Grundfos DMX 226 Installation And Operating Instructions Manual
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Grundfos DMX 226 Installation And Operating Instructions Manual

Grundfos DMX 226 Installation And Operating Instructions Manual

Dosing pump
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DMX 226
Dosing pump
Installation and operating instructions
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GRUNDFOS INSTRUCTIONS

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  • Page 1 GRUNDFOS INSTRUCTIONS DMX 226 Dosing pump Installation and operating instructions Further languages http://net.grundfos.com/qr/i/91834766...

  • Page 2: Table Of Contents

    1.1 Introduction Safety of the system in the event of a failure in the These installation and operating instructions contain all the dosing system information required for starting up and handling the DMX 226 Technical data dosing pump. Identification If you require further information or if any problems arise, which...

  • Page 3: Safety

    If the safety instructions are not observed, all rights to claims for dosing system damages may be lost. DMX 226 dosing pumps are designed according to the latest Non-observance of the safety instructions may lead to the technologies and are carefully manufactured and tested.

  • Page 4: Technical Data

    3. Technical data 3.1 Identification DMX 4-10 B-PP/E/T-X-4144X 96293585 Type: DMX 221 S/N:00529211 4.00 L/h, 10.00 bar, 50 Hz 230/400V 50/60Hz 440/480V 60 Hz 96293585P11053100529211 Made in Germany Fig. 1 DMX nameplate Pos. Description Type designation Model Maximum capacity [l/h] Voltage [V] Frequency [Hz] Product number...

  • Page 5: Type Key

    3.2 Type key Example: DMX 765 - 3 B PP /E /T -X -E 1 QQ X E0 Type range Motor variant PTC motor for frequency control Motor type II 2G EEx e II T3, Maximum flow [l/h] 3 x 400 V, 50 Hz (only DMX-B) Motor type II 2GD EEx de IIC T4, Maximum counterpressure [bar] 3 x 400 V, 50 Hz (only DMX-B)

  • Page 6: Pump Types

    3.3 Pump types Pump type Motor Stroke volume Dosing head size [kW] [ml] Single pump Double pump DMX 24-8 DMX 24-8/24-8 DMX 52-8 DMX 52-8/25-8 13.8 DMX 100-8 DMX 100-8/100-8 DMX 142-8 DMX 142-8/142-8 DMX 37-5 DMX 37-5/37-5 DMX 82-5 DMX 82-5/82-5 0.18 DMX 160-5...
  • Page 7 3.4 Pump performance 3.4.2 Performance Applies to: 3.4.1 Accuracy • maximum counterpressure • Dosing flow fluctuation: ± 1.5 % within the control range 1:10. • water as dosing medium • Linearity deviation: ± 4 % of the full-scale value. • flooded suction 0.5 mWC Adjustment from max.
  • Page 8 50 Hz 60 Hz 100 Hz Pump type p max.* p max.* Max. Max. Max. p max* stroke rate stroke rate stroke rate 3 AC 1 AC 3 AC 1 AC Double pump [l/h] [n/min] [bar] [bar] [l/h] [n/min] [bar] [bar] [l/h] [n/min]...

  • Page 9: Suction Heights

    3.5 Suction heights 3.5.1 Media with a viscosity similar to water Applies to: • counterpressure of 1.5 to 3 bar • non-degassing and non-abrasive media • temperature of 20 °C • stroke length 100 % • standard pump version. Pump type 50 Hz 60 Hz 100 Hz...
  • Page 10 3.5.2 Suction heights for media with maximum permissible viscosity Applies to: • Newtonian liquids • non-degassing and non-abrasive media • temperature of 20 °C • standard pump version. Pump type Max. stroke rate Maximum viscosity Intake height Single pump Double pump [n/min] [m Pas] [mWC]...

  • Page 11: Ambient And Operating Conditions

    (non-condensing): 70 % at +40 °C, 90 % at +35 °C. • memory function (stores a maximum of 65,000 pulses) • two-stage tank-empty signal (e.g. via Grundfos tank empty The installation site must be under cover! sensor) Ensure that the enclosure class of motor and pump •...

  • Page 12: Weights

    3.11 Weights Approx. weight Approx. weight Single pump Stainless steel Double pump Stainless steel [kg] [kg] [kg] [kg] DMX 24-8 DMX 24-8/24-8 DMX 52-8 DMX 52-8/25-8 DMX 100-8 DMX 100-8/100-8 DMX 142-8 DMX 142-8/142-8 DMX 37-5 DMX 37-5/37-5 DMX 82-5 DMX 82-5/82-5 DMX 160-5 DMX 160-5/160-5...

  • Page 13: Dimensional Sketches

    3.12 Dimensional sketches Fig. 2 Dimensional sketches of DMX 226 (part 1) Pump type DMX 24-8 97.5 85.5 104.5 G 1 1/4 DMX 52-8 97.5 85.5 104.5 G 1 1/4 DMX 100-8 97.5 85.5 104.5 G 1 1/4 DMX 142-8 97.5...
  • Page 14 Fig. 3 Dimensional sketches of DMX 226 (part 2) Pump type DMX 67-10 G 1 1/4 DMX 132-10 G 1 1/4 DMX 190-10 G 1 1/4 DMX 190-8 G 1 1/4 DMX 95-8 G 1 1/4 DMX 199-8 G 1 1/4...

  • Page 15: Transport And Storage

    If Grundfos is requested to service the pump, it must be ensured that the pump is free from substances that can be injurious to health or toxic. If the pump has been used for such substances, the pump must be cleaned before it is returned.

  • Page 16: Installation

    5. Installation 5.1 Optimum installation Max. 1 m max. 1m Fig. 4 Example of optimum installation • For non-degassing media with a viscosity similar to water, the Pos. Components pump can be mounted on the tank (observe the maximum suction height). Dosing tank •...

