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Argentina

Bombas GRUNDFOS de Argentina S.A.
Ruta Panamericana km. 37.500 Centro 
Industrial Garin
1619 - Garin Pcia. de B.A.
Phone: +54-3327 414 444
Telefax: +54-3327 411 111

Australia

GRUNDFOS Pumps Pty. Ltd. 
P.O. Box 2040 
Regency Park 
South Australia 5942 
Phone: +61-8-8461-4611 
Telefax: +61-8-8340 0155 

Austria

GRUNDFOS Pumpen Vertrieb Ges.m.b.H.
Grundfosstraße 2 
A-5082 Grödig/Salzburg 
Tel.: +43-6246-883-0 
Telefax: +43-6246-883-30 

Belgium

N.V. GRUNDFOS Bellux S.A. 
Boomsesteenweg 81-83 
B-2630 Aartselaar 
Tél.: +32-3-870 7300 
Télécopie: +32-3-870 7301

Belarus

Представительство

 

ГРУНДФОС

 

в

 

Минске

220125, 

Минск

ул

Шафарнянская

, 11, 

оф

. 56

Тел

.: +7 (375 17) 286 39 72, 286 39 73

Факс

: +7 (375 17) 286 39 71

E-mail: [email protected]

Bosnia/Herzegovina

GRUNDFOS Sarajevo
Trg Heroja 16,
BiH-71000 Sarajevo
Phone: +387 33 713 290
Telefax: +387 33 659 079
e-mail: [email protected]

Brazil

BOMBAS GRUNDFOS DO BRASIL
Av. Humberto de Alencar Castelo Branco, 
630
CEP 09850 - 300
São Bernardo do Campo - SP
Phone: +55-11 4393 5533
Telefax: +55-11 4343 5015

Bulgaria

Grundfos Bulgaria EOOD
Slatina District
Iztochna Tangenta street no. 100
BG - 1592 Sofia
Tel. +359 2 49 22 200
Fax. +359 2 49 22 201
email: [email protected]

Canada

GRUNDFOS Canada Inc. 
2941 Brighton Road 
Oakville, Ontario 
L6H 6C9 
Phone: +1-905 829 9533 
Telefax: +1-905 829 9512 

China

Grundfos Alldos
Dosing & Disinfection

ALLDOS (Shanghai) Water Technology 
Co. Ltd.
West Unit, 1 Floor, No. 2 Building (T 4-2)
278 Jinhu Road, Jin Qiao Export 
Processing Zone
Pudong New Area 
Shanghai, 201206
Phone: +86 21 5055 1012
Telefax: +86 21 5032 0596
E-mail: [email protected] 

China

GRUNDFOS Pumps (Shanghai) Co. Ltd.
10F The Hub, No. 33 Suhong Road
Minhang District
Shanghai 201106
PRC
Phone: +86-21 6122 5222 
Telefax: +86-21 6122 5333

COLOMBIA

GRUNDFOS Colombia S.A.S.
Km 1.5 vía Siberia-Cota Conj. Potrero 
Chico,
Parque Empresarial Arcos de Cota Bod. 
1A.
Cota, Cundinamarca
Phone: +57(1)-2913444
Telefax: +57(1)-8764586

Croatia

GRUNDFOS CROATIA d.o.o.
Cebini 37, Buzin
HR-10010 Zagreb
Phone: +385 1 6595 400 
Telefax: +385 1 6595 499
www.hr.grundfos.com

GRUNDFOS Sales Czechia and 
Slovakia s.r.o.

Č

apkovského 21

779 00 Olomouc
Phone: +420-585-716 111

Denmark

GRUNDFOS DK A/S 
Martin Bachs Vej 3 
DK-8850  Bjerringbro 
Tlf.: +45-87 50 50 50 
Telefax: +45-87 50 51 51 
E-mail: [email protected]
www.grundfos.com/DK

Estonia

GRUNDFOS Pumps Eesti OÜ
Peterburi tee 92G
11415 Tallinn
Tel: + 372 606 1690
Fax: + 372 606 1691

Finland

OY GRUNDFOS Pumput AB 
Trukkikuja 1
FI-01360 Vantaa   
Phone: +358-(0)207 889 500

France

Pompes GRUNDFOS Distribution S.A. 
Parc d’Activités de Chesnes 
57, rue de Malacombe 
F-38290 St. Quentin Fallavier (Lyon) 
Tél.: +33-4 74 82 15 15 
Télécopie: +33-4 74 94 10 51 

