Kärcher PW 20 Manuale utente

English 5.906-507.0 Rev. 00 (08/10) 1

PW 20, PW 30/1

Service Manual

2 English 5.906-507.0 Rev. 00 (08/10)

Contents

1 Preface 3

2 Safety instructions 3

2.1 Hazard levels 3

3 Technical Features 3

3.1 Required tools 3

4 Parts of the system 3

5 Basic settings and service procedures 6

5.1.1 Remove the covering plate 6

5.1.2 Replacing the brush roller - PW 20 6

5.1.3 Replace the brush motor 6

5.1.4 Replacing the mains cable 7

5.1.5 Replace the interference filter 7

5.1.6 Replace the appliance switch, safety switch 7

4.2 PW 30/1 5

5.2.1 Replacing the brush roller 7

5.2.2 Replace the motor. 9

5.2.3 Replace the interference filter 11

5.2.4 Replace toothed drive wheel 11

5.2.5 Replace appliance switch 11

5.2.6 Replace the spray hose 11

5.2.7 Replace the spray nozzle 12

5.2.8 Replace the spray valve 12

5.2.9 Replacing the mains cable 13

5.2.10 Replace the running roller 13

5.2.11 Reset the safety switch 13

6 Maintenance and care 14

6.1 After each operation 14

6.2 Half-yearly 14

7 Troubleshooting 14

8 Technical specifications 14

8.1 Special tools 14

8.2 Tightening torques 14

9 Circuit diagram 15

4.1 PW 20 15

4.2PW 30/1 16

English 5.906-507.0 Rev. 00 (08/10) 3

Good service work requires extensive and practice-

oriented training as well as well-structured training

materials.

Hence we offer regular basic and advanced training

programmes covering the entire product range for all

service engineers.

In addition to this, we also prepare service manuals

for important appliances - these can be initially used

as instruction guides and later on as reference

guides.

Apart from this, we also regular information about

product enhancements and their servicing.

If you should require supplements, have corrections

or questions regarding this document, please ad-

dress these citing the following subject to:

[email protected]

The responsible product specialist will take care of

your issue.

Copyingandduplicationoftextsand diagrams as

well as third-party access to this information is

permitted only with the explicit permission of the

company:

Alfred Kärcher GmbH & Co. KG

P O Box 160

D -71349 Winnenden

www.kaercher.com

Danger

Immediate danger that can cause severe injury or

even death.

몇Warning

Possible hazardous situation that could lead to se-

vere injury or even death.

Caution

Possible hazardous situation that could lead to mild

injury to persons or damage to property.

Note

indicates useful tips and important information.

Structure:

–Brush width PW 20: 290 mm

–Brush width PW 30/1: 315 mm

–Drive motor, shielded, with built-in overload fuse.

–Spray, brush, vacuum in one work process.

–Wide spray nozzles ensure an even spray on the

full brush width.

–Quick coupling for easy handling.

–Philips screwdriver, large

–Flat tip screwdriver, large

–Combination pliers

–Open wrench SW 13, 10, 8

–Hexagonal socket wrench SW 5, 4, 3, 2

1 Preface

Subject: Fall 109999

2 Safety instructions

2.1 Hazard levels

3 Technical Features

3.1 Required tools

4 English 5.906-507.0 Rev. 00 (08/10)

1Casing

2 Power cord

3 Spray hose

4 Power switch

5 Running roller

6 Safety switch

7 Mount for swivel arm

8 Valve handle

9 Suction pipe

10Carrying handle

1 Brush roller

2 Spray nozzles

3 Covering plate

4 Brush roller drive

5 Running roller

4 Parts of the system

4.1 PW 20

9 810

4367

5 2

English 5.906-507.0 Rev. 00 (08/10) 5

1 Power switch

2 Holding plate

3 Running roller

4 Safety switch

5 Hood

6Casing

7 Spray hose

8 Valve handle

9 Suction pipe

10Power cord

1 Running roller

2 Brush roller

3 Spray hose

4 Spray nozzle

4.2 PW 30/1

6 English 5.906-507.0 Rev. 00 (08/10)

Danger

First pull out the plug from the mains before carrying

out any tasks on the machine.

1 Fastening screws

2 Covering plate

ÎUnscrew locking screws.

ÎRemove the covering plate.

1 Brush motor

2Swivelarm,right

3 Brush roller drive

4 Brush roller

5 Swivel arm, left

6 Safety switch

7Powerswitch

8 Terminal strip

9 Spray hose

10Spray channel

11Power cord

12Anti-interference filter

ÎPlace the PW 20 on its back and swivel up the

brush roller

ÎUnscrew and withdraw both bolts on the front of

the brush.

ÎRemove the toothed belt.

ÎRemove the brush.

ÎAssembly of the brush in reverse sequence.

