DUO, DUO 2V, DUO 2
07/2019 - 15 - NP-DUO-5_07-2019-MD
wall-mounted, no
bacteriological filter
wall-mounted, with a
bacteriological filter
with a bacteriological filter
with a bacteriological filter
no bacteriological filter
no bacteriological filter
8.2.6. Equipotential bonding socket
The socket allows an equipotential bonding. (Fig.10)
9. PRODUCT FUNCTIONALITY
Compressor with suction unit(Fig. 1)
The air pump (1) draws in atmospheric air through an inlet filter (8) and compresses it through
a non-return valve (3) into an air tank (2) from which the device draws compressed air. If the
pressure in the air tank drops to the switch-on pressure, the pressure switch (4) turns on the
compressor and the compressor supplies compressed air into the air tank until it reaches the
switch-off pressure, when the compressor switches off. The pressure hose is vented through the
relief solenoid valve (13) once the air pumpis shut off. The safety valve (5) prevents the pressure in
the air tank from rising above the maximum allowed value. The drain valve (7) drains condensate
from the air tank. Compressed, oil-free filtered air is stored in the air tank ready for use.
Condensate must be drained from the air tank at regular intervals (see Chapter 19.1).
The suction pump (36) (two aggregates on DUO2) draws in air, thereby creating vacuum in the
suction lines that are connected to the device and is a source of vacuum for removing foreign
substances from the doctor’s work area. This air is then exhausted through an exhaust line routed
outside the operator's work area.
Compressor with suction unitand membrane dryer (Fig. 2)
The air pump (1) draws in atmospheric air through an inlet filter (8) and compresses it, feeding it
through the coolers (14) and the filter (15) into the dryer (9) and the dry, clean air is then fed
through the non-return valve (3) into the air tank (2). A part of the air is released from the dryer with
the captured moisture, which is manifested as a light air stream along the body of the dryer (9).
Condensate from the filter is automatically drained at regular intervals into the collecting bottle via
the condensate drain solenoid valve (16). The dryer ensures continuous drying of the compressed
air. The drain valve (7) drains condensate from the air tank when drying performance is checked.
Compressed, oil-free filtered air is stored in the air tank ready for use.
The pressure vessel does not need to be drained.
The suction pump (36) (two aggregates on DUO2) draws in air, thereby creating vacuum in the
suction lines that are connected to the device and is a source of vacuum for removing foreign
substances from the doctor’s work area. This air is then exhausted through an exhaust line routed
outside the operator's work area.
