Grundfos DME 8 Installation And Operating Instructions Manual

DME, A (2-48 l/h)

GRUNDFOS INSTRUCTIONS

Installation and operating instructions

GB Declaration of Conformity

We, Grundfos Alldos, declare under our sole responsibility that the

products DME, to which this declaration relates, are in conformity with

these Council directives on the approximation of the laws of the EC

member states:

– Machinery Directive (2006/42/EC).

Standards used: EN 809: 1998, EN ISO 12100-1+A1: 2009,

EN ISO 12100-2+A1: 2009

– Low Voltage Directive (2006/95/EC).

Standard used: EN 60204-1+A1: 2009.

– EMC Directive (2004/108/EC).

Standards used: EN 61000-6-2: 2005, EN 61000-6-4: 2007.

DK Overensstemmelseserklæring

Vi, Grundfos, erklærer under ansvar at produkterne DME som denne

erklæring omhandler, er i overensstemmelse med disse af Rådets

direktiver om indbyrdes tilnærmelse til EF-medlemsstaternes

lovgivning:

– Maskindirektivet (2006/42/EF).

Anvendt standarder: EN 809: 1998, EN ISO 12100-1+A1: 2009,

EN ISO 12100-2+A1: 2009.

– Lavspændingsdirektivet (2006/95/EF).

Anvendt standard: EN 60204-1+A1: 2009.

– EMC-direktivet (2004/108/EF).

Anvendte standarder: EN 61000-6-2: 2005, EN 61000-6-4: 2007.

DE Konformitätserklärung

Wir, Grundfos, erklären in alleiniger Verantwortung, dass die Produkte

DME, auf die sich diese Erklärung bezieht, mit den folgenden Richtlinien

des Rates zur Angleichung der Rechtsvorschriften der EU-

Mitgliedsstaaten übereinstimmen:

– Maschinenrichtlinie (2006/42/EG).

Normen, die verwendet wurden: EN 809: 1998, EN ISO 12100-1+A1:

2009, EN ISO 12100-2+A1: 2009.

– Niederspannungsrichtlinie (2006/95/EG).

Norm, die verwendet wurde: EN 60204-1+A1: 2009.

– EMV-Richtlinie (2004/108/EG).

Normen, die verwendet wurden: EN 61000-6-2: 2005,

EN 61000-6-4: 2007.

GR Δήλωση Συμμόρφωσης

Εμείς, η Grundfos, δηλώνουμε με αποκλειστικά δική μας ευθύνη ότι τα

προϊόντα DME στα οποία αναφέρεται η παρούσα δήλωση,

συμμορφώνονται με τις εξής Οδηγίες του Συμβουλίου περί προσέγγισης

των νομοθεσιών των κρατών μελών της ΕΕ:

– Οδηγία για μηχανήματα (2006/42/EC).

Πρότυπα που χρησιμοποιήθηκαν: EN 809: 1998,

EN ISO 12100-1+A1: 2009, EN ISO 12100-2+A1: 2009.

– Οδηγία χαμηλής τάσης (2006/95/EC).

Πρότυπο που χρησιμοποιήθηκε: EN 60204-1+A1: 2009.

– Οδηγία Ηλεκτρομαγνητικής Συμβατότητας (EMC) (2004/108/EC).

Πρότυπα

που χρησιμοποιήθηκαν: EN 61000-6-2: 2005,

EN 61000-6-4: 2007.

ES Declaración de Conformidad

Nosotros, Grundfos, declaramos bajo nuestra entera responsabilidad

que los productos DME, a los cuales se refiere esta declaración, están

conformes con las Directivas del Consejo en la aproximación de las

leyes de las Estados Miembros del EM:

– Directiva de Maquinaria (2006/42/CE).

Normas aplicadas: EN 809: 1998, EN ISO 12100-1+A1: 2009,

EN ISO 12100-2+A1: 2009.

– Directiva de Baja Tensión (2006/95/CE).

Norma aplicada: EN 60204-1+A1: 2009.

– Directiva EMC (2004/108/CE).

