Grundfos DWK Installation And Operating Instructions Manual

DWK

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

2

3

Table of contents

DWK

English (GB)

Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

eština (CZ)

Montážní a provozní návod. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Deutsch (DE)

Montage- und Betriebsanleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Español (ES)

Instrucciones de instalación y funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . . 47

Français (FR)

Notice d'installation et de fonctionnement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Hrvatski (HR)

Montažne i pogonske upute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Magyar (HU)

Telepítési és üzemeltetési utasítás. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Italiano (IT)

Istruzioni di installazione e funzionamento . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Polski (PL)

Instrukcja montau i eksploatacji . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Português (PT)

Instruções de instalação e funcionamento . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Român (RO)

Instruciuni de instalare i utilizare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Srpski (RS)

Uputstvo za instalaciju i rad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

 (RU)

,      . . . . . . . . . . . . . . . . . . 173

Slovensko (SI)

Navodila za montažo in obratovanje. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Slovenina (SK)

Návod na montáž a prevádzku . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Türkçe (TR)

Montaj ve kullanım kılavuzu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Table of contents

4

DWK

Bahasa Indonesia (ID)

Petunjuk pengoperasian dan pemasangan . . . . . . . . . . . . . . . . . . . . . . . . . . 256

 (AR)

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284

Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288

Declaration of conformity EAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290

English (GB)

5

English (GB) Installation and operating instructions

Original installation and operating instructions

CONTENTS

Page

1. Symbols used in this document

2. General description

To ensure reliable and optimum operation, Grundfos

dewatering pumps, type DWK, are designed with two

types of impeller:

• 0.75 - 15 kW models have semi-open impeller

• 22 and 90 kW models have enclosed impeller.

DWK pumps are used for removal of surface and

underground water in small and medium systems.

DWK pumps can be controlled via the pump

controllers GU01 and GU02. For further information,

see data sheet for GU01/GU02 module at

www.grundfos.com.

1. Symbols used in this document

5

2. General description

5

3. Operating conditions

6

4. Applications

7

5. Safety

7

6. Transportation and storage

7

6.1 Transportation

7

6.2 Storage

8

7. Nameplate

8

8. Approvals

9

9. Type key

9

10. Installation

10

10.1 Free-standing submerged installation

10

11. Electrical connection

11

11.1 Pump controllers

13

11.2 GU01 and GU02

13

11.3 Frequency converter operation

13

12. Startup

14

12.1 Direction of rotation

14

13. Operation

15

14. Maintenance, inspection and overhaul

15

14.1 Maintenance

15

14.2 Inspection

16

14.3 Overhaul

16

15. Fault finding

17

16. Service

18

16.1 Service documentation

18

16.2 Contaminated pumps

18

17. Disposal

18

Warning

Prior to installation, read these installation

and operating instructions. Installation and

operation must comply with local

regulations and accepted codes of good

practice.

Warning

If these safety instructions are not

observed, it may result in personal injury.

Warning

If these instructions are not observed, it

may lead to electric shock with consequent

risk of serious personal injury or death.

Caution

If these safety instructions are not

observed, it may result in malfunction or

damage to the equipment.

Note

Notes or instructions that make the job

easier and ensure safe operation.

English (GB)

6

3. Operating conditions

The DWK pump range is suitable for two operating

modes:

• continuous, submerged operation, S1, with

minimum liquid level above the pump

• intermittent operation, S3, with the pump partly

submerged. See fig. 1.

Fig. 1 Liquid level

pH value

DWK pumps in permanent installations can cope

with pH values ranging from 4 to 10.

Liquid temperature

0 to 40 °C.

Density of pumped liquid

Maximum 1000 kg/m

3

.

In the case of higher values, contact Grundfos.

Installation depth

Maximum 25 metres below liquid level.

Operating pattern

DWK.O: Maximum 30 starts per hour.

DWK.E: Maximum 18 starts per hour.

Fig. 2 DWK pump

TM04 4142 0909

S1

S3

TM04 4143 0909

Pos. Description

1 Lifting bracket

2 Nameplate

3Motor

4 Oil plug

5 Outlet flange/hose connection

6 Cable entry

7 Top cover

8 Inlet strainer

9 Pump housing

English (GB)

7

4. Applications

DWK pumps are designed for pumping these liquids:

• underground water

• drainage water

• water containing abrasives such as sand and

gravel.

