All products bear the CE Conformity Marking.
This marking denotes that the products
conform to the safety guidelines and directives
laid down by the European Union.
1.2 Guidelines and Directives
The products comply with the following
guidelines and directives:
• Machinery Directive 98/37EC
including amendments.
• Electromagnetic Compatibility 89/336/EEC
including amendments.
• Low-Voltage Directive 73/23/EEC,
including amendments.
• Pressure Vessel Regulation 87/404/EEC.
1.3 General Information
• The Instructions for Assembly and Use form
an integral part of the machine. They must
be kept close to the machine and in
readiness whenever required. Precise
observance of these instructions is a prior
condition for use of the machine for the
intended purpose and for its correct
operation.
These Instructions for assembly and use
should be passed on to future users if
necessary.
• Safety for the operator as well as troublefree operation of the machine are only
ensured if use is made of original equipment
parts. Moreover, use may only be made of
those accessories that are specified in the
technical documentation or that have been
expressly approved and released by Dürr
Dental for the intended purpose.
If and where use is made of accessories or
consumer supplies from outside sources,
Dürr Dental are unable to assume any
guarantee for safe operation or safe
functioning.
• No warranty claims are accepted in respect
of damage arising from the use of
accessories or consumer supplies from
outside sources.
• Dürr Dental only regard themselves as being
responsible for the unit from the angle of
safety, reliability and proper functioning if
assembly, resettings, changes or
modifications, extensions and repairs have
been carried out by Dürr Dental or an
agency authorised by Dürr Dental and if the
machine is used in conformity with the
Instructions for Assembly and Use.
• The Instructions for Assembly and Use
conform to the relevant version of the
machine and the underlying safety standards
valid at the time of going to press. All
proprietary rights are reserved in respect of
the specified circuitry, methods, names,
software programs and equipment.
• Any reprinting of the technical documentation,
in whole or in part, is subject to prior written
approval of Dürr Dental.
1.4 General Information Concerning
Safety
The compressor has been designed and
constructed by Dürr Dental in such a way that
hazards occurring when using the machine for
the intended purpose are ruled out to the
fullest extent possible. Even so, we feel
obliged to draw attention to the safety
precautions described below as a means of
ruling out any remaining hazards.
• When operating the compressor the laws
and regulations in force in the place of use
must be observed! In the interest of safe
operation, the operator and user are
responsible for observing such regulations.
• The original packaging has to be kept in a
safe place in case of having to return the
unit.
Ensure that the packaging is kept out of the
reach of children. Only the original packaging
warrants optimum protection of the unit
during transport.
In the event of the unit having to be returned
during the period of guarantee Dürr Dental
does not assume any liability for damage in
transit due to faulty or improper packing!
• Each time prior to using the machine the
user must check to ensure that it is
functionally safe and in proper condition.
• The user must be familiar with how to
operate the machine.
• The product is not intended for use in areas
3
of rooms that are exposed to risk of
explosion. Explosion hazards may result
from the use of inflammable anaesthetics,
skin cleansing agents, oxygen and skin
disinfectants.
• The machine is not suitable for operation in a
combustion-stimulating atmosphere.
1.5 Safety Instructions on Protection
from Electric Current
• The compressor may only be connected to a
properly installed earthing contact-type
socket or CEE-power socket.
• Prior to connecting up the machine a check
must be carried out to see whether the
mains voltage and mains frequency
specified on the machine conform to the
data applicable to the supply mains.
• Prior to being put into operation, the
machine and the lines
for damage. Damaged lines, socket outlets
and plugs must be replaced immediately.
• In hazardous situations or in the event of
technical faults occurring, disconnect the
machine from the mains immediately
(disconnect plug from mains).
• When carrying out repair or maintenance
work of any kind, the mains plug must
always be disconnected from the socket. In
addition, air must be removed from all
pressure lines and the pressure tank
depressurised.
• All installation work must be carried out by a
suitably qualified engineer.
need to be inspected
1.6 Warning Information and Symbols
In the Instructions for Assembly and Use, as
well as on the packaging and the product
itself, use is made of the following terms or
symbols to denote data or information of
special importance:
Information and/or mandatory
regulations or prohibitions for the
prevention of personal injury or
substantial property damage.
Warning of dangerous electrical
voltage.
Special information regarding the
economical use of the machine and
other information.
CE-Marking
Disconnect mains plug.
Caution! Hot surface.
Caution! Compressor can start up
automatically!
Make due allowance for environmental
effects. Do not operate the machine in
a damp or wet environment!
Recycling
Observe Instructions for Assembly and
Use!
Date of manufacture
4
2. PRODUCT INFORMATION
2.1 Use for the Intended Purpose
The compressor is intended to be used for
generating compressed air required for
operating dental units of equipment or for
similar applications.
Installation in medical care facilities:
In designing and constructing the
compressor, allowance has been made for the
requirements of medical products where
applicable. Accordingly, the unit can be used
for installation in medical care facilities.
If the unit is installed in medical care facilities,
the requirements stipulated in Directive 93/42
EEC IEC 601-1 as well as the relevant norms
must be observed as applied to installation
and assembly.
2.2 Use other than that for the
Intended Purpose
The compressed air produced by
the compressor is unsuitable for
operating breathing equipment or
similar facilities without additional
filters required for the operating
area.
• The compressors are designed to be
operated in dry, ventilated rooms, ambient
temperature +10 to +40 °C.
