Karcher HKF 50 E: Contents Environmental protection

English

 11

Please read and comply with 

these instructions prior to the 

initial operation of your appliance. Retain 

these operating instructions for future refer-

ence or for subsequent possessors.

– Before first start-up it is definitely neces-

sary to read the operating instructions 

and safety indications Nr. 5.951-949!

– In case of transport damage inform ven-

dor immediately

Environmental protection

11

Symbols in the operating instructions 11

Proper use

11

Function

11

Safety instructions

11

Technical specifications

14

Start up

15

Operation

16

Shutting down

16

Maintenance and care

16

Troubleshooting

17

Accessories

18

CE declaration

18

Warranty

18

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Danger

indicates an immediate threat of danger. 

Failure to observe the instruction may result 

in death or serious injuries.

몇

Warning

indicates a possibly dangerous situation. 

Failure to observe the instruction may result 

in light injuries or damage to property.

Note

indicates useful tips and important informa-

tion.

– The interior cleaners HKF 50 are spray 

devices to clean drums and containers.

– The cleaning head is inserted into the 

container through an opening with a 

suitable minimum inner diameter.

– A separate high pressure pump is con-

nected to the interior cleaner via a high 

pressure hose.

Note

The chapter "Specifications" contains a list 

of the permitted cleaning liquids.

Operation outside closed containers and 

with higher pressure and temperatures than 

those listed in the "Specifications" is prohib-

ited.

– The interior cleaner consists of a drive 

unit, a support pipe and the cleaning 

head. The nozzles on the cleaning head 

turn around two axles and therefore 

touch every place in the container.

– The cleaning head is turned by an elec-

tric or compressed air motor. The speed 

is independent of the pressure and the 

volume of cleaning liquid. With electric 

drives, the speed can be set to con-

stant, with compressed air drives, the 

speed can be adjusted via the com-

pressed air.

– Please follow the national rules and reg-

ulations of the respective country.

– Please follow the safety instructions 

which are attached to the used deter-

gents (normally on the packing label).

– In order to avoid improper operation, the 

system may only be used by persons 

who have been instructed in handling 

the system or have proven qualification 

and expertise in operating the system or 

have been explicitly assigned the task 

of handling the system.

– The operating instructions must be ac-

cessible for every user.

Wrong operation or misuse are hazardous 

to the operator and other persons on ac-

count of:

– high pressure

– high electrical voltages (HKF 50 E)

– Cleaning agents or used cleaning liquid

– Danger of explosion

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Danger

–

Danger of crushing by the interior clean-

er. Only use the interior cleaner's drive 

in closed containers.

–

Danger of injury by high pressure jet - 

therefore only use interior cleaner inside 

closed containers.

–

Health hazards posed by residue in 

containers that are cleaned or by the 

cleaning liquid used. Therefore, the list-

ed protective measures must be ad-

hered to.

–

Risk of injury due to interior cleaner top-

pling over at low submerge depth. In 

this case, the interior cleaner must be 

supported.

–

Risk of injury by toppling container - 

therefore use extra support for contain-

er and interior cleaner.

–

Danger of injury by interior cleaner slid-

ing off; therefore tighten interior cleaner 

with clamping ring.

Risk of explosion and fire when using clean-

ing agents and residue in the containers. 

Please contact Kärcher in such cases to 

find out, how the respective cleaning 

agents should be used.

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Warning

In order to avoid damage to the cleaning 

head, ensure a free layout inside the con-

tainer. The cleaning head must never touch 

the container wall.

Depending on the concentration and health 

risk of the used cleaning liquid, wear the fol-

lowing protective gear:

– Liquid resistant protective clothing

– Protective glasses or face shield

– Protective gloves

– Protective shoes

Approved operators are persons who are at 

least 18 years old and are able to operate 

this system (exceptions: apprentices, see 

BGV D15 §6).



Switch off the separate high pressure 

pump.



Interior cleaners with electric drives: 

Pull out the mains plug.



Interior cleaners with compressed air 

drives: Shut off the compressed air sup-

ply.



Shut off the cleaning liquid supply.

Contents Environmental protection

The packaging material can be 

recycled. Please do not throw 

the packaging material into 

household waste; please send 

it for recycling.

Old appliances contain valua-

ble materials that can be recy-

cled; these should be sent for 

recycling. Batteries, oil, and 

similar substances must not 

enter the environment. Please 

dispose of your old appliances 

using appropriate collection 

systems.