Germany

GRUNDFOS Water Treatment GmbH
Reetzstraße 85
D-76327 Pfinztal (Söllingen)
Tel.: +49 7240 61-0 
Telefax: +49 7240 61-177
E-mail: [email protected] 

Germany

GRUNDFOS GMBH
Schlüterstr. 33
40699 Erkrath
Tel.: +49-(0) 211 929 69-0 
Telefax: +49-(0) 211 929 69-3799
E-mail: [email protected]
Service in Deutschland:
E-mail: [email protected]

Greece

GRUNDFOS Hellas A.E.B.E. 
20th km. Athinon-Markopoulou Av. 
P.O. Box 71 
GR-19002 Peania 
Phone: +0030-210-66 83 400 
Telefax: +0030-210-66 46 273

Hong Kong

GRUNDFOS Pumps (Hong Kong) Ltd. 
Unit 1, Ground floor 
Siu Wai Industrial Centre 
29-33 Wing Hong Street & 
68 King Lam Street, Cheung Sha Wan 
Kowloon 
Phone: +852-27861706 / 27861741 
Telefax: +852-27858664 

Hungary

GRUNDFOS Hungária Kft.
Tópark u. 8
H-2045 Törökbálint, 
Phone: +36-23 511 110
Telefax: +36-23 511 111

India

GRUNDFOS Pumps India Private Limited
118 Old Mahabalipuram Road
Thoraipakkam
Chennai 600 097
Phone: +91-44 4596 6800

Indonesia

PT. GRUNDFOS POMPA
Graha Intirub Lt. 2 & 3
Jln. Cililitan Besar No.454. Makasar, 
Jakarta Timur
ID-Jakarta 13650
Phone: +62 21-469-51900
Telefax: +62 21-460 6910 / 460 6901

Ireland

GRUNDFOS (Ireland) Ltd. 
Unit A, Merrywell Business Park
Ballymount Road Lower
Dublin 12 
Phone: +353-1-4089 800 
Telefax: +353-1-4089 830 

Italy

GRUNDFOS Pompe Italia S.r.l. 
Via Gran Sasso 4
I-20060 Truccazzano (Milano)
Tel.: +39-02-95838112 
Telefax: +39-02-95309290 / 95838461 

Japan

GRUNDFOS Pumps K.K.
1-2-3, Shin-Miyakoda, Kita-ku
Hamamatsu
431-2103 Japan
Phone: +81 53 428 4760
Telefax: +81 53 428 5005

Korea

GRUNDFOS Pumps Korea Ltd.
6th Floor, Aju Building 679-5
Yeoksam-dong, Kangnam-ku, 135-916
Seoul, Korea
Phone: +82-2-5317 600
Telefax: +82-2-5633 725

Latvia

SIA GRUNDFOS Pumps Latvia 
Deglava biznesa centrs
Augusta Deglava iel

ā

 60, LV-1035, R

ī

ga,

T

ā

lr.: + 371 714 9640, 7 149 641

Fakss: + 371 914 9646

Lithuania

GRUNDFOS Pumps UAB
Smolensko g. 6
LT-03201 Vilnius
Tel: + 370 52 395 430
Fax: + 370 52 395 431

Malaysia

GRUNDFOS Pumps Sdn. Bhd.
7 Jalan Peguam U1/25
Glenmarie Industrial Park
40150 Shah Alam
Selangor 
Phone: +60-3-5569 2922
Telefax: +60-3-5569 2866

Mexico

Bombas GRUNDFOS de México S.A. de 
C.V. 
Boulevard TLC No. 15
Parque Industrial Stiva Aeropuerto
Apodaca, N.L. 66600
Phone: +52-81-8144 4000 
Telefax: +52-81-8144 4010

Netherlands

GRUNDFOS Netherlands
Veluwezoom 35
1326 AE Almere
Postbus 22015 
1302 CA ALMERE 
Tel.: +31-88-478 6336 
Telefax: +31-88-478 6332 
E-mail: [email protected]

New Zealand

GRUNDFOS Pumps NZ Ltd.
17 Beatrice Tinsley Crescent
North Harbour Industrial Estate
Albany, Auckland
Phone: +64-9-415 3240
Telefax: +64-9-415 3250

Norway

GRUNDFOS Pumper A/S 
Strømsveien 344 
Postboks 235, Leirdal 
N-1011 Oslo 
Tlf.: +47-22 90 47 00 
Telefax: +47-22 32 21 50 

