Grundfos DMX 227 Скачать руководство пользователя страница 18 | Manualshive

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Grundfos DMX 227 Скачать руководство пользователя страница 18

English (GB)

18

10.4 Replacing the diaphragm

10.4.1 Switching off the pump

1. Switch off the pump and disconnect it from the power supply.
2. Depressurise the system.
3. Take suitable steps to ensure that the returning dosing

medium is safely collected.

10.4.2 Replacing the diaphragm

1. Loosen the six dosing head screws.
2. Remove the dosing head.
3. Unscrew the diaphragm by manually turning it

counter-clockwise.

4. Refit the retaining ring (4), shim ring (5), lip seal (7) and

supporting ring (6). Replace faulty parts.

5. Screw in the new diaphragm completely.
6. Remove the motor fan cover, and turn the fan blades until the

diaphragm reaches the bottom dead centre.

7. Refit the dosing head carefully, and cross-tighten the screws.

Maximum torque: 70-80 Nm.

8. Deaerate and start the dosing pump.

Fig. 19

Replacing the diaphragm

Grundfos gear oil

Alternative special oil for DHG 68

Note

If possible, rinse the dosing head, e.g. by supplying it
with water.

TM

03

7

189

45

0

6

Pos.

Components

1

Diaphragm

2

Dosing head screws

3

Dosing head

4

Retaining ring

5

Shim ring

6

Supporting ring

7

Lip seal

Caution

After initial start-up and after each time the
diaphragm is changed, tighten the dosing head
screws.
After approximately 6-10 operating hours or two
days, cross-tighten the dosing head screws using a
torque wrench.
Maximum torque: 70-80 Nm.

2

3

6

1

4

5

7

Order no

Description

98683958

5.0 l DHG 68

98683959

7.5 l DHG 68

Manufacturer

Designation

ARAL

Degol BMB 68

BP

BP-Energol GR-XP 68

Chevron

Chevron NL gear compound 68

ESSO

Spartan BP 68

Fina

Fina Giran 68

Mobil Oil

Mobilgear 626

Texaco

Texaco Meropa 68

Shell

Tellus 68

elf

reductelf SP 68

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Содержание DMX 227

Страница 1: ...DMX 227 Dosing pump Installation and operating instructions GRUNDFOS INSTRUCTIONS Further languages http net grundfos com qr i 99559294 ...

Страница 2: ...ty of the system in the event of a failure in the dosing system 3 3 Technical data 4 3 1 Identification 4 3 2 Pump types 5 3 3 Pump performance 5 3 4 Suction heights 6 3 5 Ambient and operating conditions 6 3 6 Dosing medium 6 3 7 Electrical data 6 3 8 Materials 6 3 9 Weights 6 3 10 Dimensional sketches 7 4 Transport and storage 9 4 1 Delivery 9 4 2 Intermediate storage 9 4 3 Unpacking 9 4 4 Retur...

Страница 3: ... 5 Safety instructions for the operator user 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 regulation...

Страница 4: ...rial DMX 1120 5D D PVC V PVC X E2RRXE0AG SS Stainless steel 1 4401 EN 10027 2 316 AISI PP Polypropylene PVC Polyvinyl chloride Terminal box position also VFD postion DMX 1120 5D D PVC V PVC X E2RRXE0AG X Oposite side of dosing head 3 o clock Supply voltage DMX 1120 5D D PVC V PVC X E2RRXE0AG E 3AC 230 400 V 50 Hz 460 V 60 Hz IE3 motors 0 75 kW F Without motor NEMA flange 0 Without motor IEC flange...

Страница 5: ...motor Maximum counterpressure Operation with frequency converter Pump type Dosing head size Motor Stroke volume ml Single pump kW Double pump kW DMX 860 5 1 1 5 2 2 256 DMX 1120 5 1 1 5 2 2 256 DMX 1520 3 2 1 5 2 2 457 DMX 2000 3 2 1 5 2 2 457 Pump type p max 50 Hz 60 Hz 100 Hz Q Max stroke rate Q Max stroke rate Q Max stroke rate Single pump bar psi l h n min l h gal h n min l h gal h n min DMX 8...

Страница 6: ...on abrasive media Newtonian liquids temperature of 20 C standard pump version 3 7 Electrical data 3 7 1 Enclosure class The enclosure class depends on the motor variant selected see motor nameplate The specified enclosure class can only be ensured if the power supply cable is connected with the same degree of protection 3 7 2 Motor Version see motor and pump nameplates 3 8 Materials Pump Pump hous...

Страница 7: ... N J D5 All 170 24 5 9 5 241 128 5 290 194 5 25 185 Pump type Pump connection size D1 A B D E K S1 D4 DMX 860 5 DN65 567 555 281 446 185 95 145 ANSI 2 1 2 567 555 281 446 185 95 140 DMX 1120 5 DN65 567 555 281 446 185 95 145 ANSI 2 1 2 567 555 281 446 185 95 140 DMX 1520 3 DN65 580 605 291 468 201 106 145 ANSI 2 1 2 580 605 291 468 201 106 140 DMX 2000 3 DN65 580 605 291 468 201 106 145 ANSI 2 1 2...

Страница 8: ...0 24 5 9 5 333 128 5 382 194 5 25 185 Pump type Pump connection size D1 A B D E K S1 D4 DMX 860 5D DN65 880 555 281 446 185 95 145 ANSI 2 1 2 880 555 281 446 185 95 140 DMX 1120 5D DN65 880 555 281 446 185 95 145 ANSI 2 1 2 880 555 281 446 185 95 140 DMX 1520 3D DN65 910 605 291 468 201 106 145 ANSI 2 1 2 910 605 291 468 201 106 140 DMX 2000 3D DN65 910 605 291 468 201 106 145 ANSI 2 1 2 910 605 2...

