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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.
4 Transport and storage Checking the delivery ............14 Storing the packaging ............14 5 Installation Installation by Metrohm ............ 15 6 Initial start-up Initial start-up by Metrohm ..........16 7 Operation and control Operation ................17 ■■■■■■■■ OMNIS Cylinder unit...
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■■■■■■■■■■■■■■■■■■■■■■ Table of contents Dismantling the cylinder unit ..........17 Mounting the cylinder unit ..........20 Storing the cylinder unit ............ 23 Refitting the cylinder unit ..........23 8 Maintenance Cylinder unit – General maintenance ........ 24 Maintenance agreement ............ 25 Cleaning the product ............
Volume 20 mL 6.03001.250 Cylinder unit 50 mL Volume 50 mL The required numbers for the customer service can be found on the type plate (see example): (01) = External article number (21) = Serial number (240) = Metrohm article number ■■■■■■■■...
NOTICE Information on the accessories for the respective product version can be obtained either on the Internet at http://www.metrohm.com via your regional Metrohm representative. About the documentation NOTICE Please read through this documentation carefully before putting the product into operation.
■■■■■■■■■■■■■■■■■■■■■■ Overview Additional information Additional information concerning the topic can be found: in the software help ■ in the Metrohm information portal on the Internet https:// ■ guide.metrohm.com 1.4.1 Accessories Up-to-date information on the scope of delivery and optional accessories for your product can be found on the Internet.
■■■■■■■■■■■■■■■■■■■■■■ Product safety 2 Safety Product safety This product exhibited no flaws in terms of technical safety at the time it left the factory. To preserve this status and ensure non-hazardous opera- tion of the product, the following instructions must be observed carefully. Hazard levels The following warning messages indicate the severity of the danger and its possible effects.
■■■■■■■■■■■■■■■■■■■■■■ Safety CAUTION Health hazards or severe property damage Warns of dangerous situations or unsafe actions that could result in moderate injuries or considerable property damage. Lists measures to avoid hazard. Warning symbols Make sure that any additional hazard symbols are marked on the product for your operation of the product.
– Warning of dangerous optical radiation Intended use Metrohm products are used for the analysis and handling of chemicals. Usage therefore requires the user to have basic knowledge and experience in handling chemicals. Knowledge regarding the application of fire preven- tion measures prescribed for laboratories is also mandatory.
If the product is used for biological hazardous substances, it must be marked in accordance with regulations. In case of a return shipment to Metrohm or a Metrohm Service partner, the product or product component has to be decontaminated and the hazard symbol for biological hazardous substances must be removed.
■■■■■■■■■■■■■■■■■■■■■■ Responsibility of the operator 2.5.3 Danger from highly flammable substances WARNING Danger of fire and explosion from highly flammable substances and gases Burns from fire and/or injuries from explosions. Avoid ignition sources. ■ Use protective grounding. ■ Use exhaust equipment. ■...
■■■■■■■■■■■■■■■■■■■■■■ Functional description 3 Functional description Dosing unit – Overview Figure 1 Dosing unit – Overview Distributor Cylinder unit With four ports Available with various volumes Dosing drive Installed ■■■■■■■■...
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■■■■■■■■■■■■■■■■■■■■■■ Dosing unit – Overview Figure 2 Dosing drive - Overview Status display Contact pins LED. Multi-colored For communicating with the cylinder unit Twistlocks Piston rod For locking the cylinder unit For moving the piston ■■■■■■■■...
■■■■■■■■■■■■■■■■■■■■■■ Functional description 3.1.1 Cylinder unit – Overview Figure 3 Cylinder unit – Overview Distributor Cylinder top piece With four ports for solutions Housing Unlocking button Centering tube Cylinder Piston Data chip ■■■■■■■■...
■■■■■■■■■■■■■■■■■■■■■■ Dosing unit – Function Figure 4 Cylinder unit – Overview from above The four ports of the cylinder unit are intended for the following uses: Table 2 Use of the ports Port Connecting or sealing with Dosing Dosing tip Filling the cylinder Chemical bottle Not used...
■■■■■■■■■■■■■■■■■■■■■■ Functional description Rotating the cylinder: ■ The rotation of the cylinder controls which of the four ports the solu- tion flows through. The valve disk with an opening is located in the middle of the cylinder base. The distributor disk with four openings corresponding to the four ports of the distributor is located at the bottom in the cylinder attachment.
■■■■■■■■■■■■■■■■■■■■■■ Checking the delivery 4 Transport and storage Checking the delivery Immediately upon arrival of the merchandise, check the shipment against the delivery note to ensure completeness and absence of damage. Storing the packaging The product is supplied in extremely protective packaging together with the separately packed accessories.