Normas aplicadas: EN 61000-6-2: 2005, EN 61000-6-4: 2007.

FR Déclaration de Conformité

Nous, Grundfos, déclarons sous notre seule responsabilité, que les

produits DME, auxquels se réfère cette déclaration, sont conformes aux

Directives du Conseil concernant le rapprochement des législations des

Etats membres CE relatives aux normes énoncées ci-dessous :

– Directive Machines (2006/42/CE).

Normes utilisées : EN 809 : 1998, EN ISO 12100-1+A1 : 2009,

EN ISO 12100-2+A1 : 2009.

– Directive Basse Tension (2006/95/CE).

Norme utilisée : EN 60204-1+A1: 2009.

– Directive Compatibilité Electromagnétique CEM (2004/108/CE).

Normes utilisées : EN 61000-6-2: 2005, EN 61000-6-4: 2007.

IT Dichiarazione di Conformità

Grundfos dichiara sotto la sua esclusiva responsabilità che i prodotti

DME, ai quali si riferisce questa dichiarazione, sono conformi alle

seguenti direttive del Consiglio riguardanti il riavvicinamento delle

legislazioni degli Stati membri CE:

– Direttiva Macchine (2006/42/CE).

Norme applicate: EN 809: 1998, EN ISO 12100-1+A1: 2009,

EN ISO 12100-2+A1: 2009.

– Direttiva Bassa Tensione (2006/95/CE).

Norma applicata: EN 60204-1+A1: 2009.

– Direttiva EMC (2004/108/CE).

Norme applicate: EN 61000-6-2: 2005, EN 61000-6-4: 2007.

NL Overeenkomstigheidsverklaring

Wij, Grundfos, verklaren geheel onder eigen verantwoordelijkheid dat

de producten DME waarop deze verklaring betrekking heeft, in

overeenstemming zijn met de Richtlijnen van de Raad in zake de

onderlinge aanpassing van de wetgeving van de EG Lidstaten

betreffende:

– Machine Richtlijn (2006/42/EC).

Gebruikte normen: EN 809: 1998, EN ISO 12100-1+A1: 2009,

EN ISO 12100-2+A1: 2009.

– Laagspannings Richtlijn (2006/95/EC).

Gebruikte norm: EN 60204-1+A1: 2009.

– EMC Richtlijn (2004/108/EC).

Gebruikte normen: EN 61000-6-2: 2005, EN 61000-6-4: 2007.

PT Declaração de Conformidade

A Grundfos declara sob sua única responsabilidade que os produtos

DME, aos quais diz respeito esta declaração, estão em conformidade

com as seguintes Directivas do Conselho sobre a aproximação das

legislações dos Estados Membros da CE:

– Directiva Máquinas (2006/42/CE).

Normas utilizadas: EN 809: 1998, EN ISO 12100-1+A1: 2009,

EN ISO 12100-2+A1: 2009.

– Directiva Baixa Tensão (2006/95/CE).

Norma utilizada: EN 60204-1+A1: 2009.

– Directiva EMC (compatibilidade electromagnética) (2004/108/CE).

Normas utilizadas: EN 61000-6-2: 2005, EN 61000-6-4: 2007.

FI Vaatimustenmukaisuusvakuutus

Me, Grundfos, vakuutamme omalla vastuullamme, että tuotteet DME,

joita tämä vakuutus koskee, ovat EY:n jäsenvaltioiden lainsäädännön

yhdenmukaistamiseen tähtäävien Euroopan neuvoston direktiivien

vaatimusten mukaisia seuraavasti:

– Konedirektiivi (2006/42/EY).

Sovellettavat standardit: EN 809: 1998, EN ISO 12100-1+A1: 2009,

EN ISO 12100-2+A1: 2009.

– Pienjännitedirektiivi (2006/95/EY).

Sovellettu standardi: EN 60204-1+A1: 2009.

– EMC-direktiivi (2004/108/EY).

Sovellettavat standardit: EN 61000-6-2: 2005, EN 61000-6-4: 2007.

