Operating Failures/Failure Messages - Kärcher WATERCLEAN 600 CD Service Handbook

WTC 600 LP / MP
3.5

Operating failures/failure messages

The control system is able to detect operating failures during OPERATION and DISINFECTION
and to display them. Usually, the unit will be stopped if a failure occurs. However, operating
settings exist for the failures CY EXCEEDED and HARDWATER which make it possible that
such a failure is only displayed without interruption of the production. During the operating mode
DISINFECTION, only a MOTOR FAILURE can be detected.
The different operating failures/failure messages as well as their reasons and consequences are
as follows:
Denomination
CY EXCEEDED
FORCED STOP
MOTOR FAILURE/HARD
WATER
LACK OF PRESSURE
MAINTENANCE
When the preset maintenance interval is over, the LED display OPERATION starts to flash (but
only if control system is in the operating conditions DISPOSAL, PRODUCTION ON,
CONCENTRATE DISPLACEMENT/FLUSH or DISCONTINUOUS RINSE. This alarm message
can only be switched off by a technician who has then to enter a new maintenance interval (see
item 4.4.4).
Besides the above mentioned failures also other types of failure exist. These are erroneous
calibration ranges (failure message on text display), internal system failures (flashing FAILURE
light) and initialization failures (EEPROM fail message in text display immediately after having
switched the system on or during operation). As these failures correspond to malfunctions which
the user cannot repair, the supplier has to be informed immediately if such failures occur.
ATTENTION !!! As an internal system failure will interrupt program run, failures will not be
monitored. Such a control system must not be used any more.
Service Handbook 08.2004
Reason
Cy perm> LIM
FORCED STOP active
MOTOR FAILURE/
LIMITENT CONTACT
active
PRESSURE SWITCH active
Consequence
Unit switches off if ps LIM
high = switch-off
Unit switches off
Unit switches off
Unit switches off
APPENDIX
79