbath The adjustable temperature limiter TWB works according to DIN 12877 independently of the temperature control system By different adjustments those safety devices can have two different functions O Protection of unit and environment and O Protection of the load from excessive temperature The safety devices should be checked at regular intervals e g once a m
17. ed in order to ensure satisfactory operation Any warranty and claims for damage are excluded if these instructions are disregarded We reserve the right to make changes in technical specifications Dimensions subject to confirmation Standard units are safety approved and bear the test marks 15 Our Address MEMMERT GmbH Co KG P O Box 17 20 91107 Schwabach Federal Republic of Germany x T 49 9122 925 0 mes Fax 49 9122 14585 Internet www memmert com Direct dialling in service department T 49 9122 925 143 E Mail service memmert com I by MEMMERT GmbH Co KG 26 WB OB 7 45 WBU 45 EC Declaration of Conformity Manufacturer s name and address MEMMERT GmbH Co KG AuBere Rittersbacher StraBe 38 D 91126 Schwabach Product Waterbath Oilbath Type WB OB Sizes 7 10 14 22 29 45 Nominal voltage AC 230 V 50 60 Hz alternative AC 115 V 50 60 Hz The designated product is in conformity with the European EMC Directive 89 336 EEC including amendments Council Directive of 03 May 1989 on the approximation of the laws of the Member States relating to electromagnetic compatibility Full compliance with the standards listed below proves the conformity of the designated product with the essential protection requirements of the above mentioned EC Directive DIN EN 61 326 VDE 0843 part 20 1998 01 EN 61 326 1997 DIN EN 61 326 A1 VDE 0843 part 20 A1 1999 05 EN 61 326 1997 A1
18. he public wastewater system Please make sure that the oil will be properly dumped according to the applicable regulations We recommend Silicon Oil for example Baysilon PN 200 produced by Bayer For safety reasons the flash point of the oil must be at 300 C or higher The manufacturer of the oil may also have special regulations for oil changing intervals due to pollution or aging of the oil WB OB 7 45 WBU 45 which have to be observed WARNING In case of fire never extinguish with water Use appropriate fire extinguisher medium An overheated bath must never be refilled or topped up ATTENTION Take special care when working at high temperature Outside case temperature may be hot PESE BTE QB EBK eE 4 Main switch module The main switch module contains O main switch O three signal lamps for display of the unit status main switch pushed unit ready for use m P m m A p main switch not pushed unit is shut down The previous setpoint is indicated briefly on the controller display after switching on blinking point Green Red Yellow ready for operation fault indicator unit is heating 4 1 Main switch with overtemperatur protection in OB standard in WB optional The main switch module contains main switch O three signal lamps for display of the unit status O knob to adjust the overtemperature Adjustable temperature limiter Adjust the overtemperature a
19. memmerr OPERATING INSTRUCTIONS Water and Oilbaths WB OB 7 45 WBU 45 12 1 13 14 15 16 TABLE OF CONTENTS Congratulations on your choice of aMEMMERT water oilbath 00 2 Installation waterbaths sssssssnnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnne 4 Installation oilbaths cases execs vies caisceces acid vis skied dees athea sis atvesiencdaseiasaivsasencteceaesctasisveatetesess 5 Main switch IMO CUE sco ctis cents ectetacetsenecetasctetetcictacetizeteteedietaceatvetecendteteieddveteceveiicatenacs 6 Main switch with overtemperatur protection ccccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaes 6 Working controller midis fesiccsccescccaccee sce sccescerscceascescnessqescctancesncennacanctaaaeacsemacewaes 7 Temperature setting oct sce ncc2 ne elena etek ane teed ted eee ene 8 Temperature boiling stage only in waterbath cccccceceeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 9 General notice to timer SettingS 22 4 2 2 0 c cececeeceeceeeeneeceeceneeceeeeceeceecenenceenenenes 10 Adjustment of the special functions cccceececeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 10 How to set up for operating status and for program Sequences ceeeee 11 Set up for continuous normal Operation cccceeeeeeeeeeceeeeeeeesseeeeeeeeeeeeeeeeeeess 11 Programming of a delayed shut down 12 Programming of a delayed shut down dependent on set te
