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IWAKI EHN-B21SH Instruction Manual

Electromagnetic metering pump
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IWAKI
Electromagnetic Metering Pump
EHN-SH
Instruction Manual
Read this instruction manual before use of product

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Summary of Contents for IWAKI EHN-B21SH

  • Page 1 IWAKI Electromagnetic Metering Pump EHN-SH Instruction Manual Read this instruction manual before use of product...

  • Page 2: Table Of Contents

    Instruction for safety Thank you for choosing the EHN type electromagnetic metering pump. This instruction manual consists of "Safety Section", "Outline For the Safe and Section", "Installation Section", "Operation Section" and Correct Handling of the Pump "Maintenance Section", and deals with the correct installation, ●...

  • Page 3: Instruction For Safety

    We are not responsible for any accident or damage • Ventilate due to modification without first obtaining permission or No Remodeling Poisoning may result when handling toxic or odorous instructions from Iwaki. liquid. Ventilate the operating site sufficiently. • Wear protectors Caution • Spill-out accident...
  • Page 4 Instruction for safety Caution Caution • Handling of the power cable • Limited operating site and storage Use of a defective or damaged power cable may result in a Do not install or store the pump in the following places: fire or electrical shock.

  • Page 5: Outline Of Product

    2. Principle of operation pressure and voltage etc. IWAKI electromagnetic metering pump the EHN series is a dia- shown on nameplate to phragm metering pump which consists of a pump head, driving unit, confirm the pump is in your and control unit.

  • Page 6: Model Identification

    Outline of product 3. Model identification 5. Connection hose diameter code □□ 9: Rc1/4 Female screw EHN - B 11 SH 9 R - Pump : 6. Controller function code R: Standard type 1. Series 7. Special type code EHN multi voltage type 01 ~ 99 : Non standard material, Non standard connection, etc.

  • Page 7: Specification

    Outline of product 4. Specification 4-2. Control unit 4-1. Pump specification Manual Mode Operation EXT(Pule dividing or multiply ) mode Disch. Max. disch. Stroke length Stroke Average power Mass Switching Key operation Model capacity press. rate consumption ml/min Set range 1 ~ 360 spm EHN-B11 0.5~1.0...

  • Page 8: Operating Function

    Outline of product 5. Operating function EXT input (Dividing) when a set number of pumping is 5 5-1. Manual operation EXT input(Dividing) /n operation (n=5) Key operation External pulse 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 Pump operation Pump operation EXT input operation (Pulse dividing)

  • Page 9: Stop Function

    Outline of product 6. STOP function 7. Overview 6-1. M – OF setting 7-1. Overview of pump Control unit Pumps does not operate For the pump operation, because of STOP signal. the flow rate adjustment and the stroke rate adjustment·setting. Pump operation Stroke length adjustment...
  • Page 10 Outline of product 7-2. Overview of controller 7-3. Basic display. Display ON lamp lights. ON lamp blinks. Operation state or The pump is stopped by each setting value are STOP signal.. displayed. The pump is stopped in manual waiting mode while STROKE R ATE STOP signal comes.

  • Page 11: Before Installation

    Installation 1. Before installation 2. Precaution on handling ● Dropping the pump or subjecting "Strictly observe the following points." Operators and maintenance service staff must read the instruction it to strong impacts may result in manual thoroughly before installing the products. Do not operate the faulty performance.
  • Page 12 Installation ● Ventilate. ● Grounding. Poisoning may result when Risk of electrical shock. Do toxic or odorous liquid is used. not operate the pump without Ventilate the operating site suf- grounding. ficiently. ● Limited operating site and ● Do not wet or dampen. storage Do not install or store the If an electric part or wiring gets...

  • Page 13: Installation

    Installation 3. Installation ● If the pump is used to feed any liquid that generates air bub- Caution bles easily (Hydrazine solution, etc.), it must be positioned in Detecting or becoming aware of a dangerous sign or abnor- a cool, dark place away from Caution mal condition in operation, stop the operation and take the direct sunlight.

  • Page 14: Tubing

    Installation Check valve 5) Mounting check valve 4. Tubing A check valve is packed to 1) Tape the air bleeding union avoid over feeding. Be sure to (Attached to the pump) and screw it install the check valve in fol- in the pump head.