Symbols in the operating in- structions Proper use

Cleaning head

Minimum contain-

er opening

HKF 50

55 mm

Please do not allow cleaning liquids to 

enter the environment. Protect the 

ground and dispose of used oil in an en-

vironmentally-clean manner.

Please do not let mineral oil contaminat-

ed waste water reach soil, water or the 

sewage system.

Function Safety instructions

Personal safety gear

Wear ear plugs to protect 

your ears against hearing 

loss while cleaning parts 

that produce high sound 

levels. 

Approved operators

Behaviour in emergency situations

12 

English

Areas that bear the risk of explosion are di-

vided into zones, according to the frequen-

cy and duration of explosion-risk 

atmosphere in BetrSichV and EN 1127-1.

The definition of the zones lies in the re-

sponsibility of the operator.

Tips for zoning are included in the Be-

trSichV, EN 1127-1, BGR 104 – Ex-guide-

line of BG Chemie and in the EN 60079-10.

–

Zone 0

Zone 0 is an area where dangerous ex-

plosion-risk atmosphere is present as a 

mixture of air and flammable gases, va-

pors or mists at all times, across long 

time periods or frequently.

–

Zone 1

Zone 1 is an area where (during normal 

operation) dangerous explosion-risk at-

mosphere is present as a mixture of air 

and flammable gases, vapors or mists 

from time to time.

–

Zone 2

Zone 2 is an area where (during normal 

operation) dangerous explosion-risk at-

mosphere as a mixture of air and flam-

mable gases, vapors or mists is not 

normally present and if present, only for 

a short time.

–

Zone 20

Zone 20 is an area where dangerous 

explosion-risk atmosphere is present as 

a cloud of flammable dust contained in 

the air, at all times, across long time pe-

riods or frequently.

–

Zone 21

Zone 21 is an area where (during nor-

mal operation) dangerous explosion-

risk atmosphere is present as a cloud of 

flammable dust in the air from time to 

time.

–

Zone 22

Zone 22 is an area where (during nor-

mal operation) dangerous explosion-

risk atmosphere as a cloud of flamma-

ble dust is not normally present and if 

present, only for a short time.

1 The interior cleaner must only be used 

in Zone 0 if the containers are at least 1 

m in diameter with the usual container 

height or do not exceed a comparable 

container size.

2 The mass content of non-diluted solid 

substances in the cleaning liquid must 

not exceed 1%.

3 The interior cleaner must be ground 

electro-statically.

4 The pump for the cleaning liquid must 

only be operated while it is filled with flu-

id.

5 The nominal pressure of the pump must 

not exceed 5 MPa when operating with 

solvents.

6 The compressed air motor must only be 

operated once the interior cleaner has 

been filled with cleaning liquid.

7 The speed of the cleaning head must 

not exceed 40 rpm.

8 The operating temperature of the clean-

ing liquid water with cleaning agents 

must not must not exceed 95 °C.

9 The operating temperature of the clean-

ing liquid solvents, brines and acids 

must not must not exceed 20 °C.

10 The interior cleaner must be checked 

for flawless condition and smooth func-

tion after a certain operating time has 

passed (incl. bearing bushings and 

drive-side seal for wear and tear and 

leakage). If applicable, a repair needs to 

be conducted.

11 The interior cleaner must only be used 

with cleaning liquids and in such media, 

whose affect on the materials is not 

damaging.

12 Cleaning liquids that contain flammable 

solvent particles, must comply with the 

ignition groups IIA and IIB. Solvents of 

the ignition group IIC must not be 

sprayed.

13 The interior cleaner must not be con-

stantly located in Zone 0, but only dur-

ing the actual container cleaning. The 

operating guidelines as per BetrSichV 

as well as other national guidelines 

must be adhered to. Take into consider-

ation, that the mixture of the container/

interior cleaner brought into the contain-

er is not resistant to breakdown from 

flames.

14 Hoses must be conductive (electrostati-

cally) (resistance R < 1000 Ohm).

15 Only cleaning agents with a conductivity 

G > 1000 pS/m may be used.

16 All parts that touch media must be con-

nected to the grounding system.

Zone layout

Special conditions in the Ex area

English

 13

A Zone 1/22

B Category 2/3

C Zone 0/20

D Category 1

Basic sketch - zone layout