Binks HP 6/60, Руководство по эксплуатации, Страница: 15 / 43

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10. Make sure that the return pipe is still directed into the solvent tank. Carefully open the high
pressure filter relief valve to reduce the pressure in the spray material pump and in the high
pressure filter.
11. Point the airless gun into the tank of solvent and operate the trigger, to reduce any pressure
which may still exist in the spray material line and in the airless gun.
If working with waterborne spray material, the BINKS airless pump must again be
thoroughly rinsed with water before it is started up.
5.4 PREPARING AND ADJUSTING THE SPRAY MATERIAL
To be able to work without trouble and obtain a perfect surface, special care must be taken in pre-
paring and adjusting the lacquers and paints (please contact spray material manufacturer).
Before starting to spray, it may be necessary to use the solvent prescribed by the manufacturer to
thin the spray material. Add thinners until, after a good stir, the spray material runs easily off the
stick used for stirring. To prevent any uncertainty, we recommend that you use a dip measuring
cup, where the run-out time of the spray material indicates whether the spray material is still too
thick and therefore whether it is necessary to add more thinners. According to experience, the flow
time for lacquers and paints is 18 to 22 DIN4 sec. and for effect lacquer and coating filler materials
25 to 50 DIN4 sec. These figures relating to DIN EN ISO 2431 and have been established at a
temperature of 20°C. The lacquer and paint manufacturers generally state the best spraying con-
sistency for each of their products. If you use motor driven mixers, you must ensure that no air
bubbles form in the spray material.
To take a measurement, proceed as follows:
Immerse the measuring cup into the lacquer or paint which is ready for spraying until it is full to the
brim. To make the measurement, quickly take out the dip measuring cup and count how many
seconds it takes for the entire contents of the cup to run through the 4mm nozzle, i.e. up to the
time when you can establish the break-off point of the out-flowing paint. Count off the seconds on
a wristwatch, or time with a stopwatch. If, for example, a consistency of 19 DIN4 sec. is pre-
scribed, but the measurement is 24 DIN4 sec., you must add some more thinners and make the
measurement again.
We recommend that once you have used it, you clean the dip measuring cup immediately, so that
it can be used again for the next measurement.
Because two filters are used in the BINKS airless unit, a suction filter and the high pressure filter, it
is not necessary to filter the spray material before working with it.
If particularly high-quality coating work is involved, you can also use a gun filter from the BINKS
accessories range.
5.5 START-UP
1. Prepare the BINKS airless pump for start-up in accordance with section 5.2 and if necessary,
rinse in accordance with section 5.3.