Kärcher HDS3.5/20, Руководство оператора

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9.801-509.0 - C • Karcher Operator's Manual
21
PRESSURE
W
ASHER
T
roub
leshooting Guide
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
WATER
TEMPERATURE
TOO HOT Incoming water to machine warm or hot Lower incoming water temperature.
Gas pressure too high See specifi cations for proper gas pressure.
Detergent line sucking air Tighten all clamps. Check detergent lines
for holes.
Defective high limit switch Replace.
Incorrect burner nozzle size See serial plate.
Insuffi cient water supplied Check water GPM to machine.
Restricted water fl ow Check nozzle for obstruction, proper size.
PRESENCE OF
WATER IN OIL Oil seal worn Check and replace if necessary.
High humidity in air Check and change oil twice as often.
WATER
DRIPPING
FROM UNDER
PUMP Piston packing worn Check and replace if necessary.
O-Ring plunger retainer worn Check and replace if necessary.
DETERGENT
NOT
DRAWING Air leak Tighten all clamps. Check detergent lines for holes.
Detergent metering valve packing not tight
or packing worn Tighten nut. Replace valve or packing.
Filter screen on detergent suction hose
plugged Clean or replace.
Dried up detergent plugging metering valve Disassemble and clean thoroughly.
High viscosity of detergent Dilute detergent to specifi cations.
Restriction behind fl oat tank screen
removed Install restriction.
Hole in detergent line(s) Repair hole.
Strainer basket plugged Remove and clean.
Connections on selector valve loose Put tefl on tape on all pipe connections.
Detergent solenoid not opening
(where applicable) Check fl ow switch, replace detergent
solenoid.
PUMP
RUNNING
NORMALLY
BUT PRESSURE
LOW ON
INSTALLATION Pump sucking air Check water supply and possibility of air.
Valves sticking Check and clean or replace if necessary.
Unloader valve seat faulty Check and replace if necessary.
Nozzle incorrectly sized Check and replace if necessary
(See serial plate for proper size).
Worn piston packing Check and replace if necessary.
FLUCTUATING
PRESSURE Valves worn Check and replace if necessary.
Blockage in valve Check and replace if necessary.
Pump sucking air Check water supply and air seepage at
joints in suction line.
Worn piston packing Check and replace if necessary.
PUMP
NOISY Air in suction line Check water supply and connections on
suction line.
Broken or weak inlet or discharge valve
springs Check and replace if necessary.
Excessive matter in valves Check and clean if necessary.
Worn bearings Check and replace if necessary.