IWAKI PUMPS EWN Series Instruction Manual
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IWAKI PUMPS EWN Series Instruction Manual

Electromagnetic metering pump
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Iwaki
Electromagnetic Metering Pump
EWN-Y (North America)
Instruction manual
Thank you for choosing our product.
Please read through this instruction manual before use.
This instruction manual describes important precautions and
instructions for the product. Always keep it on hand for quick
reference.
2011 IWAKI CO., LTD.
WT-MN-026-01

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Summary of Contents for IWAKI PUMPS EWN Series

  • Page 1 WT-MN-026-01 Iwaki Electromagnetic Metering Pump EWN-Y (North America) Instruction manual Thank you for choosing our product. Please read through this instruction manual before use. This instruction manual describes important precautions and instructions for the product. Always keep it on hand for quick reference.

  • Page 2: Order Confirmation

    Order confirmation Open the package and check that the product conforms to your order. If any problem or inconsistency is found, immediately contact your distribu- tor. a. Check if the delivery is correct. Check the nameplate to see if the information such as model codes, discharge capacity and discharge pressure are as ordered.

  • Page 3: Table Of Contents

    Contents Order confirmation ..................... 2 Safety instructions ............... 7 Warning ......................8 Caution ......................10 Precautions for use ..................14 Overview ..................18 Introduction .....................18 Pump structure & Operating principle ............18 Auto degassing system ................19 Features ...................... 20 Operational functions ................... 20 Manual mode ....................
  • Page 4 Part names...................... 35 Pump......................35 Operational panel ..................36 Basic displays & Pump states ..............37 Identification codes ..................38 Pump/Drive units ..................38 Installation .................. 40 Pump mounting ....................40 Pipework ......................41 Tube connection ..................41 Check valve mounting ................43 Wiring (pump) ....................
  • Page 5 Operation programming ................67 Programming flow ..................70 Manual operation ..................72 EXT operation ....................73 Digital control ..................73 Buffer ON/OFF selection (MULT/DIV) ............74 Analogue proportional control ..............75 Priming function ..................80 Keypad lock ....................80 Keypad lock activation ................80 Keypad lock release ................81 Emergency stop with a keypad lock state ..........81 Unit change ....................
  • Page 6 Before replacement ...................105 Valve set replacement ................105 Discharge valve set disassembly/assembly .........105 Suction valve set disassembly/assembly ..........107 Spacer set replacement (Auto degassing type) ........108 Air vent valve set replacement (Auto degassing type) ......109 Diaphragm replacement ................109 Exploded view ....................112 Pump head, Drive unit & Control unit ............112 Pump head ....................

  • Page 7: Safety Instructions

    Safety instructions Read through this section before use. This section describes important information for you to prevent personal injury or property damage. ■ Symbols In this instruction manual, the degree of risk caused by incorrect use is noted with the following symbols. Please pay attention to the information associated with the symbols.

  • Page 8: Warning

    WARNING Turn off power before service Risk of electrical shock. Be sure to turn off power to stop the pump and related devices before service is performed. Couper l’alimentation électrique de la pompe avant intervention Intervenir sur la pompe sans avoir au préalablement coupé Electrical l’alimentation électrique peut déclencher des décharges élec- shock...
  • Page 9 Wear protective clothing Always wear protective clothing such as an eye protection, chemical resistant gloves, a mask and a face shield during disassembly, assem- bly or maintenance work. The specific solution will dictate the degree of protection. Refer to MSDS precautions from the solution supplier. Porter un équipement de protection Wear Toujours porter un équipement de protection (lunettes, gants résist-...

  • Page 10: Caution

    CAUTION Qualified personnel only The pump should be handled or operated by qualified personnel with a full understanding of the pump. Any person not familiar with the prod- uct should not take part in the operation or maintenance of the pump. Opérateur qualifié...
  • Page 11 Keep electric parts and wiring dry Risk of fire or electric shock. Install the pump where it can be kept dry. Ne mouillez pas les parties électriques ou les câbles Risque d’incendie ou de décharge électrique. Installez la pompe Prohibited dans un endroit sec.
  • Page 12 Do not use the pump in a wet location The pump is not waterproof. Use of the pump in wet or extremely humid locations could lead to electric shock or short circuit. N’utilisez pas la pompe sous l’eau La pompe n’est pas complètement étanche. Utiliser la pompe dans Prohibited l’eau ou dans un endroit très humide peut créer une décharge élec- trique ou un court-circuit.
  • Page 13 Disposal of a used pump Dispose of any used or damaged pump in accordance with local rules and regulations. If necessary, consult a licensed industrial waste disposal company. Elimination des pompes usées Requirement Elle doit se faire en conformité avec les règles locales en vigueur (consultez une entreprise certifiée et spécialisée).

  • Page 14: Precautions For Use

    Precautions for use • Electrical work should be performed by a qualified electri- cian. Otherwise, personal injury or property damage could result. Le raccordement électrique de la pompe doit être effectué Caution par du personnel qualifié sinon, il pourrait y avoir un dom- mage corporel ou incorporel.
  • Page 15 • When two or more pumps are installed together, vibration may be significant, resulting in poor performance or failure. Select a solid foundation (concrete) and fasten anchor bolts securely to prevent vibration during operation. Si plusieurs pompes sont installées ensemble, elles intera- Caution gissent et les vibrations peuvent devenir importantes, ce qui engendre des performances médiocres ou des ratures.
  • Page 16 • Use care handling the pump. Do not drop. An impact may affect pump performance. Do not use a pump that has been damaged to avoid the risk of electrical damage or shock. Veillez à ne pas laisser tomber la pompe sur le sol. Un impact important pourrait réduire les performances de la pompe.
  • Page 17 • Solution in the discharge line may be under pressure. Release the pressure from the discharge line before dis- connecting plumbing or disassembly of the pump to avoid solution spray. Le liquide au refoulement peut être sous pression. Requirement Relâchez la pression du refoulement avant de démonter la pompe ou d’enlevez le tubage pour éviter tout jet de liquide.

