Kärcher NT 27/1 Bedienungsanleitung

English 5.906-472.0 Rev. 00 (08/08) 1

NT 27/1, -Advanced,

NT 27/1 Me, -Me Advanced

NT 48/1

Service Manual

2 English 5.906-472.0 Rev. 00 (08/08)

Contents

1 Preface 3

2 Safety instructions 3

2.1 Hazard levels 3

3 Technical Features 3

3.1 Proper use 3

3.2 General 3

3.3 Filter and vacuum system 3

3.4 Electrical system 3

4 Parts of the system 4

4.1 View of NT 27/1 4

4.2 View of NT 48/1 5

4.3 Suction head removed 6

4.4 Dirt water drain hose on the NT 48/1 6

5 Basic settings and service procedures 7

5.1 Remove cartridge filter 7

5.2 Replace seal 7

5.3 Remove the swimmer 7

5.4 Separate the suction turbine casing from the suction head casing 8

5.5 Replace appliance switch 8

5.6 Replacing the suction turbine 9

5.7 Replacing the abrasive coals of the suction turbine 11

6 Circuit diagram 12

6.1 Circuit diagram 0.088-563.0 12

7 Troubleshooting 13

8 Specifications 13

9 Special tools 13

English 5.906-472.0 Rev. 00 (08/08) 3

Good service work requires extensive and practice-oriented train-

ing 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 en-

hancements and their servicing.

If you should require supplements, have corrections or questions

regarding this document, please address these citing the following

subject to:

[email protected]

The responsible product specialist will take care of your issue.

Copying and duplication of texts and 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

Note

Indicates useful tips and important information about the product.

– The machine is meant for dry and wet cleaning of floors and

walls.

– This appliance is suited for the commercial use, e.g. in hotels,

schools, hospitals, factories, shops, offices, and rental compa-

nies.

– Storage compartments for tools on the suction head.

– Container capacity:

NT 27/1 = 27 Liter

NT 48/1 = 48 Liter

– Clip system for rapid change or connection of accessories.

– Chassis:

NT 27/1 = five swivel casters

NT 48/1 = two swivel casters, two impellers

– All around ramming protection.

– On the models NT 27/1, NT 27/1 Advanced and NT 48/1, the

dirt containers are made of plastic.

– On the models NT 27/1 ME and NT 27/1Me Advanced, the dirt

containers are made of stainless steel.

– Suction hose connection with bayonet system.

– Additional paper filter bag to vacuum fine dust with closable

suction opening for dust-free disposal.

– Cartridge filter, must always be installed during dry vacuuming.

– The models NT 27/1 and NT 27/1 Me are equipped with a

standard cartridge filter.

– The models NT 27/1 Advanced, NT 27/1 Me Advanced and NT

48/1 are equipped with a cartridge filter with a larger surface.

– 1,380 Watts maximum pickup.

– 7.5 m mains cable.

– Bypass suction turbine.

1 Preface

Subject: Case 106770

2 Safety instructions

2.1 Hazard levels

3 Technical Features

3.1 Proper use

3.2 General

3.3 Filter and vacuum system

3.4 Electrical system

4 English 5.906-472.0 Rev. 00 (08/08)

1 Clip system

2 Handle

3 Suction hose

4 Carrying handle

5 Cable hook

6 Storage compartment for tools

7 Lock for suction head (2x), (as of July 2008)

8 Lock for suction head (2x)

9 Accessory mount

10 Dirt receptacle

11 Swivel casters (5x)

12 Floor nozzle

13 Suction tubes 2 x 0.5 m

14 Bayonet connector at suction hose

15 Suction hose connection

16 Suction head

17 Appliance switch (S1)

4 Parts of the system

4.1 View of NT 27/1

English 5.906-472.0 Rev. 00 (08/08) 5

1 Carrying handle

2 Cable hook

3 Storage compartment for tools

4 Lock for suction head (2x), (as of July 2008)

5 Intake for dirt water drain hose

6 Lock for suction head (2x)

7 Dirt water drain hose

8 Dirt receptacle

9 Accessory mount

10 Impeller (2x)

11 Guiding roll with fixed position brake

12 Steering roller

13 Suction hose

14 Bayonet connector at suction hose

15 Suction hose connection

16 Suction head

17 Appliance switch (S1)

4.2 View of NT 48/1

6 English 5.906-472.0 Rev. 00 (08/08)

ÎOpen the locks on the suction head and remove the suction

head (3) from the dirt container (6).

1 Fastening nut, cartridge filter

2 Cartridge filter

3 Suction head

4 Seal

5 Suction air guide

6 Dirt receptacle

7 Suction hose connection

The NT 48/1 is equipped with a dirt water drain hose (2). The dirt

water can be drained from the dirt container into a drain chute via

this dirt water drain hose.

