Kärcher HDS 9/50 De Tr1 Service Manual page 150

Measure water temperature
 Install the shut-off valve with thermometer (special tool)
on the appliance outlet.
 Switch on the burner and bring the appliance to working
pressure with full water volume via the shut-off valve.
 Let the device run in burner operation for approx. 5 min-
utes until the maximum water temperature is reached.
 Measure the increase in water temperature (water out-
let temperature minus water supply flow temperature).
Nominal values
Water temperature increase with full load
max. air pressure at the burner cover
Soot value
CO2 exhaust gas
Emission temperature
Adjustment pressure fuel pump
Adjusting the soot value
 If the soot value is too high, then the air flap needs to
be opened further or the fuel pressure needs to be re-
duced.
Adjust the CO value
2
 Adjust the CO
value by moving the air flap. Open the
2
air flap, the CO content is decreasing.
2
NOTE
After finishing the basic adjustment, the fuel pump and the
air flap must be sealed.
150
English 5.906-736.0 Rev. 00 (07/15)
1 Air door, air volume adjustment
2 Stop screw
NOTE
Adjusting the air flaps in the plus direction increases the air
quantity, adjustment in the minus direction reduces the air
quantity.
 Measure the air pressure on the burner cover (special
tool) and adjust it on the air slider.
 Measure the soot value, CO2 content and the exhaust
temperature (special tools, measuring gauges).
Adjusting the fuel pressure
 Set the fuel pressure (and water temperature) via the
set screw.
HDS 9/50 HDS 13/35 HDS 17/20 HDS 13/20
K 70 - 75 70 - 75
mmWS 2,5 - 3,5 3,0 - 5,0
1 1
% 10,0 - 11,5 10,0 - 11,5 10,0 - 11,5 10,0 - 11,5
°C 100 - 180 120 - 180
MPa 1,0 - 1,3 1,0 - 1,3
60 - 65 70 - 75
3,0 - 5,0 3,0 - 5,0
1 1
120 - 180 140 - 220
1,0 - 1,3 1,0 - 1,3