Karcher 600 CD manual Maintenance, Indication, Malfunction, Cause, Corrective Action, Chap

MAINTENANCE WTC 600 LP / MP

4.5.3Malfunctions of the RO Control and Metering Pump

Indication	Malfunction	Cause	Corrective Action	Chap./
				Fig.
Indication of RO	Fuse defective		Have replaced by	ETL,
control dark			electrician	diagram
				in switch
				cabinet
	Short circuit,		Replace defective parts
	general
	Solenoid valve		Replace defective parts	ETL
	defective
	Motor winding		Replace defective parts	ETL
	defective
Water level in	Pump does not	Suction line untight	Retighten screwed	ETL
container is	draw in		fittings. Replace
constant for			suction line
days
		Suction line	Flush or replace
		clogged	suction line
		Crystals, debris in	Clean valves	4.2
		the valves
		(metering head)
		Membrane torn or	Replace membrane	4.2
		membrane push-
		rod torn out
	Pump does not	Air in the suction	Bleed pump
	meter	line and in the
		metering head
		Lift adjustment a	While the pump is
		zero	running, turn in “+”
			direction (adjustment
			values, see 3.3.1)
		Crystals, debris in	Clean valves	4.2
		the valves
		(metering head)
		Valves not	Check correct line-up of
		mounted correctly	valves and correct,
			if required (direction of
			arrow!)
		Injection fitting	Check direction of flow
		blocked	and correct, if required,
			or eliminate plug
			(direction of arrow!)
Table 30

58 Service Handbook 08.2004