Commissioning And Operation; Before Startup; Water Supply - Kärcher K 2.91 MD Operating Instructions Manual

Commissioning and operation

Before Startup

Assemble appliance as shown on
page 10.
Note: When the appliance is delivered, the
HP hose and handgun are not attached.
Please mount these before using the appli-
ance for the first time.
Push out the safety clip in the trigger
gun using e.g. a small screwdriver.
Join HP hose and trigger gun together.
Push clip in until it engages and check
that it is securely fastened by pulling on
the high pressure hose.

Water supply

The device is not suitable for being
operated in the drinking water net-
work. A suitable system separator
as per EN 12729 type BA is needed
to operate it on the drinking water network.
Water supply from mains
For connection values, see type plate/tech-
nical data.
Observe regulations of water supplier.
Use a fibre-reinforced hose (not included)
with a standard coupling:
- Minimum diameter, 1/2 inches (13 mm)
- Minimum length, 7.5 m
Screw the coupling unit (supplied) to
the water connection on the appliance.
Push the water supply hose onto the
coupling unit, then connect it to the tap.
Caution
Never operate the high-pressure cleaner
when the tap is turned off as dry running will
damage the High pressure pump.
If the water supply is not clean, the Kärcher
water filter must be used (special accesso-
ry - order No. 4.730-059).
Start up
Screw high pressure hose on to high
pressure outlet on appliance.
Push the appropriate spray lance on to
6
English
the trigger gun and fasten it by turning it
through 90°.
Open tap.
Plug in the main plug.
Set main switch to "I/ON".
Press safety catch on the trigger gun to
release it and pull lever.
High pressure operation
Risk of injury
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 hold-
ing the trigger gun and spray lance firmly.
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.
Spray lance with dirt blaster
For strong contaminations.
Operation with detergent
Note
Detergent can only be added when the appli-
ance is being operated in low pressure mode.
Use spray lance with pressure regula-
tion (Vario Power).
Turn the spray lance to "Mix" position -
low pressure.
Detergent infeed from detergent tank
Fill the detergent tank with detergent
tablet and water or detergent
concentrate and water (Observe
metering recommendations on the
packaging label of the detergent.)
During low pressure operation, deter-
gent is automatically drawn in from the
filled detergent tank.
Recommended Cleaning Method
1 Spray a small dose of the detergent on
the dry surface, and allow it to react
(make sure the detergent does not dry
up).