SE Försäkran om överensstämmelse

Vi, Grundfos, försäkrar under ansvar att produkterna DME, som

omfattas av denna försäkran, är i överensstämmelse med rådets direktiv

om inbördes närmande till EU-medlemsstaternas lagstiftning,

avseende:

– Maskindirektivet (2006/42/EG).

Tillämpade standarder: EN 809: 1998, EN ISO 12100-1+A1: 2009,

EN ISO 12100-2+A1: 2009.

– Lågspänningsdirektivet (2006/95/EG).

Tillämpad standard: EN 60204-1+A1: 2009.

– EMC-direktivet (2004/108/EG).

Tillämpade standarder: EN 61000-6-2: 2005, EN 61000-6-4: 2007.

Pfinztal, 15th July 2010

Ulrich Stemick

Technical Director

ALLDOS Eichler GmbH

Reetzstr. 85, D-76327 Pfinztal, Germany

Person authorised to compile technical file and

empowered to sign the EC declaration of conformity.

2

3

DME

Installation and operating instructions 4

Montage- und Betriebsanleitung 30

Notice d’installation et d’entretien 57

Istruzioni di installazione e funzionamento 83

Instrucciones de instalación y funcionamiento 109

Instruções de instalação e funcionamento 135

Οδηγίες εγκατάστασης και λειτουργίας 161

Installatie- en bedieningsinstructies 187

Monterings- och driftsinstruktion 213

Asennus- ja käyttöohjeet 239

Monterings- og driftsinstruktion 265

FIN

4

CONTENTS

Page

1. General description 4

1.1 Applications 4

1.2 Type key 5

2. Technical data 6

2.1 Mechanical data 6

2.2 Electrical data 6

2.3 Input/output data 6

2.4 Dimensions 7

3. Installation 7

3.1 Safety instructions 7

3.2 Installation environment 7

3.3 Installation of pump 7

3.4 Installation example 8

3.5 Electrical connection 8

3.6 Connection overview 9

4. Functions 10

4.1 Control panel 10

4.2 Start/stop of pump 11

4.3 Priming/venting of pump 11

4.4 Level control 11

4.5 Indicator lights and alarm output 11

4.6 Fieldbus communication 12

4.7 Menu 13

4.8 Operating modes 14

4.9 Manual 14

4.10 Pulse 14

4.11 Analog 14

4.12 Timer 16

4.13 Batch 17

4.14 Anti-cavitation 17

4.15 Capacity limitation 18

4.16 Counters 18

4.17 Resetting 19

4.18 Return 19

4.19 Language 19

4.20 Input setup 20

4.21 Measuring units 21

4.22 Dosing monitoring 22

4.23 Control panel lock 23

5. Start-up 24

6. Calibration 25

6.1 Direct calibration 26

6.2 Indirect calibration 27

6.3 Check calibration 28

7. Maintenance 28

8. Service 28

9. Fault finding chart 29

10. Disposal 29

Before beginning installation procedures,

these installation and operating instruc-

tions should be studied carefully. The in-

stallation and operation should also be in

accordance with local regulations and ac-

cepted codes of good practice.

1. General description

The Grundfos DME dosing pump is a self-priming di-

aphragm pump.

The pump consists of:

•a cabinet incorporating the drive unit and elec-

tronics,

•a dosing head with back plate, diaphragm,

valves, connections and vent valve,

•a control panel incorporating display and buttons.

The control panel can be fitted either to the end or

to the side of the cabinet.

Being equipped with a stepper motor, this dosing

pump is unique in its field. The stepper motor offers

the possibility of varying the capacity by changing

the duration of the dosing stroke.

Furthermore, the motor is controlled in such a way

that the dosing gets as even and constant as possi-

ble, irrespective of the capacity range in which the

pump is operating.

This is carried out as follows:

The speed of the suction stroke is kept constant and

the stroke relatively short, irrespective of the capa-

city. Contrary to conventional pumps, which generate

the dosing stroke as a short pulse, the duration of

the dosing stroke will be as long as possible. Thus,

an even dosing without peak values is ensured. As

the pump is always dosing at full stroke length, it en-

sures the same high accuracy and suction capability,

irrespective of the capacity, which is infinitely varia-

ble in the ratio of 1:1000.

