Kärcher HDR 777 Bedienungsanleitung Seite 19

Fault
Reaction tank is not being
emptied fully
Stirrrer motor and emptying
pump do not switch off after
the reaction tank has been
emptied
Splitting powder is not being
transported to the reaction
tank.
Dosing motor for splitting
powder is running although
there is no powder.
Stirrer shaft in the reaction
tank does not rotate.
Inadequate flake size
Filter is full after a few split-
ting processes
High-pressure cleaner with-
out pressure
Water is running out from
one of the overflows (B, F, H)
(see "Plant installation"; con-
necting the overflows)
Stirrrer motor and emptying
pump do not switch off after
the reaction tank has been
emptied
Possible cause
Storage tank for processed water is
full.
Filling level probe in the processed
water tank is dirty or defective.
Hose pipe or emptying pumps be-
tween the reaction tanks and filter
units are blocked.
Stirrer shaft is dirty or there is a con-
tact problem.
Stirrer shaft has got detached from
the motor shaft.
Stirrer shaft is dirty or there is a con-
tact problem.
Dosing opening or dosing device is
blocked due to moist splitting pow-
der.
Dosing motor does not have voltage
or is defective.
Filling level sensor is dirty or defec-
tive.
Stirrer motor does not have voltage
or is defective.
Stirrer shaft has got detached from
the motor shaft.
Dosing quantity of splitting powder
or liquid splitting agent is too low.
Resting phase after stirring process
is too short.
Stirring process is not perfect.
Bypass pump under the reaction
tank does not work.
Hose from reaction tank to cascade
filter does not fit into the filter open-
ing that has been provided.
Too small flakes block up the filter
fleece.
There is no water; air has been
sucked in or the high-pressure
cleaner has been connected wrong-
ly.
Overflows not connected.
Stirrer shaft is dirty or there is a con-
tact problem.
Remedy
In recycling, wait till the processed water is con-
sumed; otherwise clean or replace the supply
pump for high-pressure cleaner.
Clean or replace the filling level probe.
Clean or replace.
Clean or replace the stirrer shaft.
Faster the stirrer shaft back to the coupling; se-
cure the coupling.
Clean or replace the stirrer shaft.
Remove splitting powder from the dosing unit;
clean the opening of the dosing unit; fill in dry split-
ting powder.
Check supply voltage; replace motor if required. Customer Service
Clean or replace the filling level sensor.
Check supply voltage; replace motor if required. Customer Service
Faster the stirrer shaft back to the coupling; se-
cure the coupling.
Increase dose.
Increase resting phase.
Ascertain cause and rectify it.
Check supply voltage; replace pump if required. Customer Service
Remove the cause.
Optimize the flaking process (dosing of splitting
agent and resting phase).
Ascertain cause and rectify it.
Connect the overflows.
Clean or replace the stirrer shaft.
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