15
NEPTUNE 7 FA
1)
Options / model variants
Original instructions
EN
5 Applications and methods
Efficient high pressure cleaning is achieved by following a few
guidelines, combined with your own personal experience of spe-
cific cleaning tasks. Accessories and detergents, when correctly
chosen, can increase the efficiency of your pressure washer. Here
is some basic information about cleaning.
Encrusted or thick layers of dirt can be loosened or softened up by
a period of soaking. This is for example an ideal method within ag-
riculture – for example, within pig sties. The ideal soaking method
can be achieved by using foam or simple alkaline detergent. Let
the product lie on the dirty surfaces for about 30 minutes before
pressure washing. The result will be a much quicker high pressure
cleaning process.
Foam or detergent should be applied onto dry surfaces so that the
chemical product is in direct contact with the dirt. Detergents are
applied from bottom to top, for example on a automobile bodywork,
in order to avoid “super clean” areas, where the detergent may
collect in higher concentrations and streams downwards. Let the
detergent work for several minutes before rinsing and never let it
dry on the surface being cleaned.
Detergents are more effective at higher temperatures. Greases,
oils and fats can be broken down more effectively at higher tem-
peratures also. Proteins can be cleaned at temperatures of around
60°C (140°F). Oils and traffic film around 70°C (158°F), and grease
can be cleaned at 80°-90°C (176-194°F).
In order to break down tough layers of dirt, additional mechanical
effect may be required. Special lances and rotary or wash brushes
offer this supplementary effect that cuts through dirt.
High pressure is not always the best solution and may also dam-
age surfaces. The cleaning effect also depends upon water flow.
Pressure levels of around 100 bar (1450 psi) may be sufficient for
vehicle cleaning (in association with hot water) and higher flow
levels give the ability to rinse and flush away large amounts of dirt
easily.
5.1 Techniques
5.1.1 Soaking
5.1.2
Detergent and Foam
5.1.3 Temperature
5.1.4 Mechanical
Effect
5.1.5
High Water Flow or
High Pressure
