GRUNDFOS DATA BOOKLET

MDG.26.3.2 3x400V Grundfos pump 97901142

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Printed from Grundfos Product Centre [2018.06.003]

Position Qty. Description1 MDG.26.3.2

Note! Product picture may differ from actual product

Product No.: On request

Supplied as complete unit ready for installation, the Multilift consist of a fully integrated collecting tankwith two grinder pumps and submersible motors mounted on the collecting tank and a pre-wiredController incl. a level sensor. (Non-return valves and discharge pipes are available as accessories)

The fully integrated collecting tank has all necessary ports for the connection of inlet pipe, dischargepipe, vent pipe and a manually operated diaphragm pump (accessory).

The collecting tank contains 7 inlet socketsaround it's shape. The back inlet DN100is placed on a patented inlet disk to connect all inlet pipe levels (centre) between 180 and 315mmstepless. DN100 and DN50 inlet sockets on each side. DN150, DN50 sockets on the top of the tank.

Multilift corrosion free polyethylen collecting tanks are gas- and odour-proof as well as watertight ,reduction of residual water and less sedimentation by chamfered bottom design.

The grinder pump with Vortex impeller, submersible motor, oil chamber with physiological harmless oilfilling between a mechanical cartridge shaft seal. Pumps discharges with inner threads of 1 1/4 inch.

An LC221 controller with microprocessor is equipped with display for full monitoring possibilities. Thepump and sensor are connected to the controller with 10m cable and tube length. The power supplycable is 1,5m with plug (incl. phase inverter for 3 phase motor)Contactless, piezo resistive pressure sensor pluggable inside the cabinet, monitored by controller,accurate to themillimetre shown on display. Blockage free pressure tube inside the tank without movable parts insidewastewater.

The controller offer thermal motor protection and monitoring of pump operation. The thermal motorprotection consists of thermal switches in the winding.

Controller functions:• on/off, regular and failure changeover of two grinder pump based on a continuous signal from apiezo-resistive sensor• motor protection via motor-protective circuit breaker and/or current measurement as well asconnection of thermal switches.• dry running motor protection via run-time limitation with a following emergency operation• 24h automatic test runs during long periods ofinactivity• setting of delay times:

- stopping delay (time from the stop level is reached till the pumped is stopped)- starting delay (time from the start level is reached till the pumped is started)- alarm delay (time from a fault appears till an alarm is

indicated) to prevents short-time high-level alarm in case of temporary high inflow to the tank.• automatic current measurement for alarm indications• operating indication of:

- operating mode (auto, manual)- operating hours- impulses (number of starts)

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Printed from Grundfos Product Centre [2018.06.003]

Position Qty. Description- highest measured motor current

• alarm indication of:- pump status (running, fault)- phase-sequence fault and missing phase- thermal-switch failure- high-water alarm- time for service/maintenance (selectable).

• selection of automatic alarm resetting• fault log of up to 20 alarms• selection between different start levels• selection of connected sensor type• calibration of sensor (preset)• selection of maintenance interval (0, 3, 6 or 12 months).

As standard, the LC 221 has4 potential-free outputs for:– pump running– pump failure– high water-level alarm– common fault.6 digital inputs for the following functions:– connecting a pressure sensor board (pre-assembled)– connecting an analogue sensor (4-20mA or 0-5V)– connecting up to four level switches or pressure switches instead of analogue sensor– connecting a separate level switch to be used for flooddetection outside the Multilift. Lifting stations are ofteninstalled in a sump inside the basement - the lowest point in the building. In case of e.g. groundwaterinflow or water pipe burst, an alarm will be indicated by the controller.– connecting an external alarm reset– connecting the thermal switch of the motor.

