Troubleshooting - Kärcher K 3.92 M Operator's Manual

CAUTION
Symptom
Motor will not start
Unit does not reach
high pressure.
Output pressure va-
ries high and low.

TROUBLESHOOTING

Cause
On/Off switch is in the "OFF"
(O) position.
Power cord is not plugged in. Plug in power cord.
Electrical outlet does not sup-
ply adequate power.
Tripped circuit breaker.
Diameter of garden hose is
too small.
Water supply is restricted.
Not enough inlet water supp-
ly.
Water inlet filter is clogged.
Spray wand is on low pressu-
re position.
Not enough inlet water supp-
ly.
Pump is sucking air.
Water inlet filter is clogged.
Discharge nozzle is obstruc-
ted.
Calcified gun, hose or spray
wand.
Disconnect the machine from the power
source before making any repair.
Solution
Turn switch to the "ON" (I)
position
Try a different outlet.
Switch off pressure washer.
The reset will be automatical-
ly, for that wait that the tem-
perature goes down.
Replace with a 5/8 inch gar-
den hose.
Check garden hose for kinks,
leaks and blockage.
Open water source full force.
Remove filter and rinse out in
warm water.
Turn spray wand to high
pressure position.
Turn water on full force.
Check garden hose for kinks,
leaks or blockage.
Check that hoses and fittings
are air tight. Turn off machine
and purge pump by squee-
zing trigger gun until a steady
flow of water emerges throu-
gh the nozzle.
Remove filter and rinse out in
warm water.
Blow out or remove debris
with a fine needle.
Run distilled vinegar through
detergent suction tube.
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English