Walchem EWN Operating Manual

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Page 1

Iwaki Electromagnetic Metering Pump

EWN-R (North America)

Safety instructions

Overview Installation Operation Maintenance Speciﬁcation

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.

Page 2

Order conﬁrmation

Open the package and check that the product conforms to your order. If any problem or inconsistency is found, immediately contact your distributor.

a. Check if the delivery is correct.

Check the nameplate to see if the information such as model codes, discharge capacity, discharge pressure and power voltage are as ordered.

b. Check if the delivery is damaged or deformed.

Check for transit damage and loose bolts.

Order conﬁrmation

Page 3

Contents

Order conﬁrmation .............................................................................................2

Safety instructions .......................................................................6

Warning ............................................................................................................. 7

Caution .............................................................................................................. 9

Precautions for use ........................................................................................13

Overview ......................................................................................17

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 ....................................................................................... 28

Pump/Drive units ........................................................................................ 28

Installation ..................................................................................30

Pump mounting .............................................................................................. 30

Pipework ..........................................................................................................31

Tube connection ..........................................................................................31

Check valve mounting ................................................................................ 33

Wiring .............................................................................................................. 35

Power voltage/Earthing ..............................................................................35

Signal wire connection.................................................................................37

Connections .......................................................................................... 39

Contents

Page 4

Operation .....................................................................................42

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) ............................. 50

Operation programming ................................................................................51

Programming ﬂow ........................................................................................52

Manual operation ........................................................................................54

EXT operation ............................................................................................. 55

EXT mode ............................................................................................. 55

EXT mode programming ....................................................................... 56

User mode .................................................................................................. 65

STOP/Pre-STOP function ..................................................................... 66

STOP/Pre-STOP function cancellation .................................................68

OUTPUT function ...................................................................................70

ANA-V/-R selection ................................................................................72

Buffer ON/OFF selection ........................................................................74

PIN number entry ...................................................................................76

Keypad lock .................................................................................................78

Keypad lock activation ............................................................................79

Keypad lock release ...............................................................................79

Calibration mode ........................................................................................ 80

Unit change ..................................................................................................81

spm indication ..............................................................................................81

Contents

Page 5

Maintenance ................................................................................82

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) .................................... 90

Air vent valve set replacement (Auto degassing type) ...........................91

Diaphragm replacement ..............................................................................91

Exploded view ................................................................................................ 94

Pump head, Drive unit & Control unit .........................................................94

Pump head ................................................................................................. 95

EWN-[B09•B11•B16•B21•C16•C21] [VC•VH•VE•PC•PH•PE•TC] .........95

EWN-[B31•C31•C36] [VC•VH•VE•PC•PH•PE•TC] ...............................96

EWN FC .................................................................................................97

EWN-C31 P6-V .....................................................................................98

EWN SH/SH-H/SH-H2 ..........................................................................99

EWN with an Automatic air vent ..........................................................100

Speciﬁcations/ Outer dimensions ..............................................................101

Speciﬁcations ............................................................................................101

Pump unit .............................................................................................101

Power cable ..........................................................................................103

Pump colour .........................................................................................103

Outer dimensions...................................................................................... 104

Contents

Page 6

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.

WARNING

CAUTION

Indicates mishandling could lead to a fatal or

serious accident.

Indicates mishandling could lead to personal

injury or property damage.

A symbol accompanies each precaution, suggesting the use of "Caution", "Prohibited actions" or speciﬁc "Requirements".

Caution marks Prohibited mark Requirement mark

Caution

Electrical

shock

Prohibited

Do not rework

or alter

Requiremen

Wear

protection

Grounding

Export restrictions

Technical information contained in this instruction manual might be treated as controlled technology in your countries, due to agreements in international regime for export control. Please be reminded that export license/permission could be required when this manual is provided, due to export control regulations of your country.

Safety instructions

Page 7

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 l’alimentation électrique peut déclencher des décharges électriques. Avant d’entreprendre n’importe quel type d’intervention, veillez à mettre la pompe et tout dispositif connexe hors tension à l’aide de l’interrupteur prévu à cet effet.

Stop operation

If you notice any abnormal or dangerous conditions, suspend operation immediately and inspect/solve problems.

Electrical

shock

Safety instru ctions

Arrêter le fonctionnement

Si vous détectez une anomalie ou des signes suspects et inhabituels pendant le fonctionnement, interrompez immédiatement les opérations et inspectez, résolvez les problèmes.

Do not use the pump in any condition other than its intended purpose

The use of the pump in any conditions other than those clearly speciﬁed may result in failure or injury. Use this product in speciﬁed conditions only.

Se conformer uniquement aux applications prévues

La pompe doit être utilisée conformément à l’usage pour lequel elle a été prévue et dans le respect de ses caractéristiques techniques. Toute utilisation non conforme peut entraîner un incident ou endommager le dispositif.

Do not modify the pump

Alterations to the pump carries a high degree of risk. It is not the manufacturer's responsibility for any failure or injury resulting from alterations to the pump.

Ne pas modiﬁer la pompe

Ne jamais modiﬁer une pompe sous peine de causer un incident grave. Iwaki ne pourra en aucun cas être tenu responsable d’un incident ou de dégâts survenus à la suite d’une modiﬁcation du dispositif.

Requirement

Prohibited

Do not rework

or alter

WARNING

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 , assembly 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

T oujours porter un équipement de prot ection (lunettes, gants résistants aux produits chimiques, masque, casque) durant le démontage, l’assemblage et la maint enance. Le travail effectué dictera le degré de protection. Référez-vous au MSDS de la solution proposée par le fournisseur.

Do not damage the power cable

Do not pull, knot, or crush the power cable. Damage to the power cable could lead to a ﬁre or electrical shock if cut or broken.

Ne pas endommager le câble électrique

Ne pas tirer ou faire un nœud avec le câble électrique. Endommager un câble électrique pout provoquer une incendie ou une décharge électrique.

Wear

protection

Prohibited

Do not operate the pump in a ﬂammable atmosphere

Do not place explosive or ﬂammable material near the pump.

Ne pas utiliser la pompe dans une atmosphère explosive

Pour votre sécurité, du matériel dangereux ou inﬂammable ne doit pas être placé près de la pompe.

Risk of electric shock

This pump is supplied with a grounding conductor and groundingtype attachment plug. To reduce the risk of electric shock, be certain that it is connected only to a properly grounded, grounding type receptacle.

Risque de choc électrique

La pompe est fournie avec un conducteur pour mise à la terre et une prise courant. Aﬁn de réduire le risque de choc électrique, veillez à ce que la terre soit correctement raccordée.

WARNING

Prohibited

Page 9

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 product should not take part in the operation or maintenance of the pump.

Opérateur qualiﬁé uniquement

La pompe doit être manipulée ou utilisée par du personnel qualiﬁé connaissant parfaitement la pompe. Tout autre personne étrangère ne doit pas prendre part à l’utilisation ou à la maintenance de la pompe.

Use speciﬁed power only

Do not apply power other than that speciﬁed on the nameplate. Otherwise, failure or ﬁre may result. Ensure the pump is properly grounded.

Utilisez une tension appropriée uniquement

Ne pas appliquer une autre tension que celle spéciﬁée sur la plaque signalétique sinon, il peut en résulter une panne ou une incendie. Assurez-vous également de la mise à la terre de la pompe.

Safety instru ctions

Requirement

Prohibited

Do not run pump dry

Do not run pump dry for more than 30 minutes (even when the pump runs for degassing). Otherwise, the pump head ﬁxing screws may loosen and liquid may leak. Optimise your system. If the pump runs dry for a long period (for more than 30 minutes), the pump head and the valve cases may deform by friction heat and consequently leakage results.

Ne faite pas fonctionner la pompe à sec

Ne faite pas fonctionner la pompe à sec plus de 30 minutes (même lorsque la pompe fonctionne pour dégazer). Sinon, les visses de ﬁxation de la tête peuvent se dévisser et il peut y avoir une fuite de liquide. Optimalisez l’installation de façon à ce que la pompe ne fonctionne pas à sec. Si la pompe fonctionne à sec pour une longue période (plus de 30 minutes), la tête de la pompe et le guide de clapets peuvent être déformés par friction causée par la chaleur et il en résulterait des fuites.

CAUTION

Caution

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 dans un endroit sec.

Observe an applicable MSDS

Take account of installation environment. Chemicals should be controlled in accordance with a MSDS. Do not send potable water or circulate heated water with this pump.

Prohibited

Observez un « MSDS » applicable

Tenez compte de l’environnement. Les produits chimiques doivent être surveillés en accord avec un MSDS. Ne pas utilisez cette pompe avec de l'eau potable ou de l'eau chaude.

Do not install or store the pump:

• In a ﬂammable atmosphere.

• In a dusty/humid environment.

• Where ambient temperature can exceed 0-40ºC.

• In direct sunlight or wind & rain.

N’installez ou ne stock ez pas la pom pe dans les en droits suiv antes :

• Dans une atmosphère inﬂammable

• Dans un endroit poussiéreux ou humide.

• Dans une place où la température n’est pas comprise entre 0 et 40 °C.

• Directement sous le soleil, le vent ou la pluie.