Poland

GRUNDFOS Pompy Sp. z o.o.
ul. Klonowa 23
Baranowo k. Poznania
PL-62-081 Prze

ź

mierowo

Tel: (+48-61) 650 13 00
Fax: (+48-61) 650 13 50

Portugal

Bombas GRUNDFOS Portugal, S.A. 
Rua Calvet de Magalhães, 241
Apartado 1079
P-2770-153 Paço de Arcos
Tel.: +351-21-440 76 00
Telefax: +351-21-440 76 90

Romania

GRUNDFOS Pompe România SRL
Bd. Biruintei, nr 103 
Pantelimon county Ilfov
Phone: +40 21 200 4100
Telefax: +40 21 200 4101
E-mail: [email protected]

Russia

ООО

 

Грундфос

ул

Школьная

, 39-41

Москва

, RU-109544, Russia

Тел

. (+7) 495 737 30 00, 564 8800

Факс

 (+7) 495 737 75 36, 564 8811

E-mail [email protected]

Serbia 

GRUNDFOS Predstavništvo Beograd
Dr. Milutina Ivkovi

ć

a 2a/29

YU-11000 Beograd 
Phone: +381 11 26 47 877 / 11 26 47 496
Telefax: +381 11 26 48 340

Singapore

GRUNDFOS (Singapore) Pte. Ltd. 
25 Jalan Tukang 
Singapore 619264 
Phone: +65-6681 9688 
Telefax: +65-6681 9689

Slovakia

GRUNDFOS s.r.o.
Prievozská 4D 
821 09 BRATISLAVA 
Phona: +421 2 5020 1426
sk.grundfos.com

Slovenia

GRUNDFOS LJUBLJANA, d.o.o.
Leskoškova 9e, 1122 Ljubljana
Phone: +386 (0) 1 568 06 10
Telefax: +386 (0)1 568 0619
E-mail: [email protected]

South Africa

Grundfos (PTY) Ltd.
Corner Mountjoy and George Allen Roads
Wilbart Ext. 2
Bedfordview 2008
Phone: (+27) 11 579 4800
Fax: (+27) 11 455 6066
E-mail: [email protected]

Spain

Bombas GRUNDFOS España S.A. 
Camino de la Fuentecilla, s/n 
E-28110 Algete (Madrid) 
Tel.: +34-91-848 8800 
Telefax: +34-91-628 0465 

Sweden

GRUNDFOS AB 
(Box 333) Lunnagårdsgatan 6 
431 24 Mölndal 
Tel.: +46 31 332 23 000 
Telefax: +46 31-331 94 60 

Switzerland

GRUNDFOS ALLDOS International AG
Schönmattstraße 4  
CH-4153 Reinach
Tel.: +41-61-717 5555
Telefax: +41-61-717 5500
E-mail: [email protected]

Switzerland

GRUNDFOS Pumpen AG 
Bruggacherstrasse 10 
CH-8117 Fällanden/ZH 
Tel.: +41-44-806 8111 
Telefax: +41-44-806 8115 

Taiwan

GRUNDFOS Pumps (Taiwan) Ltd. 
7 Floor, 219 Min-Chuan Road 
Taichung, Taiwan, R.O.C. 
Phone: +886-4-2305 0868
Telefax: +886-4-2305 0878

Thailand

GRUNDFOS (Thailand) Ltd. 
92 Chaloem Phrakiat Rama 9 Road,
Dokmai, Pravej, Bangkok 10250
Phone: +66-2-725 8999
Telefax: +66-2-725 8998

Turkey

GRUNDFOS POMPA San. ve Tic. Ltd. Sti.
Gebze Organize Sanayi Bölgesi 
Ihsan dede Caddesi,
2. yol 200. Sokak No. 204
41490 Gebze/ Kocaeli
Phone: +90 - 262-679 7979
Telefax: +90 - 262-679 7905
E-mail: [email protected]

Ukraine

Бізнес

 

Центр

 

Європа

Столичне

 

шосе

, 103

м

Київ

, 03131, 

Україна

 

Телефон

: (+38 044) 237 04 00 

Факс

.: (+38 044) 237 04 01

E-mail: [email protected]

United Arab Emirates

GRUNDFOS Gulf Distribution
P.O. Box 16768
Jebel Ali Free Zone
Dubai
Phone: +971-4- 8815 166
Telefax: +971-4-8815 136

United Kingdom

GRUNDFOS Pumps Ltd. 
Grovebury Road 
Leighton Buzzard/Beds. LU7 4TL 
Phone: +44-1525-850000 
Telefax: +44-1525-850011 

U.S.A.

