Nozzle Selection; Detergent Metering - Kärcher HDS 891 ST Manual Del Usuario

HDS 891 / 1291 ST
When the handgun is opened again within the
adjustable availability time (2–5 minutes) the
unit automatically restarts.
If the availability time is exceeded, the safety
timer switches off the pump and burner. The
availability time indicator light (F) goes out.
To restart the unit, turn the main switch to the
"0" position, and switch on again. If the unit is
operated by remote control, it can be restarted
by means of the equivalent switch on the
remote control unit.

6. Nozzle Selection

Vehicle tyres should only be cleaned with a fan-
jet nozzle (25°) and from a minimum distance of
30 cm. Under no circumstances should tyres
be cleaned with the pencil jet.
The following nozzles are available for other
cleaning tasks:
Degree Nozzle
of soiling
HDS 891 ST
Heavy 00060
Medium 25060
Light 40060
HDS 1291 ST
Heavy 00080
Medium 25080
Light 40080
5.959-742 A 2009651 (11/04)
B. Operating Data
Spray Part Pres-
angle No. sure
6.415 bar
0° -257
25° -295
140
40° -301
0° -150
25° -152
140
40° -153
If the pipeline is longer than 20 m, or more than
2 x 10 m of high-pressure hose is employed,
the following nozzles should be used:
Degree
of soiling
Heavy
Medium
Light
Heavy
Medium
Light

7. Detergent Metering

Detergents facilitate the cleaning task.
They are drawn into the unit from an external
Re-
coil
detergent tank.
N
In its basic configuration, the unit is equipped
with one detergent metering valve (C).
A second metering device (metering valve D)
is available as an optional accessory. This
44
enables two different detergents to be drawn
into the unit.
The dosage is adjusted by means of the
detergent metering valves (C or D) on the
instrument panel. The selected value
55
corresponds to the percentage of detergent
applied.
The outer scale applies when an undiluted
detergent is used (100 % CHEM).
The inner scale applies when a pre-diluted
1+3 solution is used (25 % CHEM + 75 %
Water).
Nozzle Spray Part
angle No.
6.415
HDS 891 ST
0075 0° -419
2575 25° -421
4075 40° -422
HDS 1291 ST
0010 0° -082
2510 25° -252
4010 40° -253
English
Pres- Re-
sure coil
bar N
100 37
100 46
B4