1 Brush motor

2 Fastening screw for brush motor

3 Drive pinion

4 Mount for swivel arm

5 Gear belt

6 Cover

7 Spray nozzles

8 Fastening screws for cover

9 Nozzle tube

ÎPlace the PW 20 on its back and swivel up the

brush roller

ÎUnscrew and withdraw both bolts on the front of

the brush.

ÎRemove the toothed belt.

ÎRemove the brush.

ÎUnscrew the fastening screws for the cover.

ÎRemove cover.

ÎRemove the toothed belt, replace if necessary.

ÎRemove the fastening screw of the drive pinion.

5 Basic settings and service procedures

5.1 PW 20

5.1.1 Remove the covering plate

11 1

112

116 7

45 2

8 9 10

5.1.2 Replacing the brush roller - PW 20

5.1.3 Replace the brush motor

198

English 5.906-507.0 Rev. 00 (08/10) 7

ÎRemove the connecting cable from the brush mo-

tor.

ÎUnscrew the fastening screws (2x) for the brush

motor.

ÎRemove the brush motor.

ÎInstall the new brush motor in reverse sequence.

1 Brush motor

2 Anti-interference filter

3 Power cord

4 Clamp for mains cable

5 Power switch

6 Safety switch

7 Terminal strip

ÎRemove the clamp for mains cable.

ÎUnscrew the ground cable (protective conductor)

from the terminal strip.

ÎRemove the phase and the zero conductor from

the terminal strip.

ÎThread the mains cable through the grommet.

ÎInstall the new mains cable in reverse sequence.

ÎRemove the connecting cable of the noise filter on

the brush motor and unscrew it from the terminal

strip.

ÎReplace the interference filter.

ÎConnect the new noise filter.

ÎRemove the connecting cable from the appliance

switch/safety switch.

ÎReplace the appliance switch, safety switch.

ÎConnect the appliance switch, safety switch.

1 Brush roller

2 Brush roller cover

3 Fastening screws

ÎPlace the PW 30/1 on its back.

ÎUnscrew locking screws.

ÎRemove the brush roller cover plate.

1 Toothed belt cover

2 Fastening screws

ÎUnscrew locking screws.

ÎRemove cover.

5.1.4 Replacing the mains cable

5.1.5 Replace the interference filter

5.1.6 Replace the appliance switch, safety switch

14 26 35

5.2 PW 30/1

5.2.1 Replacing the brush roller

8 English 5.906-507.0 Rev. 00 (08/10)

1 Toothed wheel, brush roller

2 Fastening screw, brush roller

3 Gear belt

4 Toothed drive wheel

ÎRemove the fastening screw from the brush roller.

1 Toothed wheel, brush roller

2 Gear belt

3 Toothed drive wheel

ÎRemove the toothed belts from the toothed

wheels.

ÎPull the brush roller out of the brush head.

ÎInstall the new brush roller in reverse order.

ÎInsert the brush roller into the guide bore of the

brush roller cover plate.

1 Elongated hole

2 Toothed wheel, brush roller

ÎWatch for the correct seating of the threaded

sleeve in the elongated hole when installing the

brush roller.

ÎScrew in the fastening screw of the brush roller.

English 5.906-507.0 Rev. 00 (08/10) 9

1 Fastening screw, brush roller

ÎTension the toothed belt at the fastening screw

and tighten the fastening screw using suitable

tools.

ÎScrew in the toothed belt cover.

1 Toothed belt cover

2 Fastening screws

ÎUnscrew locking screws.

ÎRemove cover.

ÎRemove the fastening screw from the brush roller.

1 Toothed wheel, brush roller

2 Gear belt

3 Toothed drive wheel

ÎRemove the toothed belts from the toothed

wheels.

ÎPull the brush roller out of the brush head.

5.2.2 Replace the motor.

10 English 5.906-507.0 Rev. 00 (08/10)

1 Motor holder

2 Fastening screws, motor support

ÎUnscrew locking screws.

1 Motor

ÎCarefully remove the motor from the casing.

1 Connector

2 Motor connection plug

3 Cable connector screw, noise filter

4 Anti-interference filter

ÎRemove the connector from the motor.

ÎPull the motor connection plug from the motor.

ÎUnscrewthecableconnectorscrewfromthenoise

filter on the motor.

1 Protective cap (2x)

2 Motor fastening screws (2x)

ÎRemove the protective caps from the motor fas-

tening screws.

ÎUnscrew the motor fastening screws.

1 Toothed drive wheel

2 Grub screw (2x)

ÎLoosen both grub screws from the toothed drive

wheel.

ÎPull the toothed drive wheel for the motor axle.

ÎSeparate the motor from the motor support.

ÎReplace the motor in reverse order.

Note

Prior to fastening the motor support, clean the dirt off

the seal rubber.

ÎTension the toothed belt as described in Chapter

5.2.1.

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