  • Page 18: Overview

    Overview Pump characteristics, features and part names are described in this section. Introduction Pump structure & Operating principle The EWN-Y is a diaphragm metering pump which consists of a pump head, drive unit and control unit, and features the external and feedback control with the EFS flow sensor or other devices.

  • Page 19: Auto Degassing System

    ■ Auto degassing system Air vent port Expelled to air or plumbed Outlet port (Manual) back to the supply tank Automatic air vent valve body LOCK Air vent valve Pump head valve Pump head Inlet port • Once air is entrained through the inlet port, the working pressure difference between the pump head valve and the air vent valve separates entrained air from liquid.

  • Page 20: Features

    Features ● Multivoltage operation The EWN-Y series is a multivoltage type (100-240VAC) and can be selected without concern for local power voltage. ● IP rating of 65 The sealed drive unit and control unit assure IP65. * This pump is not waterproof. Protect the pump with a cover when installing it out of doors.

  • Page 21: Ext Mode

    EXT mode ■ Digital control Multiplier programming The pump operation by the external signal. Program a multiplier before opera- tion. 1-999 shots can be allocated to one pulse signal. See page 73 for detail. *In the EXT operation, the pump runs at a MAN speed. Example) When the multiplier is programmed to 5, the pump makes five shots per signal.
  • Page 22 Divisor programming The pump operation by the external signal. Program a divisor before operation. 1-9999 pulse signals can be allocated to make one shot. * The pump can not run over a MAN speed even if a divisor is set to run the pump be- yond that speed.

  • Page 23: Analogue Proportional Control

    ■ Analogue proportional control ANA. R (analogue rigid) programming The pump increases/decreases a stroke rate in proportion to 0-20mA. Four programs(4-20mA, 20-4mA, 0-20mA, 20-0mA) are provided. See page 75 for detail. 100% Condition The left graph is in the fol- lowing programs.

  • Page 24: Prime Mode

    <BOX> A stroke/flow rate changes with a current value by a programmed line. The rate does not exceed the Set Point 2 but then falls to 0 before the Set Point 1. 100% Condition SP.2 The left graph is in the fol- lowing setting.

  • Page 25: Control Functions

    Control functions ■ STOP function The start/stop of the pump can be controlled by external devices such as a level sensor. This function is dominated by the PRIME or AUX function. When "CL-ON" is selected... The pump stops while receiving the external signal via the STOP terminal (closed circuit). *The pump resumes operation when the STOP signal is released.

  • Page 26: Aux Function

    ■ AUX function The pump runs at the maximum stroke rate of 360(/240/180)spm while receiv- ing the external signal via the AUX terminal. Use this function for degassing. Pulse signal input Pump operation 1 2 3 4 5 1 2 3 ■...

  • Page 27: Out2 (Photomos Relay)

    when a measured flow is out of allowable range in analogue control with the EFS flow sensor (FL.ER: Out of measurement alarm) Condition Flow rate SP.2 The left graph is in the fol- 40mL/min lowing programs. SP1 = 20mL/min at 4mA SP.1 20mL/min SP2 = 40mL/min at 20mA...

  • Page 28: Control With External Devices

    Control with external devices Combination with the EFS flow sensor The combination of the EFS flow sensor (purchase separately) and the EWN- B11Y/-B16Y/-B21Y/-C16Y enables feedback control. Digital control with a multi- plier and a divisor is not enabled while the EFS sensor is connected. Observe the following points.

  • Page 29: Feedback Control

    Iwaki EFS-05-FT/-FH Electromagnetic Flow Sensor DIN cable ■ Feedback control (See page 94) The pump automatically controls a stroke rate to meet the target flow rate, measuring an actual flow with the EFS flow sensor. * The pump controls a stroke rate in the range of 0-360(240/180)spm. The flow rate changes with a stroke rate and discharge pressure.

  • Page 30: Batch Operation

    ■ Batch operation (See page 95) The pump runs until meeting the set volume per pulse and stops afterwards. Actual output from the pump is ensured by the assistance of the EFS flow sensor. The set volume shown on the pump screen is getting lower as feeding advances.

  • Page 31: Combination With The Fcp And Fcm

    Combination with the FCP and FCM The FCP-1 VC/VE/PC/PE and FCM-VC-1/-2 or FCM-VH-1/-2 detect each pul- sation flow from the pump and feed back pulse signals to the pump. The pump recognizes upset conditions when the feedback signals does not match the number of pump shots.

  • Page 32: Mode

    ■ B. MODE The pump outputs an alarm via OUT1, keeping its operation, when the pump does not receive a feedback signal from the FCP/FCM for the 1st set number of shots (FC.MUM: Number of dry shots). The pump stops running with "FLOW"...

  • Page 33: Mode

    ■ C. MODE The pump stops running with "FLOW" and "Err" on the pump screen, output- ting an alarm via OUT1 when not receiving a feedback signal from the FCP/ FCM for the set number of shots (FC.POF: Dry shots to pump off) after the set number of dry shots (FC.MUM: Number of dry shots).

  • Page 34: Mode

    ■ D. MODE The pump continues running at a MAN speed for the 1st set time (FC.TIM: De- tection time) and then a maximum speed for the 2nd set time (FC.PRM: Prim- ing time). The pump stops running with "FLOW" and "Err" on the pump screen, outputting an alarm via OUT1 when not receiving a feedback signal from the FCP/FCM over the return time (FC.RTN: Return time).

