Page 4
Technical Communication Metrohm AG CH-9100 Herisau techcom@metrohm.com This documentation is protected by copyright. All rights reserved. This documentation has been prepared with great care. However, errors can never be entirely ruled out. Please send comments regarding possible errors to the address above.
Connecting the instrument to the power grid ....23 Mounting the cable guide and the safety shield ..... 24 4 Automation runs Dipping in special ............... 26 Dipping in special 2 ............27 Double dipping ..............28 Rinsing in sample ..............29 ■■■■■■■■ 869 Compact Sample Changer...
Page 6
Diagnosis functions ............... 54 7 Parameters Automation: Dipping in special ......... 55 Automation: Dipping in special 2 ........56 Automation: Double dipping ..........57 Automation: Rinsing in sample ......... 58 Automation: Rinsing in special .......... 59 ■■■■■■■■ 869 Compact Sample Changer...
Page 7
10.1 Lift ..................67 10.2 Turntable ................67 10.3 Interfaces and connectors ..........67 10.4 Power connection ............... 67 10.5 Ambient temperature ............68 10.6 Reference conditions ............68 10.7 Dimensions ................68 11 Accessories Index ■■■■■■■■ 869 Compact Sample Changer...
Page 8
..................... 16 Figure 12 Remote cable with lettering ............. 17 Figure 13 Remote connection 869 Compact Sample Changer - Titrino plus ..18 Figure 14 Remote connection Dosimat plus - 869 Compact Sample Changer - Titrino plus ..................18...
1 Introduction Instrument description The 869 Compact Sample Changer is a sample changer for titration with a wide variety of applications. It is the central control instrument in an auto- mation system that in addition to a titrator, can also include a Dosimat (for adding auxiliary solutions) and a pump for rinsing and aspirating the sam- ple vessels.
This symbol draws attention to a possible hazard due to heat or hot instrument parts. WARNING This symbol draws attention to a possible biological hazard. CAUTION This symbol draws attention to possible damage to instruments or instrument parts. ■■■■■■■■ 869 Compact Sample Changer...
The electrical safety when working with the instrument is ensured as part of the international standard IEC 61010. WARNING Only personnel qualified by Metrohm are authorized to carry out service work on electronic components. WARNING Never open the housing of the instrument. The instrument could be damaged by this.
Personnel safety WARNING Wear protective goggles and working clothes suitable for laboratory work while operating the 869 Compact Sample Changer. It is also advisable to wear gloves when caustic liquids are used or in situations where glass vessels could break.
WARNING The 869 Compact Sample Changer is not suitable for utilization in bio- chemical, biological or medical environments in its basic equipment ver- sion.
The correct disposal of your old instrument will help to prevent negative effects on the environment and public health. More details about the disposal of your old instrument can be obtained from your local authorities, from waste disposal companies or from your local dealer. ■■■■■■■■ 869 Compact Sample Changer...
■■■■■■■■■■■■■■■■■■■■■■ 2 Overview of the instrument 2 Overview of the instrument Figure 1 Front 869 Compact Sample Changer Safety shield Sample rack With knurled screws for mounting. The For 11 sample beakers and 1 rinsing beaker safety shield can be folded up.
■■■■■■■■■■■■■■■■■■■■■■ Figure 2 869 Compact Sample Changer rear Tubing and cable guide Remote connector For connecting instruments with a remote interface. D-sub, 9-pin. USB (OTG) connector Stirrer connection For connecting printers, USB flash drives, For 802 Stirrer (rod stirrer). USB hubs, etc.
The instrument should be protected against excessive temperature fluctua- tions and direct sunlight. Removing the safety shield and cable guide Figure 3 Removing shields ■■■■■■■■ 869 Compact Sample Changer...
1 Insert the rod stirrer (802 Stirrer) from above into the rear opening of the titration head. 2 Guide the 6.1909.050 stirring propeller over the drive shaft of the rod stirrer from below and press firmly. ■■■■■■■■ 869 Compact Sample Changer...
Installing rinsing nozzles and aspiration tip 1 Insert the three 6.2740.020 spray nozzles into the titration head according to the illustration. The position of the individual spray noz- zles can also be adjusted as required in terms of height. ■■■■■■■■ 869 Compact Sample Changer...
2 Manually screw the 6.1805.420 rinsing tubings already mounted on the titration head firmly into the openings with M6 threaded bores on the distributor. 3 Manually screw the 6.1805.200 aspiration tubing with M8 thread firmly into the remaining opening on the distributor. ■■■■■■■■ 869 Compact Sample Changer...
5 Use the four knurled screws to remount the cable and tubing cover. CAUTION Close the safety shield again after the titration head has been equipped. The 869 Compact Sample Changer is not permitted to be operated unless the safety shield is correctly mounted. Connecting the stirrer A DIN socket for connecting a rod stirrer 802 Stirrer is located on the rear of the instrument.