Spill precautions

Ensure protection and containment of solution in the event of plumbing or pump damage (secondary containment).

Caution

Prohibited

Déversement accidentel

Prenez des mesures protectrices contre tout incident résultant d’un débit trop important de la pompe ou d’une casse de tuyauterie.

CAUTION

Requirement

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.

Safety instru ctions

N’utilisez pas la pompe sous l’eau

La pompe n’est pas complètement étanche. Utiliser la pompe dans l’eau ou dans un endroit très humide peut créer une décharge électrique ou un court-circuit.

Grounding

Risk of electrical shock! Always properly ground the pump. Conform to local electric codes.

Mise à la terre

Veillez à ne pas faire fonctionner la pompe sans avoir au préalable prévu une mise à la terre. Celle-ci permettra d’éviter d’éventuelles décharges électriques. Vériﬁez que le câble de mise à la terre est bien branché.

Install a GFCI (earth leakage breaker)

An electrical failure of the pump may adversely affect other devices on the same line. Purchase and install a GFCI (earth leakage breaker) separately.

Détecteur de fuites à la terre

Un problème électrique peut affecter défavorablement le dispositif. Achetez et installez un détecteur de fuites à la terre.

Prohibited

Grounding

Electrical

shock

Preventative maintenance

Follow instructions in this manual for replacement of wear parts. Do not disassemble the pump beyond the extent of the instructions.

Remplacement des pièces usées

Suivez les instructions de ce manuel pour remplacer les pièces usées. Ne démontez pas la pompe au-delà des instructions.

Do not use a damaged pump

Use of a damaged pump could lead to an electric shock or death.

N’utilisez pas une pompe endommagée

Utiliser une pompe endommagée peut provoquer une décharge électrique ou la mort.

CAUTION

Requirement

Prohibited

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

Elle doit se faire en conformité avec les règles locales en vigueur (consultez une entreprise certiﬁée et spécialisée).

Check pump head bolts

Liquid may leak if any of the pump head bolts become loose. Tighten the bolts evenly to the following torque in diagonal order before initial operation and at regular intervals.

Tightening torque

EWN-B11/-B16/-B21/-C16/-C21 : 19 lb-in EWN-B31/-C31/-C36 : 22.6 lb-in

Serrez la tête de pompe

La pompe peut fuiter si les boulons sont desserrés. Resserrez les boulons diagonalement et uniformément avant la première utilisation Resserrez les boulons régulièrement pour éviter tout fuite.

Couple de serrage EWN-B11/-B16/-B21/-C16/-C21 : 19 lb-in EWN-B31/-C31/-C36 : 22.6 lb-in

Solution compatibility

This pump has been evaluated for use with water only. The suitability of this pump for use with liquids other than water, such as acid and alkaline, is the responsibility of the user. For liquids other than water, select the best-suited liquid end material combination using a chemical compatibility chart.

Requirement

Caution

Compatibilité avec la solution

Cette pompe a été évaluée pour l’utilisation avec l’eau uniquement. L’aptitude de cette pompe à être utilisée avec d’autres produits, tels que les acides et les alcalins, est de la responsabilité de l’utilisateur. Pour des liquides autres que l’eau, choisissez le matériel le plus compatible selon la résistance chimique.

CAUTION

Caution

Page 13

Precautions for use

• Electrical work should be performed by a qualiﬁed electrician. Otherwise, personal injury or property damage could result.

Safety instru ctions

Le raccordement électrique de la pompe doit être effectué par du personnel qualiﬁé sinon, il pourrait y avoir un dommage corporel ou incorporel.

• Do not install the pump:

–In a ﬂammable atmosphere. –In a dusty/humid place. –In direct sunlight or wind & rain.

– Where ambient temperature can exceed 0-40ºC. Protect the pump with a cover when installing it out of doors.

Ne pas installer la pompe dans les endroits suivants: –Dans une atmosphère inﬂammable –Dans une atmosphère poussiéreuse ou humide. – Sous les rayonnements du soleil, dans le vent ou sous la pluie. – La température ambiante doit être comprise entre 0 et 40°C. Protégez la pompe par un capot si vous l’installez dehors.

Caution

• Select a level location, free from vibration, that won't hold liquid. Anchor the pump with four M5 bolts so it doesn't vibrate. If the pump is not installed level, output may be affected.

Choisissez un endroit où il n’y a pas de vibrations et où le liquide peut s’évacuer. Fixez la pompe à l’aide de visses M5 de façon à ne pas avoir de vibrations. Si la pompe est inclinée, le débit peut être réduit.

Precautions for use

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 interagissent et les vibrations peuvent devenir importantes, ce qui engendre des performances médiocres ou des ratures. Choisissez un endroit solide et ﬁxez les boulons correctement pour évitez les vibrations pendant le fonctionnement.

• A llow sufficient spac e around the pump for easy access and maintenance.

Prévoyez de l’espace autour de la pompe pour faciliter l'accès et la maintenance.

• Install the pump as close to the supply tank as possible. Installez la pompe le plus près possible du tank de produit.

• When handling liquids that generate gas bubbles (sodium hypochlorite or hydrazine solution), install the pump in a cool and dark place. Flooded suction installation is strongly recommended.

Caution

Installez la pompe dans une place froide à l’abri du soleil lorsqu’il s’agit du dosage de produits dégazant tels que l’hypochlorite de sodium ou l’hydrazine. Mettre la pompe en charge est vivement recommandé.

Precautions for use

Caution

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. Ne pas utiliser une pompe endommagée sinon il pourrait y avoir un courant de fuite ou une décharge électrique.

• The pump has a rating of IP65, but is not waterproof. Do not operate the pump while wet with solution or water. Failure or injury may result. Immediately dry off the pump if it gets wet.

Safety instru ctions

Le pompe est IP65 mais n’est pas complètement étanche. Ne pas laisser la pompe couverte de liquide pompé ou sous la pluie. Il pourrait y avoir des ratés ou préjudices. Si la pompe a été mouillée, sechez-la directement.

• Do not close discharge line during operation. Solution may leak or piping may break. Install a relief valve to ensure safety and prevent damaged plumbing.

Ne fermez pas la ligne de refoulement lorsque la pompe est en fonctionnement sinon il pourrait y avoir des fuites de liquide ou la tuyauterie pourrait céder. Installez une soupape de sécurité pour des raisons de sécurité et pour éviter tout dommage de la tuyauterie.

• Do not remove the control unit. Note that an applicable control unit differs with each drive unit. Do not attach a control unit to a different drive unit. Otherwise, an electrical circuit or the drive unit may fail.

N’enlevez pas l’unité de contrôle. Chaque partie électromagnétique a son propre unité de contrôle. Ne mettez pas autre unité de contrôle au module de puissance sinon il pourrait y avoir un court circuit ou un disfonctionnement de la partie électromagnétique.

Caution

Precautions for use

Page 16

• Solution in the discharge line may be under pressure. Release the pressure from the discharge line before disconnecting plumbing or disassembly of the pump to avoid solution spray.

Le liquide au refoulement peut être sous pression. Relâchez la pression du refoulement avant de démonter la pompe ou d’enlevez le tubage pour éviter tout jet de liquide.

• Wear protective clothing when handling or working with pumps. Consult solution MSDS for appropriate precautions. Do not come into contact with residual solution.

Portez un équipement de sécurité lorsque vous manipulez la pompe. Consultez le MSDS pour utilisez les précautions appropriées .Evitez tout contact avec le liquide chimique.

• Do not clean the pump or nameplate with a solvent such as benzine or thinner. This may discolour the pump or erase printing. Use a dry or damp cloth or a neutral detergent.

Ne nettoyez pas la pompe ou la plaque signalétique à l’aide d’un solvant comme le benzène ou le white spirit. Cela pourrait décolorer la pompe ou effacer l’impression. Utilisez un tissu sec ou mouillé avec de l’eau ou un détergent neutre.

Requirement

Caution

Thinner

Benzine

• This pump has been eveluated for use wit h water only. Cette pompe a été testée uniquement avec de l'eau.

Precautions for use

Caution

Page 17

Overview

Pump characteristics, features and part names are described in this section.

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 electromagnetic 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. This action transfers liquid along with pump head valve action.

Control unit Pump headDrive unit

OUT

Spring

Pump head valve

(Discharge side)

Plunger

Diaphragm

Overview

Pump head valve

(Suction side)

Introduction

Page 18

● Auto degassing system

Discharge port Air vent port

AIR

OUT

Automatic air vent valve body

LOCK

Pump head valve

Air vent 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.

• Entrained air is expelled to ope n air through the automatic air vent valve body.

• Only liquid is delivered to a discharge line through the discharge port. Note a small amount of liquid is expelled with entrained air.

Introduction

Page 19

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)

With the aim of improving resistance to exposure to liquid, the control unit is installed on the back of the pump and the control panel is protected with a cover as standard equipment. A rubber gasket is provided between the pump head and the bracket to prevent water from entering from the periphery of the pump head.

* This pump is not completely water resistant. Protect the pump with a cover when

installing it out of doors.

Operational functions

Overview

● Manual operation (see page 54)

The start/stop of the pump by key operation

Key operation (Push key)

Run Run

Pump operation

Stop

*Manual operation can be done at any time during operation or stop.