GRUNDFOS Pumps Corporation 
17100 West 118th Terrace
Olathe, Kansas 66061
Phone: +1-913-227-3400 
Telefax: +1-913-227-3500 

Uzbekistan

Grundfos Tashkent, Uzbekistan The 
Representative Office of Grundfos 
Kazakhstan in Uzbekistan 
38a, Oybek street, Tashkent 

Телефон

: (+998) 71 150 3290 / 71 150 

3291

Факс

: (+998) 71 150 3292

Addresses revised 14.03.2018

Summary of Contents for DMH 25 Series

Page 1: ...DMH 25X Dosing pump Installation and operating instructions GRUNDFOS INSTRUCTIONS Further languages http net grundfos com qr i 96771725 ...

Page 2: ...tion and discharge lines 22 7 Electrical connections 23 7 1 Electric servomotor optional 23 7 2 Electronic preselection counter optional 23 7 3 Electrically heated dosing head optional 23 7 4 Diaphragm controller optional 23 7 5 Connecting the power supply cable 24 8 Start up shutdown 24 8 1 Initial start up subsequent start up 24 8 2 Start up subsequent start up of DMH 251 252 and 253 25 8 3 Star...

Page 3: ...Hazardous hot or cold parts on the pump must be protected to prevent accidental contact Leakages of dangerous substances e g hot toxic must be disposed of in a way that is not harmful to the personnel or the environment Legal regulations must be observed Damage caused by electrical energy must be prevented for more details see for example the regulations of the VDE and the local electricity supply...

Page 4: ...m Systems in which dosing pumps are installed must be designed in such a way that the safety of the entire system is still ensured following a failure of the dosing pump Provide the relevant monitoring and control functions for this 3 Technical data 3 1 Identification Fig 1 DMH nameplate Note Explosion proof pumps are identified from the pump and motor nameplates An EC declaration of conformity is...

Page 5: ...P Servomotor 1 x 24 V 50 60 Hz supply 1 kΩ potentiometer control Dosing head variant PP Polypropylene PV PVDF polyvinylidene fluoride PVC Polyvinyl chloride SS Stainless steel 1 4571 EN 10027 2 316Ti AISI Y Stainless steel Alloy C 4 2 4610 EN 10027 2 PP L PP with diaphragm leakage detection PV L PVDF with diaphragm leakage detection PVC L PVC with diaphragm leakage detection SS L SS with diaphragm...

Page 6: ...Piping 20 25 4 Tubing 6 9 mm 6 Tubing 9 12 B9 G 5 4 hose tubing 19 27 Q Tubing 19 27 25 34 S Tubing 0 375 0 5 V G 5 8 pipe threaded NPT 1 4 female SS A9 G 5 8 pipe threaded NPT 1 2 male PVC PVDF A7 G 5 4 pipe threaded NPT 3 4 male PVC PVDF A3 G 5 4 pipe threaded NPT 3 4 female P Flange 1 1 4 ANSI C3 Threaded 1 1 4 Rp with flange DN32 Mains plug No plug for 3 AC motors X No plug for 1 AC motors and...

Page 7: ...3 10 13 10 63 16 10 75 25 10 126 DMH 19 10 DMH 19 10 19 10 19 10 96 23 10 115 DMH 24 10 DMH 24 10 24 10 24 10 120 DMH 2 3 16 DMH 2 3 16 2 3 16 2 3 16 14 2 8 16 17 4 5 16 29 DMH 4 9 16 DMH 4 9 16 4 9 16 4 9 16 29 5 9 16 35 9 8 16 58 DMH 12 16 DMH 12 16 12 16 12 16 63 14 16 75 24 16 126 DMH 18 16 DMH 18 16 18 16 18 16 96 22 16 115 DMH 23 16 DMH 23 16 23 16 23 16 120 DMH 2 2 25 DMH 2 2 25 2 2 25 2 2 ...

