Karcher HD 13/12-4 ST [24/357] Maintenance schedule
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Karcher HD 13/12-4 ST [24/357] Maintenance schedule

Karcher HD 13/12-4 ST [24/357] Maintenance schedule
24 English
Maintenance schedule
Time Activity Assembly affected Performance of whom
daily Check hand-
spray gun
Hand spraygun Check whether the hand-spray gun closes tightly
without any leaks. Check the protection mechanism
against accidental switching. Replace defective
hand-spray guns.
Operator
Test fill level Detergent tank, Installation wa-
ter softener (optional)
Check filling level, refill if necessary. Operator
Check high pres-
sure hoses
Outlets, hoses towards working
machine
Check hoses to see if there are damages. Replace
defect hoses immediately. Danger of accident!
Operator
weekly or after
40 operating
hours
Check the unit
for leaks
Entire plant 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.
Operator/
Customer
Service
Check oil level Oil tank at the pump 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).
Operator/
Customer
Service
Check oil level Oil tank at the pump Check oil level of the pump. Refill oil if required (Or-
der no. 6.288-016)
Operator
Check operating
pressure
Manometer 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.
Operator
Test quick cou-
plings
Quick couplings between the
removal site and the high pres-
sure hose for the hand spray
gun.
When the pump is running check for leaks both when
it is connected and disconnected. Connect couplings
and check the fastening device.
Operator
Replace defective couplings. Customer
Service
Test vibration
dampener
Vibration dampener If the vibration of the pump increases it indicates that
the pressure tank is defective. Replace the vibration
dampener.
Customer
Service
monthly or after
200 operating
hours
Cleaning the
sieve
Sieve in water inlet Check, dismantle sieve and clean it. Operator
Test swimmer
valve
Swimmer tank When the swimmer valve is closed no water can es-
cape the overflow.
Operator
Test automatic
start
Pressure switch 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.
Operator
Tighten hose
clips
All hose clips Tighten the hose clips using a torque wrench. Tight-
ening torque up to a diameter of 28 mm = 2Nm, from
29 mm = 6 Nm.
Operator
half-yearly or af-
ter 1000 operat-
ing hours
Oil change High-pressure pump Drain off oil. Fill in 0.75 l new oil (Order no. 6.288-
061). Check oil level in the oil tank.
Operator
Check unit for
calcium depos-
its.
entire water system Improper functioning of valves or pumps can be an
indication of calcium deposits. If necessary decalci-
fy.
Operator
trained in de-
calcification
Tighten clamps Electronics system Tighten all clamps for components in the main cir-
cuit.
Electricians
annual Safety check Entire plant Safety check according to the guidelines for fluid
spraying equipment.
Technical
expert

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