Stop

● EXT operation (see page 55)

The pump operation by the external signal. The external operation is available after multiplier or divisor programming.

Introduction

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.

Pulse signal input

Pump operation

1 2 3 4 5 1 2 3 4 5

A buffer works when the pump receives an external signal before the programmed shots per signal is completed.

Pulse signal input

Pump operation

1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3

*The buffer stores the external signals for up to 65535 shots.

Divisor programming (See page 59)

1-9999 pulse signals can be programmed to make one shot.

* The pump can not run over a programmed stroke rate (max. 100%) even if a divisor

is set to run the pump faster.

*The pump makes one shot per pulse when a divisor is programmed to 1.

Example) When a divisor is programmed to 5, the pump makes one shot per

5-signal.

Pulse signal input

1 2 3 4 5 1 2 3 4 5 1 2 3 4 5

Pump operation

Introduction

Page 21

ANA. R (analogue rigid) programming (See page 63)

The pump increases/decreases a flow rate in proportion to 0-20mA. Four (420, 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" blinks on the screen). Check wiring as necessary. Pushing the start/stop key, this state is released.

100%

Condition The left graph is in the following programs. a. 4-20 (Default setting) b. 20-4 c. 0-20

d. 20-0

Overview

20mA

ANA. V (analogue variable) programming (See page 61)

The pump increases/decreases a flow rate in proportion to 0-20mA. Setting two points can draw a straight line. Depending on the position of the two points, 0 % may not come at 0mA in some cases. When a stroke rate could become over 100% at some mA due to the setting, pump speed is limited to 100%.

100%

Condition The left graph is in the following setting. P1 = 6 mA, 30% P2 = 17 mA, 85%

20mA

Introduction

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

Run Run

Pump operation

Stop

The pump stops running while the STOP signal is inputted.

When "NOR. CL" is selected...

The pump runs while receiving the external signal via the STOP terminal.

*The pump stops operation when the stop signal is released.

STOP signal input

Run

Pump operation

Stop Stop

● Pre-STOP function (See page 66) When "NOR. OP" is selected...

The STOP LED lights orange while the pump receiving the external signal via the Pre-STOP terminal (a contact is closed). Note the pump does not stop running.

When "NOR. CL" is selected...

The STOP LED stops lightening while the pump receiving the external signal via the Pre-STOP terminal (a contact is closed).

Introduction

Page 23

● AUX function (See page 43)

The pump runs at the maximum stroke rate while receiving 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

● Priming function (See page 43)

The pump runs at the maximum stroke rate while both the UP and DOWN keys are pressed. Use this function for degassing.

Press Press

▲+▼ keys

Overview

Pump operation

1 2 3 4 5 1 2 3

● OUTPUT function (See page 70)

Signals can be sent via the output terminal in sync with manual operation. The terminal can be set to on or off.

Introduction

Page 24

Part names

Pump

Adjusting screw

Used for opening the air vent port.

Air vent port

Always connect a tube. Be sure to return the tube end to a supply tank or a container. The air vent port can rotate 90 degrees.

Outlet

Air vent body

Control unit

Used for the start/stop of the pump and stroke rate adjustment/programming.

Stroke length adjusting knob

Used for adjusting a flow rate.

Part names

Inlet

Pump head

Nameplate

Describes the pump specifications.

Base

Always fix with bolts.

Page 25

Operational panel

Display

An operational status, a selected mode and a programmed value are shown here.

START/STOP key

Used for starting/stopping the pump operation.

EXT key

Used for entering the EXT mode.

MAN DIV MULT ANA. RV P

OVER P1 2 LOCK Err Disp SET

EXT

DOWN key

Used for decreasing numeric values or selecting a program-

STOP

LED

Lights as the pump is turned on and blinks at each shot.

ming mode.

UP key

Used for increasing numeric values or selecting a programming mode.

spm

L/h

DISP

DISP key

Used for checking flow information or changing units.

Overview

Part names

Page 26

■

Basic displays & Pump states

STOP LED

lights red

MAN

MULT

DIV

――

ANA. R

ANA. V

―

――

―― ―

ON LED lights

orange

Manual wait state. Display shows stroke rate in %.

ON LED lights

EXT(Multiply) mode. The pump is waiting for the external signal.

EXT(Divide) mode. The pump is waiting for the external signal.

EXT(ANA. R) mode. The pump is waiting.

EXT(ANA. V) mode. The pump is waiting.

green

―

ON LED blinks

green

The pump is running in manual mode. Display shows stroke rate in %.

EXT(Multiply) mode. The pump is making the displayed # of shots per signal.

EXT(Divide) mode. The pump is running at the displayed stroke rate.

EXT(ANA. R) mode. The pump is running at the displayed stroke rate.

EXT(ANA. V) mode. The pump is running at the displayed stroke rate.

AUX mode. The pump is running at the maximum stroke rate.

Part names

Page 27

STOP LED

lights red

ON LED lights

orange

ON LED lights

green

ON LED blinks

green

EXT(Multiply)

MULT

―

SET

programming mode. The pump is set to make the displayed # of shots per

――

Overview

signal. EXT(Divide)

programming

DIV

―

SET

mode. The pump is set to make one shot for the

――

displayed # of signals.

Operation stop by the STOP signal. ON LED

―――

lights green. STOP signal

input in the manual wait

―――

state. ON LED lights orange.

MAN

LOCK

Keypads are locked. Keypad operation is ineffective in this state. Release keypad lock before operation.

PRIME mode. The pump

―――

is running at the maximum stroke rate.

Part names

Page 28

Identiﬁcation codes

The model codes of the pump/drive units and the control unit represent the following information.

Pump/Drive units

EWN - B 11 VC

U R -

a b c d e f g h i

a. Series name

EWN: Multivoltage electromagnetic metering pump

b. Drive unit (Average power consumption)

B: 20W C: 24W

c. Diaphragm effective diameter

09: 8mm 11: 10mm 16: 15mm 21: 20mm 31: 30mm 36: 35mm

d. Wet end materials

Code Pump head Valve O ring Valve seat Gasket Diaphragm

VC VH HC276 EPDM EPDM VE CE EPDM EPDM PC PH HC276 EPDM EPDM PE CE EPDM EPDM FC TC FKM FKM SH SUS316 HC276 SUS316

PVC

GFRPP

PVDF CE

CE FKM FKM

PCTFE

―

PTFE

+ EPDM

Automatic air vent (Auto degassing type)

Air vent valve

Code

VC VH HC276 HC276 EPDM EPDM

guide A

PVC PVC

Material code

PVC : Transparent polyvinyl chloride GFRPP : PVDF : Polyvinylidene diﬂuoride EPDM : Ethylene-propylene rubber FKM : Fluorine-contained rubber PTFE : Polytetraﬂuoroethylene HC276 : HASTELLOY C276 SUS316 : Austenite stainless steel CE : Alumina ceramics PCTFE : Polymonochlorotriﬂuoroethyle

Identiﬁcation codes

Air vent valve

guide B

Valve Separate pin Valve seat O ring

CE Titanium FKM FKM

Glassﬁber -reinforced polypropylene

Page 29

e. Tube connection bore

No. Hose size (ID×OD) Wet end materials Pump models

ø1/4"×ø3/8"

ø3/8"×ø1/2"

code*

1ø4×ø9

2ø4×ø6

3ø6×ø8 4 ø8×ø13 VC/VH/VE/PC/PH /PE EWN-31 & -36

5 ø9×ø12 VC/VH/VE/PC/PH/PE EWN-31 & -36

6 ø10×ø12 VC/VH/VE/PC/PH/PE EWN-31 & -36 23 ø6×ø12 VC/VC-C EWN-09/-11/-16 & -21 24 ø5×ø8 VC/TC/VC-C EWN-09/-11/-16 & -21

1/10

2/10

3/10

* ø4×ø6 and ø6×ø12 are equipped to the EWN-09/-11/-16/-21 (VC-C type).

1/4-18NPT FC/SH/SH-H /SH -H2

IN/AIR: 1/4"×ø3/8"

OUT: 1/4-18NPT

IN: ø15×ø22

OUT: ø3/8"×ø1/2"

IN: ø4×ø9

OUT: 1/4-18NPT

IN: ø4×ø6

OUT: 1/4-18NPT

IN: ø6×ø8

OUT: 1/4-18NPT

VC/VH/VE/PC/PH/PE/TC/VC/

VH/VE-C/VC-A/VH-A

VC/VH/VE/PC/PH/PE/TC

PC/PE-H/PE-H2 EWN-11 & -16

P6-V EWN-31

VC/VH/VE/PC/PH/PE/VC/

VH/VE-C

VC/VH/VE/PC/PH/PE/TC/VC/

VH/VE-C/VC-A/VH-A

VC/VH/VE/PC/PH/PE/TC/VC/

VH/VE-C/VC-A/VH-A

/VC-A/VH-A

PC/PH/PE-H EWN-11 & -16 PC/PH/PE-H EWN-11 & -16 PC/PH/PE-H EWN-11 & -16

EWN-09/-11/-16 & -21

EWN-31 & -36

EWN-11/-1 6/-2 1/-31 & -36

EWN-09/-11/-16 & -21

Overview

f. Power cable

U: American 115VAC type U2: American 230 VAC type

g. Control unit function

R: Standard

h. Special version

C: High compression type H: High pressure type V: High viscosity type A: Auto degassing type

i. Special conﬁguration

H2: High pressure type (2MPa)

Identiﬁcation codes

Page 30

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.

