Landa VLP3-1100 Operator's Manaul page 38

VNG/VLP SERIES PRESSURE WASHER
38
PROBLEM
WATER
TEMPERATURE
TOO HOT
DETERGENT NOT
DRAWING
PUMP RUNNING
NORMALLY BUT
PRESSURE LOW ON
INSTALLATION
TROUBLESHOOTING
POSSIBLE CAUSE
Incoming water to machine warm or hot
Gas pressure too high
Detergent line sucking air
Defective high limit switch
Incorrect burner nozzle size
Insufficient water supplied
Restricted water flow
Air leak
Detergent metering valve packing not
tight or packing worn
Filter screen on detergent suction hose
plugged
Dried up detergent plugging metering
valve
High viscosity of detergent
Restriction behind float tank screen
removed
Hole in detergent line(s)
Strainer basket plugged
Connections on selector valve loose
Detergent solenoid not opening (where
applicable)
Pump sucking air
Valves sticking
Unloader valve seat faulty
Nozzle incorrectly sized
Worn piston packing
OPERATOR'S MANUAL
SOLUTION
Lower incoming water temperature.
Call local gas company.
Tighten all clamps Check detergent lines for
holes.
Replace.
See exploded view parts list.
Check water G.P .M. to machine.
Check nozzle for obstruction, proper size.
Tighten all clamps. Check detergent lines for
holes.
Tighten nut. Replace valve or packing.
Clean or replace.
Disassemble and clean thoroughly.
Dilute detergent to specifications.
Install restriction.
Repair hole.
Remove and clean.
Put teflon tape on all pipe connections.
Check flow switch, replace detergent
solenoid.
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 serial
plate for proper size).
Check and replace if necessary.