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BEHR behrotest K12, User Manual, Page: 24 / 24

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BEHR behrotest K12 User Manual Download Page 24

– 24 –

behrotest

®

 K8 / K12 / K20 / K16 / K24 / K40

0591

11

Technical Data

Nominal voltage

230 V~, 50 Hz

Temperature-control range

up to 430 °C, digitally adjustable

Time-setting range

0 to 999 minutes, digitally adjustable

Programs

10

Display

LCD

Spare Parts

Article

Art.-Nr.

Round-bottom digestion vessel 250 ml, for K 8 , K 12, K 20

B 0021 7959

PTFE stopper N, for K 8 L, K 12 L, K 20 L

B 0023 0803

Round-bottom digestion vessel 100 ml, for K 16 , K 24 , K 40 

B 0021 7960

PTFE stopper M, for K 16, K 24, K 40

B 0050 0481

Suction vessel 2-fold, for K 8

B 0023 1854

Suction vessel 3-fold, for K 12

B 0023 1855

Suction vessel 4-fold, for K 20

B 0023 1857

Suction vessel 4-fold, for K 16, K 24

B 0044 0884

Suction vessel 5-fold, for K 40

B 0044 0882

Collecting tube for exhaust collector, for K 8, K 12

B 0023 1853

Collecting tube for exhaust collector, for K 20

B 0023 1856

Collecting tube for exhaust collector, for K 16

B 0044 0886

Collecting tube for exhaust collector, for K 24

B 0044 0885

Collecting tube for exhaust collector, for K 40

B 0044 0883

Suction hose, Viton

®

, 1 m

B 0022 4985

Hose clip for the suction hose

B 0023 3672

Viton hose cutting for exhaust collector

B 0012 4089

Hose clip for the exhaust collector

B 0023 3673

Customer Service

behr Labor-Technik GmbH  

Spangerstraße 8  

D-40599 Düsseldorf  

Phone 

Customer service:  (+49 211) 7 48 47 31 

Spare parts: 

(+49 211) 7 48 47 17 

Telefax: 

(+49 211) 7 48 47 48 

E-mail: 

[email protected]

Summary of Contents for behrotest K12

Page 1: ...059111 behrotest K8 K12 K20 K16 K24 K40 Digestion Unit User s Manual ...

Page 2: ...aratus with clear and simple guidance For reasons of safety in use of the system please follow all safety warnings carefully These are designated in the text by a warning symbol Additional information which is useful and important for an understanding of the manner of operation of the apparatus is denoted by a stripe in the margin We wish you success in the use of the ...

Page 3: ...iance may be performed only by authorized specialist staff Danger of injury in case of breakage of glass Always adhere to your professional association s regulations when handling glass parts Care is required when using and handling acids and alkalis Danger of corrosive burns and injuries Adhere to the current Hazardous Substances Ordinance Hazard from toxic gases During the Kjeldahl digestion vap...

Page 4: ... Start menu 12 Configuring the K8 K12 K20 K16 K24 K40 to meet your needs 12 Creating a temperature program 14 Processing samples 16 Maintenance of your K8 K12 K20 K16 K24 K40 18 Cleaning the Exhaust Collector 18 Keep your Device Working Reliably as Long as Possible 19 Do Not Use Damaged Vessels 19 Always Use a Scrubber 19 Don t Leave Any Places Empty 19 Avoid bumping 20 Foaming 20 What do I do if ...

Page 5: ...use of the device The behrotest K8 K12 K20 K16 K24 K40 diges tion unit is used for heating of samples in the appropriate digestion tubes It is used in particular for quantitation of total nitrogen using the Kjeldahl digestion method The digestion unit can be heated to 430 C Always ensure that you have selected the temperature program appropriate to your samples Use the digestion tubes appropriate ...

Page 6: ... for sample vessels 1 4 Aeration slots 1 5 Mains plug 1 6 Mounting rail with 1 7 Hooks for suspending the sample rack while not in use 1 8 Cut outs for suspending the exhaust collector while not in use 2 Sample rack 2 1 Handles 2 2 Upper guide roller it also serves for suspending the sample rack on the hooks 1 7 2 3 Lower guide roller 2 4 Sample vessels Overview of the K8 K12 K20 K16 K24 K40 ...

Page 7: ...2 7 Middle part of the frame to hold the fold 2 6 of the front lid 2 8 Hooks for fastening the front lid on the lower frame bar of the sample rack 2 9 Lower bar of the frame to hold the hooks 2 8 of the front lid 3 Exhaust collector 3 1 Handles 3 2 Gas outlet 3 3 Socket for suction hose 3 4 Suction hose 3 5 Hooks for suspending the exhaust collector in the cut outs 1 8 on the mounting rail 4 Drip ...

Page 8: ...hose to the socket on the rear panel of the exhaust collector For the moment suspend the exhaust collector in the cut outs on the top end of the mounting rail Check that it is securely engaged Connect the exhauster hose to your process exhauster system Drip pan After finishing a digestion insert the drip pan below the exhaust collector Insert the drip pan on the rail under the bottom of the exhaus...

