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7 Maintenance and repairs

55

K-439

Operation Manual, Version B

7 .5 .2

500 ml sample tube support spring

The 500 ml tube rack is equipped with a tube holder containing five sample tube support springs.
Each flat spring must be freely rotatable by a small amount. If swivelling is not possible, exchange the
rake!

Note

• Rinse the tube holder with water after use to avoid corrosion.
• Store it dry and clean after use.

7 .6

Display cover

The display cover is equipped with double-faced adhesive tape. If it is strongly contaminated or
damaged, replace it with a new one.

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Содержание SpeedDigester K-439

Страница 1: ...11593351 en SpeedDigester K 439 Operation Manual...

Страница 2: ...serves the right to make changes to the manual as deemed necessary in the light of experi ence especially in respect to structure illustrations and technical detail This manual is copyright Informatio...

Страница 3: ...uction 250ml sample tubes 15 3 2 Technical data 16 3 3 Materials used 17 4 Description of function 18 4 1 Functional principle 18 5 Putting into operation 19 5 1 Installation site 19 5 2 System fixati...

Страница 4: ...7 1 Customer service 51 7 2 General condition and cleaning instructions 51 7 2 1 Breakage of glassware inside a housing chamber 52 7 2 2 Liquid ingress into the instrument 52 7 3 Glass component cond...

Страница 5: ...the instrument without the prior written agreement of Buchi Unauthorized modifications may affect the system safety or result in accidents Technical data are subject to change without notice NOTE The...

Страница 6: ...which will emerge during digestion In any case all exhausts and fumes leaving the system or assemblies such as Scrubber or water jet pump have to be removed instantly inside a fume hood This is mandat...

Страница 7: ...ch if not avoided could result in death or serious injury CAUTION Indicates a hazardous situation which if not avoided may result in minor or moderate injury no NOTICE Indicates possible property dama...

Страница 8: ...Meaning Explosive gases explosive environment Explosive material Fire hazard Harmful to life forms Hot item hot surface Device damage Inhalation of substances Chemical burns by corrosives Fragile comp...

Страница 9: ...s situations emanating from residual dangers by giving appropriate counter measures However risks to users property and the environment can arise when the instrument is damaged used carelessly or impr...

Страница 10: ...moderate cuts by sharp edges Do not touch defective or broken glassware with bare hands Do not touch thin metal edges CAUTION Risk of burns by hot machine parts and glassware Do not touch hot parts or...

Страница 11: ...500ml racks 2 5 3 Personal protective equipment Always wear personal protective equipment such as protective eye goggles protective clothing and gloves The personal protective equipment must meet all...

Страница 12: ...corresponding chamber 2 6 General safety rules Responsibility of the operator The head of the laboratory is responsible for training his her personnel The operator shall inform the manufacturer withou...

Страница 13: ...a system configuration Rack Suction module Insulation plate fireclay insert Sample tubes The scope of delivery depends on the ordered system configuration and can be checked according to the individua...

Страница 14: ...c mod Spare part set of 6 044495 Filter funnel for H2 O2 suc mod Spare part set of 6 044494 Set circular spring and holder Spare part set of 6 11055984 Bed plate for 300ml racks OPTIONAL 11055943 3 1...

Страница 15: ...e 11055850 2x Connectors to suction module Adapter and plug 11055367 2x EPDM hose set Hoses and t piece 11056219 1x Insulation plate fireclay Insertion for 250ml tubes 11055877 2x Rack 6 place for 250...

Страница 16: ...cess to hazardous parts e g electrical conductors moving parts and the ingress of solid foreign objects with a diameter of 12 5mm 0 No protection of the equipment inside the enclosure against harmful...

Страница 17: ...icic acid Heating chamber SiO2 SiC Ceramic fiber felt Heating chamber Calcium silicate Insulation plate Phlogopite mica Preheat cover Plastic Front hood PBT Front panel under keypad PP Display cover P...

Страница 18: ...overview 3 2 1 4 Environmental air inlet dangerous vapors are drawn away Condensation zone Infrared heating Boiling digesting sample Insulation plate fireclay insertion Acid vapor outlet to suction un...

Страница 19: ...ith a heat and acid resistant lining Do not place any objects on top or below the instrument The instrument must be installed with a safety clearance of not less than 5 cm to any other objects or wall...

Страница 20: ...op the instrument or its transport box Place the instrument on a stable even and vibration free surface Keep limbs out of crushing zone 5 2 System fixation In earthquake prone regions the instrument m...

