Grundfos DMI 208 Installation And Operating Instructions Manual
  1. Manuals
  2. Brands
  3. Grundfos Manuals
  4. Water Pump
  5. DMI 208
  6. Installation and operating instructions manual
Grundfos DMI 208 Installation And Operating Instructions Manual

Grundfos DMI 208 Installation And Operating Instructions Manual

Dosing pump
Hide thumbs
Table of Contents

Advertisement

Quick Links

GRUNDFOS ALLDOS INSTRUCTIONS
DMI 208
Dosing pump
Installation and operating instructions

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the DMI 208 and is the answer not in the manual?

Questions and answers

Related Manuals for Grundfos DMI 208

Summary of Contents for Grundfos DMI 208

  • Page 1 GRUNDFOS ALLDOS INSTRUCTIONS DMI 208 Dosing pump Installation and operating instructions...

  • Page 2: Declaration Of Conformity

    Declaration of Conformity We Grundfos Alldos declare under our sole responsibility that the products DMI 208, to which this declaration relates, are in conformity with the Council Directives on the approximation of the laws of the EC Member States relating to –...

  • Page 3: Table Of Contents

    1.3 Information about the product Control data (with control unit) Installation 1.3.1 Pump types Installation location The DMI 208 dosing pump is available for a variety Mounting of performance ranges in various sizes: General information on installation Dosing controller Tube / pipe lines...
  • Page 4 The following is indicated on the pump nameplate: • The pump type which specifies the stroke volume, connection size and performance data (see below). • The pump serial number which is used to identify the pump. • The most important characteristics of the pump configuration, e.g.
  • Page 5 1.3.3 Pump performance Performance data at maximum pump counter pressure Applies to: • water as dosing medium • suction lift of 0.5 m • fully deaerated dosing head • maximum stroke length. 50 Hz 60 Hz Stroke Max. Max. Pump type volume stroke stroke...
  • Page 6 * Dosing head and valves moistened. 1.3.6 Sound pressure level 45 dB(A), testing according to DIN 45635-01-KL3. 1.3.7 Enclosure class • DMI 208 Inside: IP 20. • Pump with mains plug: IP 65. • Pump without mains plug: IP 65 can only be ensured if the power supply cable is connected with IP 65 protection.
  • Page 7 For degassing dosing media, note the following: • Maximum input power: 22 W (reduced input • The DMI 208 with automatic deaeration can be power according to pump type and connected used for degassing, non-crystallising media such sensors). as H .

  • Page 8: Applications

    1.4.1 Appropriate, acceptable and correct usage must be maintained in a readable condition at all The DMI 208 pump is suitable for liquid, non- times. abrasive and non-inflammable media strictly in accordance with the instructions in this manual.

  • Page 9: Qualification And Training Of Personnel

    Leakages of dangerous substances (e.g. hot, toxic) DMI 208 dosing pumps are designed according to must be disposed of in a way that is not harmful to the latest technologies and are carefully the personnel or the environment.

  • Page 10: Transport And Intermediate Storage

    4.1 Identification Do not throw or drop the pump. Caution 3.2 Delivery The DMI 208 dosing pump is delivered in a cardboard box. Place the pump in the packaging during transport and intermediate storage. 3.3 Unpacking Retain the packaging for future storage or return, or dispose of the packaging in accordance with local regulations.

  • Page 11: Type Key

    4.2 Type key Example: DMI 1.6 - 10 A PVC /V /G -T -H 1 33 B Type range Mains plug No plug EU (Schuko) Maximum flow [l/h] USA, Canada Maximum counter pressure [bar] Control variant Australia, New Zealand, Taiwan Without external control interface Switzerland...

  • Page 12: General Description

    The functions are described, but only apply to the relevant pump version. 4.3.1 DMI 208 with manual deaeration (DMI 0.3-10 - DMI 18-3.5) and with valve for automatic deaeration for non-crystallising, degassing media (H ) (only for DMI 1.0-10 - DMI 18-3.5)
  • Page 13 4.3.2 DMI 208 Plus system with priming and calibration system for moderately degassing liquids (chlorine bleaching agents) (only for DMI 0.3-10 to DMI 4.0-8 / DMI 6.0-8) DMI 208 Plus system Fig. 3 4.3.3 Functional principle of the Plus system Pos.

  • Page 14: Dmi

    4.3.4 DMI 208 with diaphragm leakage detection DMI 208 with diaphragm leakage detection Fig. 5 4.3.6 Dosing controller (without Plus system) Pos. Components The dosing controller monitors the dosing process and emits a pulse for each suction stroke. Suction valve...

  • Page 15: Dimensional Sketches

    4.4 Dimensional sketches DMI 208 Fig. 8 Dimensions for DMI 208 c HV d HV e HV [mm] [mm] [mm] [mm] [mm] [mm] DMI 0.3-10 20.7 175.5 G 3/8 175.5 G 3/8 DMI 0.8-16 - DMI 6.0-8 20.7 175.5 G 3/8 207.5...
  • Page 16 3/8" DMI 1.0-10 - DMI 18-3.5 with valve for automatic deaeration Fig. 9 ΔA Fig. 10 DMI 208 with diaphragm leakage detection Dimensions for DMI 208 with automatic deaeration / diaphragm leakage detection [mm] [mm] [mm] [mm] [mm] DMI 0.3-10 —...