  • Page 35: Part Names

    Part names Pump Adjusting screw Control unit Used for the start/stop of Used for opening the air vent port. the pump and stroke rate adjustment/programming. Air vent port Always connect a tube. Be sure to return the tube end to a sup- ply tank or a container.

  • Page 36: Operational Panel

    Operational panel START/STOP key Used for starting/stopping operation or entering a setting. EXT key Used for entering the EXT mode. Display An operational status, a select- ed mode and a programmed value are shown here. UP key Used for increasing numeric val- ues or selecting a programming mode.

  • Page 37: Basic Displays & Pump States

    ■ Basic displays & Pump states Main character field Pulse reception from the FCP/ FCM or calibration mode Operation mode Calibration mode Units Operation setting Measured flow display by the EFS flow sensor Error condition Keypad lock Setting layer 1/2 and OUT1/2 A buffer stores excessive signals.

  • Page 38: Identification Codes

    Identification codes The model codes of the pump/drive units and the control unit represent the fol- lowing information. Pump/Drive units EWN - B 11 VC f g h a. Series name EWN: Multivoltage electromagnetic metering pump b. Drive unit (Average power consumption) B: 20W C: 24W c.
  • Page 39 e. Tube connection bore Tube size (ID×OD) Wet end materials Pump model VC/VH/VE/PC/PH/PE/TC/ ø1/4"×ø3/8" EWN-09/-11/-16/-21 VC-C/VH-C/VE-C/VC-A/VH-A ø3/8"×ø1/2" VC/VH/VE/PC/PH/PE/TC EWN-31/-36 1/4-18NPT FC/SH/SH-H EWN-11/-16/-21/-31/-36 code*¹ IN/AIR: ø1/4"×ø3/8" PC-H/PH-H/PE-H EWN-11/-16 OUT: 1/4×18NPT IN: ø15×ø22 P6-V EWN-31 OUT: ø3/8"×ø1/2" VC/VH/VE/PC/PH/PE/ ø4×ø9 EWN-09/-11/-16/-21 VC-C/VH-C/VE-C/VC-A/VH-A VC/VH/VE/PC/PH/PE/TC/ ø4×ø6 EWN-09/-11/-16/-21 VC-C/VH-C/VE-C/VC-A/VH-A...

  • Page 40: Installation

    Installation This section describes the installation of the pump, tubing and wiring. Read through this section before work. Observe the following points when installing the pump. • Risk of electrical shock. Be sure to turn off power to stop the pump and related devices before service is performed.

  • Page 41: Pipework

    Pipework Connect tubes to the pump and install a check valve. Tube end (Side view) Before operation • Cut the tube ends flat. Necessary tools • Adjustable wrench or spanner Tube connection Tube a. Pass a tube into the fitting nut and Fitting nut stopper and then slide it down to the adapter as far as it will go.
  • Page 42 Connect tubes into the inlet and outlet. Outlet Tube Inlet Tube Connect an air bleed tube into the Air vent port air vent port. Route back the other tube end to a Air bleed tube supply tank or a container. Determine an air vent port direction.

  • Page 43: Check Valve Mounting

    Check valve mounting Install an optional check valve to the EWN for the prevention of a back flow, si- phon and overfeeding. In the following cases be sure to install the check valve. • A suction side liquid level is higher than a discharge side or an injection point at atmospheric pressure.
  • Page 44 Mount a check valve at the discharge tube end. * The CAN check valve has R1/2 and R3/8 thread connections as well as a tube connection. Cut off and adjust the connection length to fit the check valves into tubing. CAN check valve Outer dia Ф9 R1/2...

  • Page 45: Wiring (Pump)

    Wiring (pump) Wiring for a power voltage and an external signal. Observe the following points during wiring work. • Electrical work should be performed by a qualified electrician. Always observe applicable codes or regulations. • Observe the rated voltage range, or the electrical circuit in the control unit may fail.

  • Page 46: End Terminals

    End terminals See the following diagram for detail. STOP terminal Output terminal Input terminal Sensor signal Power voltage/Earthing Check that the main power is turned off. Insert the plug all the way seated in a jack. This product have two power wires and one earth wire, and is classified as class Ι.
  • Page 47 NOTE • Do not share a power source with a high power device which may generate surge voltage. Otherwise an electronic circuit may fail. The noise caused by an inverter also affects the circuit. • Energize the pump with a power voltage via a mechanical relay or switch. Do not fluctuate the voltage, or CPU may malfunction.

  • Page 48: Signal Wire Connection

    Precautions for ON-OFF control by a mechanical relay The control unit is equipped with CPU. Always start/stop the pump by the STOP signal for ON-OFF control. Try not to turn on and off the main power. Otherwise, observe the following points. •...

  • Page 49: Stop Signal

    NOTE • Do not lay on these signal cables in parallel with a power cable or combine them in a concentric cable (ex. 5 wires cable). Otherwise noise is generated through the cables due to induction effect and it results in malfunction or failure. •...

  • Page 50: Input Signal

    ■ Input signal Connect signal wires to the input terminal via a DIN 5-pin connector for digital/ analogue-proportional control, interlock/AUX input or analogue signal output. • When using an open collector... Pay attention to polarity. PIN 1 and PIN3 are plus(+), and PIN 4 is minus(-). •...