The pump features an LCD display and a user-

friendly control panel which gives access to the

pump functions.

1.1 Applications

The DME dosing pump is designed for handling

chemicals within the following ranges of applications,

among others:

• Drinking water treatment.

• Wastewater treatment.

• Swimming pool water treatment.

• Boiler water treatment.

• Cooling water treatment.

• Process water treatment.

• Washing systems.

5

1.2 Type key

(Cannot be used for pump configuration.)

Example

:

Pump range DME ..

Control variant Code

Standard A

Standard + alarm relay AR

Standard + Profibus AP

Standard + GENIbus AG

Dosing head material Code

Polypropylene PP

PVDF PV

Stainless steel 1.4401 SS

Code Mains plug

F EU (Schuko)

BUSA, CAN

GUK

IAU

ECH

JJP

Code

Connection,

suction/discharge

1 Tubing 6/9

Tubing 4/6

supplied with the pump

2 Tubing 6/9

Tubing 6/12+9/12

supplied with the pump

3 Tubing 4/6

4 Tubing 6/9

5 Tubing 6/12

6 Tubing 9/12

A Threaded Rp 1/4

B Threaded Rp 3/8

E Cementing d.10

F Cementing d.12

Code Valves

1 Standard valve

2 Spring-loaded valve

Valve ball material Code

Ceramics C

Stainless steel 1.4401 SS

Gasket material Code

EPDM E

FKM V

Maximum pressure [bar]

Control panel Code

Front-fitted F

Side-fitted S

Voltage Code

1 x 100-240 V, 50-60 Hz 3

DME 2-18 A-PP/E/C-F-3 1 1E F

6

2. Technical data

2.1 Mechanical data

*

1

Irrespective of counter pressure

*

2

Maximum suction lift 1 metre

2.2 Electrical data

2.3 Input/output data

The pump offers various input and output possibili-

ties, depending on control variant.

DME 2 DME 8 DME 12 DME 19 DME 48

Maximum capacity without anti-cavitation *

1

[l/h] 2.5 7.5 12 18.5 48

Maximum capacity with anti-cavitation *

1

[l/h] 1.8 5.6 9 14.5 37

Maximum pressure [bar] 18 10 6 6.2 2.6

Maximum stroke rate per minute [stroke/min.] 180 180 180 151 151

Maximum suction lift during operation [m] 6

Maximum suction lift when priming with wet valves [m] 1.8 3 3 3 3

Maximum viscosity with spring-loaded valves *

2

[mPas] 500 500 500 500 100

Maximum viscosity without spring-loaded valves *

2

[mPas]

200 200 200 200 100

Diaphragm diameter [mm] 28 38 42.5 55 77

Liquid temperature [°C] 0 to 50

Ambient temperature [°C] 0 to 45

Accuracy of repeatability ±1%

Sound pressure level [dB(A)] <70

DME 2, 8, 12 DME 19, 48

Supply voltage [VAC] 1 x 100-240

Maximum current consumption [A]

at 100 V 0.30 0.36

at 230 V 0.16 0.26

Maximum power consumption P

1

[W] 18 22

Frequency [Hz] 50-60

Enclosure class IP 65

Insulation class B

Supply cable 1.5 m H05RN-F with plug

Signal input

Voltage in level sensor input [VDC] 5

Voltage in pulse input [VDC] 5

Minimum pulse-repetition period [ms] 3.3

Impedance in analog 4-20 mA input [Ω] 250

Maximum loop resistance in pulse signal circuit [Ω] 350

Maximum loop resistance in level signal circuit [Ω] 350

Signal output

Maximum load of alarm relay output, at ohmic load [A] 2

Maximum voltage, alarm relay output [V] 250

7

2.4 Dimensions

See dimensions at the end of these instructions.

All dimensions are in mm.