5 Installation Installation by Metrohm NOTICE Installation of the products As a basic rule, the installation of the system and of the new products and modules is handled by trained and instructed specialists from the Metrohm Company and/or its representative. ■■■■■■■■...
Initial start-up by Metrohm NOTICE Initial start-up of the product As a basic rule, the initial start-up of the system and of the new prod- ucts and modules is handled by trained and instructed specialists from the Metrohm Company and/or its representative. ■■■■■■■■...
■■■■■■■■■■■■■■■■■■■■■■ Operation and control 7 Operation and control Operation NOTICE Operating via the control software The product can be operated using the commands of the control software. Additional information can be found in the software help . Dismantling the cylinder unit NOTICE Before you remove the cylinder unit, the cylinder must be emptied and the piston has to be moved into the exchange position.
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■■■■■■■■■■■■■■■■■■■■■■ Dismantling the cylinder unit The piston is in the exchange position. ■ Removing the tubing Unscrew the dosing tubing. ■ Unscrew the filling tubing. ■ Removing the stoppers Unscrew the two stoppers. ■■■■■■■■...
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■■■■■■■■■■■■■■■■■■■■■■ Operation and control Unlocking the cylinder unit Rotate the cylinder unit to the right as far as the UNLOCK position. Removing the cylinder unit Raise the cylinder unit straight upwards. See also Cylinder unit – Overview (chapter 3.1.1, page 11) ■■■■■■■■...
■■■■■■■■■■■■■■■■■■■■■■ Mounting the cylinder unit Mounting the cylinder unit NOTICE Default settings in the OMNIS Software Port 1 is defined as dosing port and Port 2 as fill port in the OMNIS Software default settings. The following instructions describe the default setting.
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■■■■■■■■■■■■■■■■■■■■■■ Operation and control Accessories Wrench (6.2739.000) ■ Attaching the cylinder unit Rotate the cylinder unit until the marking ■ with the label UNLOCK is in line with the marking on the dosing drive. Set the cylinder unit down onto the two ■...
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■■■■■■■■■■■■■■■■■■■■■■ Mounting the cylinder unit Mounting the stoppers Screw a stopper (6.1446.010) in each of the ■ two ports 3 and 4. Firmly tighten the stoppers with the wrench ■ (6.2739.000). Mounting the tubings Tighten an FEP tubing (6.1805.100) into ■...
■■■■■■■■■■■■■■■■■■■■■■ Operation and control Storing the cylinder unit We recommend emptying the cylinder unit if it is not used for several hours. You can find the function for emptying the cylinder in the OMNIS Soft- ware in the work area Equipment ▶ Manage instruments ▶ Select a dosing unit ▶...
■■■■■■■■■■■■■■■■■■■■■■ Cylinder unit – General maintenance 8 Maintenance Cylinder unit – General maintenance The cylinder units require appropriate care. Excess contamination of the cylinder units may result in functional disruptions and a reduction in the service life. You do not need to disassemble the cylinder unit at every reagent replace- ment.
Metrohm. Shorter maintenance intervals may be necessary if you frequently work with caustic and corro- sive chemicals. Metrohm Service offers every form of technical advice for maintenance and service of all Metrohm products. Cleaning the product...
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■ sockets) against moisture. If you suspect that moisture has gotten into the product, discon- ■ nect the product from the energy supply. Then notify Metrohm Service. Only personnel who have been issued Metrohm qualification may ■ perform service and repair work on electrical and electronic com- ponents.
■■■■■■■■■■■■■■■■■■■■■■ Maintenance Disassembling the cylinder unit Disassemble the cylinder unit as follows: Disassembling the cylinder unit Prerequisite The cylinder unit has been removed from the dosing drive. CAUTION Property damage caused by jammed cylinder unit Damage caused by disassembling of a jammed cylinder unit. The damaged cylinder unit must be replaced.
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■■■■■■■■■■■■■■■■■■■■■■ Disassembling the cylinder unit Remove the cylinder top piece. Set it aside. Remove the cylinder element. ■■■■■■■■...
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■■■■■■■■■■■■■■■■■■■■■■ Maintenance Hold the black cylinder base. Pull the cylinder together with the piston out of the centering tube. Position the piston tongs at the piston stopper of the piston. ■■■■■■■■...
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■■■■■■■■■■■■■■■■■■■■■■ Disassembling the cylinder unit Let the sleeve of the piston tongs sink to the piston surface. Pull the piston out of the cylin- der with the plunger (yellow) of the piston tongs. NOTICE Do not disconnect the cylinder from the cylinder base.
