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GRUNDFOS DATA BOOKLET
MDG.26.3.2 3x400V Grundfos pump 97901142
Thank you for your interest in our products. Please contact us
for more information, or visit our website
https://www.lenntech.com/grundfos/MULDOUB/97901142/MDG-26-3-2.html
[email protected]. +31 152 610 900 fax. +31 152 616 289
BE > THINK > INNOVATE
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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
22
24
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.
[email protected]://www.lenntech.comtel. +31 152 610 900
fax. +31 152 616 289