3. Installation

3.1 Safety instructions

• The liquid is under pressure and may be hazard-

ous.

• When working with chemicals, local safety rules

and regulations must be observed (e.g. wear pro-

tective clothes).

• Before starting work on the dosing pump and sys-

tem, disconnect the electricity supply to the pump,

ensuring that it cannot be accidentally switched

on. Before reconnecting the electricity supply,

make sure that the dosing hose is positioned in

such a way that any chemical left in the dosing

head is not ejected, thereby exposing persons to

danger.

• If the vent valve in the dosing head is used, it must

be connected to a hose which is led back to the

tank.

• When changing a chemical, make sure that the

materials of the dosing pump and system are re-

sistant to the new chemical. If there is any risk of

chemical reaction between the two types of chem-

icals, clean the pump and system thoroughly be-

fore adding the new chemical.

Proceed as follows:

Place the suction tube in water and press the

button until residual chemical has been removed.

Note: When the buttons and are pressed

simultaneously, the pump can be set to run for a

specific number of seconds at maximum capacity.

The remaining number of seconds will appear in

the display. The maximum value is 300 seconds.

3.2 Installation environment

• Exposure to direct sunlight should be avoided.

This applies especially to pumps with plastic dos-

ing heads, as this material can be damaged by

sunlight.

• If the pump is installed outside, an enclosure or

similar protection is required to protect the pump

against rain and similar weathers.

3.3 Installation of pump

• See also the installation example in section 3.4.

• Note: The dosing head may contain water from

the factory test. If a liquid which must not come

into contact with water is to be dosed, it is recom-

mended to let the pump run with another liquid to

remove the water from the dosing head before in-

stallation.

• Note: Tighten the bolts in the dosing head after

2 to 5 operating hours (torque 5 Nm).

• Always install the pump on the supporting foot

with vertical suction and discharge ports.

• Always use suitable tools for the mounting of plas-

tic parts. Never apply unnecessary force.

• Make sure that the dosing pump and system are

designed in such a way that neither system equip-

ment nor buildings are damaged in case of leak-

age from the pump or rupture of hoses/pipes. The

installation of leakage hoses and collecting tanks

is recommended.

• Make sure that the drain hole in the dosing head

points downwards, see fig. 1.

Note: It is important that the drain pipe/hole is not

inserted direct into the tank contents, as gasses

may penetrate into the pump.

Fig. 1

100%

TM01 8420 5099

Drain hole

8

3.4 Installation example

The drawing in fig. 2 shows an installation example.

Fig. 2

3.5 Electrical connection

• The electrical connection of the pump should be

carried out by qualified persons in accordance

with local regulations.

• For electrical data of the pump, see section 2.2.

• Do not lay signal cables, if any, together with

power cables.

TM01 8421 0204

The DME pump can be installed in many different ways. The sketch below shows an example with side-

fitted control panel. The tank is a Grundfos chemical tank with a Grundfos level control unit.

9

3.6 Connection overview

Fig. 3

Control input:

1 = Contact for pulse signal

2 = Contact for external on/off

Level input:

TM01 8422 0603

2

3

1

4

1

3

4

5

1

3

4

5

3

1

4

2

Alarm relay (control variant “AR” only)

Control cable,

see table below

Level cable,

see table below

“NO” black

“NC” blue

“Com” brown

Empty tank

Low level

Number / colour 1 / brown 2 / white 3 / blue 4 / black 5 / grey Description

Function

Manual 2 2

Pulse 1 1

Pulse + external on/off 1 1 + 2 2

Analog – + mA signal

Analog + external on/off 2 2 – + mA signal

Timer + external on/off 2 2

Batch 1 1

Number / colour 1 / brown 2 / white 3 / blue 4 / black

Function

Low level Low level

Empty tank Empty tank

Low level Empty tank Low level + empty tank

Dosing monitoring Dosing monitoring

10

4. Functions

4.1 Control panel

Fig. 4

TM01 8423 0100

ml/h

100%

LCD display,

see section 4.7

Navigation/

settings,

see section 4.7

Menu,

see section 4.7

On/off button,

see section 4.7

Mains connectionM12 connection

level control,

see section 4.4

M12 connection

pulse/analog input,

see section 4.4

Connection

alarm relay/bus.