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■■■■■■■■■■■■■■■■■■■■■■ Maintenance If the error persists, call Metrohm Service or replace the entire cylinder unit. Fixing the jamming of the attached cylinder unit 1 Remove the tubings and the stoppers. 2 In the OMNIS Software under Manual control, execute the Func- tion Exchange position.
If you suspect that chemical substances have gotten into the ■ instrument, disconnect the instrument from the energy supply. Then, notify Metrohm Service. Cleaning the housing and the centering tube Prerequisites: The cylinder unit is disassembled .
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■■■■■■■■■■■■■■■■■■■■■■ Maintenance 2 Cleaning the piston Use a cloth to gently degrease the piston. ■ Clean the piston with liquid cleaning agent. ■ Rinse the piston thoroughly with deionized water. ■ 3 Cleaning the cylinder Clean the cylinder with liquid cleaning agent. ■...
■■■■■■■■■■■■■■■■■■■■■■ Cylinder unit – Cleaning the electrical contacts Clean the contact surface of the distribu- tor disk with ethanol. Cylinder unit – Cleaning the electrical contacts Cleaning contaminated contacts The cylinder unit has to be removed from the dosing drive to clean the contacts Dismantling the cylinder unit (see chapter 7.2, page 17).
■■■■■■■■■■■■■■■■■■■■■■ Maintenance Cleaning the electrical contacts of the dosing drive Clean the electrical contacts on the dosing drive. Proceed in accordance with the proce- dure for the electrical contacts on the cylinder unit. Assembling the cylinder unit Checking the cylinder and piston 1 Check the cylinder and the piston for the following defects: Are rough areas or scratches visible on the cylinder? ■...
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■■■■■■■■■■■■■■■■■■■■■■ Assembling the cylinder unit Greasing the piston NOTICE Grease only the edge of the piston. The tip of the piston must not be greased. Using your finger, carefully apply a trace of par- 6.2803.010 affin grease (6.02803.010) to the exterior of the sealing lips of the piston.
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■■■■■■■■■■■■■■■■■■■■■■ Maintenance Assembling the cylinder element Attach the centering tube on the cylinder base. Observe the following while doing so: The piston stopper must fit through the ■ small opening. The protrusions of the centering tube must ■ fit into the recesses of the cylinder base. Set the green housing onto the centering tube.
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■■■■■■■■■■■■■■■■■■■■■■ Assembling the cylinder unit Mounting the housing Remove the green housing again. Place the cylinder top piece on the coun- tertop with the ports facing downwards. Place the cylinder element on the cylinder top piece. Rotate cylinder element in such a way that the markings on the centering tube and on the cyl- inder top piece are positioned above one another.
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■■■■■■■■■■■■■■■■■■■■■■ Maintenance Attach the green housing, observe the follow- ing while doing so: The markings on the housing, on the cen- ■ tering tube and on the cylinder top piece must be positioned above one another. The housing must rest flush on the cylinder ■...
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■■■■■■■■■■■■■■■■■■■■■■ Assembling the cylinder unit Turn the cylinder unit over and press it firmly against the countertop. The piston is pressed into the correct position. ■■■■■■■■...
■■■■■■■■■■■■■■■■■■■■■■ Malfunctions and troubleshooting 9 Malfunctions and troubleshooting Troubleshooting Problem Cause Remedy The cylinder top The cylinder unit is jammed Fix the jamming. piece cannot be because the valve disk and removed the distributor disk stick together. ■■■■■■■■...
■■■■■■■■■■■■■■■■■■■■■■ 10 Disposal This product is covered by European Directive, WEEE – Waste Electrical and Electronic Equipment. The correct disposal of your old product will help to prevent negative effects on the environment and public health. More details about the disposal of your old product can be obtained from your local authorities, from waste disposal companies or from your local dealer.
■■■■■■■■■■■■■■■■■■■■■■ Technical specifications 11 Technical specifications 11.1 Ambient conditions Nominal function range +5 °C - +45 °C at a maximum of 85% humidity Storage and transport –20 °C - +70 °C 11.2 Cylinder Unit – Energy supply Nominal voltage 3.3 VDC 11.3 Cylinder Unit –...
The OMNIS dosing unit fulfills the half systematic error and the whole random error according to ISO/EN/DIN standard 8655-3 "Piston-operated volumetric apparatus – Part 3: Piston burettes". Metrohm guarantees that OMNIS dosing units are in compliance with the following limit values at the time of shipment: Cylinder...
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± 100 µL ± 0.05% ± 25 µL The Metrohm representatives offer the possibility of on-site inspections and certifications of the OMNIS dosing units with respect to accuracy. We recommend an accuracy inspection whenever a cylinder and/or a piston of a dosing unit have been replaced.
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