NaceCare Solutions DP620 - Manual (Page 15)

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The two tanks must be filled with the special product mixed with water in the
proportions and according to the instructions on the outside of the bottles,
after which the same system is followed as for the normal washing operation.
(The special product can be ordered for home delivery). It is possible to
obtain a greater brilliance by passing the Duplex over the floor fitted with the
horsehair or Scotch-brite brushes.
Very dirty floors:
Whenever it is necessary to give a heavy wash to floors which have collected
dirt over a long period of time with all sorts of stains and the build-up of
solvents from normal detergents it is recommended proceeding in the
following manner:
After moving the MOP-UP lever to the top position, use the lever of the
handle to allow abundant liquid product/water solution - preferably heated to
a temperature of 35/40°C – to flow onto the floor.
Under these conditions the recovery device will be disabled and the liquid
poured onto the floor will serve for turning the solution into an emulsion,
thus allowing the detergent to exert a greater efficacy.
Move the machine forwards over the entire wet surface of the floor either
moving in all directions or following a precise pattern.
Once this washing operation is over, the MOP-UP lever must be moved down
to the bottom in order to reactivate the automatic system for recovering the
dirty water.
(The MOP-UP lever must only ever be activated
when the machine is stopped)