Control variants

“AR”, “AP” and “AG”,

see sections 4.5 and

4.6

Red

indicator light,

see section 4.5

Green

indicator light,

see section 4.5

Maximum capacity

(priming),

see section 4.3

Navigation/

settings,

see section 4.7

11

4.2 Start/stop of pump

The pump can be started/stopped in two different

ways:

• Locally on the pump control panel.

• By means of an external on/off switch connected

to the pulse input. See connection overview in

section 3.6.

4.3 Priming/venting of pump

The pump control panel incorporates a button.

Press this button if the maximum pump capacity is

required over a short period, e.g. during start-up.

When the button is released, the pump automatically

returns to the previous operating mode.

During priming/venting, it is recommended to let the

pump run without a counter pressure or to loosen the

vent valve by giving it a 1/8 to 1/4 turn.

Note: When the buttons and are pressed si-

multaneously, the pump can be set to run for a spe-

cific number of seconds at maximum capacity. The

remaining number of seconds will appear in the dis-

play. The maximum value is 300 seconds.

4.4 Level control

The pump can be fitted with a level control unit for

monitoring of the chemical level in the tank.

The pump can react to two level signals. The pump

will react differently, depending on the influence on

the individual level sensors.

* Control variant “AR” only.

See section 3.6 for connection of the level control

unit and alarm output.

4.5 Indicator lights and alarm output

The green and red indicator lights on the pump are

used for operating and fault indication.

In control variant “AR”, the pump can activate an ex-

ternal alarm signal by means of a built-in alarm relay.

The alarm signal is activated by means of an internal

potential-free contact.

The functions of the indicator lights and the built-in

alarm relay appear from the table below:

1

Control variant AR only.

2

Requires connection to level sensors.

3

Requires activation of the dosing monitoring

function and connection to a dosing monitor.

Level sensors Pump reaction

Upper sensor

activated

(closed contact)

• Red indicator light is on.

• Pump running.

• Alarm relay activated.*

Lower sensor

activated

(closed contact)

• Red indicator light is on.

• Pump stopped.

• Alarm relay activated.*

100%

Condition

Green

LED

Red

LED

Dis-

play

Alarm

output

1

Pump

running

On Off

Normal

indication

Set to stop

Flash-

ing

Off

Normal

indication

Pump fault Off On EEPROM

Supply

failure

Off Off Off

Pump run-

ning, low

chemical

level

2

On On

Normal

indication

Empty

tank

2

Off On

Normal

indication

Analog

signal

< 2 mA

Off On

Normal

indication

The dosed

quantity is

too small

according

to the sig-

nal from the

dosing

monitor

3

On On

Normal

indication

Overheat-

ing

Off On

MAX.

TEMP.

132

NC NO C

132

NC NO C

1

23

NC NO C

132

NC NO C

1

23

NC NO C

1

23

NC NO C

1

23

NC NO C

1

23

NC NO C

1

23

NC NO C

12

4.6 Fieldbus communication

The pump can be configured for fieldbus applica-

tions.

The following bus types are available:

Separate instructions are supplied with each bus

type.

Control variant Bus type

AP Profibus

AG GENIbus

13

4.7 Menu

The pump features a user-friendly menu which is ac-

tivated by pressing the button. During start-up, all

texts will appear in English language. To select lan-

guage, see section 4.19.

All menu items are described in the following sec-

tions. When appears at a menu item, it means

that this item is activated. By selecting “RETURN”

anywhere in the menu structure, you will return to the

operating display without changes.

Fig. 5

See section 4.9 See section 4.23

See section 4.10 See section 4.17

See section 4.11 See section 4.18

See section 4.12 See section 4.19

See section 4.13 See section 4.15

See section 4.14 See section 4.20

See section 6 See section 4.21

See section 4.16

14

4.8 Operating modes

Note: The displayed l and ml values are only reliable

if the pump has been calibrated to the actual installa-

tion, see section 6.

