IWAKI PUMPS EWN-R Series Instruction Manual
  1. Manuals
  2. Brands
  3. IWAKI PUMPS Manuals
  4. Water Pump
  5. EWN-R Series
  6. Instruction manual

IWAKI PUMPS EWN-R Series Instruction Manual

Electromagnetic metering pump
Hide thumbs
Table of Contents

Advertisement

Quick Links

Iwaki
Electromagnetic Metering Pump
EWN-R (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.
2009 IWAKI CO., LTD.

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the EWN-R Series and is the answer not in the manual?

Questions and answers

Related Manuals for IWAKI PUMPS EWN-R Series

Summary of Contents for IWAKI PUMPS EWN-R Series

  • Page 1 Iwaki Electromagnetic Metering Pump EWN-R (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, dis- charge capacity, discharge pressure and power voltage are as ordered.

  • Page 3: Table Of Contents

    Order confirmation ..................... 2 Warning ......................7 Caution ......................9 Precautions for use ..................13 Introduction .....................17 Pump structure & Operating principle ............17 Features .......................19 Operational functions...................19 Part names...................... 24 Pump......................24 Operational panel ..................25 Basic displays & Pump states ............... 26 Identification codes ..................
  • Page 4 Before operation .................... 42 Points to be checked ...................42 Retightening of pump head fixing bolts ............42 Use of hexagon wrench instead of a torque wrench ......43 Degassing ....................43 Flow rate adjustment .................. 46 Stroke rate adjustment ................47 Stroke length adjustment............... 49 Before a long period of stoppage (One month or more) ......
  • Page 5 Troubleshooting ..................... 83 Inspection ....................... 85 Daily inspection ..................85 Periodic inspection ..................85 Wear part replacement .................. 86 Wear part list ....................86 Before replacement ..................87 Valve set replacement .................87 Discharge valve set dismantlement/assembly ........87 Suction valve set dismantlement/assembly .......... 89 Spacer set replacement (Auto degassing type) ........
  • Page 6 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. Indicates mishandling could lead to a fatal or WARNING serious accident. Indicates mishandling could lead to personal CAUTION injury or property damage.

  • Page 7: 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 shock l’alimentation électrique peut déclencher des décharges élec-...
  • Page 8 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 9: 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 10 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 11 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 Prohibited La pompe n’est pas complètement étanche. Utiliser la pompe dans l’eau ou dans un endroit très humide peut créer une décharge élec- trique ou un court-circuit.
  • Page 12 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 13: 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 14 • 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 15 • 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 16 • 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 17: Introduction

    Introduction Pump structure & Operating principle The EWN series is a diaphragm metering pump which consists of a pump head, drive unit and control unit. A diaphragm is directly driven by electromag- netic force. Principle of operation The electromagnetic force and spring force make reciprocating motion. The reciprocating motion is transferred to a diaphragm through a plunger and then volumetric change occurs in the pump head.
  • Page 18 Auto degassing system Discharge port Air vent port Automatic air vent valve body LOCK Air vent valve Pump head valve Pump head Suction port • Once air is entrained through the suction port, the working pressure difference between the pump head valve and the air vent valve separates entrained air from liquid.

  • Page 19: Features

    Features Multivoltage operation The EWN-R series is a multivoltage type (100-240VAC) and can be selected without concern for local power voltage. High turndown ratio Digitally-controlled stroke rate range is 0.1-100%. The stroke length shifts for a fine flow adjustment. Waterproof and dustproof structure (IP65)
  • Page 20 Multiplier programming (See page 57) 1-9999 shots can be programmed to one pulse signal. *In the EXT operation, the pump runs at the manual operation stroke rate. *The pump makes one shot per pulse when the multiplier is programmed to 1. Example) When the multiplier is programmed to 5, the pump makes five shots per signal.
  • Page 21 ANA. R (analogue rigid) programming (See page 63) The pump increases/decreases a flow rate in proportion to 0-20mA. Four (4- 20, 20-4, 0-20, 20-0) programs are provided. In "4-20" or "20-4" program a disconnection sensor works to stop the pump as a current value falls below 4mA ("DISCN"...
  • Page 22 STOP function (See page 66) The start/stop of the pump can be controlled by the external signal. When "NOR. OP" is selected... The pump stops while receiving the external signal via the STOP terminal. *The pump resumes operation when the STOP signal is released. STOP signal input Pump operation Stop...
  • Page 23 AUX function (See page 43) The pump runs at the maximum stroke rate while receiving the external sig- nal via the AUX terminal. Use this function for degassing. Pulse signal input Pump operation 1 2 3 4 5 1 2 3 Priming function (See page 43) The pump runs at the maximum stroke rate while both the UP and DOWN keys are pressed.

