Karcher HD 4000 C, HD 6000 C Interval Procedure Subject Assembly Activity By whom

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E. Maintenance

HD 4000 C / HD 6000 C

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

E3 5.956-648 A10369 (06/98)