8
4. Applications and use for the intended purpose
Wet separator, suitable for Zone 22,
designation according to ATEX II 3D
for the precipitation of dusts in a liquid.
The NA 7-11 wet separator can be
used to precipitate dry, wet, hot,
smouldering and explosive, fine and
coarse media (except for explosives to
§ 1...) in water or other liquids as may
be necessary.
The wet separator NA 7-11 must be
operated only with a sufficient quantity
of receiving liquid appropriate to the
material to be vacuumed.
Always check the safety data sheets
for information about handling the
materials to be vacuumed in combina-
tion with the receiving liquid.
WARNING!
It is important to use only water or other NON-FOAMING liquid for wetting the
vacuumed material.
Operation of the wet separator if the fill
level of the liquid receiver is above the
maximum or below the minimum level.
Failure to check the safety data sheets
for information about handling the
materials to be vacuumed in combina-
tion with the receiving liquid.
Positioning the wet separator in rooms
(or outdoors) where temperatures can
drop below freezing. This could cause
the materials and liquid to become fully
or partially frozen.
4.4 Improper use
4.3 Intended use
The vacuumed material is drawn
through a suction connection into the
wet separator. Air, dust and liquid are
swirled around inside the liquid con-
tainer. The dust particles become wet
on contact with the liquid, causing
them to collect in the form of sediment
at the bottom of the container.
Liquid that is drawn in along with the
transport air collects on the moisture
4.1 Functional description
If the NA 7-11 is operated with a water
seal, the water consumption at an air
flow rate of
130 m
3
/h = approx. 0.26 l/h.
4.2 Liquid consumption
separator positioned in the suction air
stream and drips into the liquid con-
tainer. Any remaining dust particles are
separated out in the three filter car-
tridges (dust class M as standard; dust
class H available as an option). The
vacuum is generated by a side chan-
nel blower.
Check the fill level in the wet separator through the viewing panel before
commissioning and before each start-up, and at regular intervals during
operation.
Avoid any bodily contact with the
hose -
even during the suction
process.
Do not route the hose over the shoul-
der or around the body.