  • Page 24: Part Names

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

  • Page 25: Operational Panel

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

  • Page 26: Basic Displays & Pump States

    Basic displays & Pump states STOP LED ON LED lights ON LED lights ON LED blinks lights red orange green green Manual wait The pump state. Display is running in shows stroke manual mode. rate in %. Display shows stroke rate in %. EXT(Multiply) EXT(Multiply) mode.
  • Page 27 STOP LED ON LED lights ON LED lights ON LED blinks lights red orange green green EXT(Multiply) programming MULT mode. The pump is set to make the displayed # of shots per signal. EXT(Divide) programming mode. The pump is set to make one shot for the displayed # of...

  • Page 28: 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 29 e. Tube connection bore Hose size (ID×OD) Wet end materials Pump models VC/VH/VE/PC/PH/PE/TC/VC/ ø1/4"×ø3/8" EWN-09/-11/-16 & -21 VH/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/SH-H2 EWN-11/-16/-21/-31 & -36 code* IN/AIR: 1/4"×ø3/8" PC/PE-H/PE-H2 EWN-11 & -16 OUT: 1/4-18NPT IN: ø15×ø22 P6-V EWN-31 OUT: ø3/8"×ø1/2"...

  • Page 30: Pump Mounting

    Observe the following points when installing the pump. • Be sure to turn off power to stop the pump and related devices before work. • Upon sensing abnormality or danger, stop work immediately. Remove problems before resuming work. • Do not place dangerous or flammable goods near the pump for your safety. •...

  • Page 31: 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 a. Pass a tube into the fitting nut and Tube hose stopper and then slide it down to Fitting nut...
  • Page 32 Connect an air bleed tube into the Air vent port air vent port. Route back the other tube end to a supply tank or a container. For the auto degassing type, con- Tube nect another air bleed tube into the automatic air vent valve body as well.

  • Page 33: Check Valve Mounting

    Check valve mounting Install an optional check valve to the EWN (or a back pressure valve to the FC type) for the prevention of a back flow, siphon and overfeeding. In the following cases be sure to install the check valve. •...
  • Page 34 Mount a check valve at the discharge tube end. *The CAN/CBN check valve and the BVC back pressure valve have 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 BVC back pressure valve R1/2...

  • Page 35: Wiring

    Wiring Wiring for a power voltage and an external signal. Observe the following points during wiring work. • Electrical work should be performed by a qualified operator. Always ob- serve applicable codes or regulations. • Observe the rated voltage range, or the electrical circuit in the control unit may fail.
  • Page 36 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 37: 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 38 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 39: Connections

    Connections • Level sensor The EWN have two stage level sensor, the Pre-STOP and STOP alarms. Con- nect the pre-alarm signal to the Pre-STOP and the alarm signal to the STOP. The pre-alarm functions just to notify a low liquid level by flashing the LED orange while the pump is running.
  • Page 40 • Pulse signal In the EXT (MULT or DIV) mode, the pump runs along with a multiplier or a divisor as receiving the pulse signal. • When using an open collector... Pay attention to polarity. Pulse is plus(+), and COM1 is minus(-). (Maximum 2.3mA at 12V) •...
  • Page 41 • OUTPUT signal The pump sends out the OUTPUT signal along with injections or the STOP signal along with the external STOP signal input via a Photo MOS relay. *The maximum applied voltage is 24VAC/DC. 1 : Free 2 : Free 3 : Free 4 : OUT 5 : COM...

  • Page 42: Before Operation

    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... • Liquid level in a supply tank is enough. • Tubing is securely connected and is free from leakage and clogging. •...

  • Page 43: 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 44 Points to be checked Air bleed tube • An air bleed tube is connected to the air vent port. • For the auto degassing type, another air bleed tube is connected to the automatic air vent body. Turn on power. The ON LED lights and a display related to the current mode appears on the screen.
  • Page 45 Run the pump at the maximum stroke rate. Select a convenient way from the following. • Set a stroke rate to 100% and run the pump manually. STOP STOP • Enter the external signal via the AUX terminals. AUX signal STOP STOP input...

  • Page 46: 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 %. 100% stroke rate means the maximum flow rate. Stroke rate adjustment is a main way to adjust a flow rate. Stroke length is the moving distance of the plunger.