• 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.

• Risk of an electrical leak or shock. Do not use a damaged pump.

Pump mounting

Select an installation location and mount the pump.

Necessary tools

• Four M5 bolts (pump mounting)

• Adjustable wrench or spanner

Select a suitable place.

Always select a ﬂat ﬂoor free of vibration. See the "Precautions for use" section for detail. Flooded suction is recommended when handling a gaseous liquid such as sodium hypochlorite.

Anchor the pump by the M5 bolts.

Be sure to ﬁx the pump at four points.

NOTE

Install the pump horizontally. If the pump is installed at a tilt, a ﬂow may reduce.

Pump mounting

Page 31

Pipework

Connect tubes to the pump and install a check valve.

Before operation

• Cut the tube ends ﬂat.

Necessary tools

• Adjustable wrench or spanner

Tube connection

a. Pass a tube into the ﬁtting nut and

hose stopper and then slide it down to the hose adapter as far as it will go.

b. Fit the tube end (hose adapter) to the

ﬁtting. Then hand tighten the ﬁtting nut.

c. Retighten the ﬁtting nut by turning it

180 degrees with an adjustable wrench or spanner.

* The plastic ﬁtting nut may be broken if it is

tightened too much.

Tube end (Side view)

Installation

Tube

Fitting nut

Hose stopper

Slide it down

Hose adapter

Fitting

Connect tubes into the inlet and

outlet.

Tube

Outlet

Inlet

Pipework

Page 32

Connect an air bleed tube into the

air vent port.

Route back the other tube end to a supply tank or a container. For the auto degassing type, connect another air bleed tube into the automatic air vent valve body as well.

Decide an air vent port direction.

The air vent port can rotate 90 degrees.

a. Turn the lock nut anticlockwise. b. Adjust the direction of the air vent

port.

c. Hand-tighten the lock nut, holding

the air vent body A.

d. Turn the lock nut 90 degrees

clockwise further with an adjustable wrench or spanner.

Air vent port

Tube

Air vent port

Air vent body A Lock nut

NOTE

The air vent port is not provided to the EWNFC type. Purchase and install an air vent valve.

Pipework

Air vent

valve

Check valve

Three way joint

Discharge line

Pump

Page 33

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.

• A suct ion side liquid level is higher than a discharge side (See the diagram below). Or an injection point is below a suction side liquid level at atmospheric pressure.

Suction side

Discharge side

• The elevation difference between two liquid levels is ﬁve meters or below, even if a discharge side liquid level is higher than a suction side.

5m or below

Discharge side

Suction side

• A suction side pressure is higher than a discharge side pressure.

Installation

• A discharge pressure (including pipe resistance and discharge head) is below

0.13MPa. (0.049MPa for B31 and C36).

Pipework

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

Outer dia Ф9R1/2

R3/8

* The CBN check valve of which the both ends are tube connections is also

available. Contact us or your nearest distributor.

CBN check valve

Outer dia Ф12R1/2

R3/8

NOTE

Periodically clean or replace a check valve with new one for the prevention of crystal clogging.

Tubing layout

Flooded suction application Suction lift application

Accumulator/ Chamber

Air vent line

Accumulator/ Chamber

Check valveCheck valve

Pump

* Flooded suction is recommended when handling a gaseous liquid such as sodium

hypochlorite. For the auto degassing type, keep a suction lift at 1m or below. Otherwise, the air vent valve may not function. Before resuming operation, always perform degassing by using the adjusting screw.

* Do not lay the air vent line upwards, or the line may be blocked by liquid.

Pipework

Air vent line

Page 35

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 observe applicable codes or regulations.

• Observe the rated voltage range, or the electrical circuit in the control unit may fail.

• Do not perform wiring work while electric power is on. Otherwise, an electrical shock or a short circuit may result. Be sure to turn off the power before wiring work.

• Be careful for electric power not to be turned on during work.

• Replacement of a power cable should be conducted by a manufacturer, his agency or a skilled person. Otherwise, an accident may result.

• This pump is supplied with a grounding conductor and grounding-type attachment plug. To reduce the risk of electric shock, be certain that it is connected only to a properly grounded, grounding type receptacle.

Installation

Necessary tools

• Adjustable wrench or spanner • Phillips screw driver

• Precision screw driver

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.

* Make sure the earth plug is seated in se-

curely as well.

Wiring

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. See page 37 for the precautions for ON-OFF control by a mechanical relay.

Apply power at a sitting Do not apply gradually

POWER

ON OFF

POWER

TIME

ON OFF

Surge voltage

The electronic circuit in the control unit may fail due to surge voltage. Do not place the pump close to a high power device of 200V or more which may generate large surge voltage. Otherwise, take any of the following measures.

• Install a sur ge absorption element (ex. a varister with capacity of 2000A or more) via power cable.

Surge absorption element

Recommended varisters Panasonic ERZV14D431 KOA NVD14UCD430 See manufacturer's catalogues for detail.

TIM

• Install a noise cut transformer via power cable.

Noise cut transformer

Wiring

Page 37

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.

• Do not turn ON/OFF power voltage more than six times per hour.

• When using a mechanical relay for ON-OFF operation, its contact capacity should be 5A or more. Contact point may fail if it is less than 5A.

• If a mechanical relay with the contact capacity of 5A is used, the maximum allowable ON/OFF operation is about 150,000 times. The contact capacity should be 10A or more when making ON-OFF operation over 150,000 times or sharing a power source with a large capacity equipment. Otherwise a contact point may fail by surge voltage.

• Use a solid state relay (SSR) as necessary (such as the OMRON G3F). See manufacturer's catalogues for detail.

Signal wire connection

Use DIN 4- or 5-pin female connector cables. We recommend the use of Binder connector cables (German manufacturer). Contact us for detail.

Installation

Binder connector cables 5-pin : 713 series 99-0436-10-05 Input signals 4-pin : 715 series 99-0430-15-04 Level sensor signal

Connect these cables according to the following procedures. See manufacture's instructions when using other connectors than Binder.

Points to be checked

• Check that the main power is turned off. The pump is still charged right after turning off power. Wait for one

minute before wiring.

Wiring

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.

• The following products are the recommended SSRs (Solid State Relays) for signal input. Any other SSRs may cause malfunction. See manufacturer's information for details on these SSRs. –OMRON G3FD-102S or G3FD-102SN –OMRON G3TA-IDZR02S or G3TA-IDZR02SM

• When using a mechanical relay for signal input, its minimum application load should be 5mA or below.

* Use either a no-voltage contact or an open collector for the Input and Level sensor

signals.

* Set pulse duration in 10-100ms (100Hz or below).

Take apart the DIN connector as necessary to pass a cable through it.

A cable diameter should be ø4 - ø6. Otherwise, the DIN connector can not seal the cable.

Strip the wire ends to connect and secure them to each position.

A cross sectional area of a wire should be 0.75mm2 or below.

Assemble the DIN connector.

Pull the cable lightly so as to check it is secured enough. If it is loose, the connector can not seal the cable.

Wiring

Page 39

■

Connections

• Level sensor

The EWN have two stage level sensor, the Pre-STOP and STOP alarms. Connect 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. Use the STOP and COM2 when just one signal is used.

• When using an open collector...

Pay attention to polarity. Pre-STOP and STOP are plus(+), and COM2 is minus(-). (Maximum 2.3mA at 12V)

• When using a contact...

The contact should be designed for an electronic circuit. The minimum application load should be 1mA or less.

Installation

1 : STOP 2 : Pre-STOP 3 : Free

4 : COM2

PUMP

Level sensor

(STOP)

Open

• Stop function

The pump stops running as receiving the external signal. Use the STOP and COM2.

NOTE

Frequent ON-OFF operation should be controlled via the Stop function. Otherwise, the number of ON-OFF times (turning on/off power) should be restricted to six times per hour.

Wiring

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)

• When using a contact...

The contact should be designed for an electronic circuit. The minimum application load should be 1mA or less.

1 : Free 2 : Pulse 3 : Free 4 : Free

5 : COM1

• Analogue signal

In the EXT (ANA.R or ANA.V) mode, the pump runs in a proportional control as receiving the analogue signal.

1 : Free 2 : Free 3 : ANA 4 : Free 5 : COM1

Wiring

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

OUT

3 : Free 4 : OUT

5 : COM

• AUX signal

The pump runs at the max stroke rate as receiving the AUX signal.

1 : AUX 2 : Free 3 : Free 4 : Free 5 : COM1

Installation

Wiring

Page 42

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...

• Liquid level in a supply tank is enough.

• Tubing is securely connected and is free from leakage and clogging.

• Discharge/suction valves are opened.

• A power voltage is in the allowable range.

• Electrical wiring is correct and is free from the risk of short circuit and electri- cal leakage.

Retightening of pump head ﬁxing bolts

Important

The pump head ﬁxing bolts may loosen when plastic parts creep due to temperature change in storage or in transit, and this can lead to leakage. Be sure to retighten the bolts evenly to the speciﬁed tightening torque below in diagonal order before starting operation.