The Multilift range is designed due to the standard EN12050-1, approved and monitored by externalinstitute LGA. Further approvals are VDE, GHOST, CB, EMV

Technical:Type of impeller: GRINDER SYSTEM

Materials:Gasket: SIC/SIC

Liquid:Maximum liquid temperature: 40 °CDensity: 998.2 kg/m³

Electrical data:Power input - P1: 2 x 3.7 kWRated power - P2: 2 x 2.6 kWMains frequency: 50 HzRated voltage: 3 x 400 VVoltage tolerance: +10/-10 %Max starts per. hour: 60Rated current: 2 X 6,1 ACos phi - power factor: 0.87Rated speed: 2870 rpmMotor efficiency at full load: 82 %Number of poles: 2Start. method: direct-on-lineEnclosure class (IEC 34-5): IP68Insulation class (IEC 85): FType of cable plug: CEE 3P+N+EMains cable: 1.5 m

Controls:Type of control box: LC221.2

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Printed from Grundfos Product Centre [2018.06.003]

Position Qty. DescriptionTank:Total volume of tank(s): 93 lTotal effective volume of collecting tank at 180 mm inlet: 23 lTotal effective volume of collecting tank at 250 mm inlet: 37 lTotal effective volume of collecting tank at 315 mm inlet: 50 l

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Printed from Grundfos Product Centre [2018.06.003]

On request MDG.26.3.2 50 HzH

[m]

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

Q [l/s]0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8

MDG.26.3.2, 3*400 V, 50Hz

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Printed from Grundfos Product Centre [2018.06.003]

H[m]

0

2

4

6

8

10

12

14

16

18

20

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26

28

30

32

34

36

38

Q [l/s]0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5

MDG.26.3.2, 3*400 V, 50Hz

712

726

160DN150 /

50DN50 /

75DN70 /

100212

150

712

178

662

306

186

128

50DN50 /

DN32356

50

135

445

7550DN50 /

110DN100 /

250

115

123178

505 55

1

50DN50 /

250

115

123178

110DN100 /

110DN100 /31

525

0

180

6

4: 350mm3: 300mm2: 250mm

1: 180mm

3

6

5

LCD 109

5

5CEE, 16 A plug

3M

3

M

Description ValueGeneral information:Product name: MDG.26.3.2Product No: On requestEAN number: On requestTechnical:Max flow: 5.19 l/sHead max: 33.8 mType of impeller: GRINDER SYSTEMMaterials:Gasket: SIC/SICLiquid:Maximum liquid temperature: 40 °CDensity: 998.2 kg/m³Electrical data:Power input - P1: 2 x 3.7 kWRated power - P2: 2 x 2.6 kWMains frequency: 50 HzRated voltage: 3 x 400 VVoltage tolerance: +10/-10 %Max starts per. hour: 60Rated current: 2 X 6,1 ACos phi - power factor: 0.87Rated speed: 2870 rpmMotor efficiency at full load: 82 %Number of poles: 2Start. method: direct-on-lineEnclosure class (IEC 34-5): IP68Insulation class (IEC 85): FMotor protec: THERMAL SWITCHMotor cable: 10 mCable type: H07RN-FType of cable plug: CEE 3P+N+EMains cable: 1.5 m

H05 VV-FControls:Type of control box: LC221.2Operation mode: S3-35%, 1MINTank:Total volume of tank(s): 93 l

Total effective volume of collecting tank at180 mm inlet:

23 l

Total effective volume of collecting tank at250 mm inlet:

37 l

Total effective volume of collecting tank at315 mm inlet:

50 l

712

160DN150 /

50DN50 /

75DN70 /

100212150

712

662186

50DN50 /

DN32

356

75

50DN50 /

110DN100 /123

178

50DN50 /

123

178

110DN100 /

110DN100 /

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Printed from Grundfos Product Centre [2018.06.003]

On request MDG.26.3.2 50 Hz

Note! All units are in [mm] unless others are stated.Disclaimer: This simplified dimensional drawing does not show all details.

