3.4.2 DUOMIX 333 on stacker frame with heaters and hose heating .....24 3.4.3 DUOMIX 333 on mobile frame with heated material tanks ....25 3.4.4 DUOMIX 333 on mobile frame with feed tanks ........26 Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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5.3.5 Connect flushing pump ...............52 5.3.6 Connect feed pumps ................52 5.3.7 Connect the owner's optional expansions and attachment devices ...53 5.3.8 Establish the mains connection ............53 5.3.9 Connect compressed air supply ............54 Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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7.4.2 Check release agent for material residues and top up .......74 7.5 Feed pumps ....................74 7.5.1 Check the release agent level ............74 7.6 High pressure filter ...................75 7.6.1 Clean filter insert ................75 7.6.2 Filter inserts for high pressure filters ..........76 Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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7.9.2 Fit material pump(s) ................80 7.10 Recommended operating fluids ..............81 7.11 Special tool ....................82 8 Eliminating operational faults..............83 9 Technical data .....................87 9.1 Machine card ....................87 9.2 Type plates ....................87 Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
We recommend that the machine owner have this confirmed in writing. 2.1 Explanation of symbols Safety information warns of potential accident risks and describes the meas- ures required for accident prevention. In the operating instructions from WIWA, safety information is highlighted and labelled as follows: DANGER...
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Signals references to directives, work instructions and operating instructions that contain very important information and must be observed. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
An unintended ejection of material from the spray gun can cause personal injury and property damage. Lock the spray gun with all interruptions to work! ➤ Prior to each start-up, always check the spray gun lock! ➤ Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Always ensure contact between the spray gun and the container wall. ➤ Only use electrically conductive material hoses. ➤ All original material hoses from WIWA are conductive and designed for our machines. WARNING If the machine becomes contaminated with material during operation, an electrostatic charge may be generated with the increasing coating thick- ness.
Switch all Material fluid heaters off when carrying out the following work: ➤ Cleaning, pressure testing, decommissioning, maintenance and repair. Only perform cleaning work when the machine has cooled down. ➤ Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Wyposażenie / części zamienne: przestrzegać maks. ciśnienia roboczego maszyny! Tillbehör/reservdelar: ge akt på maskinens max. arbetstryck! Acessórios / peças de substituição: ter em atenção a pressão de serviço máx. da máquina! the operating manual! Fig. 1: Safety card Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Function of the overpressure valve (optional) OK? Function of the on/off switch for the spray guns (optional) OK? When checking further safety equipment observe the operating instructions for the optional accessories. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Safety 2.4.1 Safety valves Safety valves are fitted to the DUOMIX 300/333: In the air outlet of the maintenance unit for ➤ the proportioning pump (see Fig. 2), In the air motors of the flushing pump and ➤ the optionally available feed pumps.
Stop/emergency stop button Using the red button on the control cabinet for the pressure and metering moni- toring, it is possible to switch the DUOMIX 300 / 333 off immediately in an emergency (see Fig. 5 and Fig. 6). As soon as the button is pressed, the compressed air supply is interrupted.
The switch must be set to the "OFF" position with every interruption to work, even very brief interruptions. This safely interrupts the spray process. Fig. 10: Switch for spray gun Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Always wear the protective clothing stipulated for your working environment (e.g. antistatic protective clothing in potentially explosive areas) and also observe the recommendations in the safety datasheet of the material manu- facturer. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
When repairing and maintaining the machine, only use original spare parts ➤ from WIWA. If spare parts are used, that have not been produced or supplied by WIWA ➤ then the guarantee is voided and all liability shall be excluded.
In case of injuries caused by processing material or solvents, always have the manufacturer's datasheet ready to show the doctor (supplier or manufactur- er address, their telephone number, material designation and material number). Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
3.1 Intended use Using the DUOMIX 300 / 333 it is possible to apply 2K coatings with mixing ratios of 1 : 1 to 8 : 1 to a surface. It is possible to process low to high viscosity 2K materials that are solvent-free or contain solvents, also with extremely short pot lives (e.g.