Tightening torque

Model code Torque Bolts EWN-B09•11•16•21 19 lb-in M4 Hex. socket head bolt EWN-B31 22.6 lb-in M4 Hex. socket head bolt EWN-C16•21 19 lb-in M4 Hex. socket head bolt EWN-C31 22.6 lb-in M4 Hex. socket head bolt EWN-C36 22.6 lb-in M5 Hex. socket head bolt

*Tighten ﬁxing bolts once every three months.

Before operation

Page 43

■

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).

Straight long

part

Short part

90°

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

• When a ﬂow rate is too low

• After liquid is replaced in a supply tank

• After a long period of stoppage

• After maintenance and inspection

Operation

NOTE

• Both gas and chemical come out together through an air bleed tube. Place the end of the tube in a supply tank or a container.

• Some chemicals may cause skin trouble or damage component parts. When your hand or component parts get wet with chemical liquid, wipe off immediately.

• For the auto degassing type, this process is not necessary as long as the air vent valve works effectively. But if air lock prevents this function, follow this process to expel gas.

Before operation

Page 44

Points to be checked

• 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.

* The pump waits in the manual mode when turn-

ing on power with a default setting or calls up a previous mode at the last shutoff.

Rotate the adjusting screw two revolutions

anticlockwise to open the air vent port.

* Do not rotate it three revolutions. Otherwise,

liquid may come out from the air vent port.

Air bleed tube

STOP

ON LED

Adjusting screw

MAN

Before operation

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

MAN

STOP

MAN

• Enter the external signal via the AUX terminals.

STOP

MAN

AUX signal

input

STOP

MAN

• Press and hold both the UP and DOWN keys.

MAN

STOP

Keep the pump running for more than ten minutes for degassing.

Stop the pump by...

STOP

MAN

• 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 discharged.

*Degassing is required again if the pump does not discharge liquid.

Check connections for leakage.

Degassing has now been completed.

* The air vent port is not provided to the FC type. Install an air vent valve on a

discharge line for degassing. See page 32 for detail. Also, the FC type has the threaded outlet & inlet, so that a tube can not be ﬁt directory. Use general joints for tubing.

Operation

Before operation

Page 46

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. A ﬂow rate per shot can be controlled by changing stroke length. The widest moving distance is deﬁned as 100% stroke length.

First adjust a ﬂow rate by stroke rate adjustment. Use stroke length adjustment for the range where stroke rate adjustment can not reach. Determine a suitable stroke rate and a stroke length, taking account of operating conditions and liquid characteristics.

The following procedure is recommended.

Change a stroke rate with stroke length 100% to adjust a ﬂow rate.

See "Stroke rate adjustment" on page 47 and "Stroke length adjustment" on page 49 for detail.

Measure a ﬂow rate.

If a ﬂow rate is lower than a speciﬁed level, increase a stroke rate

and measure the ﬂow again.

Change a stroke length for ﬁne adjustment.

Measure the ﬂow again to see the speciﬁed level is obtained.

Before operation

Page 47

Flow rate, stroke rate and stroke length

B type C type

Fixed stroke rate

100

Discharge capacity

25 50 75 100

Stroke length adjustment

Stroke rate is fixed at 100%

Stroke rate is fixed at 75%

Stroke rate is fixed at 50%

Fixed stroke rate

100

Discharge capacity

25 50 75 100

Stroke length adjustment

Stroke rate is fixed at 100%

Stroke rate is fixed at 75%

Stroke rate is fixed at 50%

Precautions of ﬂow rate adjustment

• When back pressure is high

Set stroke length to 100% and adjust a ﬂow by changing a stroke rate.

• When a ﬂow rate per shot greatly inﬂuences the reaction in neutraliza- tion or titration application

Shorten a stroke length to reduce a ﬂow rate per shot. And then adjust a ﬂow by changing a stroke rate.

• When pumping gaseous liquid such as sodium hypoch lorite (NaClO) and hydrazine solution (N

2H2O2)

Set a stroke length to 100% and adjust a ﬂow by changing stroke rate. Note air lock may occur when a stroke length is set too short.

Operation

■

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

100

Discharge capacity

Stroke rate adjustment

50 100

* The ﬂow rate described on the

nameplate is at 100%.

Before operation

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",

STOP

MAN

"DIV", "ANA.R" or "ANA.V" is on the screen.

• When "STOP" or "-STOP" appears on the screen, see "STOP function cancellation" on 68 page and release the STOP function.

Use the UP or DOWN key to adjust stroke rate.

• The 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%. 0.1% or 100% skips to 100% or 0.1% when the key is released and pushed again.

MAN

Push the start/stop key.

The ON LED blinks at each shot during operation.

MAN

STOP

MAN

Before operation

Page 49

■

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

100

Discharge capacity

25 50 75 100

Stroke length adjustment

*The ﬂow rate described on the nameplate is at 100%.

NOTE

Do not rotate the stroke length adjusting knob when the pump is not running.

Turn on power and push the start/stop key to run the pump.

The ON LED blinks during operation.

STOP

MAN

STOP

MAN

Operation

Rotate the stroke length adjusting knob

and adjust a ﬂow rate while the pump is running.

Stroke length adjusting knob

Before operation

Page 50

Before a long period of stoppage (One month or more)

Clean wet ends and the inside of tubing.

• Run the pump wit h 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. Otherwise, the last key operation may not be put in memory. In this case the pump unintentionally starts to run as powered on, discharging liquid.

When the pump does not transfer liquid at resuming operation.

• Clean the valve sets and remove foreign matters.

• If gas is in the pump head, expel gas and readjust a ﬂow rate. See "Degassing" on page 43 and "Flow rate adjustment" on page 46 for detail.

Operation programming

Page 51

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* Multiply/Divide/Analogue

selection

100.0% 0.1-100.0% 0.1* DIV

ANA-V, ANA-R, /NNNN,

XNNNN

Divisor 1 1-9999 1* Multiplier 1 1-9999 1* Analogue variable - 0-20mA, 0-100% 0.1* Analogue rigid 4-20 4-20, 20-4, 0-20, 20-0 STOP function*

NOR.OP NOR.OP, NOR.CL Pre-STOP function NOR.OP NOR.OP, NOR.CL Analogue mode selection ANA-R ANA-R, ANA-V Output function STOP STOP, SPM CODE programming 00000 00000-99999 1 Unit selection % %, GPH, L/h, ml/min -

*1 The upper limit stroke rate in EXT mode *2 The ﬂow rate increases/decreases as pushing the UP/DOWN keys. Press and hold

either key for quick change.

*3 A figure increases/decreases as pushing the UP/DOWN keys. Press and hold either

key for quick change.

*4 Note that the pump starts to run as returning to the wait state in the manual mode as

long as the pump is receiving the STOP signal with "NOR.CL".

Operation

Operation programming

Page 52

Programming ﬂow

Power ON

Calibration mode

SET

MAN

Save Cancel

SET

Flow rate display

MAN

GPH

Disp

3 sec.

SET

Stroke rate setting

MAN

Manual operation

MAN

Prime mode

MAN

ANA-V programming routine

ANA. V

ANA-R programming routine

mA SET

Manual mode

ANA.R

mA SET

MAN

EXT mod e

DIV

MULT

ANA. V

ANA.R

Keypad lock

MAN

1 sec.

MAN

L/h

Disp

mL/m

Disp

3 sec.

spm

Operation programming

ANA. V

DISP SET

ANA. V

P 2

SET

ANA.R

mA SET

ANA.R

mA SET

3 sec.

MAN

LOCK

Any key

other than .

LOCK

3 sec.

ANA. V

P 2

DISP SET

ANA.R

mA SET

MAN

LOCK

Page 53

3 sec.

User mode

EXT mode selection

SET

EXT mod e programming

DIV

MULT

See ANA-V

programming

routine

See ANA-R

programming

routine

SET

Operation

Operation programming

SET

2 LOCK

Page 54

Manual 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 turning

on power with a default setting or calls up a previous mode at the last shutoff.

Enter manual mode.

Move to the next step when a stroke rate (0.1-100%) is shown on the screen.

When "MULT", "DIV", "ANA-R" or "ANA-V" is on the screen...

Push the start/stop key once to enter the wait state in the manual mode.

STOP

MAN

STOP

DIV

STOP

MAN

When "STOP" or "-STOP" is on the screen...

See "STOP function cancellation" on page 68 and release the function.

Use the UP or DOWN key to adjust 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%. 0.1 or 100% skips to 100 or 0.1% when the key is released and pushed again.

MAN

Operation programming

Page 55

Push the start/stop key.

The pump starts to run.

• The LED blinks at each shot.

STOP

MAN

STOP

MAN

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.

NOTE

• Manual operation stroke rate is applied as the EXT upper limit spm. For example, even if a multiplier or a divisor is set to run the pump at 100% (360spm), the pump does not run over 50% (180spm) as long as manual stroke rate is 50%.

• A stroke rate skips from 100 to 0.1% by pushing the UP key once. Pay attention to this point when programming a stroke rate for the prevention of erroneous programming.

