VNG/VLP SERIES PRESSURE WASHER
OPERATOR’S MANUAL
12
OPERATING INSTRUCTIONS
1. STOP! Read operator’s manual be-
fore operating this machine. Failure
to read operation and warning in-
structions may result in personal in-
jury or property damage.
2. Turn all switches off.
3. Review installation instructions.
4. Connect water supply hose to the
inlet connector and turn water
on. Check for water leaks and tighten as needed.
5. Turn on the main gas supply and turn the gas valve
control knob into the “ON” position (see page 9).
6. Close the steam knob and chemical valve by turning
clock wise and setting the temperature control knob
between 200° - 225°.
7. Attach the desired high pressure nozzle into the wand
quick coupler by pulling the coupler collar back and
inserting the nozzle. Secure nozzle by pushing the
coupler collar forward.
8. Turn the pump switch on and pull the trigger on the
spray gun to activate the pressure switch which will
then start the machine. When spray gun is closed more
than one (1) minute, a time delay feature will turn the
machine off.
9. For hot water, push the burner switch to the ON posi-
tion and pull the trigger on the spray gun. Sparking
begins, pilot gas ignites and then the ignitor/sensor
will turn the main burner on. Optional remote control
requires the pump switch to be turned ON before the
burner and chemical switches will turn on.
10. To apply detergent, open the chemical valve counter
clockwise making sure that the chemical pick up tube
is in the chemical solution and not sucking air. On op-
tional remotes the chemical switch needs to be turned
to the OFF position then turned to the ON position to
activate the chemical solenoid.
11. To Stop: Turn the burner switch off and place the
chemical pick-up tube into fresh water. Open the
chemical valve and trigger gun allowing chemical lines
to be flushed and the burner to cool. Otherwise, coil
damage will result.
12. When steam is needed, remove the side panel and
turn the steam knob counterclockwise. Then turn the
temperature adjustment knob to 275°
13. After water has cooled, turn pump switch to OFF po-
sition. If the machine is going to be off for an extended
period of time, put the manual valve on the gas valve
into the OFF position.
14. Turn the water off. Protect from freezing.
PREVENTATIVE MAINTENANCE
1. Check to see that the water pump is properly lubricated.
2. Follow winterizing instructions to prevent freeze dam-
age to the pump and coils.
3. Always neutralize and flush chemical from system af-
ter use.
4. If water is known to be high in mineral content, use a
water softener in your water system or de-scale as
needed.
5. Do not allow acidic, caustic or abrasive fluids to be
pumped through the system.
6. Always use high grade quality Landa cleaning prod-
ucts.
7. Never run pump dry for extended periods of time.
8. Periodically delime coils as per instructions.
It is advisable, periodically, to visually inspect the burner.
Check air inlet to make sure it is not clogged or blocked.
Wipe off any oil spills and keep this equipment clean and
dry.
The areas around the Landa washer should be kept clean
and free of combustible materials, gasoline and other flam-
mable vapors and liquids.
The flow of combustion and ventilating air to the burner
must not be blocked or obstructed in any manner.
GENERAL OPERATING
TECHNIQUES
If dirt comes off relatively easy and no grease and oil are
present, cleaning with cold water will normally suffice. How-
ever, when grease and oil are present, hot water will greatly
speed up the process.
Clean with the spray nozzle a foot or so from the surface
being cleaned. For more difficult cleaning, move the nozzle
in closer.
If the unit is equipped with a shut-off gun and various nozzle
patterns, use the wide patterns for easy soil removal jobs
and the narrow patterns on the more difficult jobs or for
tight areas such as cracks and holes.
In most cases, faster results and better chemical economy
will be obtained by applying the chemical and letting it
“set” for a few minutes prior to rinsing. This enables the
chemical to do its soil penetrating and loosening work.
Most cleaning work terminates with a high pressure rinse
as part of the normal cleaning procedure. In some cases,
however, the last operation may be application of a chemi-
cal or detergent (sanitizing, for example). After such work,
run the unit for 20-30 seconds to clear pump and lines.
WARNING
READ OPERATOR’S
MANUAL THOR-
OUGHLY PRIOR TO
USE.