3.5 Connecting a keyboard, printer and other USB devices Connecting a keyboard, printer and other USB devi- The 869 Compact Sample Changer has a USB (OTG) connector. Use the provided 6.2151.100 adapter USB MINI (OTG) - USB A for connecting USB devices as e.g.
USB hubs are available in specialty stores in a number of differ- ent models. The USB (OTG) connector of the 869 Compact Sample Changer has no such hub. The 6.2147.000 numerical USB keypad has a USB hub and two USB connectors.
Connecting the 6.2147.000 USB keyboard with USB stick and printer Remote connections The 869 Compact Sample Changer can be used as a control instrument for a simple automation system with a large variety of different instru- ments. Even older Metrohm instruments can thus be integrated into an automated analysis system.
■ directly at the 869 Compact Sample Changer. The signal lines at the metallic plug (connector at the 869 Compact Sam- ple Changer or at the Remote 2 connector of the 843 Pump Station) are divided up into two different strands. The cable end that is printed with 865 must be connected with a 6.2141.240 or 6.2136.010 Dosimat con-...
Figure 13 Remote connection 869 Compact Sample Changer - Titrino plus The sample series is started on the 869 Compact Sample Changer 869 — Titrino plus — Dosimat plus For determinations with addition of auxiliary solutions, without rinsing or aspiration.
Remote connection 869 Compact Sample Changer - 843 Pump Station - Titrino plus At the 843 Pump Station, the 869 is connected to Remote 1, the Titrino plus to Remote 2. Pump 1 is used for rinsing the electrode, Pump 2 for aspirating the sample solution.
XDOS mode. The volume of the auxiliary solution is defined at the Dosimat plus. At the 843 Pump Station, the 869 is con- nected to Remote 1, the Titrino plus to Remote 2. Pump 1 is used for rinsing the electrode, Pump 2 for aspirating the sample solution.
■■■■■■■■■■■■■■■■■■■■■■ 3 Installation this cable. The sample series is started on the 869 Compact Sample Changer 869 — Titrino For determinations with a Titrino of the 7xx series, without rinsing or aspi- ration. 869 Compact Sample Changer Titrino 6 . 2 1 4 1 . 2 5 0 / 6 .
The Dosimat plus is operated in DIS mode. The volume of the auxiliary solution is defined at the Dosimat. At the 843 Pump Station, the 869 is connected to Remote 1, the Titrino plus to Remote 2. Pump 1 is used for rinsing the electrode, Pump 2 for aspirating the sample solution.
Pump Unit - Remote Box - 867 pH Module / Conductivity Module The 843 Pump Station is controlled by the 869 Compact Sample Changer. The 6.2148.010 Remote Box must be connected to MSB 1 of the 867 pH Module or the 856 Conductivity Module. The sample series is started on...
Fasten the safety shield with the four black knurled screws to the sides of the tower. The safety shield can be folded up if needed once each of the lower knurled screws has been slightly loosened. ■■■■■■■■ 869 Compact Sample Changer...
Page 33
■■■■■■■■■■■■■■■■■■■■■■ 3 Installation WARNING The 869 Compact Sample Changer may not be operated without a safety shield! ■■■■■■■■ 869 Compact Sample Changer...
■ Wait for Rinsing time ■ Switch off the stirrer and move the lift upward ■ Wait for Dripping time ■ After the last sample: Lower the lift in special beaker to work position. ■ ■■■■■■■■ 869 Compact Sample Changer...
Move to rack position 11 ■ Lower the lift to work position and switch on the stirrer ■ Wait for Rinsing time ■ Switch off the stirrer and move the lift upward ■ Wait for Dripping time ■ ■■■■■■■■ 869 Compact Sample Changer...
■ Wait for Rinsing time ■ Switch off the stirrer and move the lift upward ■ Wait for Dripping time ■ After the last sample: Lower the lift in special beaker to work position ■ ■■■■■■■■ 869 Compact Sample Changer...
Switch off the rinsing pump and wait for Aspiration time again ■ Switch off the aspiration pump and move the lift upward ■ Wait for Dripping time ■ After the last sample: Move to special beaker position ■ Lower the lift to work position ■ ■■■■■■■■ 869 Compact Sample Changer...
Wait for Dripping time ■ After the last sample: Lower the lift in special beaker to work position ■ Switch on the rinsing pump and wait for Rinsing time ■ Switch off the rinsing pump ■ ■■■■■■■■ 869 Compact Sample Changer...
Dosing auxiliary solutions The addition of an auxiliary solution can be carried out with a 6xx/7xx Dosimat or a Dosimat plus. This is connected via remote cable to the 869 Compact Sample Changer (see chapter 3.6.2, page 17). The method runs of the 869 Compact Sample Changer start the dosing on the Dosimat immediately prior to a determination.