20. mperature 13 Programming of an On elay eneee 14 Programming of an on delay and a hold time eee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee 15 On delay and hold time dependent on set temperature c cceeeeeeeeeeeeeees 16 Programming of an on delay and hold time with Loop function ceeeeeeeeeee 17 Programming of an on delay and hold time with Loop function and set temperature dependent operatio sxc sxcccuessderesagucssenrsinacs vbagusaoanspcubeeseeuausueapeateeieg pareanepaoncenbpeasee 18 Supervision of the program flOW ccceeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeaeaeees 19 safety control unit aie G aac eee aa 20 Temperature limiting device standard in waterbatKhs ccccccececeeeeeeeeeeeeeeeeees 20 Adjustable temperature limiter TWB class 2 according to DIN 12877 21 Use of the cover Special EQUIPMEND ceeeeeeeeeeeeeeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeeees 22 Level control special equipment only waterbaths cccccceeeesseeeeeeeeeeeeeees 22 Cooling system special equipment only waterbath ccceeeeeeeeeeeeeeeeees 23 Shaking DOV iC iss vce aes chica e aara ics cess cis aces ois aes vos cei das ccs asd ca add oi as ee 23 initial operation snesena a deka uraweded a a 24 Cleaning and maintenance sssssssssssssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnna 25 Checklist for rectifying faults
21. mple The unit has to shut down the heating after 2 hours operation including heat up time with temperature setting at 90 C a t C temp J l h delay j h hold _ gt h delay h hold C temp h delay h hold C temp h delay h hold C temp h delay h hold j 10 ye OBE ES 9 90 C Cna hold 2h 4 main switch pushed function of the rotary knob refer to 5 working controller module select set temperature deactivate on delay timer set hold timer deactivate Loop function deactivate set temperature dependent operation WB OB 7 45 WBU 45 6 3 Programming of a delayed shut down 9 dependent on set temperature 90 C Example The unit has to shut down the heating 2 hours after it has reached its set temperature of 90 C hold 2h ULLLLLLL I O main switch pushed O function of the rotary knob refer to 5 working controller module temp h delay O select set temperature h hold C temp h elay O deactivate on delay timer h hold C temp h delay O set hold timer h hold C temp h delay O deactivate Loop function h hold C temp h delay O activate set temperature dependent hinog operation WB OB 7 45 WBU 45 13 6 4 Programming of an on delay Example The unit has to start heating to 90 C after a 2 hour delay
22. n 50 mm distance between top edge of the waterbath and water level Turn on Turn main switch 1 on the shaking the shaking device to position l the green light 2 device indicates ready for operation The shaking frequency is adjusted using button 3 memmert aa Bh l T V power reset For your protection the device is equipped with an overload sensitive automatic switch off If the green lamp is lit but the shaking device does not move despite an appropri ate setting of the shaking frequency this safety device has stopped the equipment In this case please check if there is overload of the device or if something got stuck between the moving parts Remove the overload condition and restart the unit by pressing the reset button 4 Cleaning and maintenance Please see cleaning and maintenance in the operating instructions for the water baths 24 WB OB 7 45 WBU 45 13 Cleaning and maintenance By regular cleaning of the easy to clean the tank residues are avoided which at continuous influence can impair the outfit and function of the water oilbath The unit can be cleaned with commercial stainless steel cleaning agent Please note that objects liable to rust must not be placed into the bath Rust sediments lead to contamination of the stainless steel tank or external casing If rust stains caused by contamination occur on the tank surface the affected areas must b