The pump can run in five different operating modes:

•Manual

•Pulse

•Analog

•Timer (internal batch control)

•Batch (external batch control)

See description in the following sections.

4.9 Manual

The pump is dosing as constantly and evenly as pos-

sible, without any external signals.

Set the quantity to be dosed in l/h or ml/h. The pump

automatically changes over between the measuring

units.

Setting range:

DME 2: 2.5 ml/h - 2.5 (1.8*) l/h

DME 8: 7.5 ml/h - 7.5 (5.6*) l/h

DME 12: 12 ml/h - 12 (9*) l/h

DME 19: 18.5 ml/h - 18.5 (14.5*) l/h

DME 48: 48 ml/h - 48 (37*) l/h

* The figures in brackets indicate the maximum ca-

pacity when the anti-cavitation function is acti-

vated.

Fig. 6

4.10 Pulse

The pump is dosing according to an external pulse

signal, i.e. a water meter with pulse output or a con-

troller.

Set the quantity to be dosed per pulse in ml/pulse.

The pump adjusts its capacity according to two fac-

tors:

• Frequency of external pulses.

• The set quantity per pulse.

Setting range:

DME 2: 0.000018 ml/pulse - 5 ml/pulse

DME 8: 0.000069 ml/pulse - 15 ml/pulse

DME 12: 0.000111 ml/pulse - 24 ml/pulse

DME 19: 0.000204 ml/pulse - 37 ml/pulse

DME 48: 0.00530 ml/pulse - 96 ml/pulse

Fig. 7

If the set quantity per pulse multiplied by the pulse

frequency exceeds the pump capacity, the pump will

run at maximum capacity. Excess pulses will be ig-

nored and the “actual capacity” display will flash.

4.11 Analog

The pump is dosing according to an external analog

signal. The dosed quantity is proportional to the input

value in mA.

4-20 (default): 4 mA = 0%.

20 mA = 100%.

20-4: 4 mA = 100%.

20 mA = 0%.

0-20: 0 mA = 0%.

20 mA = 100%.

20-0: 0 mA = 100%.

20 mA = 0%.

See fig. 8.

The capacity limitation will influence the capacity.

100% corresponds to the maximum capacity of the

pump or the set maximum capacity, see section

4.15.

Fig. 8

Set value

TM02 4498 1102

Set quantity in

ml/pulse

Actual capacity

in ml/h or l/h

0 4 8 12 16 20

0

20

40

60

80

100

4-20 mA

0-20 mA

[mA]

[%]

15

Fig. 9

If 4-20 mA or 20-4 mA is selected and the signal falls

below 2 mA, the pump will indicate a fault. This situa-

tion occurs if the connection is interrupted, for in-

stance if the wire is damaged.

Change the analog mode as illustrated in fig. 10:

Fig. 10

Value

according to

analog signal

Use the buttons

for navigation

16

4.12 Timer

The pump is dosing the set quantity in batches at the

maximum capacity or the set maximum capacity, see

section 4.15.

The time until the first dosing “NX” and the following

sequences “IN” can be set in minutes, hours and

days. The maximum time limit is 9 days, 23 hours

and 59 minutes (9:23:59). The lowest acceptable

value is 1 minute.

The internal timer continues even

if the pump is stopped by means of the on/off button,

empty tank or stop signal, see fig. 11.

During operation, “NX” will always count down from

“IN” to zero. In this way, the remaining time until the

next batch can always be read.

“IN” must be higher than the time required to perform

one batch. If “IN” is lower, the next batch will be ig-

nored.

In case of supply failure, the set quantity to be

dosed, the “IN” time and the remaining “NX” time are

stored. When the supply is reconnected, the pump

will start up with the “NX” time at the time of the sup-

ply failure. In this way, the timer cycle will continue,

but it has been delayed by the duration of the supply

failure.

