Troubleshooting - Kärcher HDR 777 Operating Instructions Manual

English
Problem
Malfunction indicator light
is illuminated
Reaction tank (3)
overflows
System does not start up
Wastewater pump (14) in
dirt trap (1) wont work
Wastewater pump (14)
wont switch off
F1
F. Troubleshooting
Possible cause
Filter is full
Liquid cleavage agent
metering unit (5) empty
Liquid cleavage agent
metering unit (4) empty or
disinfectant metering tank
(6) empty (only in recycling
mode)
Short level sensor in
reaction tank (3) triggers, as
long sensor in the reaction
tank does not trigger
Contact problem in the
reaction tank (long level
sensor) triggers, although
the empty sensor displays
tank empty
Contact problem in the
industrial water storage tank
(9). Sensors trigger,
although the long sensor
displays tank empty
Contact problem with the
sensors in the float box of
the ABS 2.638-300 (only
possible for recycling via
ABS 2.638-300!)
Runtime of the pumps
beneath the reaction tank
exceeded
Float switch in the dirt trap
(option) triggers
Agitator shaft detached from
motor shaft
Level sensors in reaction
tank (3) are dirty, defective
or misaligned
No supply voltage
Empty sludge trap (1)
Filter unit holding (9) tank is
full
Problems with contacts or
control unit is defective
Pump not connected
Float switch (S2) not closed
Pump or defect
Level sensor in the reaction
tank (3) soiled or defective
Remedy
Clean or replace filter
(see maintenance schedule)
Turn main switch to "0"
Fill metering unit 2/3 full with splitting agent
Switch system on again
Set master switch to "0"
Top up liquid cleavage agent or disinfectant
Set master switch to "0",
drain reaction tank, clean sensors and then
switch on system again. If the short level
sensor triggers again, inform customer service
Set master switch to "0",
clean sensors and then switch system back
on. If the same problem occurs again, inform
customer service
Set master switch to "0",
clean sensors and then switch the system
back on. If the same problem occurs again,
inform customer service
Set master switch to "0",
clean the sensors in the float box of the ABS
and then switch the system back on. If the
same problem occurs again, inform customer
service
Inform customer service
Check HDR 777 + HD unit and if necessary
inform customer service
Attach shaft and tighten coupling securely
Check, clean and adjust, if required, or
replace
Plugged into mains? Check electricity supply.
Fill sludge trap or position submersible pump
lower down
For recycling mode: wait until water has been
consumed by high-pressure device;
otherwise, clean or replace submersible pump
(12).
Check contacts or replace control board
Connect pump
Connect float switch S 2 or bridge contact on
printed circuit board clean or replace
Clean or replace
5.959-106 A2006570 09/03
HDR 777
By whom
Operator
Operator
Operator
Operator
Operator
Operator
Operator
Operator
Operator/
Customer
Service
Customer
Service
Operator/
Customer
Service
Operator
Operator
Operator/
Customer
Service
Customer
Service
Customer
Service
Customer
Service