  • Page 15: Electrical Wiring

    Installation 5. Electrical wiring d. Discharge pressure (Pipe resistance, discharge head or Caution so) is below 0.13MPa. (Load pressure is 0.049MPa for C36). Electrical works must be done by a qualified person. We are • The check valve should be not responsible for any injury and damage by any person installed at discharge tube end at other than a qualified person,...
  • Page 16 Installation Make sure wires are connected Surge absorption a. Install a surge absorption element securely via crimp contacts at the element (Varister or so of 2000A or more end of the power cord. durability) at pump power connec- tion part. Caution b.
  • Page 17 Installation If the relay of contact point volume 5A is used for EHN, it can Caution be used for max. 150 thousands times of ON/OFF operation. ● Wiring of EXT and STOP If 150 thousands times or more of ON/OFF operation are Do not install the power cord and the EXT and STOP wires in required, or a power source is shared with a large capacity parallel.
  • Page 18 Installation ● Wiring procedure Caution Used cord must be 7.8 mm of outer diameter. If other diameter is used, perfect connection and sealing can not be obtained, mal- function of an electronic circuit may result. 1) Remove gasket on the top of control unit and then remove screw , gasket and two screws above stroke length adjusting...
  • Page 19 Installation 6) Mount control cover and mount the controller in the reverse proce- 5) Remove plug from socket . Connect a signal cord to the plug with screw driver and mount it on the socket . Pull the dure of above items 1) and 2). signal cord from the outside of the control unit to adjust the slack Tightening torque of each screw is as follows: and then mount the cord nut...

  • Page 20: Operation

    Operation 1. Operation 1-1. Bleeding Bleeding is a process undertaken to eliminate air inside the suction- After the installation, piping, and wiring processes are completed, side tube and the pump head. Make sure to carry out bleeding prior operate the pump in accordance with the following steps. to the initial operation of the pump and/or after replacing the liquid Caution in the tank.
  • Page 21 Operation ● Air elimination To start/stop pump 1) Turn on power. ON lamp (green) lights when turning on power. The pump enters 1) Start the pump. Lamp blinks the waiting mode in the manual mode. (When power is turned on to show pump operation.
  • Page 22 Operation 1-2. Adjustment of discharge capacity 1) Procedure to adjust dis- Discharge capacity can be adjusted by adjusting a stroke rate or charge capacity Fixed stroke rate 360spm (Stroke rate is fixed at 100%.) Determine a suitable stroke length, however, adjust it with stroke rate adjustment. Stroke stroke length and stroke 270spm length adjustment is auxiliary way to cover the range where is not...
  • Page 23 Operation 2) Adjustment of stroke rate Caution Stroke rate can be set by UP Never turn stroke length adjust- and DOWN keys. ing knob when pump is stopped. ● Stroke rate of the plunger per minute is adjustable between 1 3) Stroke length adjustment ~ 360 spm.
  • Page 24 Operation 1-3. Precaution when pump is stopped ● In case pump is stopped for a long time (more than one month), operate the pump with clean water for 30 minutes to clean wet-end of pump and piping. ● When starting the pump after a long time stoppage, clean valve set if the pump does not suck up liquid and remove adhered matters.

  • Page 25: Operation Of Controller

    Operation 2. Operation of controller 2-1. Control unit operation diagram This pump is controlled by operating the control unit. Read this chapter thoroughly 3.Key lock display Power ON for correct operation. Control function is STROKE R ATE different at each operating mode. shows Version indication The figure on right shows the operation...
  • Page 26 Operation 1) When the pump is powered for the first time, built-in program 10) To change STOP setting, first push key as pressing key in version is shown and then manual waiting mode appears. When manual waiting mode to move to anti-chattering setting display. pump is powered on and after the second time, pump starts with And then push key once to move to STOP setting display.
  • Page 27 Operation 3) Set stroke rate 2-3. Setting and operation of control unit 2-3-1. Manual operation 1) Turn on power STROKE RATE STROKE RATE Change a stroke rate shown on display by key. If either key is pushed continuously for more than 3 seconds, a When power is turned on for the first time, program version is stroke rate changes quickly.
  • Page 28 Operation 3) Set EXT operation mode 2-3-2. EXT operation 1) Turn on power STROKE RATE STROKE RATE In the manual waiting mode, push key as pressing key to When the pump is turned on for the first time, program version move to the EXT mode.
  • Page 29 Operation 2-3-3. Key lock function During manual operation At manual waiting mode or EXT mode. 1) The pump condition when keypad lock can be active. At the manual waiting mode During manual operation STROKE RATE STROKE RATE STROKE RATE STROKE RATE A key mark is indicated during the manual operation or EXT mode as the keypad operations become ineffective.
  • Page 30 Operation 2-3-4. Selection of pulse dividing/pulse multiply 3) Move to the selection display of pulse dividing/pulse multiply 1) Turn on power STROKE RATE STROKE RATE When power is turned on for the first time, program version is Push key to move to the selection display of pulse dividing/ shown briefly and the manual waiting mode appears.
  • Page 31 Operation 5) Return to the EXT mode. 2) Move to the EXT mode STROKE RATE STROKE RATE Push key to move to the EXT mode. Push key as pressing key in the manual waiting mode to move to the EXT mode. Do not input any signals at this phase. 2-3-5.
  • Page 32 Operation 2-3-6. Display selection mode of EXT operation 4) Set the dividing ratio or multiply ratio 1) Turn on power STROKE RATE STROKE RATE When power is turned on for the first time, program version is shown briefly and the manual waiting mode appears. On and after key to set the dividing ratio or multiply ratio in the the second time the pump is turned on, the pump restarts in the setting display.
  • Page 33 Operation 3) Move to the display selection mode of EXT operation 5) Return to the EXT mode STROKE RATE STROKE RATE Push key to return to the EXT mode. The above display shows when the spm indication is selected. Push key while pressing key to move to the display selec- tion mode of EXT operation.
  • Page 34 Operation 3) Change the anti-chattering value 2-3-7. Setting of anti-chattering value 1) Go to the manual waiting mode STROKE RATE STROKE RATE Push key to change T-5, T-10 or T-50. If the pump is EXT mode, push key. If "STOP" or "–STOP" is shown, release the STOP function because STOP function is 4) Fix the setting and return to the manual waiting mode.
  • Page 35 Operation 2-3-8. Setting of STOP function STROKE RATE 1) Go to the manual waiting mode STROKE RATE Push key once to show either "M-OF (factory setting)" or "M- ON" on display. 4) Change the STOP setting If the pump is in the EXT mode, push key.
  • Page 36 Operation 2-3-9. Release of STOP function 3) Move to the STOP setting display. 1) Move to the waiting mode of the STOP function. STROKE RATE STROKE RATE Push key once. Display shows "M-OFF" or "M-ON". The STOP function can be released by changing this setting. If display shows "STOP", push key to stop pump operation.