  • Page 47: Stroke Rate Adjustment

    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 48 Turn on power and call up manual mode. Enter manual mode to indicate stroke rate on the screen. • Push the start/stop key when "MULT", "DIV", "ANA.R" or "ANA.V" is on the screen. STOP • When "STOP" or "-STOP" appears on the screen, see "STOP function cancellation"...

  • Page 49: Stroke Length Adjustment

    Stroke length adjustment A stroke length can be adjusted when the moving distance of the plunger is changed by the stroke length adjusting 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 as below. Fixed stroke rate Stroke length adjustment *The flow rate described on the nameplate is at 100%.

  • Page 50: 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 51: 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 Default setting Setting range Step Stroke rate* 100.0% 0.1-100.0% 0.1* Multiply/Divide/Analogue ANA-V, ANA-R, /NNNN, selection XNNNN Divisor...

  • Page 52: Programming Flow

    Programming flow Power ON Calibration mode Manual mode 3 sec. Stroke rate setting EXT mode Manual operation Save Cancel MULT ANA. V Prime mode 1 sec. Flow rate display ANA.R ANA-V ANA-R programming routine programming routine Keypad lock ANA. V ANA.R Disp ANA.
  • Page 53 3 sec. User mode EXT mode programming EXT mode selection MULT See ANA-V programming routine See ANA-R programming routine 2 LOCK Operation programming...

  • Page 54: Manual Operation

    Manual operation Turn on power. The LED lights and a display related to the cur- rent mode appears on the screen. *The pump waits in the manual mode when turning STOP on power with a default setting or calls up a previ- ous mode at the last shutoff.

  • Page 55: Ext Operation

    Push the start/stop key. The pump starts to run. • The LED blinks at each shot. STOP STOP EXT operation The pump operation is controlled by the external (pulse) signal. EXT mode Set the upper limit spm and enter EXT mode. Note that the pump starts to run in sync with the external signal as entering EXT mode.

  • Page 56: Ext Mode Programming

    Use the UP or DOWN key to program the upper limit. Push the start/stop key and stop the pump when it is running. Then program stroke rate. • A stroke rate increases/decreases as pushing the UP/DOWN keys. • Press and hold either key for three seconds for quick change. Quick change stops at 0.1 or 100%.
  • Page 57 Multiplier programming Program the number of shots per signal to control the pump. The number of shots can be programmed from 1 to 9999. NOTE Do not enter the external signal during programming. 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.
  • Page 58 Push the EXT key and call up the multiplier programming screen. MULT STOP STOP Disp SET Use the UP or DOWN key to program a multiplier. • A multiplier increases/decreases as pushing the UP/DOWN keys. • Press and hold either key for three seconds for quick change. Quick change stops at 1 or 9999.
  • Page 59 Divisor programming Program the number of signals per shot to control the pump. The number of signals can be programmed from 1 to 9999. NOTE • If a divisor is programmed to 1 so as to make one shot per pulse and the input interval of the external signal is close to a manual operation stroke rate (but not exactly in synchronization), irregular operation may occur.
  • Page 60 Push the EXT key and call up the multiplier programming screen. STOP STOP Use the UP or DOWN key to program a divisor. • A divisor increases/decreases as pushing the UP/DOWN keys. • Press and hold either key for more than three seconds for quick change.
  • Page 61 ANA-V programming Select "ANA-V" or "ANA-R" in USER mode. See page 72. 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 62 Push the DISP key and enter a stroke rate at P1. • A stroke rate increases/decreases as pushing the UP/DOWN keys. • Press and hold either key for three seconds for quick change. Quick change stops at 0 or 100%. 0 or 100% skips to 100 or 0% when the key is released and pushed again.
  • Page 63 Push the start/stop key to return to EXT mode. The pump starts to run in proportional control according to the ANA-V programming. ANA. V STOP STOP ANA-R programming Select "ANA-V" or "ANA-R" in USER mode. See page 72. Enter EXT mode. Push the EXT key to move from manual mode to EXT mode.
  • Page 64 Push the EXT key and select a preset program. ANA.R STOP STOP Scroll through the ANA-R programming routine by the UP and DOWN keys. Push the EXT key to return to the EXT mode selection. ANA.R STOP STOP Push the start/stop key to enter EXT mode. ANA.R STOP STOP...