Operation

Enter manual mode.

Enter the manual mode to indicate a stroke rate on the screen.

• Push the start/stop key when "MULT", "DIV", "ANA-R" or "ANA-V" is on the screen.

• When "STOP" or "-STOP" appears on the screen, see "STOP function cancellation" on 68 page and release the STOP function.

MAN

STOP

Operation programming

Page 56

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%. 0.1 or 100% skips to 100 or 0.1% when the key is released and pushed again.

MAN

Push the EXT key to enter EXT mode.

MAN

Note that the pump starts to run in sync with the external signal as entering EXT mode.

MAN

STOP

■

EXT mode programming

STOP

MULT

The following features can be programmed for the EXT operation.

• Multiplier programming

The number of shots per signal is programmed. A default setting is one shot per signal.

• Di visor programming

The number of signals per shot is programmed. A default setting is one shot per signal.

• Analogue programming

Current values are programmed for a proportional control.

NOTE

Pushing the start/stop key, a program is entered. Do not forget to enter your programming. Note if the pump is unplugged before pushing the start/stop key, your programming is not stored.

Operation programming

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

EXT mode.

start/stop

key and stop the pump when it is running. Then call up

MAN

STOP

Press and hold the EXT key for one second and enter the EXT mode

STOP

DIV

selection.

DIV

STOP

Select "MULT" (Multiply).

STOP

SET

Scroll through the EXT mode selection by the UP and DOWN keys.

SETSET

Operation

Operation programming

Page 58

Push the EXT key and call up the multiplier programming screen.

STOP

Use the UP or DOWN key to program a multiplier.

SET

STOP

MULT

Disp SET

• 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. 1 or 9999 skips to 9999 or 1 when the key is released and pushed again.

MULT

Disp SET

Push the EXT key to return to the EXT mode selection.

STOP

MULT

Disp SET

STOP

MULT

Disp SET

SET

Push the start/stop key to return to EXT mode.

The pump starts to run according to the multiplier programming.

STOP

Operation programming

SET

STOP

MULT

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. This irregular operation occurs as the external signal is cancelled. Note that this is not malfunction. In order to avoid this phenomenon, perform 1:1 operation by programming a multiplier to 1.

• Do not enter the external signal during the programming.

Enter EXT mode.

Push the EXT key to move from manual mode to EXT mode.

* Push the

EXT mode.

start/stop

key and stop the pump when it is running. Then call up

MAN

STOP

Press and hold the EXT key for one second and enter the EXT mode

STOP

MULT

selection.

STOP

Select "DIV" (Divide).

MULT

STOP

SET

Scroll through the EXT mode selection by the UP and DOWN keys.

SETSET

Operation

Operation programming

Page 60

Push the EXT key and call up the multiplier programming screen.

STOP

Use the UP or DOWN key to program a divisor.

SET

STOP

DIV

SET

• A divisor increases/decreases as pushing the UP/DOWN keys.

• Press and hold either key for more than three seconds for quick change. Quick change stops at 1 or 9999. 1 or 9999 skips to 9999 or 1 when the key is released and pushed again.

DIV

SET

Push the EXT key to return to the EXT mode selection.

DIV

STOP

SET

DIV

SET

STOP

SET

Push the start/stop key to return to EXT mode.

The pump starts to run according to the multiplier programming.

DIV

STOP

SET

STOP

Flow rate display changes every time the DISP key is pressed.

Operation programming

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

EXT mode.

start/stop

key and stop the pump when it is running. Then call up

MAN

STOP

Press and hold the EXT key for one second and enter the EXT mode

STOP

MULT

selection.

STOP

Select "ANA-V" (Analogue variable).

MULT

STOP

SET

Scroll through the EXT mode selection by the UP and DOWN keys.

SETSET

Operation

Push the EXT key and enter a current value at P1.

• A current value increases/decreases as pushing the UP/DOWN keys.

• Press and hold either key for three seconds for quick change. Quick change stops at 0.0 or 20.0mA. 0.0 or 20.0mA skips to 20.0 or 0.0mA when the key is released and pushed again.

ANA. V

mA SET

Operation programming

STOP

SET

STOP

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.

STOP

Push the DISP key and enter a current value at P2.

ANA. V

mA SET

STOP

ANA. V

Disp SET

• A current value increases/decreases as pushing the UP/DOWN keys.

• Press and hold either key for three seconds for quick change. Quick

change stops at 0.0 or 20.0mA. 0.0 or 20.0mA skips to 20.0 or 0.0mA when the key is released and pushed again.

STOP

Push the DISP key and enter a stroke rate at P2.

ANA. V

Disp SET

STOP

ANA. V

P 2

mA SET

• 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.

STOP

ANA. V

P 2

mA SET

STOP

ANA. V

P 2

Disp SET

Push the EXT key to return to the EXT mode selection.

STOP

Operation programming

ANA. V

P 2

Disp SET

STOP

SET

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

SET

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.

start/stop

MAN

key and stop the pump when it is running. Then call up

MULT

STOP

* Push the

EXT mode.

STOP

Press and hold the EXT key for one second and enter the EXT mode

selection.

Operation

STOP

Select "ANA-R" (Analogue rigid).

MULT

STOP

SET

Scroll through the EXT mode selection by the UP and DOWN keys.

SETSET

Operation programming

Page 64

Push the EXT key and select a preset program.

ANA.R

mA SET

STOP

SET

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.

STOP

Push the start/stop key to enter EXT mode.

STOP

ANA.R

mA SET

SET

STOP

SET

ANA.R

The pump starts to run in proportional control according to the ANA-R programming.

Operation programming

Page 65

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. The pump does not stop running.

• OUTPUT function

The pump sends out signals via the OUTPUT terminal in sync with pump shots or the STOP signal.

• ANA-V/-R selection

Select either "ANA-V" or "ANA-R" for the EXT mode.

• Buffer ON/OFF selection

Excessive external signals that are not reﬂected to the MUL T or DIV opera tion can be stored. Activate or inactivate the buffer.

• PIN number entry

A PIN is required to release a keypad lock state.

NOTE

The ANA-V/-R selection is available only when "ANA-V" or "ANA-R" has been selected in the EXT mode selection. The Buffer ON/OFF selection is available only when "DIV" or "MULT" has been selected.

EXT mo de selection

User mode

Operation

SET

Buffer ON/OFF

selection

ANA-V/-R selection

Operation programming

Page 66

■

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.

Push the start/stop key to return to the manual wait state if the pump is running in manual mode or in EXT mode.

MAN

STOP

Push the EXT key for three seconds to call up the user mode.

MAN

STOP

Operation programming

STOP

Page 67

Select "STOP" or "P-STP".

Scroll through the User mode selection by the UP and DOWN keys.

Push the EXT key.

STOP

Select "NOR. OP" or "NOR. CL".

Push the start/stop key to return to manual mode.

STOP

2 2

STOP

MAN

Operation

The screen indicates that the STOP function is active.

Operation programming

Page 68

■

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.

MAN

STOP

Press and hold the EXT key for three seconds to enter User mode.

MAN

STOP

Select "STOP" or "P-STP".

Scroll through the User mode selection by the UP and DOWN keys.

Operation programming

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

MAN

The STOP or Pre-STOP function now has been cancelled.

Operation

Operation programming

Page 70

■

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).

The pump sends the OUTPUT signal while receiving no STOP signal (with

the setting of operation resumption at STOP signal input).

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.

MAN

STOP

Push the EXT key for three seconds to call up the user mode.

MAN

STOP

Select "OUT".

STOP

Scroll through the User mode selection by the UP and DOWN keys.

Operation programming

Page 71

Push the EXT key.

STOP

Select "STOP" or "SPM".

Push the start/stop key to return to manual mode.

STOP

MAN

The programming has now been reﬂected to the pump operation.

Operation

Operation programming

Page 72

■

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.

MAN

STOP

Push the EXT key for three seconds to call up the user mode.

MAN

STOP

Select "ANA".

STOP

Scroll through the User mode selection by the UP and DOWN keys.

Operation programming

Page 73

Push the EXT key.

STOP

Select "ANA-R" or "ANA-V".

Push the start/stop key to return to manual mode.

STOP

MAN

The programming has now been reﬂected to the pump operation.

Operation

Operation programming

Page 74

■

Buffer ON/OFF selection

• When "bM-ON" is selected...

Excessive external signals that are not reﬂected to the MULT or DIV operation 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.

Push the start/stop key to return to the manual wait state if the pump is running in manual mode or in EXT mode.

MAN

STOP

Push the EXT key for three seconds to call up the user mode.

MAN

STOP

Select "bF.MEM".

STOP

Scroll through the User mode selection by the UP and DOWN keys.

Operation programming

Page 75

Push the EXT key.

STOP

Select "bM-ON" or "bM-OF".

Push the start/stop key to return to manual mode.

STOP

2 2

STOP

MAN

The programming has now been reﬂected to the pump operation.

*The pump can run up to 65535 shots by the stored excessive signals.

Operation

Operation programming

Page 76

■

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.

MAN

STOP

Push the EXT key for three seconds to call up the user mode.

MAN

STOP

Select "CODE".

Scroll through the User mode selection by the UP and DOWN keys.

Operation programming

Page 77

Push the EXT key.