• Do not expose the compressor to rain. The
machine must not be operated in a damp or
wet environment. Use is also prohibited in
proximity to gases or combustible liquids.
• Prior to installing the compressor in medical
facilities, it must be ensured that the available medium complies with the requirements
stipulated for the relevant purpose in each
individual case. Observe the particulars
given in Chapter 4. "Technical Data".
When installing, classification and
conformity rating must be carried out by the
manufacturer of the ultimate product.
• Any other use or use beyond what is
specified is deemed to be not for the
intended purpose. The manufacturer
accepts no liability for damage resulting
therefrom. All risk is borne solely by the
operator/user.
2.3 Product Description
The compressor generates an oil-free, dry and
filtered compressed air required for operating
units of dental equipment.
3. SCOPE OF DELIVERY
Compressor with / without
dry-air system
Instructions for assembly
and use .................................... 9000-610-38/30
86 x 76 x 5186 x 76 x 5186 x 103 x6386 x 103 x 6364 x 49 x 4664 x 49 x 4664 x 49 x 46
–––75 x 103 x 6364 x 49 x 4464 x 49 x 4464 x 49 x 44
171c – 147
c
––––100
86c – 76
c
165c – 135
c
76c – 66
c
130c –115
c
– 85
c
c
6555
4540
Climatic Conditions for Storage and Transport
Temperature –25 °C to +55 °C, 24h to +70 °C
Relative Atmospheric Humidity 10 % to 90 % (without condensation)
Climatic Conditions for Operation
Temperature +10 °C to 40 °C
Relative Atmospheric Humidity up to +70 %
7
5. OVERVIEW OF FUNCTIONS OF COMPRESSORS
5.1 Compressor with Dry-air System
13
12
16
15a
1
2
3
4
10a
9
8
1
5.2 Compressor without Dry-air System
10b
13
11
7
14
6
5
11
17
15b
8
2
8
6. FUNCTIONAL DESCRIPTION
6.1 Compressor with
Dry-air System
Concise Functional Description:
The compressor aggregat (10a) draws in
atmospheric air which is then compressed
without any contamination by oil.
The compressor feeds the compressed oilfree air to the dry-air system (2).
The dry-air system removes moisture from the
compressed air.
Now in an dry state, the clean, oil-free air is
made available in the pressure tank (8) to the
consumers (e.g., turbine).
Detailed Functional Description:
• •
• Compressor Set
• •
Atmospheric air is drawn in via the intake
filter (13). The cylinder piston (12) of the
compressor set (10a) then compresses the
air. The inlet valve/outlet valve blocks the
direction of flow so that the compressed air
is forced to the dry-air system (2).
• Dry-air System
The compressed air is conducted round the
dry-air system via the spiral-shaped cooling
tube (3).
Inside the cooling tube, the compressed,
heated air cools down and a large percentage
of the moisture present in the air is extracted
in the form of condensation water.
This pre-dried air then passes into the
pressure tank (8) via the drier (14), sintered
metal filter (4), fine-mesh or sterilisation filter
(1) and non-return valve (15a).
The non-return valve (15)a serves to prevent
any backflow of the compressed air emerging
from the pressure tank.
Each time the compressor is switched off,
the condensation water is blown into the
water collecting (5) through by means of the
dry-air system and the pressure hoses are
vented on the compressor.
• •
• Regeneration of the Dry-air System
• •
The polyamide band (16) fitted inside the
hygrostat expands due to the presence of
humidity. If the permissible relative humidity
inside the pressure tank (8) is exceeded, the
valve on the hygrostat responds by opening, causing air to flow out of the pressure
tank in the opposite direction. This can be
heard blowing out underneath the dry-air
system (2). In this phase, the system undergoes a process of regeneration, for which
purpose the compressor must be at a
standstill. This process of regeneration will
continue to repeat itself until the relative
humidity originally set on the hygrostat (16)
is attained.
• •
• Valve Unit with Pressure Switch
• •
Whenever compressed air is withdrawn for a
certain consumer (e. g., turbine), the pressure
inside the tank is reduced. When the minimum
tank pressure set on the pressure switch (11)
is attained, the compressor will be switched
on again via the pressure switch. As soon as
the maximum tank pressure (7.5 bar) set on
the pressure switch is attained (5,5), the
compressor will switch itself off. The maximum permissible tank pressure of 10 bar is
marked in red on the pressure gauge (7).
The safety relief valve (6) serves to prevent the
maximum permissible tank pressure of
10 bar from being exceeded.
The drain cock (9) is used for draining off
condensation water from the pressure tank,
this being done by opening the valve.
Also refer to Section 12.3 "Draining Off
Condensation Water".
6.2 Compressor without
Dry-air System
• •
• Compressor set
• •
The compressor set (10b) draws in atmospheric air via the suction filter (13) which is
then compressed without any contamination
by oil by means of the cylinder piston. The
inlet valve/outlet valve blocks the direction of
flow so that the compressed air is forced
through the non-return valve (15b) into the
pressure tank (8).
• Pressure Switch
The compressor set (10b) continues to feed
compressed air until the maximum pressure
preset on the pressure switch (11) is attained
inside the pressure tank (8) and the
compressor set switches itself off.
After the compressor set has switched itself
off, the pressure hoses are vented via vent
valve (17).
• •
• Valve Unit with Pressure Switch
• •
Refer to previous section, "Detailed Functional
9
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