Maintenance Schedule - Kärcher HD 6/16-4 ST-H Bedienungsanleitung

Time Activity
daily Check hand-
spray gun
Test fill level
Check high pres-
sure hoses
weekly or after Check the unit
40 operating for leaks
hours
Check oil level
Check oil level
Check operating
pressure
Test quick cou-
plings
Test vibration
dampener
monthly or after Cleaning the
200 operating sieve
hours
Test swimmer
valve
Test automatic
start
Tighten hose
clips
half-yearly or af- Oil change
ter 1000 operat-
ing hours
Check unit for
calcium depos-
its.
Tighten clamps
annual Safety check
24
English

Maintenance schedule

Assembly affected
Hand spraygun
Detergent tank, Installation wa-
ter softener (optional)
Outlets, hoses towards working
machine
Entire plant
Oil tank at the pump
Oil tank at the pump
Manometer
Quick couplings between the
removal site and the high pres-
sure hose for the hand spray
gun.
Vibration dampener
Sieve in water inlet
Swimmer tank
Pressure switch
All hose clips
High-pressure pump
entire water system
Electronics system
Entire plant
Performance
Check whether the hand-spray gun closes tightly
without any leaks. Check the protection mechanism
against accidental switching. Replace defective
hand-spray guns.
Check filling level, refill if necessary.
Check hoses to see if there are damages. Replace
defect hoses immediately. Danger of accident!
Check pumps and pipes for leaks. Inform Customer
Service if there is oil loss or if there is a leakage of
more than 10 drops of water per minute.
If the oil is milky, it needs to be replaced. It is recom-
mended likewise in this case that the pump's oil seal
be changed (Customer Service).
Check oil level of the pump. Refill oil if required (Or-
der no. 6.288-016)
Read the water pressure on the manometer during
working. If there is any deviation from the details in
the technical specifications, refer the to "Trouble-
shooting" chapter to locate the cause and rectify it.
When the pump is running check for leaks both when
it is connected and disconnected. Connect couplings
and check the fastening device.
Replace defective couplings.
If the vibration of the pump increases it indicates that
the pressure tank is defective. Replace the vibration
dampener.
Check, dismantle sieve and clean it.
When the swimmer valve is closed no water can es-
cape the overflow.
Pump is at a standstill, because no water removal
has taken place. Turn on the hand spray gun. If the
pressure in the high pressure network falls below 3
MPa, the pump must be turned on.
Tighten the hose clips using a torque wrench. Tight-
ening torque up to a diameter of 28 mm = 2Nm, from
29 mm = 6 Nm.
Drain off oil. Fill in 0.75 l new oil (Order no. 6.288-
061). Check oil level in the oil tank.
Improper functioning of valves or pumps can be an
indication of calcium deposits. If necessary decalci-
fy.
Tighten all clamps for components in the main cir-
cuit.
Safety check according to the guidelines for fluid
spraying equipment.
of whom
Operator
Operator
Operator
Operator/
Customer
Service
Operator/
Customer
Service
Operator
Operator
Operator
Customer
Service
Customer
Service
Operator
Operator
Operator
Operator
Operator
Operator
trained in de-
calcification
Electricians
Technical
expert