23. ng plate range with circulating pump 15 C Overheat DIN 12877 thermal safety classes 1 standard safety device Class 2 special equipment at waterbaths Class 2 standard at oilbaths Electrical 230 V 10 50 or 60 Hz Adequate insulated supply which incorporates supply earth conductor to EN 61010 Protection IP 20 no humidity protection to DIN 40 050 Interference suppression Grade N to VDE 0875 A fuse 250V 15A quick is used for unit protection Before current connection please compare label on the bath and instructions of your local current supplier e g in Germany DIN VDE 0100 with FI safety device Quality of material Memmert is using stainless steel Spec 1 4301 for the external casing as well as for the interior an outstanding material because of its high stability optimum hygienic features and corrosion resistance against many not all chemical combinations Attention e g at chlorine combinations od wao o sza mow weg waosa vai rsa ao0w eo wao 21 era 20w we wao waa 2400w ao waos as 2a 0w o WB OB 7 45 WBU 45 3 2 Installation waterbaths Main The mains connection cable must be placed away from any hot connection surface Filling ere l max 50 In order to garant the high quality of the stainless steel it is recommended by the steel producer to fill the waterbath with demineralised water IMPORTANT The water level in
24. off hold timer ran down Further information during program operation C temp e h delay soon l _ h hold C temp h delay h hold WB OB 7 45 WBU 45 All actual values can be accessed by turning the rotary knob selection of the menu items even through program operation Q The setpoint of each menu item can be set checked by pressing the set button briefly 19 End of the program Restart After the end of the program the actual temperature is shown alternating with End in the display of the working controller module Restart by switching the unit off and on or by checking or changing the timer settings All program settings are stored permanently within the controller memory excluding boiling stage setting 8 safety control unit 8 1 Temperature limiting device standard in waterbaths For safety purposes this water oilbath is equipped with an additional overtemperature protection TB class 1 in compliance with DIN 12877 which automatically shuts off the bath if it exceeds the maximum temperature The bath may exceed the maximum temperature if it is used without or not enough thermostating fluid or if the working controller is defective In this case the temperature limiter TB will switch off the unit at a fixed temperature above the maximum temperature The temperature display of the working controller and the yellow control light will turn off The green and r
25. onth once the bath has stabilised at the desired temperature To perform this safety check reduce the setting of the safety device until the red control light at the main switch module turns on After that the safety device can be set again safety temperature Notice During programmed operation the safety temperature control unit has to be set sufficiently higher than the maximum working temperature or at the maximum temperature of the bath Protection of unit and environment O Turn the adjustable overheat controller e g by use of a coin to upper temperature limit Protection of load O First turn adjustable overheat controller to upper limit O After the unit has stabilised the setting of the overheat limiter should be moved down until it operates The red signal lamp in the main switch module turns on Now turn the temperature limiter to nearly one digit higher Upper tempera Set close tothe The temperature limiter must ture limit switching point be reset by pressing the Protection of unit Protection of the adjustment knob and environment load Maximum temperature rating of unit 200 C one scale line means approx 12 C 16 C Should the temperature rise above the set safety temperature the adjustable temperature limiter switches off the heating The alarm lamp turns on In this case please check the TWB setting as described and readjust it if necessary Should a fault condition be
26. present please contact an authorised service station for Memmert equipment WB OB 7 45 WBU 45 21 9 Use of the cover special equipment Gable cover Flat cover The gable cover may be ordered as already mounted special equip ment should always be closed in order to prevent evaporation of thermostating liquid and to obtain optimal temperature distribution The gable shape of the cover makes sure that condensed water will not drop down into the loads For positioning of test flasks on top of the bath a flat cover special equipment may be used The size of the holes in this cover can be adapted to the flasks with ring inserts Please note that the flat cover will heat up with the thermostating liquid The rings may therefore only be inserted or taken off if the bath is cooled down 10 Level control special equipment only waterbaths 2 different filling levels can be maintained constant if the unit is fitted with a level control system When using water as thermostating liquid connect the feed pipe with tubing to the mains water supply The overflow must be connected with tubing to an appropriate container or sink Make sure that the tubing cannot be clogged or bended and that it continually runs downhill Please note that the overflowing water may be up to 100 C hot Feed pipe and overflow are indentified by arrows Use temperature resistant mate rial for the tubing If the second overflow is not