  • Page 51: Wiring (External Devices)

    Wiring (external devices) EFS flow sensor mounting (purchase separately) Observe the following points • Mount the EFS flow sensor before anchoring/plumbing the pump. • Be sure to to power off the pump before connecting the DIN cable. • Use care handling the EFS flow sensor. Do not drop or hit. An impact may affect performance.
  • Page 52 Mount the air vent body A. Air vent body A Lock nut a. Hand-tighten the lock nut, holding the air vent body A. b. Turn the lock nut 90 degrees clockwise further with an adjustable wrench or spanner. Connect the sensor cable to the sensor signal terminal. NOTE •...

  • Page 53: Fcp/Fcm Mounting (Purchase Separately)

    FCP/FCM mounting (purchase separately) See each instruction manual of the FCP flow counter and FCM flow checker for detail. ■ Flow counter (FCP) Remove the adjusting screw and install the FCP flow counter instead. Flow counter ■ Flow checker (FCM) Remove the fitting and take out the valve set from the pump head.

  • Page 54: Fcp/Fcm Wiring

    Connect the flow checker body and the pump head with the Lock nut. Turn the Lock nut anticlockwise to Plate tighten them. Take care not to drop Float the Plate, O ring or Float. Note that O ring Red mark the Float has a mounting direction.

  • Page 55: Operation

    Operation This section describes pump operation and programming. Run the pump after pipework and wiring is completed. Before operation Check a flow rate, tubing and wiring. And then perform degassing and flow rate adjustment before starting operation. Points to be checked Before operation, check if...

  • Page 56: Use Of Hexagon Wrench Instead Of A Torque Wrench

    ■ Use of hexagon wrench instead of a torque wrench Fasten the fixing bolts as tight as can be by the hand with the straight long part of a hexagon wrench (a) and further turn the bolts clockwise 90 degrees with the short part (b).

  • Page 57: Degassing

    Degassing The gas needs to be expelled from the pump and tubing by degassing. Normal performance can not be obtained with gas in the pump. Conduct degassing in the following cases. • When the pump starts to run for the first time •...
  • Page 58 Run the pump at the maximum stroke rate. Select a convenient way from the following. • Set a stroke rate to the top and push the start/stop key. * Push the start/stop key to return to the MAN mode from the EXT mode as necessary.

  • Page 59: Ewn Fc/P6-V

    Keep the pump running for more than ten minutes for degassing. Stop the pump by... • pushing the start/stop key once or • stopping the AUX signal or • releasing the UP and DOWN keys Rotate the adjusting screw clockwise to close the air vent port. Check liquid is delivered to the discharge line.
  • Page 60 Run the pump at the maximum stroke rate. Select a convenient way from the following. • Set a stroke rate to the top and push the start/stop key. • Enter the external signal via the AUX terminals. • Press and hold both the UP and DOWN keys. Keep the pump running for more than ten minutes for degassing.

  • Page 61: Flow Rate Adjustment

    Flow rate adjustment A flow rate can be adjusted by adjusting a stroke rate and stroke length. The stroke rate is indicated in spm or %. 100% stroke rate means the maxi- mum spm. Stroke rate adjustment is a main way to adjust a flow rate. Stroke length is the moving distance of the plunger.
  • Page 62 Flow rate, stroke rate and stroke length B type C type Fixed stroke rate Fixed stroke rate Stroke rate is fixed at 100% Stroke rate is fixed at 100% Stroke rate is fixed at 75% Stroke rate is fixed at 75% Stroke rate is fixed at 50% Stroke rate is fixed at 50% Stroke length adjustment...

  • Page 63: Stroke Rate Adjustment

    ■ Stroke rate adjustment A stroke rate can be set by keypad operation from 0.1 to 100%. The relation between a flow rate* and a stroke rate is shown as below. Fixed stroke length * The flow rate described on the nameplate is at 100%.

  • Page 64: Stroke Length Adjustment

    ■ Stroke length adjustment Fixed stroke rate A stroke length can be adjusted when the moving dis- tance of the plunger is changed by the stroke length knob. The stroke length adjustment range is 50-100% for the B type, 40-100% for C type. The relation between a flow rate* and a stroke length is shown right.

  • Page 65: Flow Calibration

    ■ Flow calibration Entering liquid volume per shot, operation can be monitored in GPH, L/h or mL/m. Press and hold the DISP key for 3 seconds to move from the wait state to the calibration mode. The screen shows "TEST". 3 sec Run the pump.

  • Page 66: Before A Long Period Of Stoppage (One Month Or More)

    Before a long period of stoppage (One month or more) Clean wet ends and the inside of tubing. • Run the pump with clean water for about 30 minutes to rinse chemicals off. Before unplugging the pump • Always stop the pump by key operation and wait for three seconds before unplugging the pump.

  • Page 67: Operation Programming

    Operation programming Operation at each mode is individually set and controlled by keypad operation. Select a proper mode to make optimal operation. Default setting and setting range Parameters Setting ranges STEP Default Flow unit selection %, spm, GPH, L/h, mL/m 0.1 - 100.0% 100.0 1 - 360 spm...
  • Page 68 Parameters Setting ranges STEP Default 1.OUT.T 1.ALM/1.FL.ER/1.F.CHK/ 1.ALM (OUT1 selection) 1.OFF 1.STOP ON/OFF (STOP alarm) 1.P.STP ON/OFF (Pre-STOP alarm) 1.I.LOC ON/OFF (Interlock alarm) 1.COMP (BATCH/MULT comple- ON/OFF tion ) 1.FLOW 0.1 - 999.9 mL/m 2.0 mL/m OUT1 (Out of measure- (0.006 - 59.994 L/h) (0.120 L/h) ment)
  • Page 69 Parameters Setting ranges STEP Default 0.0 - 100.0 % 0.0 % 0 - 360 spm 0 spm ANA.4 0.0 - 999.9 mL/m 0.0000mL/m (4mA) (0.000 - 59.994 L/h) 0.001 (L/h) (0.000 - 15.829 GPH) (GPH) ANA- LOGUE 0.0 - 100.0 % 100.0 % 0 - 360 spm 360 spm...