Machine description 3.3 Modular machine configuration A DUOMIX 300 / 333 always consists of the following basic modules: Proportioning pump as main module, ➤ Regulation and control elements, ➤ Material feed system, ➤ Mixing unit, ➤ Flushing pump. ➤ Controlling/regulating...
Maintenance unit without compressed air regulator Intermediate piece Water heating for hose assembly (optional accessory) Material fluid heater (optional accessory) Control cabinet with contact manometers Compressed air regulation unit Flushing pump Frame Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Relief ball valves Page 67 Flow rate transducer for the A component (optional) Flow rate transducer for the B component (optional) Intermediate piece for connecting the hose assembly Page 36 Frame Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Maintenance unit with compressed air regulator Flushing pump Feed pump for the B component Agitator for the B component Material tank for the B component Tubular heating element for the B component tank heating Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Control cabinet with pressure and metering monitoring for one component Compressed air regulation unit Feed tank for the A component Double high pressure filter Flushing pump Intermediate piece with ratio check unit Mobile frame Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
(spray operation) or back into the material tank (circulation operation) depending on the operating mode selected. Optional expansions can be interconnected in the material flow. Fig. 16: Proportioning pump Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
31. The water separator separates the moisture and particles of dirt contained in the air. The oil mister supplies the compressed air oil to the moving parts for lubrication. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Cycle counter (optional) This is where the strokes implemented during operation are displayed. This allows the operator to draw conclusions regarding the quantity of pumped material. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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)* The switches and buttons may optionally be located on the control cabinet or the associated mixing unit. The operating modes are set on manually actuated mixing units with the help of ball valves at the mixing unit. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Mounting on the frame of the DUOMIX 333 or as an external module, which ➤ is connected with the DUOMIX 333 via an intermediate piece and a hose assembly. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Open and close the flushing levers multiple times in alternation during flush- ing, in order to ensure that each component is flushed through separately. Finally, flush with both levers in the flushing position Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Open and close the flushing levers multiple times in alternation during flush- ing, in order to ensure that each component is flushed through separately. Finally, flush with both levers in the flushing position Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
(A, B and A+B) as follows: Operating On/off or selector switch Illuminated pushbutton mode Draining Spraying / flush- Flush base Flush hard Spraying Spray Flush A Flush Flush B Flush Flush A+B Flush Circulation Flush Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Using these switches it is possible to set the operating modes "circulation", "spraying" and "flushing" as follows: Operating mode Selector switch On/off switch spraying/flushing draining Spraying Spray Flushing Flush Circulation Flush Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
➤ temperature display for A and / or B component ➤ Connections for the hose heating ➤ Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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"Flushing" open / ON - Fig. 33: Pneumatic connections "Spraying" closed / OFF on the intermediate piece comp. A black / "Flushing" open / ON - "Spraying" closed / OFF comp. B Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
If the mixing unit is equipped with 2 ball valves/buttons for the separate flushing of component A + B, the flushing media line branches off before the mixing unit. The flushing pump can be mounted directly on the frame of the DUOMIX 300/333 or externally, e.g. on a wall bracket.
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When operating lifts, rams and the optional accessories (agitator, level sensor, etc.) observe and comply with the corresponding separate operating instructions. Fig. 38: Feed pump on two-column lift Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Optional expansions and accessories 4 Optional expansions and accessories WIWA offers a comprehensive range of accessories for the optimum prepara- tion and processing of spray materials. The accessories required are config- ured on a customer-specific basis for each machine. The following list contains just some of the most common accessories and expansions.
Nozzle for draining the heating water Nozzle for filling the heating water Screw-in heating element Temperature controller on the screw-in heating element Observe and adhere to the separate operating instructions for the screw-in heating element. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Manometer for the air intake pressure to the membrane pump Always observe and adhere to all information in the separate operating in- structions for the Material fluid heater and the membrane pump. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Pneumatic agitators are supplied with compressed air via the maintenance unit of the DUOMIX 300/333, or if a lifting device is used then via its control unit. Fig. 45: Pneumatic agitator...