  • Page 65: User Mode

    User mode The following features can be programmed. Get access to User mode via the wait state in the manual mode. • STOP function The pump stops running while receiving the external signal via the STOP terminal. • Pre-STOP function The STOP LED lights orange while the pump receiving the external signal via the Pre-STOP terminal.

  • Page 66: Stop/Pre-Stop Function

    STOP/Pre-STOP function The start/stop of the pump operation can be controlled by the external stop signal. • When "NOR. OP" is selected... The pump stops while receiving the stop signal. • When "NOR. CL" is selected... The pump runs while receiving the stop signal. STOP/Pre-STOP function programming Return to the wait state in the manual mode.
  • Page 67 Select "STOP" or "P-STP". Scroll through the User mode selection by the UP and DOWN keys. Push the EXT key. STOP STOP Select "NOR. OP" or "NOR. CL". Push the start/stop key to return to manual mode. STOP STOP The screen indicates that the STOP function is active. Operation programming...

  • Page 68: Stop/Pre-Stop Function Cancellation

    STOP/Pre-STOP function cancellation A stop state can be cancelled if the current selection is changed. Example) NOR.OP NOR.CL NOR.CL NOR.OP Call up "-STOP" screen. If the screen shows "STOP" in the manual or EXT mode, push the start/ stop key. STOP Press and hold the EXT key for three seconds to enter User mode.
  • Page 69 Push the EXT key and change the current selection. If "NOR.OP" is selected change it to "NOR.CL", and vice versa. STOP Push the start/stop key to return to manual mode. STOP STOP The STOP or Pre-STOP function now has been cancelled. Operation programming...

  • Page 70: Output Function

    OUTPUT function • When "OUT" "SPM" is selected... The pump sends the OUTPUT signal at each shot while running. • When "OUT" "STOP" is selected... a. The pump sends the OUTPUT signal while receiving the STOP signal (with the setting of operation stop at STOP signal input). b.
  • Page 71 Push the EXT key. STOP STOP Select "STOP" or "SPM". Push the start/stop key to return to manual mode. STOP STOP The programming has now been reflected to the pump operation. Operation programming...

  • Page 72: Ana-V/-R Selection

    ANA-V/-R selection • 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. NOTE A default setting is "ANA-R". Return to the wait state in the manual mode. Push the start/stop key to return to the manual wait state if the pump is running in manual mode or in EXT mode.
  • Page 73 Push the EXT key. STOP STOP Select "ANA-R" or "ANA-V". Push the start/stop key to return to manual mode. STOP STOP The programming has now been reflected to the pump operation. Operation programming...

  • Page 74: Buffer On/Off Selection

    Buffer ON/OFF selection • When "bM-ON" is selected... Excessive external signals that are not reflected to the MULT or DIV opera- tion can be stored. • When "bM-OF" is selected... Excessive external signals are not stored. NOTE A default setting is "bM-OF". Return to the wait state in the manual mode.
  • Page 75 Push the EXT key. STOP STOP Select "bM-ON" or "bM-OF". Push the start/stop key to return to manual mode. STOP STOP The programming has now been reflected to the pump operation. *The pump can run up to 65535 shots by the stored excessive signals. Operation programming...

  • Page 76: Pin Number Entry

    PIN number entry A PIN is required to release a keypad lock state. NOTE A default setting is "bM-OF". Return to the wait state in the manual mode. Push the start/stop key to return to the manual wait state if the pump is running in manual mode or in EXT mode.
  • Page 77 Push the EXT key. STOP 2 LOCK STOP Use the UP and DOWN keys to create PIN number. 2 LOCK 2 LOCK Shift to the next digit by pushing the DISP key. *A default PIN number is "00000". Push the start/stop key to return to manual mode. STOP 2 LOCK STOP...

  • Page 78: Keypad Lock

    Keypad lock Keypad lock can be active in the following states for the prevention of errone- ous key operation. Manual mode Wait state During operation STOP STOP EXT mode MULT STOP STOP ANA-R ANA- V STOP STOP NOTE • Any key operation is not acceptable when the keypad lock is active. In an emergency, unplug the pump or enter the external signal via the STOP terminal to stop operation.

  • Page 79: Keypad Lock Activation

    Keypad lock activation Press and hold the start/stop key for more than three seconds. STOP STOP LOCK "LOCK" indication appears on the screen. Keypad lock release Push the EXT key once. Enter the PIN number. STOP LOCK STOP LOCK Shift to the next digit by pushing the DISP key. *A default PIN number is "00000".