The pumps are ideal for pumping the above liquids

from installations in or near these places:

• construction sites

• tunnels

• quarries

• fish ponds

• basements

• drain water collecting tanks.

5. Safety

All persons involved must wear appropriate personal

protective equipment and clothing, and all work on

and near the pump must be carried out under strict

observance of the hygiene regulations in force.

6. Transportation and storage

6.1 Transportation

The pump can be transported in a vertical or

horizontal position. Make sure that it cannot roll or

fall over.

Always lift the pump by its lifting bracket, never by

the motor cable or the hose/pipe.

Warning

Pump installation in tanks must be carried

out by specially trained persons.

Work in or near tanks must be carried out

according to local regulations.

Pump type Weight [kg]

DWK O 6.50.075. 39

DWK O.6.50.15 41

DWK O.6.80.15 41

DWK O.6.50.22 45

DWK O.6.80.22 45

DWK O.10.80.37 80.5

DWK.O.10.100.37 80.5

DWK.O.13.80.55 110

DWK.O.13.100.55 110

DWK.O.13.100.75 156

DWK.O.13.150.75 156

DWK.O.13.100.110 189.5

DWK.O.13.150.110 189.5

DWK.O.13.100.150 194.5

DWK.O.13.150.150 194.5

DWK.E.10.100.220 420

DWK.E.10.150.220 427

DWK.E.10.150.300 452

DWK.E.10.200.300 462

DWK.E.10.150.370 839

DWK.E.10.200.370 841

DWK.E.10.150.450 858

DWK.E.10.200.450 860

DWK.E.10.150.550 920

DWK.E.10.200.550 923

DWK.E.10.200.750 973

DWK.E.10.200.900 1028

English (GB)

8

6.2 Storage

6.2.1 Warehouse storage

• The warehouse must be free from excessive

humidity, corrosive gases, vapours or vibrations

which might damage the pumps.

• Store the pumps in a vertical position on a pallet

or stand to keep the pump off the floor and

facilitate easy removal.

• Coil up the cable, and seal the open end tightly

with waterproof plastic and tape or a cable cap.

Do this to prevent moisture from penetrating into

the motor which will cause severe damage to the

windings.

• Give all unpainted surfaces a light coat of oil or

grease to prevent corrosion.

• If new pumps are stored for more than two

months, turn the impeller by hand every two

months to prevent the mechanical seal faces

from seizing up. Failure to do this may result in

seal damage when the pump is started up again.

6.2.2 Storage in the tank

• If an installed pump is not in operation for a long

time, check the insulation resistance and run the

pump for 30 minutes every month. If the pump

cannot be run due to lack of water in the tank,

inspect the pump and turn the impeller by hand

each month and prior to putting the pump back

into service. If the insulation resistance drops

below 10 megohms, contact Grundfos.

• When the pump is not in service, disconnect the

power supply from the control panel.

• If the pump is disconnected from the control

panel when not in service, protect the cable end

as described in section 6.2.1 Warehouse

storage.

7. Nameplate

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.

Fig. 3 Nameplate

TM04 4093 0709

Pos. Description

1 Notified body

2 Type designation

3 Product number and serial number

4 Maximum head [m]

5 Enclosure class

6 Maximum installation depth [m]

7 Number of phases

8 Frequency [Hz]

9 Speed [min

-1

]

10 Weight

11 Rated voltage [V] Star

12 Rated voltage [V] Delta

13 Insulation class

14 Rated current [A] Star

15 Rated current [A] Delta

16 Motor input power P1 [kW]

17 Motor output power P2 [kW]

18 Power factor

19 Maximum liquid temperature [°C]

20 Maximum flow [m

3

/h]

21 Production code (year/week)

1

2

3

4

5

6

7

8

9

10

11

12 13 14 15

16

17

18

19

20

21

DK-8850 Bjerringbro Denmark

Type

Model

Hmax Qmax Tmax. :

P.c.

m l/s c

P,3,QVXOFODVV&RVĭ

96883812

Made in China

Motor ~ Hz P1/P2 kW

n min

-1

Weight kg A

A

V

English (GB)

9

8. Approvals

The standard version of DWK pumps has been

tested by TÜV, in relation to EC Council Directive 98/

37/EC Machinery, registration no. AM 5014341 3

0001 and report no. 13009106 001.