Proceed as follows: Keep the red [STOP] key pressed down for at least 3 s. ■ A progress bar is displayed. If the key is released during this time, then the instrument will not be switched off. ■■■■■■■■ 869 Compact Sample Changer...
5 Operation Fundamentals of operation 5.2.1 The keypad Figure 23 Keypad 869 Compact Sample Changer BACK Apply the input and exit the dialog. ⇧ ⇩ Move the selection bar either up or down by one line at a time. Select the character to be entered in the text editor.
Editing function Description Accept The modification is applied and the editing dialog is exited. Cancel The editing dialog is exited without applying the modification. Clear The content of the input field is deleted com- pletely. ■■■■■■■■ 869 Compact Sample Changer...
The [BACK] key has the same function as Accept. Methods The 869 Compact Sample Changer works with process methods that are based on specified method templates. Individual working steps of a method run can be configured individually, depending on the application.
■ The method template is now loaded and is displayed in the main dia- log under Method. If a new method has been created, then the individual parameters can be modified under Menu ▶ Parameters. ■■■■■■■■ 869 Compact Sample Changer...
Press [OK]. ■ The text editor opens. Enter a method name (max. 12 characters) and apply with ■ Accept or [BACK]. Press [BACK]. ■ The method will be saved and the method table is displayed. ■■■■■■■■ 869 Compact Sample Changer...
This function is possible only if a USB flash drive is connected as an external storage medium. To export a method, proceed as follows: 1 Opening the method table In the main dialog, select Method and press [OK]. ■ The method table with the stored methods opens: ■■■■■■■■ 869 Compact Sample Changer...
Entering the sample data, such as sample size, etc. (activate Sample ■ table/Silo) Loading the determination method ■ Deactivation of the Autostart function ■ Rinsing the electrode ■ Rinsing the tubing (PREP function) ■ ■■■■■■■■ 869 Compact Sample Changer...
The value for the number of samples remains saved for the next sam- ple series. The position of the first sample is increased with each method run. You can still cancel the start of the sample series at this time with [BACK] or [STOP]. ■■■■■■■■ 869 Compact Sample Changer...
The method run is stopped. The sample series cannot be resumed. 5.4.2 Pausing a sample series and continuing Pausing a sample series A method run of the 869 Compact Sample Changer can be paused and then continued again. The connected instruments are however not paused. NOTICE...
Page 50
2 Press the [OK] key and enter the number of samples that still need to be processed. The current sample must be taken into account. 3 Press the [START] key. ■■■■■■■■ 869 Compact Sample Changer...
■ The report is printed out. The following reports can be printed out manually: Parameters Report with all method parameters of the loaded method. System System report with system settings, solution list, external devices, etc. ■■■■■■■■ 869 Compact Sample Changer...
At the same time, the starting position is reset (Next sample pos.) to 1 for the start of the next sample series. The rack position display is always updated as soon as the rack is in the new position. ■■■■■■■■ 869 Compact Sample Changer...
Switch off the stirrer if it is switched on. Stir- Reduce the stirring rate by one step. Stir+ Increase the stirring rate by one step. The status and the configured stirring rate are displayed in the main dia- log. ■■■■■■■■ 869 Compact Sample Changer...
Page 54
"+": counterclockwise rotation ■ "–": clockwise rotation ■ –15 - 15 Input range Default value The stirring rate can also be modified when the stirrer is switched off. ■■■■■■■■ 869 Compact Sample Changer...
Time Current time. Only valid numbers can be entered. Format: hh:mm:ss Date Current date. Only valid numbers can be entered. Format: YYYY:MM:DD Language Setting the dialog language. An additional language can be selected besides English. ■■■■■■■■ 869 Compact Sample Changer...
Page 56
If the limited dialog for routine operation is activated, then the expert dialog cannot be activated during ongoing operation. To change the dialog type, the 869 Compact Sample Changer must be switched off and then back on again. The expert dialog can be forced as soon as the instrument is started up again.
Page 57
Beep If this parameter is activated, then a short beep will sound in the following cases: When a key is pressed. ■ At the end of the determination. ■ on | off Selection Default value ■■■■■■■■ 869 Compact Sample Changer...
The structure within this directory appears as follows: Backup All of the files of the backup are stored in this directory. The directory is created as soon as a backup is created for the first time. ■■■■■■■■ 869 Compact Sample Changer...
60 mm Starting pos. lift After the 869 Compact Sample Changer has been switched on, the lift moves all the way to the top (shift position) for initialization of the drive. If desired, the lift can be moved back to working height.
Program files They are instrument-specific. The file name has the following structure: 5XXXyyyy.bin where XXX = Instrument type (e.g. 848 for the 848 Titrino plus) yyyy = Program version ■■■■■■■■ 869 Compact Sample Changer...