STOP

Use the UP and DOWN keys to create PIN number.

SET2 LOCK SET2 LOCK

STOP

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

SET2 LOCK

STOP

MAN

The programming has now been entered.

*Pushing the EXT key, the programming is cancelled.

SET2 LOCK

Operation

Operation programming

Page 78

Keypad lock

Keypad lock can be active in the following states for the prevention of erroneous key operation.

Manual mode

Wait state During operation

STOP

MAN

STOP

MAN

EXT mode

STOP

DIV

ANA-R

STOP

MULT

ANA- V

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. If the pump is unplugged, a keypad lock state is recalled when the pump is turned on.

• Pressing the start/stop key for three seconds, keypad lock becomes active even when

the pump is receiving the STOP signal. Note that "STOP" or "-STOP" indication does not change but key operation is not accepted. Keypad lock indication appears when the STOP signal is released with "M-ON" or inputted with "M-OF".

Operation programming

Page 79

■

Keypad lock activation

Press and hold the start/stop key for more than three seconds.

STOP

MAN

STOP

MAN

LOCK

"LOCK" indication appears on the screen.

■

Keypad lock release

Push the EXT key once.

Enter the PIN number.

MAN

STOP

LOCK

STOP

SETLOCK

Shift to the next digit by pushing the DISP key.

*A default PIN number is "00000".

Push the EXT key once again.

The keypad lock state is released.

STOP

MAN

STOP

Pause/Resume operation

SETLOCK

• To stop the pump in the keypad lock state, press and hold the start/ stop key for three seconds.

• To resume operation in the keypad lock state, push the start/stop key once.

MAN

LOCK

MAN

LOCK

Operation programming

Operation

Page 80

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.

MAN

STOP

Press and hold the DISP key for three seconds to call up the cali-

bration mode.

MAN

STOP

Push the DISP key once to call up a ﬂow entry screen.

STOP

Operation programming

SET

STOP

SET

Page 81

Enter the measured ﬂow.

Shift to the next digit by pushing the DISP key.

*Pushing the EXT key, the programming is cancelled.

SET

Push the start stop key to return to the wait state.

SET

The programming is stored as "SAVE" indication appears on the screen. The maximum ﬂow can be checked at each unit.

* Always try to change a ﬂow rate by stroke rate. Changing the stroke length, the

ﬂow rate per shot is changed.

STOP

SET2 LOCK

STOP

MAN

Unit change

GPH, L/h or mL/m cycles through every time the DISP key is pushed. To display the maximum ﬂow rate at each unit, follow the above calibration procedure.

Operation

spm indication

The screen shows an actual spm in operation when both the EXT and DOWN keys are pressed for 3 seconds. 0spm will be shown after the pump has stopped.

Operation programming

Page 82

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.

• A lways wear protective clothing such as an eye protection, chemical resistant gloves, a mask and a face shield during disassembly, assembly or maintenance work. The speciﬁc solution will dictate the degree of protec- tion. Refer to MSDS precautions from the solution supplier.

• Risk of electrical shock. Be sure to turn off power to stop the pump and related devices before service is performed.

Before unplugging the pump

Always stop the pump by key operation. And wait for three seconds before unplugging the pump. Otherwise, the last key operation to stop the pump may not be put in memory. In this case the pump unintentionally starts to run as powered on, discharging liquid.

NOTE

• We do not assure material suitability in specified application and are not responsible for any failure due to corrosion or erosion.

• Contact us or your nearest distributor for repair or contact a manufacturer of the host machine which our product is built in.

• Be sure to drain chemicals and clean the inside of the pump before return so that a harmful chemical does not spill out in transit.

Maintenance

Page 83

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 does not run. (LED does not light. Blank screen.)

Liquid can not be pumped up.

A ﬂow rate ﬂuctuates.

Power voltage is too low. • Observe the allowable voltage

range of 90-264VAC

The pump is not powered. • Check the switch if it is installed.

• Correct wiring.

• Replace a breaking wire to new one.

Air lock in the pump • Expel air. See page 43. Stroke length is too short. • Run the pump at 100% stroke

length and adjust it to proper length.

Air ingress through suction line. • Correct tubing. A valve set is installed upside

down. Valve gaskets are not installed. • Install valve gaskets. Foreign matters are stuck in the

pump head valves. A ball valve is stuck on a valve

seat. Air stays in the pump head. • Expel air. See page 43. Overfeeding occurs. • Mount a check valve. See page

Foreign matters are stuck in the pump head valves.

Diaphragm is broken. • Replace diaphragm. Pressure ﬂuctuates at an injection

point.

• Reinstall the valve set.

• Dismantle, inspect and clean the valves. Replace as necessary.

• Dismantle, inspect and clean the valve. Replace as necessary.

33.

• Dismantle, inspect and clean the valves. Replace as necessary.

• Maintain a pressure constant at an injection point by optimizing piping or by relocating the point.

Maintenance

Troubleshooting

Page 84

States Possible causes Solutions

Liquid leaks. Loose ﬁt of the ﬁtting or the air vent

body Loose ﬁt of the pump head • Retighten the pump head. See

O rings or valve gaskets are not installed.

Diaphragm is broken. • Replace th e diaphragm. Excessive discharge pressure • Check that a discharge line is not

Key operation is ineffective.

The pump does not run.

The pump does not receive the external signal.

The pump does not store EXT mode programming.

Keypads are locked. • Release the keypad lock.

The pump is in a wait state. • Enter the pump into an operation

The pump has not received the external signal in the EXT mode.

EXT mode programming has not ﬁnished.

The signal has not been sent to the pump.

EXT mode programming has not been stored to the pump.

• Retighten them.

page 42.

• Install O rings and valve gaskets.

closed.

• Check if tubing is not clogged.

mode.

• Check wiring.

• Complete EXT mode program-

ming.

• Check wiring.

• Push the start/stop key after pro-

gramming.

Troubleshooting

Page 85

Inspection

Perform daily and periodic inspection to keep pump performance and safety.

Daily inspection

Check the following points. Upon sensing abnormality, stop operation immediately 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.

No. States Points to be checked How to check

1 Pumping • If liquid is pumped. Flow meter or visual

inspection

• If the suction and discharge pressure are normal.

• If liquid is deteriorated, crystallized or settled?

2 Noise and vibration • If abnormal noise or vibration occurs.

They are signs of abnormal operation.

3 Air ingress from

pump head joints and a suction line

• If leakage occurs.

• If pumped liquid includes air bubbles, check lines for leakage and retighten as necessary.

Check speciﬁca- tions.

Visual or audio inspection

Periodic inspection

Retighten the pump head mounting bolts evenly to the following torque in diagonal order.

* Mounting bolts may loosen in operation. How fast the bolts start to loosen is depend-

ing on operating conditions.

Tightening torque

*A hexagon wrench can be used for a torque wrench. See page 43.

Inspection

Maintenance

Page 86

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

• Solution in the discharge line may be under pressure. Release the pressure from the discharge line before disconnecting plumbing or disassembly of the pump to avoid solution spray.

• Rinse wet ends thor oughly with tap water.

• Each time the pump head is dismantled, replace the diaphragm, O rings, valve gaskets and valve sets with new ones.

Wear part list

# of

Parts

VC•VH•VE•PC•PH•PE•TC

parts

SH FC P6

Estimat-

ed life

14 11

11 13

Valve set

13 12

12 11

11 13

13 12

12 17

Pump

Diaphragm 1

11 13 28 12 28 11 13 28 12 14

Automatic air vent valve set

14 11 13

12 14

11 13

12 14 17

3534 33 30 3431 17

14 11 52

13 12

2 sets

8000

hours

* The high pressure types have a rear diaphragm sheet on the back side of the diaphragm. * Wear part duration varies with the pressure, temperature and characteristics of liquid. * The estimated life is calculated based on the continuous operation with clean water at

ambient temperature.

Wear part replacement

Page 87

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.

Check that liquid comes out from the air vent port and gas/liquid

pressure has been released.

NOTE

The pressure may not be expelled completely as long as liquid does not come out. In this case run the pump until the pressure is released.

* The air vent port is not equipped to the FC. Install an air vent valve on a discharge line

and release the pressure by opening the valve. See page 32.

Valve set replacement

■

Discharge valve set dismantlement/assembly

Necessary tools

• Adjustable w rench or spanner

• 0.9 inch (21mm) box wrench

• A pair of tweezers

*Unﬁx the pump base before work.

Wear part replacement

Maintenance

Page 88

Loosen the ﬁtting nut to remove a discharge tube and an air bleed tube.

Turn the lock nut anticlockwise by

an adjustable wrench and remove the air vent body A.

Remove the air vent body B by the 0.9 inch

(21mm) box wrench.

Air bleed tube

Discharge tube

Air vent body A

Fitting nut

Lock nut

Pull out the valve set by a pair of tweezers.

Wear part replacement

Air vent body B

Page 89

Place a new valve set into the pump head and

screw the air vent body B through the lock nut.

* Be careful not to misarrange the valve set or plac e it

upside down. Otherwise, leakage or ﬂow rate reduc-

tion may result. * Do not forget to ﬁt O rings and gaskets. * Keep the valve set free from dust or foreign matters.