9. Type key

The pump can be identified by the type designation

stated on the pump nameplate. See section

7. Nameplate.

* Exception: Code 075 = 0.75 kW

Code Example DWK .O .6 .50 .075 .S .5 .0D .R

DWK Dewatering pump

O

E

Semi-open impeller

Enclosed impeller

6

Strainer hole size:

Maximum solids size [mm]

50

Pump outlet:

Nominal diameter of pump outlet port [mm]

075

Code for output power, P2:

P2*: Code number from type designation / 10 [kW]

-

S

Equipment:

Standard

Sensor

5

6

Frequency:

50 Hz

60 Hz

0D

1D

0E

1E

Voltage and starting method:

380-415 V, DOL

380-415 V, Y/D

220-240 V, DOL

220-240 V, Y/D

[ ]

R

Material in pump

Standard

Cast iron pump with high-chrome stainless steel impeller and stainless steel inlet strainer

English (GB)

10

10. Installation

Check these points before beginning installation

procedures:

• Does the pump correspond to order.

• Is the pump suitable for the supply voltage and

frequency available at the installation site.

• Are accessories and other equipment

undamaged during transportation.

Prior to installation, check the oil level in the oil

chamber. See section 14. Maintenance, inspection

and overhaul.

The DWK pumps can be installed with a hose or

pipe.

10.1 Free-standing submerged installation

Pumps for free-standing submerged installation can

stand freely on the bottom of the tank or the like.

Fit a flexible union or coupling to the outlet port in

order to facilitate service on the pump and easy

separation of pump and outlet line.

If a hose is used, make sure that the hose does not

buckle and that the inside diameter of the hose

matches that of the pump outlet port.

If a rigid pipe is used, fit the union or coupling, non-

return valve and isolating valve in the order

mentioned when viewed from the pump.

If the pump is installed in muddy conditions or on

uneven ground, we recommend that you support the

pump on bricks or a similar support.

Installation procedure

1. Lower the pump into the liquid by means of a

chain secured to the lifting bracket of the pump.

We recommend that you place the pump on a

plane, solid foundation. Make sure that the pump

stands securely.

2. Hang up the end of the chain on a suitable hook

at the top of the tank and in such a way that the

chain cannot come into contact with the pump

housing.

3. Adjust the length of the motor cable by coiling it

up on a relief fitting to ensure that the cable is not

damaged during operation. Fasten the relief

fitting to a suitable hook. Make sure that the

cable is not sharply bent or pinched.

4. Connect the motor cable.

Fig. 4 Free-standing pump on strainer

Warning

Observe all safety regulations at the

installation site.

Use blowers for fresh-air supply to the

tank.

Warning

Make sure that the lifting bracket is

tightened before attempting to lift the

pump. Tighten if necessary. Carelessness

during lifting or transportation may cause

injury to persons or damage to the pump.

Warning

Before beginning the installation, switch off

the power supply and lock the mains

switch in position 0 with a padlock to

ensure that the power supply cannot be

accidentally switched on.

Switch off any external voltage connected

to the pump before working on the pump.

Caution

The pumps are designed for operation in

vertical position only.

TM04 4144 0909

English (GB)

11

11. Electrical connection

The electrical connection must be carried out in

accordance with local regulations.

The supply voltage and frequency are marked on the

pump nameplate. The voltage tolerance must be

within - 5 %/+ 5 % of the rated voltage. Make sure

that the motor is suitable for the power supply

available at the installation site.

All pumps are supplied with 10 m cable and a free

cable end.

Pumps with sensors must be connected to a GU01

or GU02 pump controller. See fig. 5 for DOL-

connected pumps or fig. 6 for star-delta-connected

pumps. For further information see the installation

and operating instructions for the selected control

box or pump controller at www.grundfos.com.

Warning

Before installation and the first startup of

the pump, check the condition of the cable

visually and measure the cable resistance

to avoid short circuits.

Warning

The pump must be connected to a mains

switch with a minimum contact gap of 3

mm in all poles.

The classification of the installation site

must be approved by the local fire-fighting

authorities in each individual case.

Grundfos control boxes and pump

controllers must not be installed in

potentially explosive environments.

Make sure that all protective equipment

has been connected correctly.