  • Page 70: Programming Flow

    Programming flow Power ON Calibration mode Manual mode 3 sec. Stroke rate setting EXT mode Manual operation 1 sec. Save Cancel Prime mode Flow rate display ANA.V programming routine ANA.R programming routine Operation programming...
  • Page 71 1 sec. User mode OUTPUT setting EXT mode selection INPUT setting EXT mode setting See ANA-V programming routine See ANA-R programming routine FCP/FCM setting Keypad lock PIN number setting 3 sec. Any key other than Operation history 3 sec. Operation programming...

  • Page 72: Manual Operation

    Manual operation Run or stop the pump by keypad operation. Turn on power. The LED lights and a display related to the current mode appears on the screen. * The pump waits in the manual mode when turn- ON LED ing on power with a default setting or calls up a previous mode at the last shutoff.

  • Page 73: Ext Operation

    EXT operation ■ Digital control The pump operation is controlled by the external (pulse) signal. Set a multiplier or a divisor before operation. Digital control is divided into two mode as below. DIV mode Program the number of signals per shot to control the pump. MULT mode Program the number of shots per signal to control the pump.

  • Page 74: Buffer On/Off Selection (Mult/Div)

    Push the EXT key once. Use the UP or DOWN key to program a divisor or a multiplier. * Shift to the next digit by pushing the DISP key for divisor programming. Divisor programming Multiplier programming Push the EXT key to return to the EXT mode selection. Push the start/stop key to return to EXT mode.

  • Page 75: Analogue Proportional Control

    ■ Analogue proportional control Select "ANA.V" or "ANA.R" in USER mode. When "ANA.R" is selected... The preset proportional control programs of "4-20", "20-4", "0-20" and "20-0" are available. When "ANA.V" is selected... A proportional control pattern can be newly programmed according to the operational behaviour of the LINE, BOX or LIMIT.
  • Page 76 Return to the MAN mode (pump stops). Press and hold the EXT key for 3 seconds to call up the User mode menu. Select "PG.EXT", "ANA" and then "ANA.R" with the EXT key. Return to the EXT mode selection after the selection by pushing the start/stop key a few times.
  • Page 77 ANA.V (Analogue variable) Enter EXT mode. Push the EXT key to move from manual mode to EXT mode. * Push the start/stop key and stop the pump when it is running. Then call up EXT mode. EXT mode Press and hold the EXT key for one second and enter the EXT mode selection.
  • Page 78 Return to the MAN mode (pump stops). Press and hold the EXT key for 3 seconds to call up the User mode menu. Select "PG.EXT", "ANA" and then "ANA.V" with the EXT key. Select operational be- haviour of "LINE", "BOX" or "LIMIT" as well. See below. Return to the EXT mode selection after the selection.
  • Page 79 Push the EXT key and enter a current value and a stroke rate at SP1 and SP2. Shift to the next digit by pushing the DISP key. Enter a current value at set point 1. Enter a stroke rate at set point 1.

  • Page 80: Priming Function

    Priming function This key operation runs the pump at the maximum stroke rate in operation. Press and hold both the UP and DOWN keys. The pump runs at the maximum stroke rate while both keys are pressed. Press & hold both keys.

  • Page 81: Keypad Lock Release

    ■ Keypad lock release Push any key other than the start/stop. Enter pin number. Shift to the next digit by pushing the DISP key. *A default PIN number is "00000". Push the EXT key The keypad lock state then will be released. * If the pin number is not correct, "FAIL"...

  • Page 82: Unit Change

    Unit change %, spm, GPH, L/h and mL/m cycle through every time the DISP key is pushed. To monitor a flow in the flow rate units, follow the flow calibration procedure. See page 65 for detail. A stroke rate is shown in % with default setting. ■...

  • Page 83: User Mode

    User mode The following features can be programmed. Get access to the User mode by pushing the EXT key in the wait state (MAN mode). OUTPUT programming (page 84) Parameter setting of the OUT1, OUT2 and analogue output. INPUT programming (page 87) Parameter setting of the INPUT.

  • Page 84: Output Programming

    ■ OUTPUT programming Parameter setting for the OUT1(mechanical relay), OUT2(PhotoMOS relay) and analogue output. OUT1 Enabled Disabled Selection menus appear keys to scroll. when "1.ALM" is se- lected. See the 1.ALM selection menus. Synchronous output (sensor) OUT2 Synchronous output (pump) Enabled Selection menus ap- pear when "2.ALM"...
  • Page 85 1.ALM selection menus (OUT1 mechanical relay) Enable/disable STOP alarm output. Enable/disable Pre-STOP alarm output. Enable/disable Interlock alarm output. Enable/disable completion alarm of the digital control (MULT) or batch operation. keys to scroll. Operation programming...
  • Page 86 2.ALM selection menus (OUT2 photoMOS relay) Enable/disable STOP alarm output. Enable/disable Pre-STOP alarm output. Enable/disable Interlock alarm output. Enable/disable completion alarm of the digital control (MULT). keys to scroll. 86 Operation programming...

  • Page 87: Input Programming

    Analogue out The pump outputs a current value of 4-20mA according to a flow/stroke rate. * The default setting is 0spm at 4mA and 360spm at 20mA. * One of the flow rate units of mL/m, L/h or GPH is available when the EFS flow sensor is mounted.
  • Page 88 Select an option to determine pump behaviour with STOP signal. CL-ON : Pump stops at signal input. CL-OFF: Pump runs at signal input. Select an option to determine STOP LED behaviour with Pre-STOP signal. CL-ON : LED lights orange at signal input. CL-OFF: LED stops lighten- ing at signal input.