712

726

160DN150 /

50DN50 /

75DN70 /

100212

150

71217

8

662

306

186

128

50DN50 /DN32

356

50

135

445

7550DN50 /

110DN100 /

250

115

123178

505 55

150DN50 /

250

115

123178

110DN100 /

110DN100 /

315

250

180

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Printed from Grundfos Product Centre [2018.06.003]

Exploded view

301a

219

92

7

7a

77

301a

92

11

9

51

100

49

105

45

215a

215

18

217215a

534a534

531531a

28

17

251d

251a

6

11b

66a

67

530530a

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Printed from Grundfos Product Centre [2018.06.003]

Sectional drawing (TM058200 for TPE2,TPE3)

4

2 13

5

TM058200

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Printed from Grundfos Product Centre [2018.06.003]

Exploded view ( TM057026 for MGE model H/I )

251d

251b

290

287277a

286

277

273a

273

268268a289a289

288b288288a

251a

252b

156c

159d

156b

156d188

275a

153

154

158

178

185

192

191

159e

156c 156

151152

266

187

291

293

252a

172

150

287a

502

273b

157

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Printed from Grundfos Product Centre [2018.06.003]

Parts list MDG.26.3.2, Product No. On requestValid from 1.7.2012 (1226)

Pos Description Annotation Données de classification Référence Quantité Unité6a Pin 1 pcs9a Key 1 pcs26.a O-ring Diameter: 32 1 pcs

Material type: NBRThickness: 4

37 O-ring Diameter: 204 1 pcsMaterial type: NBRThickness: 3

37a O-ring Diameter: 144.3 2 pcsMaterial type: NBRThickness: 5.7

44 Grinder ring 1 pcs45 Grinder head 1 pcs49 Impeller 1 pcs58 Retainer for seal ring 1 pcs66 Wedge lock washer Designation: M8 A4 1 pcs68 Adjustment nut 1 pcs76 Nameplate 1 pcs92 Strap cpl. 1 pcs102 O-ring Diameter: 17.3 1 pcs

Material type: NBRThickness: 2.4

- 105 Shaft seal 1 pcsShaft seal 1Shaft seal 1Shaft seal 1Retaining ring 1Shaft seal, rotating part 1Shaft seal, rotating part 1Shaft seal, stationary part 1Shaft seal, stationary part 1

106 O-ring Diameter: 50 2Material type: NBRThickness: 3

107 O-ring Diameter: 90 1 pcsMaterial type: NBRThickness: 4

112a Retaining ring 1 pcs- 150a Stator w/housing cpl. 1 pcs

Cover 1Flex insulation 0Connector pin 6

48 Stator Winding resistance: 2,28 155 Stator housing 1159 O-ring Diameter: Â52 1

Material type: NBRThickness: 3

173 Cross recess Pan head screw Designation: CROSS-HEAD SCREW 1173a Lock washer 1

- 176 Plug 1Pin connector 1

153 Ball bearing Designation: 3205.2ZR 1 pcs153a Lock washer 1 pcs153b Retaining ring 1 pcs154 Ball bearing Designation: 6205.2Z.C4.SYN 1 pcs155 Oil chamber 1 pcs158 Waved washer 1 pcs172 Shaft w/rotor 1 pcs

- 181 Cable cpl. 1 pcs

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Printed from Grundfos Product Centre [2018.06.003]

Pos Description Annotation Données de classification Référence Quantité Unité198 O-ring Diameter: 34.2 1

Material type: NBRThickness: 3

188.a Hex socket head cap screw Length (mm): 25 12 pcsThread: M8

190 Lifting bracket 1 pcs193 Hex socket head cap screw Designation: A2-70 2 pcs

Length (mm): 20Thread: M12

193a Oil 0 L194 Washer Internal diameter: 19 2 pcs

Outer diameter: 12.2Thickness: 4.4

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Disclaimer: The information about the Grundfos pump in this document may be outdated. Data may be subject to alterations without further notice. Please contact us to verify the data above is still accurate/up-to-date.

All information is copyright Grundfos.

info@lenntech.comhttps://www.lenntech.comtel. +31 152 610 900 fax. +31 152 616 289