Page 61
Press [OK]. ■ The selection list with the program and language files present on the USB flash drive opens. 4 Selecting the file Use the arrow keys to select the required file. ■ Press [OK]. ■ ■■■■■■■■ 869 Compact Sample Changer...
No user intervention is required. 6.5.2 Diagnosis functions Electronic and mechanical functional groups in Metrohm instruments can and should be checked as part of regular maintenance by specialist per- sonnel from Metrohm. Please ask your local Metrohm representative regarding the precise terms and conditions involved in concluding a corre- sponding maintenance agreement.
The algebraic sign of the stirring rate changes the stirring direction. When the stirrer is viewed from above, this means: "+": counterclockwise rotation ■ "–": clockwise rotation ■ Input range –15 - 15 Default value ■■■■■■■■ 869 Compact Sample Changer...
The algebraic sign of the stirring rate changes the stirring direction. When the stirrer is viewed from above, this means: "+": counterclockwise rotation ■ "–": clockwise rotation ■ Input range –15 - 15 Default value ■■■■■■■■ 869 Compact Sample Changer...
The algebraic sign of the stirring rate changes the stirring direction. When the stirrer is viewed from above, this means: "+": counterclockwise rotation ■ "–": clockwise rotation ■ Input range –15 - 15 Default value ■■■■■■■■ 869 Compact Sample Changer...
The algebraic sign of the stirring rate changes the stirring direction. When the stirrer is viewed from above, this means: "+": counterclockwise rotation ■ "–": clockwise rotation ■ –15 - 15 Input range Default value ■■■■■■■■ 869 Compact Sample Changer...
9.2, page 63. The optimum stirring rate can be tested in the manual control. The algebraic sign of the stirring rate changes the stirring direction. When the stirrer is viewed from above, this means: "+": counterclockwise rotation ■ ■■■■■■■■ 869 Compact Sample Changer...
Page 68
■■■■■■■■■■■■■■■■■■■■■■ 7.5 Automation: Rinsing in special "–": clockwise rotation ■ –15 - 15 Input range Default value ■■■■■■■■ 869 Compact Sample Changer...
8 Operation and maintenance 8 Operation and maintenance The 869 Compact Sample Changer requires appropriate care. Excess con- tamination of the instrument may result in functional disruptions and a reduction in the service life of the sturdy mechanics and electronics of the instrument.
Pin assignment of the remote interface Figure 24 Pin assignment of remote socket and remote plug The above figure of the pin assignment applies for all Metrohm instru- ments with 9-pin D-Sub remote connector. Table 1 Inputs and outputs of the remote interface Pin No.
(depends on the product version) can be calculated with the following for- mula: Rotational speed/min (r/min) = 125 · Stirring rate Example: Configured stirring rate: 8 Rotational speed in revolutions per minutes = 125 · 8 = 1,000 ■■■■■■■■ 869 Compact Sample Changer...
The respective editing dialog must be opened for the numerical input. Table 2 Key assignment Key of the 869 Compact Sam- Key on the numerical USB ple Changer or function in the keypad...
■■■■■■■■■■■■■■■■■■■■■■ 9 Appendix Key of the 869 Compact Sam- Key on the numerical USB ple Changer or function in the keypad editing dialog [BS] (backspace) Clear [Del] Accept [Home] 9.3.2 Printer The range of USB printers available is extremely varied and constantly changing.
Page 74
If the request is not confirmed within 8 s, then the procedure will be canceled. Press [BACK] twice. ■ Initialization is started. The process takes approximately 80 s. The instrument will be automatically restarted after successful initializa- tion. ■■■■■■■■ 869 Compact Sample Changer...
USB (OTG) connec- For connecting USB devices. Remote connector For connecting instruments with a remote interface. 10.4 Power connection Potential 100 - 240 V Frequency 50 - 60 Hz Power consump- 45 W tion Lock 1.0 ATH ■■■■■■■■ 869 Compact Sample Changer...
The PDF file with the accessories data is created. NOTICE Once you have received your new product, we recommend download- ing the accessories list from the Internet, printing it out and keeping it together with the manual for reference purposes. ■■■■■■■■ 869 Compact Sample Changer...
Expert dialog ......48 Service ........3 Printer ........ 52, 65 Special position ......7 Connect ......14 Spiral band ....... 13 Program crash ......65 FEP tubing ........ 11 Splash protection ......7 FEP tubings ....... 12 ■■■■■■■■ 869 Compact Sample Changer...
Page 79
Supply voltage ......3 Program version ....52 Work position ......51 Switch off ......... 32 USB .......... 64 Working height ......51 Switch on ......... 32 Numerical keypad ....64 System initialization ....65 ■■■■■■■■ 869 Compact Sample Changer...
Need help?
Do you have a question about the 869 and is the answer not in the manual?
Questions and answers