  • Page 80: Calibration Mode

    Calibration mode Entering a flow rate per shot, operation can be monitored in GPH, L/h or mL/m. Run the pump in an actual operating condition and measure the flow for one minute. Return to the wait state in the manual mode. Push the start/stop key to return to the manual wait state if the pump is running in manual mode or in EXT mode.

  • Page 81: Unit Change

    Enter the measured flow. Shift to the next digit by pushing the DISP key. *Pushing the EXT key, the programming is cancelled. Push the start stop key to return to the wait state. The programming is stored as "SAVE" indication appears on the screen. The maximum flow can be checked at each unit.
  • Page 82 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 83: 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 84 States Possible causes Solutions Liquid leaks. Loose fit of the fitting or the air vent • Retighten them. body Loose fit of the pump head • Retighten the pump head. See page 42. O rings or valve gaskets are not •...

  • Page 85: 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 86: 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 87: 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 88 Loosen the fitting nut to remove a dis- Fitting nut charge tube and an air bleed tube. Air bleed tube Discharge tube Turn the lock nut anticlockwise by an adjustable wrench and remove Air vent body A Lock nut the air vent body A. Remove the air vent body B by the 0.9 inch (21mm) box wrench.

  • Page 89: Suction Valve Set Dismantlement/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 90: 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 91: 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 92 Run the pump and set the stroke length to 0%. Then stop the pump. Loosen the fitting nuts and re- Fitting nut Air bleed tube move a suction tube, a discharge tube and an air bleed tube. For the auto degassing type, dis- connect another air bleed tube from Discharge tube the automatic air vent valve body as...
  • Page 93 NOTE • Fit the retainer to the diaphragm with its round edge Bracket Mating parts to the diaphragm. • Check that the bracket spacer is in place. Refit the bracket spacer into the bracket, combining mating parts as necessary. • The B/C-31 & -36 types do not have a bracket spacer.

  • Page 94: 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. Air vent Automatic air vent type FC type Diaphragm spacer Valve set*...

  • Page 95: Pump Head

    Pump head EWN-[B09•B11•B16•B21•C16•C21][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 Hex.

  • Page 96: Ewn-[B31•C31•C36][Vc•Vh•Ve•Pc•Ph•Pe•Tc]

    EWN-[B31•C31•C36][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 Hex.

  • Page 97: 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 Gasket 18 Diaphragm spacer Hex. socket head bolt [PW•SW] *The number of diaphragm spacers varies with pump model. Exploded view...

  • Page 98: 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 Hex. socket head bolt [PW•SW] 28 Hose stopper 29 Fitting spacer 30 O ring 51 Inlet 52 Valve spring *The number of diaphragm spacers...

  • Page 99: Ewn Sh/Sh-H/Sh-H2

    EWN SH/SH-H/SH-H2 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 100: Ewn With An Automatic Air Vent

    EWN with an Automatic air vent Part names # of parts 1 Pump head 2 Bracket 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...

  • Page 101: 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 (m /min) (mm) (spm) (MPa) 145.0 EWN-B11 (38) (0.1) 101.5 EWN-B16...
  • Page 102 VC•VH•VE•PC•PH•PE (High compression type) Discharge Flow rate Stroke length Stroke rate Power con- Current pressure Weight Model code sumption value (m /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...

  • Page 103: Power Cable

    *These specifications were collected at the time of our shipping inspection and based on pumping clean water at ambient temperature and rated voltage. *Flow rates were collected at the maximum discharge pressure, 100% stroke length and 100% stroke rate. A flow rate increases as a discharge pressure decreases. *Allowable room temperature: 0-40°C *Allowable liquid temperature: 0-40°C (0-60°C for the PC•PH•FC) *Allowable power voltage deviation: ±10% of the rated range...