English (GB)

12

Fig. 5 Wiring diagram, DOL starting

Fig. 6 Wiring diagram, star-delta starting

TM04 4096 0709TM04 4097 3316

L1 L2 L3

MCCB

V

A

MCCB

MC Md My

THR

GU 01 / GU 02

E

U1 V1 W1 W2 U2 V2

1.M

3 ~

T/P T/P

S/S S/S

S/S

F/L

MC

T

TMyMdMC

AUX

THR THR

MC

OL RL GL AUX

6

5

GU01/GU02

6

8

AUX

F/L

E1

E2

E3

GU01/

GU02

10

9

3

21

T/P

S/S

T/P

S/S

11

OP.TR

English (GB)

13

11.1 Pump controllers

The pumps must be connected to a control box with

a motor protection relay with IEC trip class 10 or 15.

The pumps can be controlled by the following LC and

LCD pump controllers:

• LC 107, LCD 107 with air bells

• LC 108, LCD 108 with float switches

• LC 110, LCD 110 with water level electrodes.

LC controllers are for single-pump installations. LCD

controllers are for two-pump installations.

In the following description, “level switch” can be air

bells, float switches or water level electrodes,

depending on the pump controller selected.

The LC controller is fitted with two or three level

switches: One for start and one for stop of pump.

The third level switch, which is optional, is for high-

level alarm.

The LCD controller is fitted with three or four level

switches: One for common stop and two for start of

the pumps. The fourth level switch, which is optional,

is for high-level alarm.

For further information, see the installation and

operating instructions for the pump controller

selected.

Fig. 7 Pump controllers

11.2 GU01 and GU02

GU01 is a monitoring device for monitoring the stator

temperature and water penetration into the motor. It

receives a digital signal.

GU02 is a monitoring device for monitoring stator

and bearing temperature as well as water

penetration into the motor. It receives an analog

signal.

Both monitoring devices must be connected to the

control panel via a relay.

GU01 and GU02 are manufactured for Grundfos. For

further information, please contact your local

Grundfos company.

11.3 Frequency converter operation

11.3.1 Recommendations

Before installing a frequency converter, calculate the

lowest allowable frequency in the installation in order

to avoid zero flow.

• Do not reduce the motor speed to less than 30 %

of rated speed.

• Keep the flow velocity above 1 m/sec.

• Let the pump run at rated speed at least once a

day in order to prevent sedimentation in the

piping system.

• Do not exceed the frequency indicated on the

nameplate. In this case there is risk of motor

overload.

• Keep the motor cable as short as possible. The

peak voltage will increase with the length of the

motor cable. See data sheet for the frequency

converter used.

• Use input and output filters on the frequency

converter. See data sheet for the frequency

converter used.

11.3.2 Possible consequences

When operating the pump via a frequency converter,

please be aware of these possible consequences:

• The locked-rotor torque will be lower. How much

lower will depend on the frequency converter

type. See the installation and operating

instructions for the frequency converter used for

information on the locked-rotor torque available.

• The working condition of bearings and shaft seal

may be affected. The possible effect will depend

on the application. The actual effect cannot be

predicted.

• The acoustic noise level may increase. See the

installation and operating instructions for the

frequency converter used for advice as to how to

reduce the acoustic noise.

TM04 4098 0709

S1

S3

E1 E2 E3

Min.

Max.

Min.

English (GB)

14

12. Startup

Procedure

1. Remove the pump from the system.

2. Check that the impeller can rotate freely. Turn the

impeller by hand.

3. Check the condition of the oil in the oil chamber.

See section 14.2.2 Inspection of seal sensor.

4. Check whether the monitoring units, if used, are

operating satisfactorily.

5. Check the setting of the level pickups, float

switches or electrodes.

6. Check the direction of rotation, see section

12.1 Direction of rotation.

7. Reinstall the pump in the system.

8. Switch on the power supply.

9. Open the isolating valves, if fitted.

10. Check that the motor is 2/3 covered with liquid. If

the liquid level is below that, add liquid to the

tank until the minimum level is reached.

11. Vent the pump by tilting it by means of the lifting

chain and let trapped air escape.

12. Let the pump run briefly, and check if the liquid

level is falling. A correctly vented pump will

quickly lower the liquid level.

