Velleman WHPC02 - Manual (Page 6)

WHPC02 Rev 02
23.03.2010 ©Velleman nv 6
high-pressure rinsing is very effective. On vertical surfaces you should start applying the detergent at the
bottom and work your way up. This will prevent the detergent from running down and causing streaks.
High-pressure rinsing should be handles the same way. In case of particularly tough stains it may be
necessary to use a brush in combination with detergents and high-pressure rinsing.
6. Operation
Follow the procedure below for maximum efficiency in the shortest amount of time. Remember to use the
techniques outlined under “Preparations”.
Surface Preparation
Take the necessary precautions before you start: leave your car, garden furniture, etc. at a safe distance.
Make sure all windows and doors are closed tight. In addition, protect all plants and trees near the target
area from contact with the detergent.
Initial high-pressure Rinse
The next step is to spray the target surface with water to clear off any dirt or grime that may have
collected there. This will allow your detergent to attack the dirt that has worked its way into the cleaning
surface. Before triggering the gun, adjust the nozzle to a wide fan pattern and slowly adjust to the
desired spray pattern. This will help you avoid applying too much concentrated spray to the surface,
which could cause damage.
Detergent Application (see fig. B6)
NOTE: Use only detergents formulated for pressure washes. Test the detergent in an inconspicuous area
before use.
Respect the detergent manufacturer’s label directions to determine the correct detergent-to-water mixing
ratio (it will be ± 1 to 19 or 5.5%).
• Unscrew the top of the detergent injector and fill the injector with detergent.
• Screw the top back on.
• Remove the lance from the gun.
• Attach the detergent injector to the gun (fig. B7).
• Apply detergent so it thoroughly covers cleaning surface. Apply from bottom to top to prevent
detergent from sliding down and streaking.
• Allow detergent to remain on the surface for a few minutes. This is a good time to use a brush to
lightly scrub heavily soiled areas. Never allow detergent to dry on the cleaning surface.
• Remove the detergent injector from the gun.
• Rinse detergent from surface.
Remember to rinse the detergent injector with water after use!
Final Rinse
Start from the bottom up and make sure all detergent is removed from the target surface.
Shut-Down
• Make sure all detergent is flushed from the system.
• Turn off the motor.
• Turn off the water supply.
• Now trigger the gun to depressurise the system.
• Always wipe every surface of the pressure cleaner with a clean, damp cloth after use.
CAUTION: NEVER turn the water supply off before turning the motor off as this could seriously damage
the pump and/or the motor.
WARNING: NEVER disconnect the high-pressure discharge hose from the machine while the system is
pressurised. To depressurise: turn off the motor and then the water supply and squeeze
the trigger 2 to 3 times.
7. Tips to Prolong the Life of your High-Pressure Cleaner
• NEVER store the pressure cleaner outdoors or where it could freeze. This would seriously damage the
pump.
• Never operate the unit without water.
• The pressure cleaner is not meant to pump hot water. NEVER connect it to a hot water supply as it will
significantly reduce the life of the pump.