  • Page 89: Ext Mode Setting

    ■ EXT mode setting Selection of buffer on/off and ANA.R/ANA.V for the EXT mode. Buffer ON/OFF selection (MULT/DIV) See page 74 for detail. Analogue proportional control See page 75 for detail. ■ FCP/FCM programming Selection of the operational behaviour with the FCP or FCM. * This parameter is not enabled when the EFS flow sensor is connected to the pump.
  • Page 90 (See page 89.) When A, B or C.MODE is selected. Set the FC.MUM (number of dry shots) to determine upset conditions. Set the FC.POF (dry shots to pump off) in between 1 and 60 to count down the pump shots to stop. "FLOW" keys to in- flashes after the pump has crease/decrease.
  • Page 91 (See page 89.) When D.MODE is selected. Set the FC.TIM (detection time) by minutes to determine upset conditions. Set the FC.PRM (priming time) by minutes. keys to in- crease/decrease. Set the FC.RTN (return time) by minutes to recover opera- tion. The time must be shorter than the priming time.

  • Page 92: Pin Number Entry

    ■ PIN number entry A PIN is required to release a keypad lock state. * The default setting is 00000. Enter PIN number. keys to increase/decrease. keys to change min/sec. 92 Operation programming...

  • Page 93: Operation History

    ■ Operation history Information such as total flow volume and total power connection time is shown. Pushing both the EXT and DISP key defaults these information except total power connection time and total operating time. Indicates total flow volume. Indicates total number of strokes.

  • Page 94: Combination With The Efs Flow Sensor (Setting)

    Combination with the EFS flow sensor (Setting) ■ Feedback control The pump automatically controls a stroke rate to meet the target flow rate, measuring an actual flow with the EFS sensor. Push the DISP key when the pump is waiting in MAN mode. Select "GPH", "L/h"...

  • Page 95: Batch Operation

    ■ Batch operation The pump runs until meeting the set volume per pulse and stops afterwards. Enter EXT mode. Push the EXT key to move from manual mode to EXT mode. * Push the start/stop key and stop the pump when it is running. Then call up EXT mode.

  • Page 96: Buffer On/Off Selection (Batch)

    ■ Buffer ON/OFF selection (Batch) For the batch operation with a buffer enabled, input the external pulse signal via the analogue/pulse input terminal or the INPUT terminal. See page 50 for detail. Select "INPUT", "INP.T" and then "PULS" in the user mode when using the INPUT terminal.

  • Page 97: Default Setting

    ■ Default setting The default flow rate at SP2 (ANA.V mode) and 20mA (Analogue output) can be changed. Press and hold the DISP key for 3 seconds in the water state (MAN mode) to enter the TEST mode. * Push the start/stop key and stop the pump when it is running. Then call up EXT mode.

  • Page 98: Out Of Measurement And Poor Flow Alarm (Out1 & 2)

    ■ Out of measurement and Poor flow alarm (OUT1 & 2) Available only with the combination of the pump and the EFS flow sensor. Allocate the out of measurement alarm (1.FL.ER or 2.FL.ER) or the poor flow alarm (1.F.CHK or 2.F.CHK) to OUT1 and 2. Out of measurement alarm Poor flow alarm...
  • Page 99 Poor flow alarm setting (when 1.F.CHK or 2.F.CHK is selected.) Available after selecting "1.F.CHK (or 2.F.CHK)". Set the alarm time (1.AL.TM) and select the pump on or off (1.ON-OF). Set the allowable minimum flow rate. Set the time to alarm a poor flow. keys to increase/decrease.

  • Page 100: Maintenance

    Maintenance This section describes troubleshooting, inspection, wear part replacement, exploded views and specifications. Important • Follow instructions in this manual for replacement of wear parts. Do not disassemble the pump beyond the extent of the instructions. • Always wear protective clothing such as an eye protection, chemical re- sistant gloves, a mask and a face shield during disassembly, assembly or maintenance work.

  • Page 101: Troubleshooting

    Troubleshooting First check the following points. If the following measures do not help remove problems, contact us or your nearest distributor. States Possible causes Solutions The pump Power voltage is too low. • Observe the allowable voltage does not range of 90-264VAC. run.

  • Page 102: Error Codes

    Error codes Error codes will be shown when this product is in a faulty condition. See below for the meanings of error codes and countermeasures. ■ Error code information Error Error message Possible causes Descriptions codes is shown in... The same current value or spm is set to both the set point 1 and 2 when Err1 Erroneous setting...

  • Page 103: Inspection

    Inspection Perform daily and periodic inspection to keep pump performance and safety. Daily inspection Check the following points. Upon sensing abnormality, stop operation immedi- ately and remove problems according to "Troubleshooting". When wear parts come to the life limit, replace them with new ones. Contact us or your nearest distributor for detail.

  • Page 104: Wear Part Replacement

    Wear part replacement To run the pump for a long period, wear parts need to be replaced periodically. It is recommended that the following parts are always stocked for immediate replacement. Contact us or your nearest distributor for detail. Precautions •...

  • Page 105: Before Replacement

    Before replacement First release pressure from the pump head. Stop the pump operation. Rotate the adjusting screw two revolutions anticlockwise to open the air vent port. NOTE Do not rotate it three revolutions or more. Otherwise, liquid may come out from the adjusting screw.
  • Page 106 Air bleed tube Loosen the fitting nut to remove a Fitting nut discharge tube and an air bleed tube. * Wash out residual liquid or substances. Discharge tube Turn the lock nut anticlockwise by Lock nut an adjustable wrench and remove Air vent body A the air vent body A.