Page 8: ...150 DMH 332 10 DMH 332 10 332 10 332 10 92 398 10 110 DMH 403 10 DMH 403 10 403 10 403 10 112 484 10 134 DMH 550 10 DMH 550 10 550 10 550 10 153 DMH 257 DMH 220 10 DMH 220 10 220 10 220 10 28 264 10 34 440 10 56 DMH 440 10 DMH 440 10 440 10 440 10 56 528 10 67 880 10 112 DMH 575 10 DMH 575 10 575 10 575 10 73 690 10 88 1150 10 146 DMH 750 4 DMH 750 4 750 4 750 4 73 900 4 88 1500 4 146 DMH 770 10 D...

Page 9: ...10 50 10 10 DMH 102 10 DMH 102 10 102 10 10 DMH 143 10 DMH 143 10 143 10 10 DMH 175 10 DMH 175 10 175 10 10 DMH 213 10 DMH 213 10 213 10 10 DMH 291 10 DMH 291 10 291 10 10 DMH 46 16 DMH 46 16 46 16 16 DMH 97 16 DMH 97 16 97 16 16 DMH 136 16 DMH 136 16 136 16 16 DMH 166 16 DMH 166 16 166 16 16 DMH 202 16 DMH 202 16 202 16 16 DMH 276 16 DMH 276 16 276 16 16 DMH 255 DMH 194 10 DMH 194 10 194 10 10 DM...

Page 10: ...d 3 8 Power supply Power supply for AC voltage Maximum permissible mains impedance 0 084 j 0 084 Ohm testing according to DIN EN 61000 3 11 These details apply to 50 Hz 3 9 Ambient and operating conditions Permissible air humidity max relative humidity 70 at 40 C 90 at 35 C 3 9 1 DMH with motor labelled for coolant temperature 20 C Tamb 40 C Permissible ambient temperature 0 C standard to 40 C for...

Page 11: ...If the pump has been used for such substances the pump must be cleaned before it is returned If proper cleaning is not possible all relevant information about the chemical must be provided If the above is not fulfilled Grundfos Water Treatment can refuse to accept the pump for service Possible costs of returning the pump are paid by the customer The safety declaration can be found at the end of th...

Page 12: ...e stroke and seals the stroke area from the drive area The hydraulic excursion of the solid PTFE diaphragm Q displaces an equivalent volume of dosing medium from the dosing head 2 into the discharge line With the suction stroke the piston creates a low pressure which propagates in the dosing head the ball valve 3b on the dosing side closes and the dosing medium flows through the suction valve 3a i...

Page 13: ...English GB 13 Fig 4 DMH 254 Fig 5 DMH 255 TM03 6450 4506 TM03 6451 4506 1p F L M 3b 3a 9p 3p 2p 5p 6p 2 Q 4p 1p F L M 3b 3a 9p 3p 2p 5p 4p 2 Q 6p ...

Page 14: ...ng diaphragm oscillates freely in the dosing head and cannot be overstretched due to a fault in the dosing system since the diaphragm protection valve closes if such a fault occurs TM03 6452 4506 1p F L M 3b 3a 9p 3p 2p 5p 6p 2 Q 7p Pos Components 1p Motor 2p Worm gearing 3p Eccentric 4p Recuperating spring not with drive size 3 5p Sliding plug 6p Piston 7p Crank M Combined overpressure and degass...

Page 15: ... hydraulically separated equilibrium between the valve and diaphragm gap the pressure gauge indicates 0 when the pump is running and when it is stopped If one of these diaphragms breaks the dosing or hydraulic medium penetrates into the gap between the diaphragms and when the ball is removed into the valve The system pressure is therefore impinged on the valve and the contact pressure gauge is act...

Page 16: ... mm TM03 6454 1612 Z1 d b g j c n k f m h a e k 9mm Pos Description Z1 For double pump motor turned by 180 Pump type a b c d e f g h j k n m DMH 251 345 336 98 192 160 152 86 432 16 116 118 180 DMH 252 345 336 98 192 160 152 86 432 16 116 118 180 DMH 253 368 336 98 192 179 152 86 472 13 124 118 180 ...

Page 17: ... h a e k 9mm Pos Description Z1 For double pump motor turned by 180 fx mx For double pumps Pump type a b c d e f fx g h j k n m mx DMH 254 436 492 156 252 207 185 260 126 718 10 185 180 225 300 DMH 255 510 492 156 254 228 185 260 126 869 10 253 180 225 300 DMH 257 589 553 170 274 280 241 333 129 980 25 262 195 290 382 ...