  • Page 104: Outer Dimensions

    Outer dimensions EWN-[B11•B16•B21] [VC•VH•VE] [U•U2]R (10.41") (1.85") LOCK (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" EWN-B31 [VC•VH•VE] [U•U2]R (10.51") (1.87") LOCK (2.65") (4.92") (0.96") 1.57" 0.79" 0.79" 0.59" 0.59" 104 Specifications/Outer dimensions...
  • Page 105 EWN-[C16•C21] [VC•VH•VE] [U•U2]R (10.41") (1.85") LOCK (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" EWN-C31 [VC•VH•VE] [U•U2]R (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 106 EWN-C36 [VC•VH•VE] [U•U2]R (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] [PC•PH•PE] [U•U2]R (10.41") (1.85") LOCK (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" 106 Specifications/Outer dimensions...
  • Page 107 EWN-B31 [PC•PH•PE] [U•U2]R (10.51") (1.87") LOCK (2.65") (4.92") (0.96") 1.57" 0.79" 0.79" 0.59" 0.59" EWN-[C16•C21] [PC•PH•PE] [U•U2]R (10.41") (1.85") LOCK (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" Specifications/Outer dimensions...
  • Page 108 EWN-C31 [PC•PH•PE] [U•U2]R (10.51") (1.87") LOCK (2.65") (4.92") (0.96") 1.57" 0.79" 0.79" 0.59" 0.59" EWN-C36 [PC•PH•PE] [U•U2]R (10.49") (1.87") LOCK (2.65") (0.94") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" 108 Specifications/Outer dimensions...
  • Page 109 EWN-[B11•B16•B21] FC [U•U2]R (9.07") (0.51") (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" EWN-B31 FC [U•U2]R Specifications/Outer dimensions...
  • Page 110 EWN-[C16•C21] FC [U•U2]R (9.07") (0.51") (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" EWN-C31 FC [U•U2]R (9.27") 0.63" (2.65") (0.96") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" 110 Specifications/Outer dimensions...
  • Page 111 EWN-C36 FC [U•U2]R (9.25") 0.63" (2.65") 4.92" (0.94") 1.57" 0.79"0.79" 0.59" 0.59" EWN-[B11•B16•B21] TC [U•U2]R (10.41") (1.85") LOCK (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" Specifications/Outer dimensions...
  • Page 112 EWN-B31 TC [U•U2]R (10.51") (1.87") LOCK (2.65") (0.96") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" EWN-[C16•C21] TC [U•U2]R (10.41") (1.85") LOCK (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" 112 Specifications/Outer dimensions...
  • Page 113 EWN-C31 TC [U•U2]R (10.51") (1.87") LOCK (2.65") (0.96") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" EWN-C36 TC [U•U2]R (10.53") (1.91") LOCK (2.65") (0.94") 4.92" 1.57" 0.79"0.79" 0.59" 0.59" Specifications/Outer dimensions...
  • Page 114 EWN-[B11•B16•B21] SH [U•U2]R (9.11") (0.59") Ø4 (0.85") (2.65") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" EWN-B31 SH [U•U2]R (9.17") 0.59" Ø4 (2.65") (0.91") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" 114 Specifications/Outer dimensions...
  • Page 115 EWN-[C16•C21] SH [U•U2]R (9.11") (0.59") Ø4 (0.85") (2.65") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" EWN-C31 SH [U•U2]R (9.17") 0.59" Ø4 (2.65") (0.91") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" Specifications/Outer dimensions...
  • Page 116 EWN-C36 SH [U•U2]R (9.17") 0.59" Ø4 (2.65") (0.91") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" EWN-[B09•B11•B16•B21] [VC•VH•VE] [U•U2]RC (High compression type) (10.41") (1.85") LOCK (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" 116 Specifications/Outer dimensions...
  • Page 117 EWN-[C16•C21] [VC•VH•VE] [U•U2]RC (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 [PC•PH] [U•U2]RH (High pressure type/High pressure type (2MPa)) (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 118 EWN-C16 [PC•PH] [U•U2]RH (High pressure type) (10.98") (2.42") LOCK (2.65") 4.92" (0.89") 1.57" 0.79" 0.79" 0.59" 0.59" EWN-B11 SH [U•U2]RH (High pressure type/High pressure type (2MPa)) (9.11") (0.59") Ø4 (2.65") (0.85") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" 118 Specifications/Outer dimensions...
  • Page 119 EWN-C16 SH [U•U2]RH (High pressure type) (9.11") (0.59") Ø4 (2.65") (0.85") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" EWN-C31 [P6] [U•U2]RV (High viscosity type) (9.37") (0.78") (2.65") (0.91") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" Specifications/Outer dimensions...
  • Page 120 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") LOCK (2.65") (0.89") 4.92" 1.57" 0.79" 0.79" 0.59" 0.59" Specifications/Outer dimensions...
  • Page 121 Specifications/Outer dimensions...
  • Page 124 TEL : (47)23 38 49 00 FAX : 23 38 49 01 China IWAKI Pumps (Guandong) 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 &...

This manual is also suitable for:

Ewn-b09 r seriesEwn-b11 r seriesEwn-b16 r seriesEwn-b21 r seriesEwn-b19 r seriesEwn-b31 r series ... Show all

Table of Contents