Table Of Contents; Symbols Used In This Document; Identification - Grundfos DWK Series Service Instructions Manual

English (GB) Service instructions
Original service instructions
CONTENTS
1. Symbols used in this document
2. Identification
2.1 Nameplate
2.2 Type key, DWK
2.3 Type key, DPK
3. Tightening torques
4. Service tools
4.1 Standard tools
4.2 Torque tools
5. Dismantling
5.1 General information
5.2 Oil change
5.3 Removing impeller and pump housing
5.4 Removing shaft seals
5.5 Removing bearings
5.6 Removing cable
5.7 Removing stator
6. Assembly
6.1 Fitting stator
6.2 Fitting cable
6.3 Fitting bearings
6.4 Fitting shaft seals
6.5 Fitting impeller and pump housing
7. Fault finding
8. Components and material specification
8.1 DWK.O.6.50.075, DWK.O.6.50.15 and DWK.O.6.50.22 16
8.2 DWK.O.6.80.15, DWK.O.6.80.22, DWK.O.10.80.37
and DWK.O.10.100.37
8.3 DWK.O.13.80.55, DWK.O.13.100.55,
DWK.O.13.100.75, DWK.O.13.100.110,
DWK.O.13.100.150 and DWK.O.13.150.150
8.4 DWK.E.10.100.220, DWK.E.10.150.220,
DWK.E.10.150.300, DWK.E.10.200.300
8.5 DWK.E.10.150.370, DWK.E.10.150.450,
DWK.E.10.200.370, DWK.E.10.200.450,
DWK.E.10.150.550, DWK.E.10.200.550
8.6 DWK.E.10.200.750, DWK.E.10.200.900
8.7 DPK.10.50.075, DPK.10.50.15 and DPK.10.80.22
8.8 DPK.15.80.37, DPK.15.80.55, DPK.15.100.75,
DPK.20.100.110 and DPK.20.100.150
8.9 DPK.20.150.190 and DPK.20.150.220
8.10 DPK.V.65.80.15.2 and DPK.V.65.80.22.2
8.11 DPK.V.80.80.37.2
8.12 DPK.V.80.80.55.2 and DPK.V.80.80.75.2
8.13 DPK.V.65.80.15.4 and DPK.V.65.80.22.4
8.14 DPK.V.80.80.37.4, DPK.V.80.80.55.4 and
DPK.V.80.80.75.4

1. Symbols used in this document

Warning
If these safety instructions are not observed, it may
result in personal injury.
Warning
The surface of the product may be so hot that it may
cause burns or personal injury.
If these safety instructions are not observed, it may
Caution
result in malfunction or damage to the equipment.
Notes or instructions that make the job easier and
Note
ensure safe operation.
2

2. Identification

The nameplate is fitted to the top cover of the pump. Fix the extra
nameplate supplied with the pump at the installation site or keep
it in the cover of this booklet.
Page
2
2.1 Nameplate
2
2
1
3
2
3
3
4 Type
4
Model
5
Hmax
5
5
5
6
Motor
7
6 n
Weight
6
8
6
9
7
8
8 10 11
9
Nameplate
Fig. 1
9
10
Pos. Description
10
10 1 Notified body
12
2 Type designation
12
3 Product number and serial number
13
4 Maximum head [m]
14
5 Enclosure class
15
6 Maximum installation depth [m]
7 Number of phases
17
8 Frequency [Hz]
9 Speed [min
18
10 Weight
11 Rated voltage [V] Star
19
12 Rated voltage [V] Delta
13 Insulation class
20
14 Rated current [A] Star
21
22
15 Rated current [A] Delta
16 Motor input power P1 [kW]
23
17 Motor output power P2 [kW]
24
25
18 Power factor
26
19 Maximum liquid temperature [°C]
27
20 Maximum flow [l/s]
28
21 Production code (year/week)
29
P.c.
m Qmax l/s Tmax. : c
~ Hz P1/P2 kW
-1
min V A
kg A
V
DK-8850 Bjerringbro Denmark
12 13 14 15
-1
]
21
20
19
18
17
16