  • Page 17: Versions

    Fig. 11 DMI 0.3-10 - DMI 4.0-8 / DMI 6.0-8 with Plus system Dimensions for DMI 0.3-10 - DMI 4.0-8 / DMI 6.0-8 with Plus system [mm] [mm] [mm] [mm] DMI 0.3-10 25.2 197.5 G 3/8 DMI 6.0-8 4.5 Versions 4.5.1 Standard version of control unit Function of control unit Relay function...

  • Page 18: Control Data (With Control Unit)

    (stores a maximum of 65,000 pulses) (optional) Pumps with control unit are only suitable for indoor use! Do not install • two-stage tank-empty signal (e.g. via Grundfos outdoors! Alldos tank-empty sensor) • stroke signal/pre-empty signal (optional) 5.1.3 Mounting surface •...

  • Page 19: General Information On Installation

    Fig. 13 Vertical mounting exceeded. Consequential faults or damage must be evaluated by the 5.2.3 Mounting of DMI 208 Inside operator and appropriate precautions must be taken to avoid them! Fig. 14 Drilling scheme 1.
  • Page 20 5.3.1 Installation examples Fig. 15 Installation example of pump with manual deaeration For pumps with Plus system: Pos. Components • No flooded suction! • Minimum injection pressure on the discharge Dosing tank side. Electric agitator • The pressure at the discharge valve must be at Extraction device least 1 bar higher than the pressure at the suction valve.
  • Page 21 With open outflow of the dosing medium or low -[p] counter pressure A positive pressure difference of at least 1 bar must be ensured between the counter pressure at the injection point and the pressure of the dosing medium at the pump suction valve. •...

  • Page 22: Dosing Controller

    • When installing the suction line, observe the following: – Keep the suction line as short as possible. Prevent it from becoming tangled. Sensor – If necessary, use swept bends instead of elbows. – Always route the suction line up towards the suction valve.
  • Page 23 5.5.2 Sizing of tube / pipe lines Warning PVC tube DN 4 is not suitable for use as a discharge line! Connect PE tube DN 4 on the discharge side! Warning Observe the pressure stage of the used lines. The maximum permissible inlet pressure must not be exceeded! Minimum internal diameter Fig.

  • Page 24: Electrical Connections

    Observe the local safety regulations! Warning The pump housing must only be opened by personnel authorised by Grundfos Alldos! Warning Protect the cable connections and plugs against corrosion and humidity. Only remove the protective caps from the sockets that are being used.

  • Page 25: Connecting The Signal Lines For Dmi

    6.1 Connecting the signal lines for DMI 208 6.1.1 Connecting the signal lines (with control unit) Fig. 30 Connection diagrams, control units A and AR 6.1.2 Stroke signal / pre-empty signal / error signal (with control unit AR) Socket 3 Electrically isolated output for stroke signal or pre- empty signal and error signal.
  • Page 26 Assignment Empty signal Pre-empty signal Empty signal Pre-empty signal 6.1.5 Accessories: cable and plug for DMI 208 Description Product numbers 4-pole M12 plug, suitable for socket 3, with 2 m signal cable 96609017 / 321-206 4-pole M12 plug, suitable for socket 3, with 5 m signal cable...

  • Page 27: Connecting The Power Supply Cable

    Pumps with Plus system have an assisting suction. • Fit the syringe and the piece of hose. Fig. 32 Assisting suction for Plus system L1/L2 Fig. 31 Connection chart of DMI 208 Inside Warning Ensure that the pump is stopped!
  • Page 28 Sucking in dosing medium using the assisting suction for Plus system Fig. 33 Sucking in the dosing medium 7.1.3 Assisting suction for HV variant HV-variant pumps have an assisting suction. 1. Remove the cover from the priming chamber. • Fit the syringe and the piece of hose. 2.
  • Page 29 Sucking in dosing medium using the assisting suction Fig. 35 Sucking in the dosing medium 1. Attach the hose to the connection for the 7.1.5 Assisting suction for pumps with valve for deaeration line. automatic deaeration 2. Open the deaeration screw, 1 or 2 turns. At the dry suction/discharge valves: 3.

  • Page 30: Operating The Pump

    7.1.6 Starting pump without automatic deaeration 7.2 Operating the pump 1. Open the suction and discharge isolating valves, if installed. To operate the pump, refer to sections 8. Operation Maintenance, and 2. Open the deaeration valve of the dosing head by Note if necessary, section 10.

  • Page 31: Operation

    8. Operation Element Description In the event of a diaphragm leakage, the Light-emitting diode (LED) dosing liquid may leak out of the hole in • Lights up red when the the intermediate flange between the pump is stopped. pump and the dosing head. The parts •...

  • Page 32: Switching On/Off

    8.2 Switching on/off Number of strokes per Setting Function contact signal Before switching on the pump, check that it is installed correctly. Refer to The pump makes one Caution sections 5. Installation 7.1 Initial dosing stroke per contact start-up / subsequent start-up.