ÎPull the dirt water drain hose (2) off of the intake (1) and place

it into a drain chute.

ÎLet the dirt water drain completely.

ÎAfter emptying, reinsert the dirt water drain hose (2) into the in-

take (1).

1 Intake for dirt water drain hose

2 Dirt water drain hose

4.3 Suction head removed 4.4 Dirt water drain hose on the NT 48/1

English 5.906-472.0 Rev. 00 (08/08) 7

After a certain amount of use, the cartridge filter is dirty and must

be cleaned or replaced as needed.

ÎRemove the suction head (see chapter 4.2).

ÎUnscrew the fastening nut (1).

ÎRemove the cartridge filter (2) toward the top.

ÎInstall the cleaned or new cartridge filter in reverse order.

The seal (arrow) in the suction head can be replaced as follows if

needed.

ÎRemove the suction head (see chapter 4.2).

ÎRemove the seal from the suction head and insert new seal.

Remove the swimmer as follows to clean it.

ÎRemove the cartridge filter (see chapter 5.1).

ÎRemove the fastening screws (3).

ÎRemove the swimmer casing (1).

ÎRemove the swimmer (2) from the swimmer casing. The swim-

mer can now be cleaned or replaced if necessary.

Note

When installing the swimmer (2) make sure that the open side of

the swimmer is located inside the swimmer casing. If the swimmer

(2) is inserted the wrong way, it will lose its efficiency. This can

cause damages to the appliance.

1 Swimmer casing

2Float

3 Fastening screws (2x), swimmer casing

5 Basic settings and service procedures

5.1 Remove cartridge filter

5.2 Replace seal

5.3 Remove the swimmer

8 English 5.906-472.0 Rev. 00 (08/08)

ÎRemove the suction head (see chapter 4.2).

ÎRemove the fastening screws (1).

ÎRemove the suction turbine casing (2) from the suction head

casing (6).

1 Fastening screws (4x), suction turbine casing

2 Suction turbine housing

3 Insulation

4 Suction turbine (M1)

5 Appliance switch (S1)

6 Suction head casing

If the appliance switch (3) is defective, it can be replaced as fol-

lows.

ÎSeparate the suction turbine casing from the suction head cas-

ing (see Chapt. 5.4).

ÎPull the appliance switch (3) out of the holder (7).

ÎPull all four connector plugs (5, 6) off of the appliance switch

(3).

ÎInstall the new appliance switch in reverse order.

Note

Wheninstallingtheappliance switch,makesurethat allconnecting

cablesareroutedin theirrespective cable guides (arrows) and that

the de-interference capacitor (2) is installed in the holder (7).

5.4 Separate the suction turbine casing from the suc-

tion head casing 5.5 Replace appliance switch

English 5.906-472.0 Rev. 00 (08/08) 9

1 Connecting cable, suction turbine (M1)

2 De-interference capacitor (C1)

3 Appliance switch (S1)

4 Mains cable

5 Connector plug (2x), suction turbine and de-interference ca-

pacitor

6 Connector plug (2x), mains cable

7 Bracket

ÎSeparate the suction turbine casing from the suction head cas-

ing (see Chapt. 5.4).

ÎPull the appliance switch (3) out of the holder (4).

ÎPull the connecting cable (2) of the suction turbine (6) off of the

appliance switch (3).

ÎPull the connecting cable of the suction turbine out of the cable

slots (arrows).

ÎRemove the cover (5) from the suction turbine casing.

ÎRemove the fastening screws (8) of the suction channel cover

(7).

ÎRemove the suction channel cover (7).

5.6 Replacing the suction turbine

10 English 5.906-472.0 Rev. 00 (08/08)

ÎThe suction turbine (6) can be removed for cleaning or replace-

ment.

Note

When installing the suction turbine, watch for correct placement.

The protrusions on the suction turbine must be aligned with the

screw heads (see arrows).

Observe the following when installing the suction channel

cover (7):

The suction channel cover (7) has a semi-circular recess on its

edge.

There is a semi-circular stop in the suction turbine casing.

ÎPlace the suction channel cover (7) on the suction turbine cas-

ing, so that the semi-circular stop of the suction turbine casing

rests in the semi-circular recess of the suction channel cover

(7).

1 Insulation

2 Connecting cable, suction turbine (M1)

3 Appliance switch (S1)

4 Bracket

5Cover

6 Suction turbine (M1)

7 Suction channel cover

8 Fastening screws (4x), suction channel cover

9 Suction channel

10 Insulation

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