Page 9: ...ndles Lift the rack carefully Run it along the mounting rail while doing so Lift the rack upward until you hear it engage Lower the rack carefully onto the hooks in order to check that it has engaged correctly If this is not the case lower it again and repeat the above procedure Now the device is in the same position as before the start of a digestion Insertig the samples into the heating block Gr...

Page 10: ...cedure Parking the exhaust collector Grasp the exhaust collector using the two red handles Remove the exhaust collector from the sample rack and suspend it in the cut outs at the top end of the mounting rail Front lid on the sample rack Danger of burn The front lid gets hot o not try to remove the front lid while a dige stion is in progress The lid on the front side of the sample rack may be taken...

Page 11: ...e unit is switched on The main menu appears once the initialization routine has been com pleted The device is now ready for operation Don t wonder if the start menu appears in German This is the factory setting you ll soon see how to change it see p 12 13 Using the K8 K12 K20 K16 K24 K40 The operating unit You can program and operate your behrotest K8 K12 K20 K16 K24 K40 quite simply using a singl...

Page 12: ...perating button again The Start menu 1 If a program has been started or the unit is preheat ing the target temperature is displayed here If no program is running but a starting time has been selected the starting time is displayed here This box is otherwise blank 2 The temperature currently measured by the tempera ture sensor is always displayed here 3 Start menu item The temperature program most ...

Page 13: ...and then press it If an illogical value is entered such as 26 for the hours or 61 for minutes for example the unit will reject the value and instead jump back to the first digit of the setting Use to move to the next page of this menu Second page Autostart settings START TIME AUTOSTART OFF 11 20 The Autostart settings can be selected on this page You can for example set the unit to preheat at a sp...

Page 14: ...ter the settings for this step TIME FUNCTION TEMPERATURE Program 01 05 350 120 T The Program No and the Program Step No which you are currently editing are shown in the top line Program 07 05 for example indicates the fifth step in Program No 07 This screen page will change its appearance depending on the Function you select There are the following possibilities Function T Temperature step TIME FU...

Page 15: ...e Every program memory slot consists of ten slots for pro gram steps The K8 K12 K20 K16 K24 K40 works through these ten program steps in sequence if it does not previously encounter an End step The last program step of every program must there fore be an End step An End step is only not needed if the program actually has the maximum of ten steps A program can thus be written as follows For the fir...

Page 16: ... menu by selecting repeatedly Preheating the digester Danger of burns The inner zone of the heating block gets hot Never touch the hot glasses or the area of the heating block around the mounting holes with the bare hands If necessary preheat the digester to the starting temperature Prog 01 01 022 C Select the ON menu item in the Start menu The device will now start to preheat to the starting temp...

Page 17: ... touch the hot glasses or the area of the heating block around the mounting holes with the bare hands Always remove the samples from the heating block using the sample rack and allow them to cool as described here Caution the heating block and the tubes get 400 C hot If the sample vessels are left in the heating block cooling down they may get jammed or even cracked due to the different expansion ...

Page 18: ...t Collector Danger of injury in case of breakage of glass Always adhere to your professional association s regulations when handling glass elements Caution there may be sulphuric acid in the exhaust collector It might burn you Adhere to the current Hazardous Sub stances Ordinance If during a digestion the exhaust collector has been contaminated by sample components you can easily clean it Cautious...

Page 19: ...dhere to your professional association s regulations when handling glass parts Opening the Housing of the Exhaust Collector Undo the four screws on the rear panel of the housing Undo the four screws on the roof of the housing Take the panel off that forms the rear and the roof of the housing On top of the suction vessels you see the two crossbars that are fixing them They had held the roof panel b...

Page 20: ...ce the collecting tube you need to take out all the suction vessels this way Insert the new suction vessel into the intermediate bottom and push the nozzle into the viton hose cut ting Secure the joint of the hose cutting and the new suction vessel by pushing the hose clip to the upper position again If need be shift the collecting tube and the suction vessels connected to it in such a way that th...

Page 21: ...zzle in the rear of the exhaust collector Make sure to insert the exhaust collector properly on the sample vessels The suction nozzles must reach into the vessels the uppermost disk on the nozzles will rest on the rim of the vessel Adjust the suction flow rate in such a way that the white fumes are sucked off but no vacuum will arise Don t Leave Any Places Empty The suction air current will always...

Page 22: ...rt reacting with the sulfuric acid in the cold and the longer it takes the sample to reach digestion temperature the higher the foam will rise In these cases it is better to have the sample come to digestion temperature as quick as possible so the foam will collapse soon Which means preheat the block and prepare the sample immediately before starting the digestion An anti foam agent can neutralize...

Page 23: ... heating system or the triac control system of the digester unit is defective Notify the behr after sales service 011 The device heats without stopping 100 General error Resetting the thermal cut out You find the thermal cut out in the rear of the device In the boring above the power socket there is a small green lever Press this lever downwards with a screw driver It will engage with a click If i...

Page 24: ...fold for K20 B00231857 Suction vessel 4 fold for K16 K24 B00440884 Suction vessel 5 fold for K40 B00440882 Collecting tube for exhaust collector for K8 K12 B00231853 Collecting tube for exhaust collector for K20 B00231856 Collecting tube for exhaust collector for K16 B00440886 Collecting tube for exhaust collector for K24 B00440885 Collecting tube for exhaust collector for K40 B00440883 Suction ho...

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