Fig. 11

Setting range:

DME 2: 0.23 ml/batch - 5 l/batch

DME 8: 0.69 ml/batch - 15 l/batch

DME 12: 1.11 ml/batch - 24 l/batch

DME 19: 2.04 ml/batch - 37 l/batch

DME 48: 5.3 ml/batch - 96 l/batch

Only values corresponding to complete dosing

strokes (according to the calibration factor) can be

selected.

Example: If the calibration factor is 23.3 (= 0.233 ml/

stroke), the minimum settable value in timer or batch

mode will be 0.233 ml -> the next will be 0.466 ml ->

the next will be 0.699 ml, etc.

These steps will continue up to a value correspond-

ing to 100 dosing strokes. Above this value, the set-

ting range has standard steps as in other operating

modes.

If the calibration factor is changed after setting of

timer or batch mode, the pump will automatically re-

calculate a new amount of dosing strokes per batch

and change the display value to the nearest possible

value compared to the first one set.

Fig. 12

TM01 8942 0900

NX

IN

Quantity per batch

Set quantity

per batch

Set IN value

in minutes

Set IN value

in hours

Set IN value

in days

Set NX value

in hours

Set NX value

in minutes

Set NX value

in days

17

4.13 Batch

The pump is dosing the set quantity in batches at the

maximum capacity or the set maximum capacity, see

section 4.15.

The quantity is dosed every time the pump receives

an external pulse.

If the pump receives new pulses before the previous

batch is performed, these pulses will be ignored.

Fig. 13

The setting range is the same as for Timer, see sec-

tion 4.12.

Fig. 14

4.14 Anti-cavitation

The pump features an anti-cavitation function. When

this function is selected, the pump extends and

smooths its suction stroke, resulting in softer prim-

ing.

The anti-cavitation function is used:

• when pumping liquids of high viscosity,

• in the case of a long suction tube and

• in the case of a high suction lift.

The maximum pump capacity is reduced when this

function is selected. See section 2.1 Mechanical

data.

Fig. 15

TM01 8947 0900

Pulse Pulse

Quantity per batch

Set value

per batch

Operating display

18

4.15 Capacity limitation

This function offers the possibility of reducing the

maximum pump capacity (MAX CAP). It influences

the functions in which the pump is normally operating

at maximum capacity.

Under normal operating conditions, the pump cannot

operate at a capacity which is higher than the one

stated in the display. This does not apply to the max-

imum capacity button , see section 4.3.

Fig. 16

4.16 Counters

The pump can display “non-resettable” counters for:

•“QUANTITY”

Accumulated value of dosed quantity in litres or

US gallons.

•“STROKES”

Accumulated number of dosing strokes.

•“HOURS”

Accumulated number of operating hours.

•“POWER ON”

Accumulated number of times the electricity sup-

ply has been switched on.

Fig. 17

100%

Set maximum

capacity

Operating display

Total number

of strokes

Total number

of operating

hours

Total number

of starts

Total dosed

quantity

19

4.17 Resetting

When “DEFAULT” is activated, the pump will return

to the factory settings.

Note: The calibration is also set back to the default

setting. This means that a new calibration is required

when the “DEFAULT” function has been used.

Fig. 18

4.18 Return

Fig. 19

The “RETURN” function makes it possible to return

from any level in the menu to the operating display

without changes after the menu functions have been

used.

4.19 Language

The display text can be displayed in one of the fol-

lowing languages:

• English

•German

•French

•Italian

• Spanish

• Portuguese

•Dutch

• Swedish

• Finnish

• Danish

•Czech

•Slovak

•Polish

• Russian

Operating display Operating display

without changes

20

Fig. 20

4.20 Input setup

Fig. 21 shows all possible settings.

The level and stop inputs can be changed from NO

(normally open) to NC (normally closed) function. If

changed, the inputs must be short-circuited in nor-

mal operation.

For the analog input, one of the following signal

types can be selected:

• 4-20 mA (default),

• 20-4 mA,

• 0-20 mA,

• 20-0 mA.

Grundfos DME 8 Installation And Operating Instructions Manual

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