Thermostat LT 200
Contents
1. Draw off the liquid with a pipette avoiding any contact with the skin DANGER Caution should be exercised with acids and lyes as they can cause burns e Transfer liquid residues to an empty cuvette for proper disposal Remove broken glass with tweezers avoid any contact with the skin 67 Maintenance 6 2 Instrument test The temperature shown in the display corresponds to the temperature in a closed LANGE cuvette filled with an aqueous medium During the heating phase the real block temperature in the vicinity of the heater may be higher than the temperature shown in the display An empty LANGE cuvette LCW 906 glycerol approx 5 ml and a stem type thermometer calibrated over the range from 95 C 155 C type 67C to ASTM are needed to check the block temperature Fill the cuvette with glycerol at room temperature and insert the thermometer until it touches the bottom of the cuvette When the thermometer is in the cuvette the level of the glycerol must be 62 mm 0 5 mm Insert the cuvette in the centre opening of the second row of the test block Start the temperature program for 100 C 60 min for this block When the heating phase is complete the temperature shown by the thermometer should be equal to the temperature shown in the display 6 3 Changing the protective covers To change the protective covers proceed as follows 1 Half open the protective cover approx2. 2 1 3 Warning 48 DANGER The ventilation slits in the lid must not be covered otherwise overheating may occur The protective lids must always be closed during operation The surface of the heating blocks is thermally insulated Never insert a finger into an opening as there is a danger of suffering burns The LT 200 thermostat should only be connected to a socket outlet with earthing contact Be sure to use an undamaged cable General Information 2 2 General Product Information The thermostat has been designed in accordance with the current state of the technology and the acknowledged safety regulations The manufacturer certifies that this instrument was tested thoroughly inspected and found to meet its published specifications when it was shipped from the factory Nevertheless under certain circumstances users may be at risk or the proper functioning of the instrument may be impaired 2 3 Important information about the manual The manual contains all the information needed to enable the instrument to be operated without any problems throughout its lifespan Such adherence results in less down time and lower repair costs and increases the lifespan of the instrument Copyright The copyright to this User Manual remains with the manufacturer The Manual contains instructions notes and drawings of a technical nature which may not either in full or in part be duplicated disseminat
3. 45 and take hold of it above the external hinge with your thumb inside Figure 4 68 Maintenance 2 Press your thumb against the inside of the cover and carefully bend the cover upward and lift it out of its mounting Figure 5 3 Lift the protective cover slightly and take the other side out of the mounting 4 Fit a new protective cover by carrying out the above steps in the reverse order Figure 4 Changing the Protective lid Step 1 Figure 5 Changing the Protective lid Step 2 69 Maintenance 70 Section 7 Troubleshooting BLOCK IS TOO HOT PLEASE WAIT INIT ERROR oK The temperature of the heating block is higher than the target temperature Wait until the heating block cools The thermostat is defective Please contact Customer Service 71 Troubleshooting 72 Section8 Contact Information Orders Repair service Please contact your representative HACH LANGE GMBH WillstatterstraBe 11 D 40549 Dusseldorf Tel 49 0 2 11 5288 0 Fax 49 0 2 11 5288 143 info hach lange de www hach lange de HACH LANGE LTD Pacific Way Salford Manchester M50 1DL Tel 44 0 161 872 14 87 Fax 44 0 161 848 73 24 info hach lange co uk www hach lange co uk Information Required e Hach account number if available e Billing address Your name and phone number e Shipping address e Purchase order number e Catalog number e Brief description or model numbe
4. LANGE UNITED FOR WATER QUALITY DOC022 98 00742 JAN06 LT 200 TE LANGE UNITED FOR WATER QUALITY DOC022 98 00742 JAN06 Thermostat LT 200 USER MANUAL english January 2006 Edition 2 Hach Lange GmbH 2006 All rights reserved Printed in Germany CK SK 42 Table of Contents Section 1 Specifications 45 Section 2 General Information 47 2 1 Safety Information 47 2 1 1 Use of Hazard Information 47 2 1 2 Precautionary Labels ee 48 e Warning u g telaio 48 2 2 General Product Information 49 2 3 Important information about the manual 49 2 3 1 Safety Against Risk of Fire 50 2 3 2 Chemical and Biological Safety 50 2 4 Overview of Product Function 51 2 5 Disposal in accordance with EU directive 2002 96 EC 51 Section 3 Installation 53 3 1 Unpacking the Instrument 53 3 2 Front and back view an ee 54 Section 4 Operation 57 41 Software Meninas 57 Section