  • Page 17: Mounting

    • Note for discharge-side installation: To protect the piping, use • To avoid the siphon effect, install a pressure-loading valve (7i) a pulsation damper (8i) for rigid piping longer than 3 metres in the discharge line and, if necessary, a solenoid valve (14i) in and tubing longer than 5 metres.

  • Page 18: Connecting The Suction And Discharge Lines

    Depending on the pipe material and connection, glue it (PVC), Warning weld it (PP, PVDF or stainless steel) or press it in (stainless The pump housing must only be opened by steel). personnel authorised by Grundfos! • Fit the gasket. • Screw onto the valve using the union nut.

  • Page 19: Commissioning

    7. Commissioning 7.1 Checks before start-up • Check that the rated voltage stated on the pump nameplate corresponds to the local conditions! • Check that all connections are secure and tighten, if necessary. • Check that the dosing head screws are tightened with the specified torque and tighten, if necessary.

  • Page 20: Operation

    For maximum safety, we recommend the pump version with diaphragm leakage detection. 8.1 Description of the pump Fig. 18 DMX 226 8.3 Adjusting the dosing flow via the stroke length Pos. Components Adjust the stroke length only while the pump is...

  • Page 21: Stroke-Length Adjustment

    3 bar. See section 13. Dosing curves Settings of frequency converter when used with Grundfos If the operating counterpressure at the injection unit deviates dosing pumps considerably from this value, it is advisable to readjust the zero point to obtain more precise values.

  • Page 22: Electronic Diaphragm Leakage Sensor

    9.2 Electronic diaphragm leakage sensor To ensure electromagnetic compatibility (EMC), the input cables and current output cables must be screened. 9.2.1 Technical data 1. Connect the screen at one end to PE. Model 230 V (+ 10 %/- 10 %) –...
  • Page 23 Repairs must only be carried out by authorised and • No maintenance is possible by the user. qualified personnel! • If the electronics does not operate correctly, call Grundfos 9.2.8 Using the contacts service. • Terminals 6 and 7 (potential-loaded) –...

  • Page 24: Integral Relief Valve

    10. Integral relief valve 10.4.2 Setting the valve opening pressure To change the factory-set opening pressure, proceed as follows: 10.1 Function The pump must be running. If the pump is the only pump in the system, the integral relief 1. Remove the cap from the top part of the relief valve. valve (optional) protects the complete discharge side of the 2.

  • Page 25: Maintenance

    The gear grease must only be changed by authorised and qualified personnel. Clean the relief valve, and replace the diaphragm, if necessary. For this purpose, send the pump to Grundfos or an • At least every 12 months or after 8,000 operating hours.

  • Page 26: Replacing The Diaphragm

    11.5 Replacing the diaphragm Adjust the stroke length only while the pump is Caution running! During transport, the deaeration opening must be Caution closed with the screw plug! If possible, rinse the dosing head, e.g. by supplying it Note with water. 11.5.1 Switching off the pump 1.

  • Page 27: Fault Finding Chart

    Leaking suction line. Replace or seal the suction line. suck in. b) Cross-section of the suction line too small or Check with Grundfos specification. suction line too long. c) Clogged suction line. Rinse or replace the suction line. d) Foot valve covered by sediment.

  • Page 28: Dosing Curves

    13. Dosing curves The dosing curves on the following pages are trend curves. Q [l/h] They apply to: • performance of single pump (the flow rate is doubled for the double pump), • water as dosing medium, 3 bar • zero point of pump Q for specified pressure, see table below, 8bar...
  • Page 29 Q [l/h] Q [l/h] 4 bar 3 bar 1.5 bar 1.5 bar 1,5bar 1,5bar 3bar 4bar 90 100 90 100 h [%] h [%] Fig. 43 DMX 60-3 (50 Hz) Fig. 38 DMX 82-5 (50 Hz) Q [ l/h ] Q [l/h] 4 bar 3 bar...
  • Page 30 Q [l/h] Q [l/h] 3 bar 3 bar 1,5bar 10 bar 1.5 bar 10bar 3bar 3bar 90 100 90 100 h [%] h [%] Fig. 48 DMX 255-3 (60 Hz) Fig. 53 DMX 132-10 (60 Hz) Q [l/h] Q [l/h] 3 bar 3 bar 10 bar...
  • Page 31 Q [l/h] Q [l/h] 3 bar 3 bar 6 bar 6 bar 3bar 3bar 1,5bar 6bar 1.5 bar 8 bar 6bar 8bar 90 100 90 100 h [%] h [%] Fig. 63 DMX 152-6 (60 Hz) Fig. 58 DMX 199-8 (50 Hz) Q [l/h] Q [l/h] 3 bar...

  • Page 32: Disposal

    This product or parts of it must be disposed of in an Q [l/h] environmentally sound way. Use appropriate waste collection services. If this is not possible, contact the nearest Grundfos company or service workshop. 3 bar Subject to alterations.
  • Page 33 Appendix Safety declaration Please copy, fill in and sign this sheet and attach it to the pump returned for service. Fill in this document using English or German Note language. We hereby declare that this product is free from hazardous chemicals, biological and radioactive substances: Product type: ________________________________ Model number: _____________________________...
  • Page 35 Siu Wai Industrial Centre Turkey Poland GRUNDFOS Canada Inc. 29-33 Wing Hong Street & GRUNDFOS POMPA San. ve Tic. Ltd. Sti. 2941 Brighton Road GRUNDFOS Pompy Sp. z o.o. 68 King Lam Street, Cheung Sha Wan Gebze Organize Sanayi Bölgesi Oakville, Ontario ul.
  • Page 36 91834766 0317 ECM: 1203453 www.grundfos.com...

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