Maintenance And Care; Maintenance Schedule - Kärcher HWE 4000 Manual Original

Danger
Risk of injury on account of electric shock!
Before starting any work on the plant, wwitch off the main
–
switch and ensure that it will not be put on accidentally.
Depressurize the system.
–
Work on electrical plant only to be carried out by qualified and
–
authorised electricians.
Danger
Risk of accident due to improper maintenance!
Service and repairs may only be carried out by authorised
–
persons or Kärcher Customer Service.
Adjustments and settings to the regulators and safety equip-
–
ment may only be carried out by Customer Service.
Time Activity
weekly or after opinion
30 operating
opinion
hours
opinion
opinion
opinion
monthly or after Check function
120 operating
hours
Check function
Check function
opinion
half-yearly or af- Clean the filter
ter 750 operating
hours
opinion
opinion
Clean the filter
opinion
annual Safety check
Safety check
at least every 5 Pressure test
years, recurring
36
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Maintenance and care

Maintenance schedule

Assembly affected
Entire hydraulic installation
Anti-calcification unit (optional)
Manometer of the high pressure
pump
Thermostat "hot water"
Thermostat "steam stage"
Fuel inlet
Safety switch for water scarcity
Water shortage safeguard
Thermostat "hot water" and
"steam stage"
Safety valves
Heating coil, burner and boiler
parts
Heating coil
Safety temperature stop, ex-
haust temperature stop, pres-
sure guard (min.)
Burner
Motor bearing of the burner
Entire high pressure cleaning
unit
Gas installation (only 1.965-101) Perform a safety inspection as per the applicable
Entire high pressure cleaning
unit
EN
Service and repairs to the gas burner may only be carried out
–
by authorised Customer Service technicians.
Danger
Risk of injury on account of scalding or burns due to contact with
hot burner parts such as exhaust pipe, burner flange and hot wa-
ter or steam pipes. Let the plant cool down sufficiently before
starting any maintenance or repairs work.
Only use accessories and spare parts which have been ap-
–
proved by the manufacturer. The exclusive use of original ac-
cessories and original spare parts ensures that the appliance
can be operated safely and trouble free.
This is also applicable to the consumables and detergents.
Observe all instructions on safety and use which are accom-
–
panying these parts.
Performance
Check for leaks.
Check functioning on the basis of the water hard-
ness values (below 10 °dH).
Water pressure = reference value?
Steam jet pressure = reference value?
Water temperature = reference value?
Steam jet temperature = reference value?
Check fuel inlet pipe for leaks and the filter for
cleanliness.
Close water supply, the burner must switch off or
rather not start.
Replace defective component.
Close water supply, the burner must switch off or
rather not start.
Replace defective component.
Check whether the regulator functions properly
in all the three operating modes: Operate with
hot water, spray jet operations, operate with
steam (see chapter "Function").
Check for leaks.
Dismantle the burner chamber and the boiler
sleeve using special removing devices and clean
all the parts.
Decalcify the heating coil when the pressure in-
creases to more than 10% of the normal value.
Check for correct functioning.
Clean depending on the exhaust values (special
soot values).
Replace if it is making noise; otherwise there will
be some other damages.
Perform a safety inspection as per the applicable
national rules and regulations for liquid spray jets
of the respective country.
national rules and regulations for gas installa-
tions of the respective country.
Perform the pressure test as per manufacturer's
instructions.
11
-
of whom
Operator
Operator
Operator
Operator
Operator
Operator
Operator
Operator
Customer
Service
Operator
Customer
Service
Operator
Operator
Customer
Service
Trained op-
erator
Customer
Service
Customer
Service
Customer
Service
Technical
expert
Technical
expert, gas
supplier
Technical
expert