5. On Off switch 3 Nameplate 2 Plug in power supply 55 Installation 56 Section 4 Operation 4 1 Software Menu SELECT BLOCK LEFT RIGHT Select the heating block SELECT PROGRAM Selection of 100 C temperature program Heats 100 cuvettes for 30 60 or 120 minutes at 100 C DIGESTION PERIOD 120 60 30 Selection of temperature time 100 C 100 C 60 OK For example the 100 C 60 minutes setting is needed to digest samples using the LCW 902 Crack Set Start the program with OK SELECT PROGRAM COD Selection of COD Temperature program Heats cuvettes for 2 hours at 148 C In the cooling phase 4 beeps indicates that the cuvettes have cooled to 80 C Remove and carelully invert the cuvettes several times before allowing them to cool further in a rack COD 148 C 120 OK Start the program with OK SELECT PROGRAM Selection of 40 C temperature program Heats 40 cuvettes for 10 minutes at 40 C 40 C 40 C 10 Start the program with OK OK SELECT PROGRAM Programming a user specific temperature program PRG1 5 4 User programs auf Seite 65 57 Operation 58 Section 5 5 1 Starting up Start up Start up Place the thermostats on a stable level heat resistant surface Plug one end of the power supply into the back of the thermostat below the power switch and plug the other into an ear
6. 5 Startup aia ci 59 I 59 5 2 Routine operation vecinas cia 61 5 2 1 Thermometer symbol 61 5 2 2 Clock symbol 62 5 2 3 Beep functions cicala 62 O des ae ce 62 5 3 Selecting the program ae teed 63 5 4 User programs ee 65 5 5 LANguage il ale 66 Section 6 Maintenance 67 6 1 Cleaning the Instrument a 67 6 2 Instrument test suis 68 6 3 Changing the protective covers 68 Section 7 Troubleshooting 71 43 Table of Contents Section 8 Contact Information Section 9 Warranty liability and complaints 44 Section 1 Specifications Specifications are subject to change without notice Performance Specifications Type Thermostat with one heating block or two separate heating blocks with integrated protective lid for heating cuvette tests and reaction vessels Temperature programs COD program 148 C 120 min 100 C program 100 C 30 60 120 min 40 C program 40 C 10 min and freely selectable 37 150 C no cooling Timer programs freely selectable 0 480 min acoustic signal when the set time expires He
7. ating rate Temperature stability from 20 C to 148 C in 10 min to DIN 38409 44 1 C Number of cuvettes LTG082 xx 10xxx 9x 13 mm diameter 2 x 20 mm diameter LTG082 xx 21xxx left 15 x 13 mm diameter right 6 x 13 mm diameter 4 x 20 mm diameter Physical and Environmen tal Specifications Width 250 mm Height 145 mm Depth 310 mm Weight LTG 082 xx 10xxx 2 kg instrument 3 5 kg packed LTG 082 xx 21xxx 2 8 kg instrument 4 3 kg packed Ambient conditions Operating temperature 10 45 C Storage temperature 40 60 C Relative humidity max 90 non condensing Additional technical data Mains connection 115 230 V 5 15 50 60 Hz protection class LTG 082 xx 10xxx 115 V 300 VA 230 V 450 VA Power input LTG 082 XX 21 XXX 115 V 600 VA 230 V 900 VA Safety checks CE GS and cTUVus Guarantee 2 years 45 Specifications 46 Section 2 General Information 2 1 Safety Information Please read this entire manual before unpacking setting up or operating this equipment Pay attention to all danger and caution statements Failure to do so could result in serious injury to the operator or damage to the equipment To ensure that the protection provided by this equipment is not impaired do not use or install this equipment in any manner other than that specified in this manual 2 1 1 Use of Hazard Information DANGER Indicates a poten
8. ed used without authorization for competitive purposes or communicated in any other way 49 General Information 2 3 1 Safety Against Risk of Fire Certain electrical circuits within this equipment are protected by fuses against over current conditions For continued protection against a risk of fire replace fuses only with the same type and rating specified 2 3 2 Chemical and Biological Safety DANGER Handling chemical samples standards and reagents can be dangerous Users of this product are advised to familiarize themselves with safety procedures and the correct use of chemicals and to carefully read all relevant Material Safety Data Sheets Normal operation of this instrument may involve the use of hazardous chemicals or biologically harmful samples user must observe all cautionary information printed on the original solution containers and safety data sheet prior to their use All waste solutions must be disposed in accordance with local and national law 50 General Information 2 4 Overview of Product Function The LT 200 thermostat can heat solutions in round cuvettes of various sizes at 37 150 C for a period of 0 480 minutes The LT 200 thermostat has one temperaturecontrolled heating block or two separate ones The small openings diameter 13 mm in the heating block are suitable for the HACH LANGE cuvette tests e g COD and phosphate cuvettes The larger openings diamete