Страница 21: ...s and regulations External connections and extension lines must be provided with an earthed conductor lead 3 pole couplings cord or plug equipment All used power cords shall be equipped with moulded p...

Страница 22: ...h are already predefined by default A method consists of Preheat step 4 possible temperature steps and cooling down time The programmed method is visualized graphically and during the digestion proces...

Страница 23: ...e with suction hoses Type plate Fuse type Fuse holders Power socket Mains socket for Scrubber connection To access the glass fuses on the rear side use a slotted screwdriver Slightly push in the slott...

Страница 24: ...uttons Button Functionality Start Starts a process Stop Stops a process Increases values such as time or temperature Selects adjustments Decreases values such as time or temperature Selects adjustment...

Страница 25: ...save a method History View the last 3 digestion processes Manual Start a manual digestion choose one or both rows to be active start the heating reset time Settings Language Display Contrast 15 to 85...

Страница 26: ...within the entries of a screen Save Save a method Enter Confirm the entry of a character when naming a method Preheat wait hold temp after preheat start step 1 of digestion by pressing START continue...

Страница 27: ...anual mode The temperature of the heating chamber is 70 C i e the heating elements are hot Scrubber is running Selected row s Data of last last but one and last but two digestion process in History me...

Страница 28: ...of typical settings which have to be defined before the instrument is used for the first time These settings do not have to be changed as long as the instrument is not updated or extended by any addi...

Страница 29: ...mperature by using the buttons Select the row s to be active by pressing Row and then the buttons Then press OK to confirm Now press START The digestion is started Set and actual temperatures as well...

Страница 30: ...heese egg fertilizer for e g solid and liquid fertilizers function test OQ meat products for e g salami boiled sausage micro kjeldahl for e g milk npn ncn in milk nuts for e g hazelnuts almonds pasta...

Страница 31: ...xisting Buchi method can be modified and saved under a new method name Select Main Menu Methods Highlight the method that should be edited by using the up or down buttons Press and afterwards Now pres...

Страница 32: ...pe If the racks are cooled outside the heating chamber the cool down step in the corresponding method must be set to 30 min Press Save Now enter a name for the new method by highlighting individual le...

Страница 33: ...n the instruments software cannot be deleted A customer specific method can be deleted as follows Select Main Menu Methods Highlight the method that should be deleted by using the up or down buttons P...

Страница 34: ...ons Then press OK to confirm The preheat function is automatically set to Preheat continue when the timer is activated To change the Preheat function press Preheat and select wait or continue using th...

Страница 35: ...n press OK to confirm The preheat function is auto matically set to Preheat continue when the timer is activated To change the Preheat function press Preheat and select wait or continue using the butt...

Страница 36: ...d sample tubes Section 6 7 1 and 6 7 2 describes the standard procedure for preparing a rack with sample tubes of 300ml or 250ml When 500ml tubes are being used additionally refer to section 6 7 4 Not...

Страница 37: ...ds 6 7 1 Kjeldahl digestion preparing sample tubes During the preparation process handling with strong acid and other dangerous substances is inevi table Thus all steps must be performed under safe la...

Страница 38: ...eliable and reproducible digestion result the quality of sample material and the peroxide must be free of impurities and of adequate amount Filling of a sample tube Take the sample tubes sequentially...

Страница 39: ...he plastic adapter piece to the suction module 1 Mount the hose connector at the EPDM hose 2 of the suction module i e Scrubber B 414 or water jet pump The connector at the EPDM hose can be stored tem...

Страница 40: ...e black handles 3 aside Carefully push down the suction module 4 straight onto the sample tubes and shift the handles back into locking position The metal clips must snap in to securely lock the handl...

Страница 41: ...bber When operating with 3rd party sample tubes no insulation caps and glass caps are available In this case all positions must be equipped with samples When operating with 300ml sample tubes close un...

Страница 42: ...k at the handlebars when installing the rake Check for proper seating and safe position of the glassware before lifting the rack from the carrier 4 5 Glass cap for unused positions When the digestion...

Страница 43: ...e safe handling and best performance Note Application notes are available for various samples at Buchi These notes work as digestion recipes and give detailed instructions how to process specific samp...

Страница 44: ...Prepare the sample tubes according to the type of digestion under safe conditions The samples are now ready to be digested 6 9 2 Starting a digestion process 4 Install the rack s according to section...

Страница 45: ...sample via filter funnel Exchange worn out or defective parts before digestion Handle peroxides in a fume hood Do not bring peroxides into contact with highly combustible material Dispenser with perox...