Страница 9: ...dfos is requested to service the pump it must be ensured that the pump is free from substances that can be injurious to health or toxic 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 can refuse to accept the pump for se...

Страница 10: ...line up towards the suction valve Avoid loops which may cause air bubbles Fig 4 Installation of suction line For non degassing media with a viscosity similar to water the pump can be mounted on the tank observe the maximum suction height Flooded suction preferred For media with a tendency to sedimentation install the suction line with filter 13i so that the suction valve remains a few millimetres ...

Страница 11: ...9 Installation with pressure loading valve To avoid the siphon effect install a pressure loading valve 7i in the discharge line and if necessary a solenoid valve 14i in the suction line Fig 10 Installation to avoid the siphon effect 5 3 Mounting Mount the pump horizontally on the tank or on a console using four M8 screws 5 4 Pipe lines 5 4 1 General TM03 6300 4506 TM03 6301 4506 TM03 6302 4506 TM0...

Страница 12: ...the dosing pump If the total of the counterpressure and the static difference in height between the suction valve and the dosing point is less than 10 mWC a pressure loading valve must be installed directly upstream of the dosing point Caution To protect the dosing pump against excessive pressure build up install a relief valve in the discharge line Make sure that the valves are seated correctly p...

Страница 13: ... 8 1 Description of the pump Fig 12 DMX 227 Functional principle Oscillating positive displacement pump with electric drive mechanical diaphragm deflection and constant stroke length Following reduction of the motor speed by a worm gear the rotation of the drive is converted into the suction and compression movement of the diaphragm by means of an eccentric and tappet A defined volume stroke volum...

Страница 14: ...ts can for instance be used to trigger an alarm device or to switch off the pump Fig 14 Diaphragm leakage sensor 9 1 4 Electrical connection of the electronics To ensure electromagnetic compatibility EMC the input cables and current output cables must be screened 1 Connect the screen at one end to PE Refer to the connection diagram 2 Route input cables current output cables and power supply cables...

Страница 15: ... sensor is ready for start up Fig 17 Screwing the sensor into the dosing head Note The relay output connection depends on the application and the connected actuators Current up to Capacitor C Resistor R 60 mA 10 μF 275 V 390 Ω 2 W 70 mA 47 μF 275 V 22 Ω 2 W 150 mA 100 μF 275 V 47 Ω 2 W 1 0 A 220 μF 275 V 47 Ω 2 W TM03 7209 4513 Caution Provide relay outputs on site with an appropriate back up fuse...

Страница 16: ... valves and replace if necessary with stainless steel valves inner valve parts At least every 12 months or after 3 000 operating hours In the event of a fault Caution Carry out a functional check before start up Warning Do not open the electronics or sensor Repairs must only be carried out by authorised and qualified personnel Warning Do not open the electronics or sensor Repairs must only be carr...

Страница 17: ...f necessary 4 Re assemble the valve according to the exploded view below 5 Refit the valve Fig 18 Exploded view of the valves Caution If possible rinse the dosing head e g by supplying it with water TM03 6441 4506 6 x 8 7 6 11 9 13 10 14 4 1 2 11 15 12 3 Pos Components 1 Supporting ring 2 Valve housing 3 Valve seat 4 Valve disk 6 Double end stud 7 Washer 8 Cap nut 9 Valve housing 10 Flange 11 O ri...

Страница 18: ...crews Maximum torque 70 80 Nm 8 Deaerate and start the dosing pump Fig 19 Replacing the diaphragm Grundfos gear oil Alternative special oil for DHG 68 Note If possible rinse the dosing head e g by supplying it with water TM03 7189 4506 Pos Components 1 Diaphragm 2 Dosing head screws 3 Dosing head 4 Retaining ring 5 Shim ring 6 Supporting ring 7 Lip seal Caution After initial start up and after eac...

Страница 19: ... valve covered by sediment Suspend the suction line from a higher position e Crystalline deposits in the valves Clean the valves f Diaphragm broken or diaphragm tappet torn out Replace the diaphragm g Dosing tank is empty Change the tank 3 Dosing pump does not dose a Air in the suction line and dosing head Wait until the pump has deaerated b Viscosity or density of medium too high Check the instal...

Страница 20: ... 0 10 20 30 40 50 60 70 80 90 100 f Hz Q l h p 5bar p 2bar p 5 bar p 2 bar 0 500 1000 1500 2000 2500 3000 0 10 20 30 40 50 60 70 80 90 100 f Hz Q l h p 5bar p 2bar p 5 bar p 2 bar 0 500 1 000 1 500 2 000 2 500 3 000 3 500 0 10 20 30 40 50 60 70 80 90 100 f Hz Q l h p 3bar p 3 bar 0 500 1 000 1 500 2 000 2 500 3 000 3 500 4 000 4 500 0 10 20 30 40 50 60 70 80 90 100 f Hz Q l h p 3bar p 3 bar ...

Страница 21: ...________________ 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 _______________________________________________________________________________ _______________________________________________________________________________ _______________________...

Страница 22: ...22 ...

Страница 23: ...so 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 ...

Страница 24: ...isplayed in this material including but not limited to Grundfos the Grundfos logo and be think innovate are registered trademarks owned by The Grundfos Group All rights reserved 2019 Grundfos Holding A S all rights reserved www grundfos com ...

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