(see Fig. 49). Fig. 48: Ratio check unit on the mixing unit Fig. 49: Ratio check unit on the inter- mediate piece Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Flow rate measuring device In order to determine the actual amount of material issued and simultaneously monitor the mixing ratio, the DUOMIX 300/333 can be equipped with an electrically operated flow rate measuring device in conjunction with ma- terial flowmeters.
4.5.4 Distributor for spray guns Using a distributor for spray guns it is possi- ble to connect multiple pistols to the machine simultaneously. Fig. 53: Example with a 2-fold distributor Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Never stand beneath suspended loads or ➤ in the loading area. There is a risk of death here! Secure the load on the transport vehicle ➤ to prevent sliding and falling. Fig. 56: Stacker mount Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Although no legal regulations apply to the low-mist airless spray process, ➤ dangerous solvent vapours and paint particles must be extracted. Protect all items neighbouring the spray object against possible damage ➤ due to material mist. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Before commencing assembly work ensure – with the machine and optional accessories – that: the compressed air shut-off valve is closed. the compressed air regulator is turned down fully. all material shut-off valves are closed. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Installing the hose assembly If the machine is equipped with an external mixing unit, a hose assembly is used in order to connect the intermediate piece on the DUOMIX 300/333 with the external mixing unit. The hose assembly contains a supply and return hose for each component, as well as a flushing hose.
Spray gun Static mixer Spray hose Fig. 62: Connect the spray hose and spray gun Observe and adhere to the separate operating instructions for the spray gun. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Run the return hoses from the outlet distributor into the material tanks and secure these against slipping out unintentionally. Connect the compressed air line to the compressed air connection on the feed pump. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Observe and adhere to the separate operating instructions. In the case of versions with mains plug: Plug the mains plug into a suitable power supply. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Fig. 63: Compressed air connection for the machine (generally behind at the maintenance unit the maintenance unit). Run the on-site compressed air line to the compressed air connection on the maintenance unit. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Check the release agent level in the proportioning pump and top up if necessary (see chap. 7.4.2 on page 74). Check the release agent level in the feed pumps (if available) and top up if necessary. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
You can find the process for thorough cleaning in Chap. 6.3.3 Clean the machine thor- oughly on page 66. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
➤ the feed pumps (if available). ➤ Run the return hoses for components A and B into separate collection con- tainers and secure these against slipping out unintentionally. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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Turn down the compressed air regulator for the metering and feed pumps fully. Set the machine to "Off" or "flush". Actuate the stop/emergency stop button on the control cabinet. Close the compressed air shut-off valve on the maintenance unit. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Repeat working steps 3-6 of this chapter at the other spray guns. ➤ If the machine is to be used for internal pipe coating, observe and adhere to the information in the separate operating instructions for the internal pipe coater. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Deviations between the target and actual mixing ratio arise if the toothed wheel flowmeters for the flow measurement exhibit wear. Further- more, the K-factors (=number of measuring pulses of the volumetric counter per litre) are determined with calibration. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Observe the information in Chap. 6.2.1 Set spray pres- sure on page 62. Unlock the spray gun and disengage it until the process material runs out cleaning and evenly. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
If the spray pressure is too low then this leads to streaking and varying ➤ coating thicknesses. Observe the operating instructions for your spray gun. They contain further tips for the optimisation of the spray pattern. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Release the trigger before stopping the movement. ➤ Change the spray nozzle before this becomes worn. ➤ Worn nozzles lead to excessively high material consumption and adversely affect the quality of the coating. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
WIWA lift). Scrape off the remaining paint. Place the feed pump in a container with cleaning fluid. Observe and adhere to the separate operating instructions for the lift. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
The feed pumps should only run slowly to support the circulation. Circulation keeps the material at operating temperature and the material cannot settle. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
– Increase the air intake pressure at the compressed air regulator for the proportioning pump. – Continue to flush via the ratio check unit until clean cleaning fluid runs out. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
It is necessary to check compatibility of the materials used with other mate- rials in each individual case. WIWA shall be happy to assist you in determin- ing the suitability of your machine for other materials and in the selection of suitable packing.