  • Page 107: Suction Valve Set Disassembly/Assembly

    Air vent body B Place a new valve set into the pump head and screw the air vent body B through the lock nut. Lock nut * Be careful not to misarrange the valve set or place it upside down. Otherwise, leakage or flow rate reduc- tion may result.

  • Page 108: Spacer Set Replacement (Auto Degassing Type)

    Pull out the valve set by a pair of tweezers. Hand-tighten the fitting with the valve set in it into the pump head as far as it will go. Retight- en it by a further 1/4 turn with an adjustable Valve set wrench or a spanner.

  • Page 109: Air Vent Valve Set Replacement (Auto Degassing Type)

    ■ Air vent valve set replacement (Auto degassing type) Loosen the fitting nut and remove an air bleed tube. * Be careful not to get wet with a residual chemical. Loosen and remove the fitting. Take the air vent valve set out of the fitting Fitting nut adapter.
  • Page 110 Run the pump and set the stroke length to 0%. Then stop the pump. Loosen the fitting nuts and re- Fitting nut move a suction tube, a discharge Air bleed tube tube and an air bleed tube. Discharge tube Suction tube Remove the pump head with a hexagon wrench.
  • Page 111 NOTE • Fit the retainer to the diaphragm with its round Mating parts Bracket edge to the diaphragm. • Check that the bracket spacer is in place. Refit the bracket spacer into the bracket, combining mating parts as necessary. Bracket spacer Screw the diaphragm into the plunger as far as it will go.

  • Page 112: Exploded View

    Exploded view Pump head, Drive unit & Control unit The pump in the diagram below is completely dismantled. Do not dismantle the pump beyond the extent shown in this instruction manual. Automatic air vent type FC type Diaphragm spacer Valve set* Retainer Diaphragm Pump body...

  • Page 113: Pump Head

    Pump head ■ EWN VC/VH/VE/PC/PH/PE/TC Part names # of parts Pump head Fitting Fitting nut Air vent body B Lock nut Diaphragm Retainer 10 Air vent body A 11 Valve guide 12 Valve seat 13 Valve 14 Valve gasket 17 O ring 18 Diaphragm spacer *¹...

  • Page 114: Ewn Fc

    ■ EWN FC Part names # of parts Pump head Fitting Diaphragm Retainer 11 Valve guide 12 Valve seat 13 Valve 14 Valve gasket 17 O ring 18 Diaphragm spacer Hex. socket head bolt [PW•SW] * The number of diaphragm spacers varies with pump model.

  • Page 115: Ewn Sh

    ■ EWN SH Part names # of parts 1 Pump head 3 Fitting 7 Diaphragm 9 Retainer 11 Valve guide 12 Valve seat 13 Valve 14 Valve gasket B 18 Diaphragm spacer 19 Hex. socket head bolt [PW•SW] 28 Valve gasket A 37 Adjusting screw 38 Seal nut 39 Seal ring...

  • Page 116: Ewn-C31 P6-V

    ■ EWN-C31 P6-V Part names # of parts Pump head Fitting Fitting nut Diaphragm Retainer 11 Valve guide 12 Valve seat 13 Valve 14 Valve gasket 17 O ring 18 Diaphragm spacer Hex. socket head bolt [PW•SW] 28 Hose stopper 29 Hose adapter 30 O ring 51 Inlet...

  • Page 117: Ewn-B11/-B16/-C16/-C21 Vc-A/Vh-A

    ■ EWN-B11/-B16/-C16/-C21 VC-A/VH-A Part names # of parts 1 Pump head 3 Fitting 4 Fitting nut 5 Air vent body B 6 Lock nut 7 Diaphragm 9 Retainer 10 Air vent body A 11 Valve guide 12 Valve seat 13 Valve 14 Valve gasket 17 O ring 18 Diaphragm spacer...

  • Page 118: Specifications/Outer Dimensions

    Specifications/Outer dimensions Specifications Information in this section is subject to change without notice. ■ Pump unit VC/VH/VE/PC/PH/PE Discharge Flow rate Stroke length Stroke rate Power con- Current pressure Weight Model code sumption value (mℓ/min) (mm) (spm) (MPa) 145.0 EWN-B11 (38) (1.0) 101.5 EWN-B16...
  • Page 119 VC-C/VH-C/VE-C (High compression type) Discharge Flow rate Stroke length Stroke rate Power con- Current pressure Weight Model code sumption value (mℓ/min) (mm) (spm) (MPa) 145.0 EWN-B09 (12) (1.0) 145.0 EWN-B11 (23) (1.0) 50-100 (0.625-1.25) 101.5 EWN-B16 (40) (0.7) 0.1-100 (1-180) 58.0 EWN-B21 (63)
  • Page 120 * The above information is based on pumping clean water at rated voltage and ambient temperature. * Flow rates were collected at the maximum discharge pressure, 100% stroke length and 360spm (180spm for the VC-C/VH-C/VE-C, 240spm for the PC-H/PH-H/PE-H/ SH-H/P6-V). A flow rate increases as a discharge pressure decreases. * Allowable room temperature: 0-40°C * Allowable liquid temperature: -10 - 40°C (-10 - 60°C for the PC/PH/TC/FC/SH) * Allowable power voltage deviation: ±10% of the rated range...

