Maintenance Schedule - Kärcher HDI 38/12 Bedienungsanleitung

Time Activity
daily Check hand-
spray gun
Check high pres-
sure hoses
weekly or after 40 Check the unit for
operating hours leaks
Check oil level
Check oil level
Check working
pressure
Check pressure
tank
Cleaning the
sieve
monthly or after 200 Check pump
operating hours
Check water
scarcity fuse
Check the pres-
sure relief valve
Test swimmer
valve
Tighten hose
clips
half-yearly or after Oil change
1000 operating
hours
Check the appli-
ance for calcium
deposits
Tighten clamps
Test swimmer
valve
annual Safety check
24

Maintenance schedule

Assembly affected
Hand spray gun
Outlets, hoses towards working
machine
Entire plant
Oil level indicator on the pump If the oil is milky, it needs to be replaced.
Oil level indicator on the pump Check oil level of the pump. Refill oil if required
Manometer
High-pressure pump
Dirt catcher
High-pressure pump
Swimmer switch in the swimmer
tank
Electro-pneumatic ball valve
combination for star delta start-
up
Float tank
All hose clips
High-pressure pump
entire water system
Control board
Float tank
Entire plant
EN
Performance
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.
Check hoses to see if there are damages. Re-
place defect hoses immediately. Danger of acci-
dent!
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.
(Order no. 6.288-016)
If the pressure is too high or too low, find the
cause and resolve it (see Help with Faults).
A defective accumulator can be detected by an
increased vibration of the high pressure pump.
Replace defective accumulator.
See section "Clean sieve".
Check the pump for leaks. If the leakage is more
than 3 drops per minute, call Customer Service.
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.
If it functions properly, the motor must reach full
throttle within 2 seconds. Remove deposits in the
valve if necessary.
The water level must be 40 mm above the over-
flow. No water must exit while the swimmer valve
is closed.
Tighten the hose clips using a torque wrench.
Tightening torque up to a diameter of 28 mm =
2Nm, from 29 mm = 6 Nm.
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.
Improper functioning of valves or pumps can be
an indication of calcium deposits. If necessary
decalcify.
Tighten all clamps for components in the main cir-
cuit.
The water level must be 40 mm above the over-
flow. No water must exit while the swimmer valve
is closed.
Safety check according to the guidelines for fluid
spraying equipment.
8
-
of whom
Operator
Operator
Operator/
Customer
Service
Operator
Operator
Operator
Operator/
Customer
Service
Operator
Operator
Operator
Operator/
Customer
Service
Operator
Operator
Operator
Operator
trained in de-
calcification
Electricians
Customer
Service
Technical ex-
pert