Page 18: ...DMH 251 3 5 3 1 2 9 DMH 252 6 4 6 3 DMH 253 11 3 DMH 254 31 6 30 DMH 255 60 DMH 257 171 131 Warning Observe the chemical manufacturer s safety instructions when handling chemicals Make sure that the pump is suitable for the actual dosing medium Caution The resistance of the parts that come into contact with the media depends on the media media temperature and operating pressure Ensure that parts i...

Page 19: ...6 14 DN 8 8 DMH 4 9 16 29 DN 8 8 DMH 12 16 63 DN 8 3 DMH 18 16 96 DN 8 1 5 DMH 23 16 120 DN 8 1 DMH 2 2 25 14 DN 8 8 DMH 4 5 25 29 DN 8 8 DMH 11 25 63 DN 8 3 DMH 17 25 96 DN 8 1 5 DMH 21 25 120 DN 8 1 DMH 252 DMH 11 10 29 DN 8 8 DMH 24 10 63 DN 8 2 DMH 37 10 96 DN 8 1 DMH 46 10 120 DN 8 1 DMH 10 16 29 DN 8 8 DMH 23 16 63 DN 8 2 DMH 36 16 96 DN 8 1 DMH 45 16 120 DN 8 1 DMH 54 16 144 DN 8 1 DMH 253 ...

Page 20: ...n TM03 6296 4506 1i 2i 3i 4i 5i 6i 7i 9i 10i 8i max 1m Max 1 m Pos Components 1i Dosing tank 2i Electric agitator 3i Extraction device 4i Suction pulsation damper 5i Dosing pump 6i Relief valve 7i Pressure loading valve 8i Pulsation damper 9i Measuring glass 10i Injection unit ...

Page 21: ...n damper 4i immediately before the pump suction valve Fig 14 Installation with suction side pulsation damper Note for discharge side installation Depending on the dosing flow and the line length it may be necessary to install a properly sized pulsation damper 4i on the discharge side Fig 15 Installation with discharge side pulsation damper For degassing and viscous media flooded suction Install a ...

Page 22: ... DN 20 pipe lines Depending on the pipe material and connection glue the pipe PVC weld it PP PVDF or stainless steel or press it in stainless steel Fit the gasket Screw the pipe on the valve using the union nut Fig 20 Connection of DN 20 pipe lines Connection of DN 32 pipe lines Depending on the pipe material fit the pipe to the welding neck flange and weld it stainless steel or insert it into the...

Page 23: ...7 4 Diaphragm controller optional Fig 25 Diaphragm controller TM03 6459 4506 Pos Components 2f Dosing head liquid heated 2f1 Hose nipple DN 10 connection Warning Electrical connections must only be carried out by qualified personnel Disconnect the power supply before connecting the power supply cable and the relay contacts Observe the local safety regulations The pump housing must only be opened b...

Page 24: ...ion and the pump must be labelled clearly e g by labelling the socket outlet Caution The pump can be automatically started by connecting the power supply Warning The pump must be connected to an external clearly labelled mains switch with a minimum contact gap of 3 mm in all poles Warning The specified enclosure class can only be ensured if the power supply cable is connected with the same degree ...

Page 25: ...heck the oil level and add oil if necessary Refit the oil filling screw F The pump is now ready for operation TM03 6462 4506 Pos Components 1q Dosing head screws 2 Dosing head 3b Discharge valve E Degassing valve F Oil filling screw with dipstick L Stroke length adjustment knob 1l Cover for stroke length adjustment knob M Pressure relief valve Warning Risk of injury caused by squirting oil Oil may...

Page 26: ... the oil deaeration when the pump is running Do not completely unscrew the oil deaeration screw Wear protective clothing gloves and goggles when working on the dosing head connections or lines Note Rod length of oil dipstick 35 mm Immersion depth to marking approx 5 mm Note Check the oil level at least every two weeks and add oil if necessary Only use original Grundfos gear oil For product numbers...

Page 27: ...it from the power supply 2 Depressurise the system 3 Take suitable steps to ensure that the returning dosing medium is safely collected 4 Carefully remove all lines 5 Uninstall the pump 8 7 2 Cleaning 1 Rinse all parts that have come into contact with the medium very carefully lines valves dosing head diaphragm 2 Remove any trace of chemicals from the pump housing 8 7 3 Storage Storage of the pump...

