Water Supply - Kärcher k 7.91 m Betriebsanleitung

Water supply

According to the applicable regula-
tions, the appliance must never be
used on the drinking water supply
without a system separator. Use a
suitable system separator manufactured by
KÄRCHER; or, as an alternative, a system
separator as per EN 12729 Type BA. Water
flowing through a system separator is con-
sidered non-drinkable.
Caution
Always connect the system separator to
the water supply, never directly to the appli-
ance!
Note: Impurities in the water can damage
the high-pressure pump and accessories.
For protection, the use of the KÄRCHER
water filter (optional accessory, order no.
4.730-059) is recommended.
Water supply from mains
Observe regulations of water supplier.
For connection values, see type plate/tech-
nical data.
 Use a fibre-reinforced water hose (not
included) with a standard coupling.
(Minimum diameter 1/2 inch (13 mm),
minimum length 7.5 m).
 Screw the coupling element to the wa-
ter connection on the appliance.
 Push the water supply hose onto the
coupling unit, then connect it to the wa-
ter supply.
Drawing in water from open reservoirs
This high-pressure cleaner is suited to work
with the KÄRCHER suction hose with back-
flow valve (Optional accessory, order no.
4.440-238) to draw in surface water, e.g.
from water butts or ponds (see specifica-
tions for max. suction height).
 Fill the KÄRCHER suction hose with
backflow valve with water, screw to wa-
ter supply and hang into the water butt.
 Separate the high pressure hose from
the high pressure connection of the ap-
pliance.
 Switch the appliance on (I/ON) for a
max. of 2 minutes and wait until the wa-
18
ter exits the high-pressure connection
without bubbles.
 Turn off the appliance "0/OFF".
Caution
Dry runs lasting longer than two minutes
lead to damages to the high pressure
pump. If the appliance does not build up
pressure within two minutes, switch it off
and proceed as instructed in the Chapter
"Troubleshooting".
Illustration
 Push the high pressure hose into the
quick coupling until it locks audibly.
Illustration
 Push the high pressure hose into the
trigger gun until it locks audibly.
Note: Make sure the connection nipple
is aligned correctly.
Check the secure connection by pulling
on the high pressure hose.
 Push the spray lance into the trigger gun
and fasten it by turning it through 90°.
 Completely open the water tap.
 Insert the mains plug into the socket.
 Turn on the appliance "I/ON".
Danger
The trigger gun is subjected to a recoil force
when the water jet is discharged. Make
sure that you have a firm footing and are
also holding the trigger gun and spray lance
firmly.
Illustration
 Unlock the lever on the trigger gun.
 Pull on the lever of the trigger gun; the
device will switch on.
Note: Release the lever of the trigger gun;
the device will switch off again. High pres-
sure remains in the system.
Spray lance with pressure regulation
Carrying out the most common cleaning
tasks. The work pressure can be stageless-
ly regulated between "Min" and "Max".
 Release the lever on the trigger gun.
 Turn the spray lance to the desired po-
sition.
– 9
EN
Start up
Operation