13. Start the pump.

12.1 Direction of rotation

Check the direction of rotation in the following way

every time the pump is connected to a new

installation.

Procedure

1. Let the pump hang from a lifting device, e.g. the

hoist used for lowering the pump into the tank.

2. Start and stop the pump while observing the

movement (jerk) of the pump. If connected

correctly, the impeller will rotate clockwise when

viewed from above. Consequently, when started,

the pump will jerk counter-clockwise. See fig. 8. If

the direction of rotation is wrong, interchange any

two phases in the power supply.

Fig. 8 Checking the direction of rotation

Warning

Before starting work on the pump, make

sure that the fuses have been removed or

the mains switch has been switched to off.

Make sure that the power supply cannot

be accidentally switched on.

Make sure that all protective equipment

has been connected correctly.

The pump must not run dry.

Caution

In case of abnormal noise or vibrations

from the pump or power/water supply

failure, stop the pump immediately. Do not

attempt to restart the pump until the cause

of the fault has been found and the fault

corrected.

Note

The pump may be started for a very short

period without being submerged for

checking of the direction of rotation.

TM04 4146 0909

English (GB)

15

13. Operation

S1, continuous operation

In this operating mode, the pump can operate

continuously without being stopped for cooling. See

fig. 9. Being completely submerged, the pump is

sufficiently cooled by the surrounding liquid. See

also fig. 1.

Fig. 9 S1 continuous operation

S3, intermittent operation

Operating mode S3 means that within 10 minutes the

pump must be in operation for 4 minutes and

stopped for 6 minutes. See fig. 10.

For this operating mode, the pump must be partly

submerged in the pumped liquid, i.e. the liquid level

must reach at least up to the middle of the motor

housing. See fig. 1.

Fig. 10 S3 intermittent operation

14. Maintenance, inspection and

overhaul

14.1 Maintenance

The life of the pump depends largely on the

operating conditions, so we strongly recommend

daily inspection and periodic servicing in order to

guarantee maximum product lifetime.

14.1.1 Current and voltage

Check the pump current and voltage. If the ammeter

reading exceeds the rated value, or is far lower than

the rated value, there is a problem. The voltage must

be stable within - 5 %/+ 5 % of the rated value

throughout the operational period.

14.1.2 Vibration

Check that the pump is operating smoothly and

without vibrations.

14.1.3 Outlet pressure and flow rate

Check the outlet pressure and flow rate (if a

flowmeter is available) at least once a month.

Declining performance can indicate the need for an

overhaul. Regardless of performance, the pressure

and flow rate must be stable, and rapidly changing

pressure or flow rate indicate system problems on

the inlet or outlet side.

14.1.4 Insulation resistance

Check the insulation resistance of the motor at least

once a month.

If the insulation resistance has declined sharply

since the previous reading, this is an indication of

impending insulation failure, and the pump must be

scheduled for service even though the insulation

resistance may still be over 10 megohms.

TM02 7775 4003TM04 2656 2808

P

t

10 min

P

t

4 min 6 min

Operation

Stop

English (GB)

16

14.2 Inspection

Under normal operating conditions, remove the

pump from the tank and inspect it once every year.

Under severe operating conditions where sand,

fibrous material and solids are involved, do this once

a month.

The standard inspection procedure is summarized

below.

14.2.1 How to remove the pump

1. Hook the lifting chain through the pump lifting

bracket and lift so that the chain just carries the

load of the pump.

2. Loosen the bolts/nuts of the outlet pipe to drain

away possible water in the pipe.

3. Remove the bolts/nuts of the outlet pipe, and lift

the pump out of the tank.

14.2.2 Inspection of seal sensor

Check the resistance of the seal sensor with a

multimeter as shown in fig. 11.

Fig. 11 Resistance check

Oil replacement

After checking the resistance of the seal sensor,

replace the oil in the oil chamber.

1. Unscrew the oil plug. See fig. 12.

2. Tilt the pump with the oil filling hole pointing

downwards in order to drain the pump of oil. If the

drained oil is contaminated or opaque, this is an

indication of an impending mechanical shaft seal

failure. Replace the mechanical seal.

Fig. 12 Position of oil screw

3. Fill fresh oil into the oil chamber through the oil

filling hole. Use lubrication oil ISO VG 32 Mobil

DTE 24 turbine oil 90 or equivalent.