  • Page 37: Maintenance

    Maintenance Instruction for safety 1. Troubleshooting Trouble Cause Troubleshooting ● ○ Faulty wiring or disconnection Correct wiring. Maintenance, inspection, disassembling and assembling should ○ in wiring Trace cause and raise voltage to Pump ● be done according to this instruction manual. Do not handle the Lowered voltage specified level.

  • Page 38: Maintenance And Inspection

    Maintenance 2. Maintenance and inspection 3. Wear parts Stop the pump immediately when detecting any abnormality in daily If the pump is to be used for a long period, wear parts should be inspection. Take measures according to "Troubleshooting" section. replaced in proper period.

  • Page 39: Dismantlement And Assembly

    Maintenance 4. Dismantlement and assembly Method to release pressure: 1) Stop the pump Warning 2) Turn the adjusting screw to open discharge pressure. ● Wear protector Before works ● When the pump is disassembled, pay attention to the liquid You may be injured by chemical or toxic liquid if they are splashed or you touch them.
  • Page 40 Maintenance ■ Assembly Assembly is done in reverse order to disassembly. Pay attention to the fol- lowing points. • Pay attention to arrangement of the Discharge side valve set. Wrong arrangement and direction will cause failed pumping (liquid leakage, decreased discharge capacity).
  • Page 41 Maintenance 4-2. Bleed assembly Warning Turn the adjusting screw anticlockwise to dismantle Pay attention not to lose the diaphragm spacer and to apply the bleed assembly. correct number of the diaphragm spacer. 0 to several pieces ● Be careful not to loose the valve(33), seal of the diaphragm spacers are put between the retainer and ring(32) and spring(31).
  • Page 42 Maintenance 1. Assembly of diaphragm 1) Operate the pump to set stroke Bracket spacer length at 0% and stop it. Diaphragm spacer 2) Put the retainer and diaphragm Diaphragm spacer (if used) through the threaded part of new dia- phragm. Retainer Plunger Caution...

  • Page 43: Exploded View

    Exploded view Parts are completely disassembled for easy understanding but the extent of disassembling is limited to the instruction shown on Maintenance section. Control unit Gasket Screw Cord nut Gasket Cord gasket Control cover Spacer Retainer Valve set Case gasket Controller case Diaphragm Tapping screw...
  • Page 44 Exploded view ■ Pump head Parts name Q'ty Pump head Fitting Diaphragm Retainer Valve guide Valve seat Valve Valve gasket B Diaphragm spacer Hex. socket cap bolt 28 Valve gasket A Seal nut 30 Adjusting screw Spring Seal ring Valve 34 Air bleeding union Spacer Q'ty varies with each product.

  • Page 45: Outline Dimension

    Outline dimension ● EHN-B11, B21(SH) ● EHN-C21(SH) - 44 -...
  • Page 46 Outline dimension ● EHN-C31, C36(SH) - 45 -...
  • Page 47 ( )Country codes IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 Japan TEL:(81)3 3254 2935 FAX:3 3252 8892(http://www.iwakipumps.jp) TEL : (1)508 429 1440 FAX : 508 429 1386 TEL : (49)2154 9254 0 FAX : 2154 1028 U.S.A. : IWAKI America Incorporated...

This manual is also suitable for:

Ehn-c21shEhn-c31shEhn-b11shEhn-sh seriesEhn-c36sh

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