  • Page 121: Control Unit

    ■ Control unit EXT (operation with EXT programming) Operation mode MAN (operation at manual speed) Functions Feedback control (operation with the EFS) Mode selection EXT key, START/STOP key Keypad START/STOP, EXT, UP, DOWN, DISP Batch operation Operation with the EFS and set volume per pulse n (1-9999) shots per signal (n = multiplier) Digital control n (1-9999) signals per shot (n = divisor)

  • Page 122: Power Cable

    No voltage contact (mechanical relay) 250VAC, 3A(resistance load) OUT1 Enable or disable the alarms of STOP, Pre-STOP, Inter- lock, Batch/MULT operation completion, Out of measure- ment and Poor flow No voltage contact (photoMOS) 24VAC/DC 0.1A Output Enable or disable the alarms of STOP, Pre-STOP, Inter- OUT2 lock, Batch/MULT operation completion, Out of measure- ment and Poor flow or Synchronous output (sensor/pump)

  • Page 123: Outer Dimensions

    Outer dimensions ■ EWN-B11/-B16/-B21/-C16/-C21 VC/VH/VE/PC/PH/PE (10.41”) (1.85”) LOCK (2.65”) (0.89”) 4.92” 1.57” 0.79” 0.79” 0.59” 0.59” ■ EWN-B31/-C31 VC/VH/VE/PC/PH/PE (10.51”) (1.87”) LOCK (2.65”) 4.92” (0.96”) 1.57” 0.79” 0.79” 0.59” 0.59” Specifications/Outer dimensions...

  • Page 124: Ewn-C36 Vc/Vh/Ve/Pc/Ph/Pe

    ■ EWN-C36 VC/VH/VE/PC/PH/PE (10.49”) (1.87”) LOCK (2.65”) (0.94”) 4.92” 1.57” 0.79” 0.79” 0.59” 0.59” ■ EWN-B11/-B16/-B21/-C16/-C21 FC (9.07”) (0.51”) (2.65”) 4.92” (0.89”) 1.57” 0.79” 0.79” 0.59” 0.59” 124 Specifications/Outer dimensions...

  • Page 125: Ewn-B31/-C31 Fc

    ■ EWN-B31/-C31 FC (9.27") 0.63" (2.65") (0.96") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" ■ EWN-C36 FC (9.25”) (0.63”) (2.65”) 4.92” (0.94”) 1.57” 0.79” 0.79” 0.59” 0.59” Specifications/Outer dimensions...

  • Page 126: Ewn-B11/-B16/-B21/-C16/-C21 Tc

    ■ EWN-B11/-B16/-B21/-C16/-C21 TC (10.41”) (1.85”) LOCK (2.65”) 4.92” (0.89”) 1.57” 0.79” 0.79” 0.59” 0.59” ■ EWN-B31/-C31 TC (10.51”) (1.87”) LOCK (2.65”) 4.92” (0.96”) 1.57” 0.79” 0.79” 0.59” 0.59” 126 Specifications/Outer dimensions...

  • Page 127: Ewn-C36 Tc

    ■ EWN-C36 TC (10.53”) (1.91”) LOCK (2.65”) (0.94”) 4.92” 1.57” 0.79” 0.79” 0.59” 0.59” ■ EWN-B11/-B16/-B21/-C16/-C21 SH (9.11”) (0.59”) (2.65”) (0.85”) 4.92” 1.57” 0.79” 0.79” 0.59” 0.59” Specifications/Outer dimensions...

  • Page 128: Ewn-B31/-C31 Sh

    ■ EWN-B31/-C31 SH (9.17”) (0.59”) (2.65”) (0.91”) 4.92” 1.57” 0.79” 0.79” 0.59” 0.59” ■ EWN-C36 SH (9.17”) (0.59”) (2.65”) 4.92” (0.91”) 1.57” 0.79” 0.79” 0.59” 0.59” 128 Specifications/Outer dimensions...

  • Page 129: Ewn-B11/-B16/-B21/-C16/-C21 Vc-C/Vh-C/Ve-C (High Compression Type)

    ■ EWN-B11/-B16/-B21/-C16/-C21 VC-C/VH-C/VE-C (High compression type) (10.41”) (1.85”) LOCK (2.65”) (0.89”) 4.92” 1.57” 0.79” 0.79” 0.59” 0.59” ■ EWN-B11/-C16 PC-H/PH-H/PE-H (High pressure type) (10.98”) (2.42”) LOCK (2.65”) (0.89”) 4.92” 1.57” 0.79” 0.79” 0.59” 0.59” Specifications/Outer dimensions...

  • Page 130: Ewn-B11/-C16 Sh-H (High Pressure Type)

    ■ EWN-B11/-C16 SH-H (High pressure type) (9.11”) (0.59”) (2.65”) 4.92” (0.85”) 1.57” 0.79” 0.79” 0.59” 0.59” ■ EWN-C31 P6-V (High viscosity type) (9.37”) (0.78”) (2.65”) 4.92” (0.91”) 1.57” 0.79” 0.79” 0.59” 0.59” Specifications/Outer dimensions...

  • Page 131: Ewn-B11/-B16 (Auto Degassing Type)

    ■ EWN-B11/-B16 (Auto degassing type) (10.41") (1.85") AIR(AUTO) LOCK (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" ■ EWN-C16/-C21 (Auto degassing type) (10.41") (1.85") AIR(AUTO) LOCK (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" Specifications/Outer dimensions...
  • Page 132 TEL : (47)23 38 49 00 FAX : 23 38 49 01 China IWAKI Pumps (Guangdong) Co., Ltd. TEL : (86)750 3866228 FAX : 750 3866278 Singapore IWAKI Singapore Pte. Ltd. TEL : (65)6316 2028 FAX : 6316 3221 China GFTZ IWAKI Engineering &...

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