  • Page 33: Adjusting And Locking The Stroke Length

    8.4 Adjusting and locking the stroke length 8.5.2 With Plus system Refer to the following table with Adjust the stroke length only while the minimum stroke settings for various pump is running! pump types and dosing media at an Adjust the stroke length manually by Caution ambient temperature of approximately Caution...

  • Page 34: Adjusting The Zero Point

    8.6 Adjusting the zero point 8.7 Calibrating the dosing flow with Plus system The zero point (no dosing) of the dosing pump is factory-set to a counter pressure of 3-4 bar. If the For pumps with Plus system, the current dosing operating counter pressure at the injection unit flow can be checked during operation.

  • Page 35: Changing The Tank With Plus 3 System

    1. Remove the suction line, overflow line and The pump housing must only be deaeration line from the empty tank. opened by personnel authorised by Grundfos Alldos! – The dosing medium is then supplied from the tank (F). Repairs must only be carried out by authorised and qualified personnel! 2.
  • Page 36 1. Unscrew the suction and discharge valves. For contents and order numbers of the spare 2. Dismantle the inner valve parts: parts kits, contact Grundfos Alldos. • Standard DN 4/DN 8 valve: 4. Re-assemble and refit the valve.

  • Page 37: Replacing The Diaphragm

    9.4 Replacing the diaphragm If possible, rinse the dosing head, e.g. Note by supplying it with water. 9.4.1 Switching off the pump 1. While the pump is running, set the stroke-length adjustment knob to 100 %. 2. Switch off the pump and disconnect it from the power supply.

  • Page 38: Fault Finding Chart

    Leaking suction line. Replace or seal the suction line. not suck in. b) Cross-section of the suction line too Check with Grundfos Alldos small or suction line too long. specification. c) Clogged suction line. Rinse or replace the suction line.
  • Page 39 Fault Cause Remedy 4. Dosing flow of the a) Dosing head not fully deaerated. Repeat the deaeration. pump is inaccurate. b) Degassing medium. Check the installation. c) Parts of the valves covered in dirt or Clean the valves. incrusted. d) Counter-pressure fluctuations. Install a pressure-loading valve and a pulsation damper, if necessary.

  • Page 40: Dosing Curves

    11. Dosing curves Q [l/h] The dosing curves apply to: DMI 0.8-16 DMI 0,8 - 16 • water as dosing medium (50 Hz) (50 Hz) DMI 1.0-10 DMI 1,0 - 10 • suction line with foot valve, suction lift of 0.5 m 3 bar 3 bar 10 bar...
  • Page 41 Q [l/h] Q [l/h] DMI 1.1-16 DMI 1,1 - 16 (60 Hz) DMI 3.6-16 (50 Hz) (60 Hz) DMI 3,6 – 16 (50 Hz) DMI 1.6-10 DMI 1,6 - 10 3 bar 3 bar 3 bar 3 bar 10 bar 10 bar 10 bar 10 bar...
  • Page 42 Q [l/h] Q [l/h] DMI 4.0-8 (60 Hz) DMI 4,0 – 8 (60 Hz) DMI 6.0-8 (50 Hz) DMI 6,0 – 8 (50 Hz) 3 bar 3 bar 3 bar 6 bar 6 bar 3 bar 5 bar 5 bar 8 bar 8 bar h [%]...

  • Page 43: Disposal

    This product or parts of it must be disposed of in an environmentally sound way: 1. Use appropriate waste collection services. 2. If this is not possible, contact the nearest Grundfos or Grundfos Alldos company or service workshop. h [%] Fig. 68 DMI 14-4 (60 Hz)
  • Page 44 Safety declaration Please copy, fill in and sign this sheet and attach it to the pump returned for service. We hereby declare that this product is free from hazardous chemicals, biological and radioactive substances: Product type: ____________________________ Model number: _________________________ No media or water: _________________________ A chemical solution, name: _____________________ (see pump nameplate)
  • Page 46 Argentina China Germany Bombas GRUNDFOS de Argentina S.A. Grundfos Alldos Grundfos Alldos Ruta Panamericana km. 37.500 Lote 34A Dosing & Disinfection Dosing & Disinfection 1619 - Garin ALLDOS (Shanghai) Water Technology Co. ALLDOS Eichler GmbH Pcia. de Buenos Aires Ltd.
  • Page 47 Telefax: +66-2-744 1775 ... 6 E-mail grundfos.moscow@grundfos.com Malaysia Turkey GRUNDFOS Pumps Sdn. Bhd. Serbia GRUNDFOS POMPA San. ve Tic. Ltd. Sti. 7 Jalan Peguam U1/25 GRUNDFOS Predstavništvo Beograd Gebze Organize Sanayi Bölgesi Glenmarie Industrial Park Dr. Milutina Ivkovića 2a/29 Ihsan dede Caddesi,...
  • Page 48 Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence 15.720086 V6.0 Repl. 15.720086 V5.0 91834769 0108 Repl. 91834769 0507 www.grundfosalldos.com...

Table of Contents