Maintenance Schedule - Kärcher HD 7/16-4 ST-H Handbuch

Safety inspection/ maintenance
contract
You can sign with your dealer a contract for
regular safety inspection or even sign a
maintenance contract. Please take advice
on this matter.
Time Activity
daily Check hand-
spray gun
opinion
Test fill level
Check high pres-
sure hoses
weekly or after Check the unit for
40 operating leaks
hours
Check oil level
Check oil level
Clean filter
Test vibration
dampener
monthly or after Cleaning the
200 operating sieve
hours
Test swimmer
valve
Test automatic
start
Tighten hose
clips
annually or after Oil change
1000 operating
Check unit for
hours
calcium deposits.
annual Safety check

Maintenance schedule

Assembly affected
Hand spray gun
Power cord
(Only with appliance versions
with power cable and mains
plug).
Detergent tank, Installation wa-
ter softener (optional)
Outlets, hoses towards working
machine
Entire plant
Oil tank at the pump
Oil tank at the pump
Filter at the detergent suck hose Clean filter at the detergent suck hose.
Vibration dampener
Sieve in water inlet
Float tank
Pressure switch
All hose clips
High-pressure pump
entire water system
Entire plant
EN
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 the mains cable regularly for damage such as
aging or formation of cracks. If you find a damage,
then the cable must be replaced before using it any
further.
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)
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. Refill oil. Check oil level in the oil tank. Operator
Improper functioning of valves or pumps can be an
indication of calcium deposits. If necessary decalcify.
Safety check according to the guidelines for fluid
spraying equipment.
6
-
of whom
Operator
Operator/
Customer
Service
Operator
Operator
Operator/
Customer
Service
Operator/
Customer
Service
Operator
Operator
Customer
Service
Operator
Operator
Operator
Operator
Operator
trained in de-
calcification
Technical ex-
pert
23