Karcher IB 15-120: Start up

     - 

4

5 Indicator lamp - jet pistol

green: Jet pistol OK

orange: The trigger of the jet pistol was 

activated during the switch-on process

red: Jet pistol disconnected or control 

line damaged

6 Display field

1 Nozzle

2 Jet pistol

3 Coupling spray agent hose

4 Coupling of the control cable

5 Safety lever

6 Triggering lever

7 Operating type switch

Position "1": Compressed air jet

Position "2": Dry ice jet (compressed air 

and dry ice pellets)

1 Nozzle

2 Jet pistol

3 Triggering lever

4 Safety button

5 Coupling spray agent hose

6 Coupling of the control cable

7 Key for the dry ice dosing on/off

Illuminates red when the dry ice dosag-

ing is switched off

8 Increase the dry ice dosing

9 Key "increase jet pressure"

10 Key "decrease jet pressure"

11 Decrease the dry ice dosing

The case serves the storage of the nozzles 

and the associated tools.

1 Lock

2 Carrying handle

3 Unlocking



Open locks. 



Swivel the lid downwards.

Caution

Risk of damage, do not place heavy objects 

on the opened lid.



Push the unlocking devices and re-

move the case.



Turn the case so that the closures are 

pointing upwards.



Place one side of the case on the holder 

and lock it place.



Press the case against the appliance 

and lock the opposite holder in place.



Danger

Risk of injury on account of flying dry ice 

pellets. 

While preparing the appliance, check and 

ensure that all components, especially the 

spray agent hose are in proper condition. 

Replace damaged components with de-

fect-free ones.

Clean dirty components and ensure that 

they are in proper working condition.



Place the machine on a horizontal, 

even surface and block the parking 

brakes of the steering rollers.

Note:

The spray agent hose can be covered with 

a protective hose to protect it against wear 

and soiling. If necessary, push the protec-

tive hose over the spray hose prior to con-

necting it.



Connect the spray agent hose to the 

machine and secure it. 



Connect the jet pistol to the spray agent 

hose and secure it. 



Connect the control cable to the appli-

ance. 



Connect the control cable to the appli-

ance. 

Note

The choice of the nozzle depends on the 

material of the object to be cleaned and the 

contamination.

The available air volume also significantly 

influences the selection of the nozzle.

All nozzles can be screwed on top of the 

threading of the jet pistol without using any 

tools. The threaded surfaces on the nozzle 

are to be used to loosen tight nozzles using 

a spanner.

Caution

Risk of cold welding Smear the enclosed 

grease on the nozzle threading before in-

stalling it.

The following table shows the air consump-

tion with different nozzles.

Each nozzle is marked with an air volume 

index XS - XXL.

By means of the nozzle table the air con-

sumption for each nozzle can be deter-

mined.

Jet equipment

Jet gun

Jet pistol Advanced (option)

Case for accessories

Opening the case

Separating the case from the appliance.

Attaching the case to the appliance.

Start up

Nozzles

Selecting the nozzle

18 EN

     

- 

5

Apart from the round jet nozzle delivered 

with the machine, other round jet nozzles 

with varying cross-sections are available as 

accessories.

1 Round jet nozzle, short

2 Round jet nozzle, long

3 Round jet nozzle, extra long



Place the round jet nozzle on the 

threaded support of the jet pistol and 

tighten it by hand. 

1 Diffuser

2 Union joint

3 Nozzle insert

The flat jet nozzle consists of a nozzle in-

sert and a diffuser. Nozzle inserts with var-

ying cross-sections are available as 

accessories. 



Place the nozzle insert on the threaded 

support of the jet pistol and tighten it by 

hand. 



Place the diffuser on the nozzle attach-

ment. 



Turn the diffuser in such a way that the 

flat jet is properly aligned with the jet 

pistol. 



Tighten the union joint by hand.

The scrambler crushes the dry ice pellets 

and is mounted between the jet pistol and 

the nozzle. 

The alignment of the 4 holes plates in the 

scrambler indicates the degree of commi-

nution.

Select the degree of comminution:

1 Screw connections

2 Magazine

3 Hole plate



Remove the screw connection.



Remove the magazine with hole plates.



Align the hole plates, as shown above, 

in the magazine (3 possibilities). The 

above specifications in the illustration 

refer to the size of the permeation open-

ings.



Insert the magazine with hole plates 

into the scrambler.



Unscrew the screw connection and 

tighten it.

Area capacity

Jet aggressive-

ness

very low

low

medium

high

very high

Pressure (bar)

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Nozzle size

XS

Ø5 mm

0,40

0,70

0,90

1,10

1,30

1,60

1,80

2,00

2,30

--

--

--

--

--

--

S

Ø6 mm

0,70

1,05

1,45

1,80

2,07

2,40

2,78

3,14

3,48

3,78

4,13

4,35

4,70

5,10

5,40

M

Ø7 mm

0,93

1,38

1,85

2,28

2,64

3,05

3,63

4,03

4,57

4,80

5,30

5,80

6,22

6,65

7,15

L

Ø8 mm

1,09

1,64

2,26

2,78

3,20

3,79

4,40

4,95

5,45

5,90

6,40

7,15

7,67

8,15

8,80

XL

Ø9 mm

1,50

2,16

2,88

3,50

4,03

4,60

5,41

6,01

6,53

7,27

8,08

8,70

9,28

9,80

10,40

XXL

Ø10 mm 1,52

2,20

2,97

3,66

4,27

5,00

5,82

6,52

7,40

8,00

8,90

9,50

10,05 10,70 11,30

Air consumption in m

3

/min

m

3

/min

...1

Industrial compressed air 

service network

Entry-level compressor

e.g. Käser M 17, 

Compair C 14

1...2

Industrial compressed air 

service network

small compressor

e.g. Käser M 31, 

Compair C 20GS

2...3

medium compressor

e.g. Käser M 57, 

Compair C 35

3...5

5...7

medium compressor

e.g. Käser M 80, 

Compair C 55

7...10

large compressor

e.g. Käser M 122, 

Compair C 105

10...

extra large compressor

e.g. Käser M 250, 

Compair C 200

Round jet nozzle

Flat jet nozzle

Scrambler (accessory)

19 EN