Remount the air vent body A and connect tubes.

■

Suction valve set dismantlement/assembly

NOTE

Be careful not to drop the valve set.

Remove the ﬁtting nut to remove the suction tube.

Air vent body B

Lock nut

Valve set

*VC•VH•VE•PC•PH•PE

14 11

13 12

11 13

12 17

Fitting nut

Suction tube

Remove the ﬁtting by an adjustable wrench or a spanner.

Fitting

Wear part replacement

Maintenance

Page 90

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. Retighten it by a further 1/4 turn with an adjustable wrench or a spanner.

* Be careful not to misarrange the valve set or plac e it

upside down. Otherwise, leakage or ﬂow rate reduc-

tion may result. * Do not forget to ﬁt O rings and gaskets. * Keep the valve set free from dust or foreign matters.

Reconnect the suction tube.

■

Spacer set replacement (Auto degassing type)

Valve set

Fitting

*VC•VH•VE•PC•PH•PE•TC

17 14

11 13

12 11

13 12

Dismantlement/assembly of the discharge and suction valve sets are the same as above.

Loosen the lock nut and remove the ﬁtting adapter.

Loosen the air vent body B and take it out of the pump head. Then

pull out the spacer set.

Place a new spacer set into the pump head.

Screw the air vent body B into the pump head through the lock nut.

* Do not forget to ﬁt O rings and gaskets. * Keep the spacer set free from dust or foreign matters.

Wear part replacement

Air vent

body B

Spacer

Lock nut

Page 91

■

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

adapter.

Fitting adapter

Place a new air vent valve set into the ﬁtting

and then hand-tighten it into the ﬁtting adapter as far as it will go. Retighten the ﬁtting by a further 1/4 turn with a spanner.

* Note the air vent valve set has a mounting direction.

Always mount the depressed end ﬁrst.

Diaphragm replacement

Necessary tools

• Adjustable w rench or spanner

• Hexagon wrench

• Torque wrench

31 3

Air vent valve set

58 57

61 62

Fitting nut

Fitting

3 60 17

Maintenance

NOTE

Pay attention not to loose diaphragm spacers. Always apply a proper number of diaphragm spacers. 0 or a few diaphragm spacers are inserted between the retainer and plunger for the adjustment of diaphragm location. Note that the number of diaphragm spacers varies with pump model.

Wear part replacement

Page 92

Run the pump and set the stroke length to 0%. Then stop the pump.

Loosen the ﬁtting nuts and re-

move a suction tube, a discharge tube and an air bleed tube.

For the auto degassing type, disconnect another air bleed tube from the automatic air vent valve body as well.

Remove the pump head with a hexagon wrench.

Rotate and remove the diaphragm from the plunger (pump shaft).

Air bleed tube

Discharge tube

Suction tube

Pump head

Fitting nut

Slide a retainer and diaphragm

spacer(s) onto the diaphragm screw.

Wear part replacement

Diaphragm spacer

Diaphragm

Plunger

Retainer

Page 93

NOTE

• Fit the retainer to the diaphragm with its round edge 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.

Screw the diaphragm into the plunger as far as it will go.

Run the pump and set the stroke length to 100%. Then stop the

Mating parts

Bracket spacer

pump.

Mount the pump head.

Tighten the pump head ﬁxing bolts evenly to the following torque in diagonal order.

Bracket

Tightening torque

Model code Torque Bolts

09•

EWN-B EWN-B31 22.6 lb-in M4 Hex. socket head bolt EWN-C16•21 19 lb-in M4 Hex. socket head bolt EWN-C31 22.6 lb-in M4 Hex. socket head bol t EWN-C36 22.6 lb-in M5 Hex. socket head bolt *A hexagon wrench can be used for a torque wrench. See page 43.

11•16•21 19 lb-in M4 Hex. socket head bolt

Wear part replacement

Maintenance

Page 94

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

Valve

set*

Diaphragm

spacer

Retainer

Diaphragm

FC type

Drive unit

Pump body

Automatic

air vent type

Control unit

Case gasket

Valve

set*

* Wet end materials and their sizes differ with models. See "Wear part list" on page 86

for detail.

Exploded view

Bracket

Bracket spacer

Fixing screw

Controller case

Page 95

Pump head

■

EWN-[B09•B11•B16•B21•C16•C21][VC•VH•VE•PC•PH•PE•TC]

13 12

26 25

17 14

11 13

12 11

13 12

No. Part names # of parts

1 Pump head 1 3Fitting 1 4 Fitting nut 3 5 Air vent body B 1 6Lock nut 1 7 Diaphragm 1

9Retainer 1 10 Air vent body A 1 11 Valve guide 4 12 Valve seat 4 13 Valve 4 14 Valve gasket 2 17 O ring 2 18 Diaphragm spacer *

Hex. socket head bolt

[PW•SW] 23 Adjusting screw 1 25 O ring 1 26 O ring 1 27 O ring 1 29 Hose stopper 3 30 Hose adaptor 3 31 O ring 3

* The number of diaphragm spacers

varies with pump model.

* For the high pressure types, a rear

diaphragm seat is placed between the parts 7 and 9.

Maintenance

31 30

Exploded view

Page 96

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EWN-[B31•C31•C36][VC•VH•VE•PC•PH•PE•TC]

No. Part names # of parts

14 11 13

12 11

13 12

17 14

11 13

12 11

13 12

26 25

1Pump head 1 3Fitting 1 4Fitting nut 3 5 Air vent body B 1 6 Lock nut 1 7 Diaphragm 1

9Retainer 1 10 Air vent body A 1 11 Valve guide 4 12 Valve seat 4 13 Valve 4 14 Valve gasket 2 17 O ring 2 18 Diaphragm spacer *

19 23 Adjusting screw 1

25 O ring 1 26 O ring 1 27 O ring 1 29 Hose stopper 3 30 Hose adaptor 3 31 O ring 3

* The number of diaphragm spacers

varies with pump model.

Hex. socket head bolt [PW•SW]

Exploded view

31 30

Page 97

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EWN FC

14 11 13

12 14

11 13 12

14 17

17 14

11 13

12 14

11 13

12 14

No. Part names # of parts

1 Pump head 1 3Fitting 2 7 Diaphragm 1

9Retainer 1 11 Valve guide 4 12 Valve seat 4 13 Valve 4 14 Valve gasket 6 17 Gasket 2 18 Diaphragm spacer *

Hex. socket head bolt

[PW•SW]

* The number of diaphragm spacers

varies with pump model.

Exploded view

Maintenance

Page 98

■

EWN-C31 P6-V

No. Part names # of parts

1 Pump head 1 3Fitting 1 4Fitting nut 1 7 Diaphragm 1 9Retainer 1

11 Valve guide 2 12 Valve seat 2 13 Valve 2 14 Valve gasket 4 17 O ring 2

Hex. socket head bolt

[PW•SW] 28 Hos e s t o p p e r 1 29 Fitting spacer 1 30 O ring 1 51 Inlet 1 52 Valve spring 2

* The number of diaphragm spacers

varies with pump model.

Exploded view

Page 99

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EWN SH/SH-H/SH-H2

38 39

41 40

52 53

28 11

13 28 12

28 11

13 28 12 14

28 11

13 28 12

28 11

13 28 12

14 3

No. Part names # of parts

1 Pump head 1 3Fitting 1 7 Diaphragm 1 9Retainer 1

11 Valve guide 4 12 Valve seat 4 13 Valve 4 14 Valve gasket B 2 18 Diaphragm spacer *

Hex. socket head bolt

[PW•SW]

28 Valve gasket A 8

37 Adjusting screw 1 38 Seal nut 1 39 Seal ring 1 40 Seat 1

41 Seat ring 1 51 A ir v en t b ody A 1 52 Gasket 1 53 Air vent body B 1 54 Nut 1 55 Male connector 1

* The number of diaphragm spacers

varies with pump model.

* For the high pressure types, a rear

diaphragm sheet is placed between the parts 7 and 9.

Maintenance

Exploded view

Page 100

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EWN with an Automatic air vent

31 31

14 11 13

12 11

13 12

65 63

14 59 14

26 25

No. Part names # of parts

1Pump head 1 2Bracket 1 3Fitting 2 4 Fitting nut 4 5 Air vent body B 1

6 Lock nut 1

7 Diaphragm 1

9Retainer 1 10 Air vent body A 1 11 Valve guide 4 12 Valve seat 4 13 Valve 4 14 Valve gasket 4 17 O ring 4 18 Diaphragm spacer 1 19 Hex. sock. cap bolt [PW•SW] 4 22 Diaphragm seal 1 23 Adjusting screw 1 24 Name plate 1 25 O ring 1 26 O ring 1 27 O ring 1 28 Bracket spacer 1

29 Hose stopper 4 30 Hose adapter 4

17 14

11 13

12 11

13 12

31 30

31 O ring 4 56 Fitting adapter 1 57 Air vent valve gui de A 1 58 Air vent valve guide B 1 59 Spacer 1 60 Separ ate pin 1 61 Valve 2 62 Valve seat 1 63 Air vent body B 1 64 Lock nut 1 65 O ring 1 66 Air vent fitting 1

100

Exploded view

Walchem EWN Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual