Troubleshooting - Kärcher Landa HOT 2-1100 Operator's Manual

PROBLEM
LOW OPERATING
PRESSURE
LOW WATER
TEMPERATURE
WATER TEMPERATURE
TOO HOT
DETERGENT NOT
DRAWING
PUMP RUNNING
NORMALLY BUT
PRESSURE LOW ON
INSTALLATION

TROUBLESHOOTING

POSSIBLE CAUSE
Faulty pressure gauge
Insufficient water supply
Old, worn or incorrect spray nozzle
Plumbing or hose leak
Faulty or mis-adjusted unloader
valve (Where applicable)
Worn packing in pump
Fouled or dirty inlet or discharge
valves in pump
Worn inlet or discharge valves
Soot buildup on coils not allowing
heat transfer
Lime deposits on inside of coil
Defective high limit switch
Insufficient water supplied
Restricted water flow
Air leak
Valve in the injector head may be
blocked, dirty or damaged
Filter screen on detergent suction
hose plugged
Dried up detergent plugging meter-
ing valve
High viscosity of detergent
Hole in detergent line(s)
Low detergent level
Variable pressure control handle set
for high pressure
Pump sucking air
Valves sticking
Unloader valve seat faulty
Nozzle incorrectly sized
Worn piston packing
8.917-208.0 • HOT • Rev. 05/17
SOLUTION
Install new gauge.
Use larger garden hose; clean filter
washer at water inlet.
Match nozzle number to machine and/or
replace with new nozzle.
Check plumbing system for leaks. Re-
tape leaks with teflon tape.
Adjust unloader for proper pressure.
Install repair kit when needed.
Install new packing kit.
Clean inlet and discharge valves.
Replace with valve kit.
Clean coils.
Delime coil.
Replace.
Check water G.P.M. to machine.
Check nozzle for proper size or obstruc-
tion.
Tighten all clamps. Check detergent
lines for holes.
Clean or replace valve in injector.
Clean or replace.
Disassemble and clean thoroughly.
Dilute detergent to specifications.
Repair hole.
Add detergent, if needed.
Turn variable pressure control handle
to allow water to flow out of brass soap
nozzle.
Check water supply and possibility of air
seepage.
Check and clean or replace if necessary.
Check and replace if necessary.
Check and replace if necessary (See se-
rial plate for proper size).
Check and replace if necessary.
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