Kärcher HDI 38/12, Manual

Page: 24 / 384

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8
Maintenance schedule
Time Activity Assembly affected Performance of whom
daily Check hand-
spray gun Hand spray gun Check whether the hand-spray gun closes tightly
without any leaks. Check the protection mecha-
nism against accidental switching. Replace de-
fective hand-spray guns. Operator
Check high pres-
sure hoses Outlets, hoses towards working
machine Check hoses to see if there are damages. Re-
place defect hoses immediately. Danger of acci-
dent! Operator
weekly or after 40
operating hours Check the unit for
leaks Entire plant Check pumps, overflow valve and pipe system for
leaks. Inform Customer Service if there is oil be-
low the pump or if there is a leakage of more than
3 drops of water per minute. Keep the leakage
borings clear. Operator/
Customer
Service
Check oil level Oil level indicator on the pump If the oil is milky, it needs to be replaced. Operator
Check oil level Oil level indicator on the pump Check oil level of the pump. Refill oil if required
(Order no. 6.288-016)
Operator
Check working
pressure Manometer If the pressure is too high or too low, find the
cause and resolve it (see Help with Faults). Operator
Check pressure
tank High-pressure pump A defective accumulator can be detected by an
increased vibration of the high pressure pump.
Replace defective accumulator. Operator/
Customer
Service
Cleaning the
sieve Dirt catcher See section "Clean sieve". Operator
monthly or after 200
operating hours Check pump High-pressure pump Check the pump for leaks. If the leakage is more
than 3 drops per minute, call Customer Service. Operator
Check water
scarcity fuse Swimmer switch in the swimmer
tank Press the swimmer of the low water fuse down for
about 5 seconds and control the error indicator on
the control board. Remove deposits if necessary. Operator
Check the pres-
sure relief valve Electro-pneumatic ball valve
combination for star delta start-
up If it functions properly, the motor must reach full
throttle within 2 seconds. Remove deposits in the
valve if necessary. Operator/
Customer
Service
Test swimmer
valve Float tank The water level must be 40 mm above the over-
flow. No water must exit while the swimmer valve
is closed. Operator
Tighten hose
clips All hose clips Tighten the hose clips using a torque wrench.
Tightening torque up to a diameter of 28 mm =
2Nm, from 29 mm = 6 Nm. Operator
half-yearly or after
1000 operating
hours Oil change High-pressure pump Drain off oil. Fill in 1 l of fresh oil (order no. 6.288-
016.0). Check the oil level at the oil level indica-
tor. Operator
Check the appli-
ance for calcium
deposits entire water system Improper functioning of valves or pumps can be
an indication of calcium deposits. If necessary
decalcify. Operator
trained in de-
calcification
Tighten clamps Control board Tighten all clamps for components in the main cir-
cuit. Electricians
Test swimmer
valve Float tank The water level must be 40 mm above the over-
flow. No water must exit while the swimmer valve
is closed. Customer
Service
annual Safety check Entire plant Safety check according to the guidelines for fluid
spraying equipment. Technical ex-
pert
24 EN