27. required it must be closed with a sealing cap The evaporation loss can be compensated by turning on the water supply slightly drops The water flow can be checked through the opening X The level control system cannot be retro fitted lt a my ATTENTION Take special care when working at high temperature Outside case temperature may be hot 22 WB OB 7 45 WBU 45 When the water bath is fitted with a cooling system for faster cooling of the bath liquid connection X must be linked by tubing to a cold water mains supply Connection Y must be run into a sink by means of tubing Use temperature resistant material for the tubing Please note that the overflowing water may be up to 100 C hot The overflow must be connected with tubing to an appropriate container or sink Make sure that the tubing cannot be clogged or bended and that it continually runs downhill 12 Shaking Device special equipment only waterbaths WB 14 and WB 22 Description The shaking device moves back and forth with a frequency of approx 10 to 150 movements per minute The frequency is electronically controlled and infinitely variable Using the screw on the panel the frequency can be locked The distance covered by one movement is 15mm Mounting The waterbath can be operated without the shaking device and the and remov support frame can be removed from the waterbath It is especially ing the
28. romagnetic compatibility Full compliance with the standards listed below proves the conformity of the designated product with the essential protection requirements of the above mentioned EC Directive DIN EN 61 326 VDE 0843 part 20 1998 01 EN 61 326 1997 DIN EN 61 326 A1 VDE 0843 part 20 A1 1999 05 EN 61 326 1997 A1 1998 RFI suppression Class B The designated product is in conformity with the European Low Voltage Directive 73 23 EEC including amendments Council Directive on the approximation of the laws of the Member States relating to Electrical equipment for use within certain voltage limits Full compliance with the standards listed below proves the conformity of the designated product with the essential protection requirements of the above mentioned EC Directive DIN EN 61 010 1 VDE 0411 part 1 1994 03 EN 61 010 1 1993 DIN EN 61 010 2 010 VDE 0411 part 2 010 1995 03 EN 61 010 2 010 1994 Schwabach 21 03 03 Legally binding signature of the issuer This declaration certifies compliance with the above mentioned directives but does not include a property assurance The safety note given in the product documentation which are part of the supply must be observed 28 WB OB 7 45 WBU 45 Spf 16 Index A alar ee a r E 22 ambient conditions 43 iseetscsceeeactiadecaaaiaie 3 C checklist for rectifying faults c cceeee 28 re erclallgle Ieertee eereree re ere tr ai 27 28
29. s described in chapter Safety devices alarm set eo power alarm heat m on off 0 6 WB OB 7 45 WBU 45 5 Working controller module The working controller can be operated using the digital rotary knob and the set button The multifunctional display gives information about temperature and program setting Set button JC temp h delay h hold Rotary knob Effect of turning the rotary knob Set button not actuated O selection of the menue item temp delay hold LP SP WB OB 7 45 WBU 45 Set button actuated Q Press Setpoint is displayed temperature or time decimal point is flashing Hold down Displayed value can be changed with the rotary knob Release Value is stored in memory turn rotary knob clockwise turn rotary knob anitclockwise Icm IL menu items to choose C temp h delay h hold C temp h delay h hold h delay h hold h delay h delay Temperature Delayed start up Delayed shut down holding time Repeat feature Loop Set temperature dependent operation 5 1 Temperature setting With the set button not pushed the display will show the actual temperature within the chamber The temperature setpoint can be set as follows C temp ma h delay JC temp 950 i a h hold O Hold down set button and set the required temperature with the rotary knob de
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