NaceCare Solutions ST765 - Manual (Page 16)

VACUUM UNIT DOES NOT OPERATE
-
Check that aspiration motor switch (1) is on.
- Check if the recovery tank is full.
TOO MUCH FOAM IS GENERATED
Check that low-foam detergent is used. Add, if necessary, a small quantity
of anti-foam liquid to the recovery lark.
Remember that more foam is generated when the floor to be cleaned is not
very dirty. In this case use a more diluted detergent solution.
CHOICE OF BRUSHES
POLYPROPYLENE BRUSHES
[PPL) These are used on all types of floors and offer good resistance to
wear and to hot water (not more than WCI. PPL is not hygroscopic and
preserves its characteristics even when wet NYLON BRUSHES
These are used on all types of floors and offer good resistance to wear and
to hot water (even more than WCI. Nylon is hygroscopic and consequently
tends, over a period of time, to lose its characteristics when working on wet
floors.
TYNEX BRUSHES
The bristles on these brushes are impregnated with highly aggressive
abrasives. These are used to clean very dirty floors we recommend using
only the bare pressure necessary to prevent damage to the floor.
STEEL BRUSHES
Bristles are made of steel wire or flat blades or are mixed steel and synthetic
fibers. The steel wire brush is used to remove scale from badly uneven
floors or floors with wide joints between tiles. Brushes with flat steel
bristles (stiffer) are used to clean the toughest scale.
BRUSH THICKNESS
Thicker bristles are stiffer and should be used on smooth floors or floors
with narrow joints between tiles. We recommend using softer bristles when
floors are uneven or have deep joints or raised edges. Softer bristles
penetrate easier into joints. Remember that when brush bristles are worn
and become too short they become stiffer and are no longer able to
penetrate in depth. This is also because, as when using bristles that are too
big, the brush tends to jump and skip.
DRIVE DISKS
Drive disks are recommended for cleaning polished surfaces. There are two
types of drive disk: Traditional drive disks with sets of anchor stubs that
retain and drive the abrasive disk during operation.
CENTER LOCK
Drive disks that, in addition to anchor stubs, also have a plastic snap-in
center lock system. This permits perfect centering of the abrasive disk and
ensures it is kept anchored without detaching. This type of drive disk is best