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English

8

GFCI INSTRUCTIONS

„

STEP 1:

 Plug the Ground Fault Circuit 

Interrupter (GFCI) into a working outlet.

„

STEP 2:

 Press ’’TEST’’, then press 

’’RESET’’ to assure proper connection to 
power.
Note: The actual appearance of the GFCI 
may be different from this illustration.

Water connection/Suction feed 
operation

Connection to water main

Caution!

Pay attention to the regulations of the 

water supply company; according to DIN 
1988, the unit may not be connected direct to 
the public drinking water supply. A short-term 
connection via a non-return valve 
(Order no. 6.412-578) is allowed.

For connected loads see Technical Specifica-
tions.

„

Connect a supply hose (not supplied) to the 
water outlet on the unit and to the water in-
let (e.g. water tap).

„

Open water inlet.

Suctioning water from an open container

„

Screw on the suction hose (order no. 
4.440-270) on the water connection.

„

Attach the filter (order no. 4.730-012) at the 
suction hose.

„

Vent the unit before using.

„

To evacuate air from the unit, unscrew the 
nozzle and leave the unit running until wa-

ter exits with no air bubbles. If necessary 
allow unit to continue running for 10 sec-
onds and then switch off. Repeat this pro-
cedure several times.

„

Switch off the unit and screw the nozzle 
back on.

Operating the unit

Danger!

Observe the relative safety regulations 

when using the unit at filling stations or other 
high-risk areas.

Caution!

Only clean engines in places which 

have appropriate oil separators (protection of 
the environment).

Caution!

Only wash animals with the low-pressure 

fan jet (see "Selecting the type of spray").

Operating with high pressure

The unit is equipped with a pressure switch. 
The motor only starts up when the lever is re-
tracted.

„

Unwind the high-pressure hose fully from 
the cable drum.

„

Set the unit switch to "I".

„

Unlock the hand-held spray gun and retract 
the lever of the gun.

„

Adjust operating pressure and flow rate (+/
–) by rotating the pressure/flow control (in-
finitely variable). 

Selecting the type of spray

The handgun must be closed.

„

Rotate the housing of the nozzle until the 
desired symbol corresponds with the mark-
ing.

„

Select pencil jet or fan jet by contactless 
changeover:
rotate the spray lance, which is pointing 
down at an angle of approx. 45°, to the left 
or right.

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Summary of Contents for HD 3.0/20-4 M Ea

Page 1: ...www kaercher com HD 3 0 20 4M Ea 5 961 886 2012812 03 06...

Page 2: ...3...

Page 3: ...ger Gun Safety Lock PREVENTS the trigger from accidentally being engaged This safety feature DOES NOT lock trigger in the ON position Do not use extension cord with this unit GROUNDING INSTRUCTIONS Th...

Page 4: ...ne or any part of the body In case of penetration seek medical aid immediately This system is capable of producing 13700 kPa 2000 PSI to avoid rupture and injury do not operate this pump with componen...

Page 5: ...special note of the accompanying booklet Safety Instructions for High Pressure Clean ers No 5 951 949 Use of the cleaner Use this unit exclusively for cleaning with high pressure jet and deter gent e...

Page 6: ...g it up Wind the high pressure hose up in even layers on the hose reel by turning the crank handle Select the rotational direction so that the high pressure hose does not kink Switching on the unit El...

Page 7: ...ing until wa ter exits with no air bubbles If necessary allow unit to continue running for 10 sec onds and then switch off Repeat this pro cedure several times Switch off the unit and screw the nozzle...

Page 8: ...entration Recommended cleaning methods Spray detergent with low pressure jet spar ingly over the dry surface to be cleaned and let it take effect but not dry out Spray off rinse off the loosened dirt...

Page 9: ...eplace a damaged high pressure hose without delay Check unit pump for any leaks Three drops per minute are allowable and can appear on the underside of the unit Seek the help of Customer Service if le...

Page 10: ...gent Evacuate air from the cleaner see Switch ing on the unit Seek the help of Customer Service if nec essary Detergent is not being drawn in Set nozzle to Chem Check detergent suction hose with filte...

Page 11: ...tainer 20 C m 0 5 Supply pressure max psi MPa 145 1 Performance data Operating pressure psi MPa 435 2000 3 13 7 Max operating overpressure safety valve psi MPa 2200 15 2 Flow rate gpm l min 1 3 3 4 9...

Page 12: ......

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