Page 28: ...ced into the valve thereby causing an error to occur Checks after a diaphragm leakage detection 1 Briefly open the deaeration screw 2u and then close it again 2 Switch on the pump 3 If after a short period of time a diaphragm leakage is detected again a diaphragm has broken Fig 32 Dosing head with double diaphragm Caution Before switching on the pump check that it is installed correctly See sectio...

Page 29: ...ing loaded optional DN 32 valve for 60 Hz operation suction side only with adapter Flange connection Stainless steel or plastic Clean the suction and discharge valves as follows 1 Unscrew the valves 2 Unscrew the screw parts and valve set using round pliers 3 Dismantle the inner part seat O ring balls ball cages and if present spring 4 Clean all parts Replace faulty parts by new ones 5 Re assemble...

Page 30: ... dosing head connections or lines The dosing diaphragm should be replaced with each gear oil change Before removing the dosing head valves and lines empty any remaining medium in the dosing head into a drip tray by carefully unscrewing the suction valve Note Only use original Grundfos gear oil For product numbers see Service kit catalogue on www grundfos com Pump type Version Description DMH 251 S...

Page 31: ...arts 3q 5q in the correct order as is shown in the diagrams the clamping sleeves 6q are used for centring purposes Fig 40 Diaphragm on dosing head side Note See section 8 Start up shutdown for subsequent start up Caution Risk of leaking oil and damage caused by oil loss For each oil change a new flat gasket 1b must be fitted Caution After initial start up and after each time the diaphragm is chang...

Page 32: ...sary 2 Refit the oil filling screw F Torques Caution The paraffin oil between the diaphragms Q is connected via the clamping sleeves 6q to the contact pressure gauge S in order to fill and activate the diaphragm leakage detection The oil is able to pass between the diaphragms through the slits in the clamping sleeves and the slits in the intermediate disk The clamping sleeves 6q must therefore be ...

Page 33: ...l non return valve T 5 Screw the contact pressure gauge S and connection piece U back on 6 For pumps and pressure gauges in explosion proof version screw the earth cable 4u back on Note Only clean the ball non return valve after a diaphragm breakage TM03 6453 4506 Pos Components S Contact pressure gauge 5s Union nut 6s Contact output T Ball non return valve U Connection piece 2u Deaeration screw 3...

Page 34: ...s Never block the overpressure valve Discharge valve is installed in the opposite direction of the flow Observe the arrow on the valve Install the discharge valve correctly The diaphragm protection system AMS responds The overpressure valve reacts independently of the dosing flow adjustment 10 to 100 Valve on suction side closed Open the valve Suction filter obstructed Clean the suction filter Rep...

Page 35: ... a higher viscosity mainly for frequency converter operation and higher counter pressures Pressure gauge in discharge line Counter pressure has seriously increased Overpressure valve is adjusted too low Readjust the zero point Correct the setting of the pressure relief valve Especially at stroke frequencies below 15 strokes min e g frequency converter operation Degassing valve M is not working pro...

Page 36: ...ow Q0 Zero point of the pump h Stroke length TM03 6477 4506 TM03 6478 4506 TM03 6479 4506 0 2 4 6 8 10 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 2 4 6 8 10 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 2 4 6 8 10 12 14 16 18 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar TM03 6480 4506 TM03 6481 4506 TM03 6482 4506 TM03 6483 4506 0 2 ...

Page 37: ...ar 3bar 16bar 10 bar 16 bar 3 bar 0 2 4 6 8 10 12 14 16 18 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 16bar 10 bar 16 bar 0 2 4 6 8 10 12 14 16 18 0 10 20 30 40 50 60 70 80 90 100 h Q l h 16bar 10bar 10 bar 16 bar TM03 6488 4506 TM03 6489 4506 TM03 6490 4506 TM03 6491 4506 0 0 4 8 12 16 20 24 28 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 16bar 10 bar 16 bar 3 bar 0 4 8 12 16 20 24 28 ...

Page 38: ... 50 60 70 80 90 100 h Q l h 20bar 25bar 10bar 20 bar 25 bar 10 bar 0 2 4 6 8 10 12 14 16 18 0 10 20 30 40 50 60 70 80 90 100 h Q l h 20bar 25bar 10bar 20 bar 25 bar 10 bar 0 2 4 6 8 10 12 14 16 18 0 10 20 30 40 50 60 70 80 90 100 h Q l h 25bar 20bar 10bar 20 bar 25 bar 10 bar TM03 6496 4506 TM03 6497 4506 TM03 6498 4506 0 4 8 12 16 20 24 28 0 10 20 30 40 50 60 70 80 90 100 h Q l h 20bar 25bar 10ba...

