Karcher HDR 777 EU - Manual (Page 18)

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