9. not met claims for damages due to the failure to comply with the requirements are rendered void Any further claims in particular claims for consequential damages cannot be made Consumables and damage caused by improper handling poor installation or incorrect use are excluded from this clause 75 Warranty liability and complaints 76
10. pressing the appropriate key The COD program heats cuvettes for 2 hours at 148 C In the cooling phase 4 beeps indicate that the cuvettes have cooled to 80 C At this point the cuvettes must be removed and carefully inverted a few times This setting is suitable for all COD cuvette tests Note Press OK to confirm your selection or press the UP ARROW KEY to return to the program selection screen 63 Start up The 100 C program heats cuvettes for 30 60 or 120 minutes at 100 The setting 100 C 60 minutes is needed for example to determine phosphate and chromium or for digesting heavy metals Note Press OK to confirm your selection or press the UP ARROW KEY to return to the program selection screen The 40 C program heats cuvettes for 10 minutes at 40 This setting is used for for example enzymatic food tests Note Press OK to confirm your selection or press the UP ARROW KEY to return to the program selection screen 64 Start up 5 4 User programs The LT 200 can accommodate 6 user programs in the storage locations PRG1 to PRG6 The following example illustrates how users can program their own temperature programs i Press key below PRG1 2 Press key below PROG 3 Press PRG1 to assign a 4 character program name Press this key for several times to run through the digits and letters Note Press the RIGHT ARROW KEY to move the cursor to the next position P
11. r 20 mm are intended for reaction vessels Sample preparation e g the sample digestion for a number of cuvette tests is carried out in the reaction vessels The actual temperatures of the heating blocks and the remaining time are permanently visible in the digital display The LT 200 thermostat has 3 permanent and 6 freely programmable temperature programs The LT 200 thermostat comes with a multi language support 2 5 Disposal in accordance with EU directive 2002 96 EC How to prepare an electrical instrument for disposal remove any cuvettes that are still in the instrument 51 General Information 52 Section3 Installation DANGER Only qualified personnel should conduct the tasks described in this section of the manual 3 1 Unpacking the Instruments 1 Remove the LT 200 thermostat and accessories from the shipping container 2 Do not push any loose objects under the instrument as this could affect its stability 3 Inspect each item for any damage that may have occurred during shipment 4 Do not send the instrument back without previous arrangement 53 Installation 3 2 Front and back view Figure 1 Front view of the LT 200 thermostat 1 Protective lid 5 Touch sensitive Keys 2 20 mm digestion cuvettes 6 Display 3 13mm cuvette tests 7 Left heating block 4 Right heating block 54 Installation Figure 2 Back view of the LT 200 thermostat 1
12. r or series production number e Quantity 73 Contact Information 74 Section 9 Warranty liability and complaints The manufacturer warrants that the product supplied is free of material and manufacturing defects and undertakes the obligation to repair or replace any defective parts at zero cost The warranty period for instruments is 24 months If a service contract is taken out within 6 months of purchase the warranty period is extended to 60 months With the exclusion of the further claims the supplier is liable for defects including the lack of assured properties as follows all those parts that can be demonstrated to have become unusable or that can only be used with significant limitations due to a situation present prior to the transfer of risk in particular due to incorrect design poor materials or inadequate finish will be improved or replaced at the supplier s discretion The identification of such defects must be notified to the supplier in writing without delay however at the latest 7 days after the identification of the fault If the customer fails to notify the supplier the product is considered approved despite the defect Further liability for any direct or indirect damages is not accepted If instrument specific maintenance and servicing work defined by the supplier is to be performed within the warranty period by the customer maintenance or by the supplier servicing and these requirements are