14.2.3 Inspection of impeller and wear plate

Check the clearance between impeller and wear

plate. Recommended clearance is 0.3 - 0.5 mm.

Replace or repair as necessary.

14.3 Overhaul

Overhaul of pumps should be carried out by an

authorized Grundfos service centre.

A normal overhaul includes these points:

1. Disassemble and clean the pump.

2. Inspect and replace, if necessary, each

component.

3. Carry out electrical test of the motor.

4. Replace worn-out or damaged components.

5. Reassemble the pump.

6. Carry out performance and functional test of the

pump.

7. Repaint and pack the pump.

Caution

Do not use a megger as this will damage

the control circuit.

TM04 4119 0809

20 KΩ

TPTP

SS SS

Warning

When loosening the screws of the oil

chamber, note that pressure may have

built up in the chamber. Do not remove the

screws until the pressure has been fully

relieved.

TM04 4144 0909

Oil plug

English (GB)

17

15. Fault finding

Warning

Before starting work on the pump, make

sure that the fuses have been removed or

the mains switch has been switched to off.

Make sure that the power supply cannot

be accidentally switched on.

All rotating parts must have stopped

moving.

Note

For pumps with sensor, start fault finding

by checking the status on the GU01 or

GU02 front panel. See installation and

operating instructions for GU01 or GU02.

Fault Cause Remedy

Motor does not

start, fuses blow

or motor

protector trips

immediately.

Caution: Do not

try to start again.

1. Supply failure; short-circuit; earth-

leakage fault in cable or motor

winding.

Have the cable and motor checked and

repaired by a qualified electrician.

2. Fuses blow due to use of wrong type

of fuse.

Fit fuses of the correct type.

3. Impeller blocked by impurities. Clean the impeller.

4. Level pickup, float switch or electrode

out of adjustment or defective.

Check the level pickups, float switches or

electrodes.

5. Motor phase malfunction Inspect motor and connections.

Pump operates,

but motor

protector trips

after a short

while.

1. Low setting of thermal relay in motor

protector.

Set the relay in accordance with the

specifications on the pump nameplate.

2. Increased current consumption due to

large voltage drop.

Measure the voltage between two motor

phases. Tolerance: - 5 %/+ 5 %.

3. Impeller blocked by impurities. Clean the impeller.

4. Wrong direction of rotation. Check the direction of rotation and possibly

interchange any two phases in the power

supply. See section 12.1 Direction of

rotation.

The thermal

switch of the

pump trips after a

short while.

1. Too high liquid temperature.

Inadequate cooling.

Improve cooling or lower the liquid

temperature.

2. Too high viscosity of the pumped

liquid.

Dilute the pumped liquid.

3. Fault in the electrical connection. (Y-

connection of pump to D-connection

results in considerable undervoltage).

Check and correct the electrical connection.

Pump operates at

below-standard

performance and

power

consumption.

1. Impeller blocked by impurities. Clean the impeller.

2. Wrong direction of rotation. Check the direction of rotation and possibly

interchange any two phases in the power

supply. See section 12.1 Direction of

rotation.

Pump operates,

but gives no

liquid.

1. Air in pump. Vent the pump twice.

2. Outlet valve closed or blocked. Check the outlet valve and possibly open

and/or clean.

3. Non-return valve blocked. Clean the non-return valve.

Pump clogged.

1. The liquid contains large particles. Select a pump with a larger size of passage.

2. A float layer has formed on the

surface.

Install a mixer in the tank.

English (GB)

18

16. Service

16.1 Service documentation

Service documentation is available on

www.grundfos.com > International website >

Grundfos Product Center > Service & support.

If you have any questions, please contact the

nearest Grundfos company or service centre.

16.2 Contaminated pumps

If Grundfos is requested to service the pump,

Grundfos must be contacted with details about the

pumped liquid, etc. before the pump is returned for

service. Otherwise Grundfos can refuse to accept

the pump for service.

Possible costs of returning the pump are paid by the

customer.

However, any application for service (no matter to

whom it may be made) must include details about

the pumped liquid if the pump has been used for

liquids which are injurious to health or toxic.

Before a pump is returned, it must be cleaned in the

best possible way.

17. Disposal

This product or parts of it must be disposed of in an

environmentally sound way:

1. Use the public or private waste collection service.

2. If this is not possible, contact the nearest

Grundfos company or service workshop.

