Kärcher HD 4000 C Operating Instructions Manual page 20

English
Interval Procedure
Daily Check
handgun
Check
high-pressure
hoses
Weekly, or Check system
after 40 for leaks
operating
hours
Check oil level Both pump sides
Check oil
quality
Check
working
pressure
Check hose
quick-coupling
Check
dashpot
E3
E. Maintenance
Subject Assembly
All handguns
Outlet lines & hoses leading
to workstations
Entire system
Both pump sides
Pressure gauge in control
panel
Hose quick-couplings
between system tap and
high-pressure hose to
handgun.
Dashpot on each pump side A defective dashpot is readily
HD 4000 C / HD 6000 C
Activity
Check whether handgun closes
properly. Check function of
safeguard against inadvertent
operation. Replace defective
handguns.
Check hoses for damage. Replace
defective hoses immediately.
Accident Hazard!
Check pump, overflow valve and
tubing installation for leaks. If oil is
present in the drip pan under pump,
of if a leak exceeds 10 drops of
water per minute, call customer
service immediately.
Keep weep holes unblocked.
Check pump oil level. MIN level:
Centre of oil sight glass. MAX level:
up to mark in housing. If required,
top up with oil (part no. 6.288-061).
If the oil appears milky, it must be
changed. In this case it is
recommended to change the pump
oil seal also.
(Customer service.)
Check system water pressure
(pressure gauge). If pressure is too
high or too low, investigate and
remedy the cause (see also the
section on Trouble Shooting).
Pump must be running.
Check for leakage in tandem and
individual operation.
Connect clutch and check clutch
locking function.
Replace defective clutches.
identifiable through increased pump
vibration.
Replace defective dashpot.
5.956-648 A10369 (06/98)
By whom
Operator
Operator
Operator/
Customer
Service
Operator
Operator/
Customer
Service
Operator
Operator
Customer
Service
Operator
Customer
Service