13. ress OK to confirm the entry TenFerature __ sp UL a UE 4 Press the UP AND DOWN ARROW KEYS to set the temperature to a value between 37 C and 150 C Note Press OK to confirm the entry 65 Start up 5 Press the UP AND DOWN ARROW KEYS to set the time to a value between 0 and 480 minutes Note Press OK to confirm the entry 6 Press OK to confirm the program Note The program can be changed by pressing PROG Note Press the UP ARROW KEY to return to the program selection screen 5 5 Language If this setting needs to be changed press the left key while you switch on the instrument Press the RIGHT ARROW KEY to scroll through the menu Press the corresponding key to select the required language The thermostat is automatically initialized and LPS 5 the instrument is then ready for operation 66 Section6 Maintenance 6 1 Cleaning the Instrument The thermostat is a maintenance free instrument To ensure reliable and precise operation it must be kept clean e Before cleaning the thermostat you should switch it off unplug the power cord and allow the instrument to cool Wipe the instrument with a soft damp cloth Make sure that no water penetrates into the instrument during cleaning If a cuvette overflows or bursts or small amounts of liquid are spilled proceed as follows Switch off the thermostat unplug the power cord and allow the instrument to cool
14. the display Three beeps indicate that the temperature program is finished the thermostat cools 5 2 1 Thermometer symbol Thermometer symbol Description Heating block is heating Heating block has reached the set temperature Heating block is cooling 61 Start up 5 2 2 Clock symbol Clock symbol Description The remaining time counts down to zero 5 2 3 Beep functions Beep function Description Thermostat is ready for 1 beep operation after initialization 2 beeps Set temperature has been reached 3 beeps End of temperature program COD program cooling 4 beeps phase 80 C remove 5 2 4 Stop function _ 188 Start 62 cuvettes and invert a few times The stop function can be used to terminate a temperature program at any time 1 Select the program you want to stop 2 Terminate the temperature program with STOP Note Press the UP ARROW KEY to allow the temperature program to proceed without being terminated Start up 5 3 Selecting the program ect Froardn The temperature programs can be selected totally independently for the right and the left heating blocks If a change of setting is selected the user is prompted to specify whether the change concerns the right or the left heating block A choice of 3 permanently programmed temperature programs then appears and the user selects one by
15. thed mains power socket 115 230 Volt 5 15 50 60 Hz Switch on the thermostat by pressing the power switch on the back Note Do not switch the instrument off and on in rapid succession Always wait about 20 seconds before switching the instrument on again otherwise you may damage the electronic and mechanical systems The first time the instrument is turned on the language selection screen will appear section 5 5 on page 66 After initialization the instrument is ready for operation 59 Start up 2 Figure 3 Display and Keys of the LT 200 thermostat 1 Display 2 Touch sensitive Keys The instrument is operated using three touch sensitive keys located below the display Figure 3 The function of the key depends on the display If no function is shown for a specific key that key is not currently active After the instrument has been initialized the display always shows the most recent setting of the temperature programs 60 5 2 Start up Routine operation Prepare the cuvettes as described in the working procedure Switch on the thermostat and open the protective lid Place the cuvettes in a heating block and close the protective lid Select the required temperature program using the appropriate keys The thermostat heats to the set temperature and the time automatically counts down to zero The actual temperature and the remaining time are permanently visible in
16. tially or imminently hazardous situation which if not avoided could result in death or serious injury CAUTION Indicates a potentially hazardous situation that may result in minor or moderate injury Important Note Information that requires special emphasis Note Information that supplements points in the main text 47 General Information 2 1 2 Precautionary Labels Read all labels and tags attached to the instrument Personal injury or damage to the instrument could occur if not observed A symbol if noted on the instrument will be included with a danger or caution statement in the manual A This symbol if noted on the instrument references the instruction manual for operation and or safety information A Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after 12 August of 2005 In conformity with European local and national regulations EU Directive 2002 96 EC European electrical equipment users must now return old or end of life equipment to the Producer for disposal at no charge to the user Note For return for recycling please contact the equipment producer or supplier for instructions on how to return end of life equipment producer supplied electrical accessories and all auxiliary items for proper disposal AN This symbol when noted on the product indicated that the marked item can be hot and should not be touched without care
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