Страница 46: ...OK If the Scrubber is not connected let the rack s cool down below 40 C first then switch off the Scrubber or water jet pump When the info message Digestion done appears confirm it with OK The suction...

Страница 47: ...ousing Racks with 500ml sample tubes must not be installed in this position see illustration 300 250ml rack in side position DO NOT USE THIS POSITION FOR 500ml RACKS TUBES Note A color change takes pl...

Страница 48: ...rash between the sample tubes and the housing Nonobservance will lead to hazardous situations especially when the sample tubes are filled and hot WARNING Death or serious injuries at glass breakage by...

Страница 49: ...off the suction module s after a digestion process and as a space saving way to securely store a suction module Stand with drip tray illustration with suction unit Screw and holder knob Installing a...

Страница 50: ...of it need prior written permission of the manufacturer WARNING Serious chemical burns by corrosives Observe supplementary data sheets of all used chemicals Handle corrosives in well ventilated envir...

Страница 51: ...contact one of these offices The customer service offers the following Spare part delivery Repairs Technical advice 7 2 General condition and cleaning instructions Check the housing for visible defect...

Страница 52: ...ly dry before reconnecting the device to mains 7 2 2 Liquid ingress into the instrument In case of liquid ingress into the housing the instrument is not safe to use anymore Follow the instruc tions be...

Страница 53: ...bes Do not use cold water to cool down the sample tubes after digestion The resulting temperature shock might lead to tension and cracks in the glass Make sure that the sample tubes are placed as illu...

Страница 54: ...0ml tube rack is equipped with six sample tube support assemblies Each assembly includes a circular spring and a black plastic retaining ring with notches Three of six notches are equipped with small...

Страница 55: ...tube support springs Each flat spring must be freely rotatable by a small amount If swivelling is not possible exchange the rake Note Rinse the tube holder with water after use to avoid corrosion Stor...

Страница 56: ...s full You have to delete some methods Delete some methods and add new methods 6 Heating finished Heating process is finished take racks in cooling position Press OK to confirm it 7 Digestion done Dig...

Страница 57: ...jet pump not switched on or functioning correctly Defective or clogged sealing glassware or tubes Stop the digestion process Check and clean all parts See manuals of the Scrubber water jet pump on ho...

Страница 58: ...ting Hours This submenu enables the user to view the operating hours of Power on Time xx h Heating Time xx h Row Left xx h Row Right xx h 8 2 4 Unit Information This submenu indicates some unit inform...

Страница 59: ...e Replace the defective fuse see technical data for fuse type Reconnect the SpeedDigester to the mains WARNING Death or serious burns by electric current Switch off the instrument Disconnect the power...

Страница 60: ...sty residues before packaging the instrument WARNING Death or serious poisoning by contact or incorporation of harmful substances Wear safety goggles Wear safety gloves Wear a laboratory coat Clean th...

Страница 61: ...nd recycled correctly by a specialist for disposal For disposal of liquids and consumables such as catalyst or acid see data sheets of these chemicals You have to follow valid regional and local laws...

Страница 62: ...from the device is free of contamination e g that chemicals solvents or residues of pumped media have been drained prior to shipment No hazard emanates from the device 1 B Declaration for dangerous go...

Страница 63: ...ument serial and part numbers for warranty clearance when ordering spare parts 10 1 Spare parts optional accessories and consumables Example Spare parts Description Order no Mains cable CH type 10021...

Страница 64: ...120V 037883 Scrubber B 414 with condenser 100V 037884 Scrubber connection cable 014738 Condensate bottle 4L for Scrubber B 414 048668 Water jet pump 02913 Display cover 11055329 IQ OQ set complete 11...

Страница 65: ...ts 65 K 439 Operation Manual Version B Optional parts Description Order no Stand with drip tray 11055216 Digestion rod set of 10 043087 Consumables Description Order no Kjeldahl tablets Hg Se free 250...

Страница 66: ...ause harmful interference in which case the user will be required to correct the interference at his own expense Fran ais Cet appareil a t test et s est av r conforme aux limites pr vues pour les appa...

Страница 67: ......

Страница 68: ...n zh India BUCHI India Private Ltd IN Mumbai 400 055 T 91 22 667 75400 F 91 22 667 18986 india buchi com www buchi com in en Indonesia PT BUCHI Indonesia ID Tangerang 15321 T 62 21 537 62 16 F 62 21 5...

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