Troubleshooting; Faults With Display; Faults Without Display - Kärcher IP 120 Betriebsanleitung

Troubleshooting

Danger!
Risk of accident while working on the appli-
ance. Carry out all the steps described in
the chapter "Shut down" before starting
anhy work on the device.
Danger
Risk of cold burns on account of dry ice or
cold parts of the machine. While working on
the machine, wear appropriate safety gear
for protection against cold or remove dry ice
and let the machine heat up.
Avoid bodily contact with dry ice.
Never put dry ice in your mouth.
Fault Possible cause
The indicator lamp Hydraulic system is leaking
"Oil level low" illumi-
nates
Defective oil level indicator
Indicator lamp "Oil The oil cooler ventilator is not functioning
temperature high" illu- properly
minates
Defective temperature switch
Indicator lamp "Motor
overload" illuminates
Indicator lamp "Cycle No extrusion
too long" illuminates
Defective positioning sensor
Direction of rotation of the hydraulic pump is
wrong.
Fault Possible cause
No dry ice snow pro- No liquid carbon dioxide in the supply line
duction
Valves EV2, EV3, EV4 * are blocked or de-
fective.
* IP 220 only
Carbon dioxide pressure too high
Too much dry ice Valves EV2, EV3, EV4 * do not close.
snow in the exhaust * IP 220 only
line
Sintered bushing defective.
Water is dripping from Drain in the condensate collector or in the
the machine condensate line plugged.

Faults with display

Remedy
Check the hydraulic system for tightness. Take
the machine out of service if the hydraulic sys-
tem is leaking and contact customer service.
Check the oil level indicator. If the oil level is not
OK, inform customer service.
Check ventilator function of oil cooler, clean if
required. Call customer service in case of de-
fects.
Inform Customer Service.
Press "Reset" key. Restart the machine. If the
fault recurs, call customer service.
Check the extruder plate and the pistons for
damage; contact customer service if damaged.
Inform Customer Service.
Check the electrical connection.

Faults without display

Remedy
Wait until the liquid carbon dioxide has dis-
placed the gas in the line.
If the solenoid valves are functioning properly,
there will be an audible click when the carbon di-
oxide supply is switch off. Call customer service
if necessary.
IP 120: Adjust the pressure on the carbon diox-
ide supply (value is listed in "Specifications").
IP 220: Check pressure at the manometer. If the
pressure is higher than 2.1 MPa (21 bars), in-
form customer service.
Inform Customer Service.
Inform Customer Service.
Clean the drain and the condensate line.
By whom
Operator
Operator
Operator
Operator
Operator
Operator
Operator
Customer
Service
By whom
Operator
Operator
Operator
Operator
Operator
Operator
English 17