Page 39: ...16 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 3bar 3 bar 10 bar 0 4 8 12 16 20 24 28 32 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 4 8 12 16 20 24 28 32 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar TM03 6503 4506 TM03 6504 4506 TM03 6505 4506 TM03 6506 4506 3 0 50 Q0 3ba 0 10 20 30 40 50 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 ba...

Page 40: ... 40 50 60 70 80 90 100 h Q l h 16bar 10bar 10 bar 16 bar 0 4 8 12 16 20 24 28 32 0 10 20 30 40 50 60 70 80 90 100 h Q l h 16bar 10bar 10 bar 16 bar 0 5 10 15 20 25 30 35 40 45 0 10 20 30 40 50 60 70 80 90 100 h Q l h 16bar 10bar 10 bar 16 bar TM03 6511 4506 TM03 6512 4506 TM03 6513 4506 TM03 6514 4506 0 5 10 15 20 25 30 35 40 45 0 10 20 30 40 50 60 70 80 90 100 h Q l h 16bar 10bar 10 bar 16 bar 0 ...

Page 41: ... 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 10 20 30 40 50 60 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 10 20 30 40 50 60 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar TM03 6519 4506 TM03 6520 4506 TM03 6521 4506 TM03 6522 4506 0 10 20 30 40 50 60 70 80 90 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 10 20 30 40 50 6...

Page 42: ...English GB 42 Fig 90 DMH 100 10 50 Hz Q0 3 bar TM03 6523 4506 0 20 40 60 80 100 120 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar ...

Page 43: ...20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 20 40 60 80 100 120 140 160 180 200 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 20 40 60 80 100 120 140 160 180 200 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar TM03 6528 4506 TM03 6529 4506 TM03 6530 4506 TM03 6531 4506 0 50 100 150 200 250 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3...

Page 44: ...0 70 80 90 100 h Q l h 10bar 16bar 10 bar 16 bar 0 20 40 60 80 100 120 140 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 16bar 10 bar 16 bar 0 20 40 60 80 100 120 140 160 180 200 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 16bar 10 bar 16 bar TM03 6536 4506 TM03 6537 4506 TM03 6538 4506 TM03 6539 4506 0 20 40 60 80 100 120 140 160 180 200 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 16bar 10...

Page 45: ...108DMH 276 16 50 Hz Q0 10 bar TM03 6540 4506 TM03 6541 4506 0 40 80 120 160 200 240 280 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 16bar 10 bar 16 bar 0 40 80 120 160 200 240 280 320 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 16bar 10 bar 16 bar ...

Page 46: ...0 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 100 200 300 400 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 100 200 300 400 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar TM03 6546 4506 TM03 6547 4506 TM03 6548 4506 TM03 6549 4506 0 50 100 150 200 250 300 350 400 450 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 50 100 1...

Page 47: ...English GB 47 Fig 117DMH 550 10 50 Hz Q0 3 bar TM03 6550 4506 0 100 200 300 400 500 600 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 3bar 3 bar 10 bar ...

Page 48: ... 80 90 100 h Q l h 10bar 3bar 3 bar 10 bar 0 100 200 300 400 500 600 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 3bar 3 bar 10 bar 0 100 200 300 400 500 600 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 3bar 3 bar 10 bar TM03 6555 4506 TM03 6556 4506 TM03 6557 4506 TM03 6558 4506 0 100 200 300 400 500 600 700 800 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 3bar 3 bar 10 bar 0 100 200 300 40...

Page 49: ...1 4506 TM03 6562 4506 0 100 200 300 400 500 600 700 800 900 1000 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 100 200 300 400 500 600 700 800 900 1000 0 10 20 30 40 50 60 70 80 90 100 h Q l h 10bar 3bar 3 bar 10 bar 0 200 400 600 800 1000 1200 0 10 20 30 40 50 60 70 80 90 100 h Q l h 3bar 10bar 3 bar 10 bar 0 200 400 600 800 1000 1200 0 10 20 30 40 50 60 70 80 90 100 h Q l h ...

Page 50: ...odel number _____________________________ No media or water _____________________________ A chemical solution name _________________________ see pump nameplate Fault description Please make a circle around the damaged part In the case of an electrical or functional fault please mark the cabinet Please give a short description of the fault _____________________ _____________________ Date and signat...

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