Troubleshooting Guide; Technical Data; Appendix - Kärcher WOMA HP-DG Manual Del Usuario

 Have the product checked for the correct condition
every 12 months.
9.4.2 Changing the cartridge
If additional water is expelled from the bypass line and/or
the relief bores in the product when the spray unit is actu-
ated then the cartridge in the pressure housing must be re-
placed.
A pre-assembled cartridge (material number 9.919-046.0)
may be replaced by untrained technical personnel as fol-
lows.
ATTENTION
Improper installation
Improper installation with damaged or dirty components
can lead to malfunctions and damage to the product.
Perform a visual inspection of all spray device elements
before installation.
All threads must be clean and undamaged.
The sealing surfaces of mating components must not have
any scratches or scoring.
A non-pre-assembled cartridge may only be replaced by
trained technical personnel.
(See illustration on page 2)
1. Release the bypass screw from the pressure housing
and remove together with the cartridge.
2. Remove the spring from the pressure housing and re-
place with a new spring.
3. Disconnect the bypass screw from the cartridge.
4. Remove the seal (O-ring) from the groove in the bypass
screw.
5. Fit the seal (O-ring) in the groove.
6. Fit the bypass screw positively into the pre-assembled
cartridge (material number 9.919-046.0).
7. Coat the thread of the bypass screw with thread instal-
lation paste before installation (see Chapter 12.2 Con-
sumables).
8. Coat the fitting surfaces of the cartridge with anti-seize
installation (see Chapter 12.2 Consumables).
9. Screw the bypass screw with the cartridge into the pres-
sure housing and tighten to a torque of 100 Nm.
10

Troubleshooting guide

10.1 Safety instructions
For safety reasons, malfunctions may only be corrected by
Service personnel from WOMA GmbH or by trained tech-
nical personnel.
11

Technical data

Material number
Operating pressure max.
Medium temperature max.
Flow rate max.
Recoil force without body support
Recoil force with body support
Weight (without attachments) approx. kg
Length without spray lance approx.
Height approx.
Width approx.
High-pressure hose connection
Spray tube / spray lance high-
pressure connection
Bypass connection
18
9.918-187.0
bar 1100
°C 95
l/min 45
N 150
N 250
3.3
mm 340
mm 200
mm 50
1 1/8"-12 UNF
9/16"-18 UNF-LH
G 3/8"
English
Controller
Subject to technical modifications.
12

Appendix

12.1 Water quality guideline
The limit values for the required water quality are an ex-
cerpt from the WOMA water quality guideline, which can
be obtained from the WOMA GmbH (see Chapter 1.3 Ser-
vice).
Solid body content, max.
Total water hardness
CaO
CaCO
3
Calcium hardness
pH value
Base capacity (pH 8.2)
Proportion of total dissolved material 10 - 75 mg/l
Conductivity
Chloride (e. g. NaCl)
Iron (Fe)
Fluoride (F)
Free chlorine (Cl)
Copper (Cu)
Manganese (Mn)
Phosphate (H PO )
3 4
Silicate (Si O )
x y
Sulphate (SO )
4
12.2 Consumables
Description
Thread installation paste
Anti-seize installation paste
Mechanical
bypass
200 mg/l
1 - 20 °H
10 - 200 mg/l
18 - 357 mg/l
0.89 - 3.39 mmol/l
6.5 - 9.5
0 - 0.25 mmol/l
100 - 1000 μS/cm
< 100 mg/l
< 0.2 mg/l
< 0.15 mg/l
< 1 mg/l
< 2 mg/l
< 0.05 mg/l
< 50 mg/l
< 20 mg/l
< 100 mg/l
Container Material
number
500 g 9.892-362.0
450 g 9.892-352.0