Kärcher HDS 4.0/32 Pe Cage Operator's Manual page 17

PRObLEM POSSIbLE CAUSE
OIL DRIPPINg
Oil seal worn
ExCESSIvE Irregular functioning of the valves
vIbRATION IN
DELIvERy LINE
DETERgENT NOT Air leak
DRAWINg
Restrictor in float tank is missing
Filter screen on detergent suction
hose plugged
Dried up detergent plugging metering
valve
High viscosity of detergent
Hole in detergent line(s)
Low detergent level
PUMP RUNNINg Pump sucking air
NORMALLy bUT
PRESSURE LOW
Valves sticking
ON INSTALLATION
Nozzle incorrectly sized
Unloader valve seat faulty
Worn piston packing
bURNER MOTOR
Fuel pump seized
WILL NOT RUN
Burner fan loose or misaligned
Defective control switch
Loose wire
Defective burner motor
RELIEf vALvE Relief valve defective
LEAkS WATER
TROUbLESHOOTINg
9.800-103.0 • REV. 1/07
SOLUTION
Check and replace if necessary.
Check and replace if necessary.
Tighten all clamps. Check detergent lines for
holes.
Replace restrictor. Check for proper orifice
in restrictor.
Clean or replace.
Disassemble and clean thoroughly.
Dilute detergent to specifications.
Repair hole.
Add detergent, if needed.
Check water supply and possibility of air
seepage.
Check and clean or replace if necessary.
Check and replace if necessary (See serial
plate for proper size).
Check and replace if necessary.
Check and replace if necessary.
Replace fuel pump.
Position correctly, tighten set screw.
Replace switch.
Check and replace or tighten wiring.
Replace motor.
Replace or repair.
17