In the case of versions with a flow rate measuring device: Switch off the flow rate measuring device at the main switch. ➤ Disconnect the device from the power supply. ➤ Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Thoroughly clean the machine of material residues. ➤ Disassemble the machine and separate the materials - metals must be tak- ➤ en to a scrap metal depot, plastic parts can be disposed of with household waste. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Maintenance and repair work on electrical parts must be carried out by ➤ specialist personnel with an electrical qualification - all other mainte- nance and repair work must be carried out by WIWA customer service or specially trained personnel. WARNING During maintenance work ignition sources may arise (e.g.
Check release agent for material residues Chap. 7.4.2 on page 74 every 3 years Have the compressed air and material hoses checked by a specialist and replace if nec- essary Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
2 cm below the top edge of the oil tank. If necessary, top up the lubricant. We recommend using pneumatic oil (order number 0632579) or antifreeze (order number 0631387) from WIWA. Firmly screw the oil tank back onto the oil mister.
With a maximum fill level, the release agent lies at the bot- tom edge of the filler opening. The adjusting vessels must be topped up at least halfway. Fig. 71: Release agent level of the feed pumps Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Check the O-ring - if damaged, replace it. Fit the high pressure filter in accordance with working steps 1-3 in reverse order. Repeat this process with the other high pressure filter. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Only close the ball valve when the machine is put out of op- eration for an extended period, in order to prevent moisture from penetrating via the filter. Fig. 73: Ventilation system with silica gel filter Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Make sure the O-ring is seated correctly! Ensure no granulate has be- ➤ come stuck in the threaded connection! When screwing in the double nipple use thread locker or Teflon tape. ➤ Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Open the optionally available ball valves up- stream of the material pumps and downstream Fig. 75: Dirt trap of the feed pumps. Open the compressed air shut-off valve on the maintenance unit. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Maintenance 7.9 Replacing the material pumps Your DUOMIX 300 / 333 has a fixed mixing ratio (see type plate). However, in order to adjust the mixing ratio it is necessary to replace one or more material pumps. No. Designation Main compressed air shut-off valve...
Close the material hoses at the material intake and outlet for the material pump. Fill the 3 release agent chambers of the DUOMIX 300 / 333 with release agent, see Chap. 7.4.2 Check release agent for material residues and top up on page 74.
² for the maintenance unit ³ Substances required during maintenance and repair work (see information in the spare parts lists) The release agent and pneumatic oil are also available in larger containers on request. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Jacket ring for needle change on au- tomatic spray guns Various Allen keys Hook wrench for assembly/disas- sembly of the material pump Ring spanner Various open-ended wrenches Fig. 80: Tool kit Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
The feed plates. hose inflates or the overpressure valve at the outlet distributor opens and the material is fed back into the container via the return hose. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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4. The air pressure set at the main- Turn down the maintenance unit tenance unit is as high as somewhat. the network pressure. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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Send the air motor to the WIWA The air motor no longer operates, 1. The air motor controller is de- although the compressed air supply fective.
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With a deviation from the mixing ratio 1. poss. pressure too weak with Check material feed check the material feed => poss. one one component or feed blocked component pressure too weak or feed blocked Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
Please ensure that the data on these two type plates matches with the infor- mation on the machine card. In case of irregularities or a missing type plate, please inform us immediately. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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A and B component ➤ the flushing pump ➤ the control cabinet, etc. ➤ These type plates contain the technical data and serial numbers for the corre- sponding machine components. Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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Technical data Original operating instructions DUOMIX 300 / 333 DM333_BAoDB_en_1608 • rs...
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Headquarters and production WIWA Wilhelm Wagner GmbH & Co. KG Gewerbestr. 1 - 3 35633 Lahnau, Germany Phone: +49 (0)6441 609-0 Fax: +49 (0)6441 609-2450 info@wiwa.de www.wiwa.de WIWA Partnership USA WIWA LP 107 N. Main St. P.O. Box 398, Alger, OH 45812...
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