Subject to alterations.

Warning

Before starting work on the pump, make

sure that the fuses have been removed or

the mains switch has been switched to off.

Make sure that the power supply cannot

be accidentally switched on.

All rotating parts must have stopped

moving.

Warning

If a pump has been used for a liquid which

is injurious to health or toxic, the pump will

be classified as contaminated.

eština (CZ)

19

eština (CZ) Montážní a provozní návod

Peklad originální anglické verze

OBSAH

Strana

1. Symboly použité v tomto návodu

2. Všebecný popis

Pro zajištní spolehlivého a optimálního provozu,

jsou odvodovací erpadla Grundfos typu DWK

navržena se dvma typy obžných kol:

• Modely 0,75 - 15 kW mají polootevené obžné

kolo

• Modely 22 a 90 kW mají uzavené obžné kolo.

erpadla DWK se používají pro pepravu

povrchových a podzemních vod v malých a stedn

velkých soustavách.

erpadla DWK mohou být ízena pomocé ídících

jednotek GU01 a GU02. Další informace jsou

uvedeny v letáku pro GU01/GU02 na

www.grundfos.com.

1. Symboly použité v tomto návodu

19

2. Všebecný popis

19

3. Provozní podmínky

20

4. Použití

21

5. Bezpenost

21

6. Doprava a skladování

21

6.1 Doprava

21

6.2 Skladování

22

7. Typový štítek

22

8. Certifikace

23

9. Typové oznaení

23

10. Instalace

24

10.1 Voln stojící ponoená instalace

24

11. Elektrická pípojka

25

11.1 ídící jednotky pro erpadla

27

11.2 GU01 a GU02

27

11.3 Provoz s frekvenním mniem

27

12. Spouštní

28

12.1 Sm

r otáení

28

13. Provoz

29

14. Údržba, kontrola a oprava

29

14.1 Údržba

29

14.2 Kontrola

29

14.3 Generální oprava

30

15. Oprava poruch

31

16. Servis

32

16.1 Servisní dokumentace

32

16.2 Kontaminovaná erpadla

32

17. Likvidace výrobku

32

Varování

Ped zahájením montážních prací si

peliv pette tyto montážní a provozní

pedpisy. Montáž a provoz provádjte

rovnž v souladu s místními pedpisy a se

zavedenou osvdenou praxí.

Varování

Bezpenostní pokyny uvedené v tomto

montážním a provozním návodu, jejichž

nedodržení mže zpsobit ohrožení osob.

Varování

Jestliže tyto instrukce nebudou dodrženy,

mže to vést k úrazu elektrickým proudem

a z toho vyplývajícím vážným zranním

nebo úmrtím.

Pozor

Pokud nebudou tyto bezpenostní pokyny

dodrženy, mohlo by dojít k poruše nebo

poškození zaízení.

Pokyn

Doporuení nebo pokyny, které mají

usnadnit práci a zajišovat bezpený

provoz.

eština (CZ)

20

3. Provozní podmínky

ada erpadel DWK je vhodná pro dva provozní

režimy:

• nepetržitý, ponoený provoz, S1, s min. hladinou

kapaliny nad erpadlem

•perušovaný provoz, S3, s erpadlem ásten

ponoeným. Viz obr. 1.

Obr. 1 Hladina kapaliny

Hodnota pH

erpadla DWK ve stálých instalacích mohou

zvládnout hodnoty dosahující pH 4 až 10.

Teplota kapaliny

0 °C až + 40 °C.

Hustota erpané kapaliny

Maximáln 1000 kg/m

3

.

V pípad vtších hodnot kontaktujte Grundfos.

Instalaní hloubka

Maximáln 25 metr pod hladinou kapaliny.

Provozní vzorec

DWK.O: Maximáln 30 zapnutí za hodinu.

DWK.E: Maximáln 18 zapnutí za hodinu.

Obr. 2 erpadlo DWK

TM04 4142 0909

S1

S3

TM04 4143 0909

Pol. Popis

1 Zvedací konzola

2 Typový štítek

3Motor

4 Olejová zátka

5Výtlaná píruba/hadicová pípojka

6 Kabelová prchodka

7 Horní kryt

8Sací síto

9Tleso erpadla

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