ISO 7494-2:2015
Dentistry — Stationary dental units — Part 2: Air, water, suction and wastewater systems
ISO 7494-2:2015 specifies requirements and test methods concerning
a) the configuration of dental unit connections to the compressed air supply, water supply, suction supply, and wastewater drain plumbing,
b) the materials, design, and construction of the compressed air and water system within the dental unit,
c) the quality for incoming water and air, and
d) the performance of dental unit suction system.
ISO 7494-2:2015 also specifies requirements for instructions for use and technical description.
ISO 7494-2:2015 is limited to dental units that are not used for life support treatment of ambulatory patients or for oral surgery treatment requiring sterile air and water supplies. Amalgam separators are not included in ISO 7494-2:2015.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
4.1 Classification of suction systems
4.2 Classification of suction air volume flow rate
5 Requirements
5.1 Requirements for supply connections
5.2 Requirements for water and wastewater systems
5.2.1 Incoming water
5.2.2 Materials used for construction of procedural water systems within the dental unit
5.2.3 Backflow prevention device for dental units connected to the external drinking water supply
5.2.4 Cuspidors
5.2.5 Water venturi
5.2.6 Particle filter
5.2.7 Bacterial filter
5.2.8 Bottled water system supplying procedural water or solution
5.2.9 Retraction
5.2.10 Water disinfection systems
5.2.11 Water sampling connection point
5.2.12 Wastewater drain connection
5.3 Requirements for the air system
5.3.1 Incoming air (dental air)
5.3.2 Particle filters
5.3.3 Bacterial filters
5.4 Requirements for dental unit suction systems
5.4.1 Static vacuum pressure
5.4.2 Head loss
5.4.3 Air separators
5.4.4 Cannula connectors and cannula
5.4.5 Operating hoses with cannula connectors
5.4.6 Solids filter
5.4.7 Noise level
5.4.8 Dental unit suction source connection point
6 Sampling
7 Tests
7.1 Cuspidors
7.2 Water venturi
7.3 Systems directly connected to external drinking water supply
7.4 Bottled water system supplying procedural water or solution
7.5 Retraction
7.6 Particle filters
7.7 Bacterial filters
7.8 Water disinfection systems
7.9 Tests for dental unit suction systems
7.9.1 Static vacuum pressure test
7.9.2 Head loss test
7.9.3 Measurement of noise level
7.10 Water sampling connection point
7.11 Incoming water and air quality
7.12 Supply connections
8 Manufacturer’s instructions for use
9 Technical description
Annex A (informative) Schematic diagram of possible components and connections in a dental unit
Annex B (informative) Test sequences
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
4.1 Classification of suction systems
4.2 Classification of suction air volume flow rate
5 Requirements
5.1 Requirements for supply connections
5.2 Requirements for water and wastewater systems
5.2.1 Incoming water
5.2.2 Materials used for construction of procedural water systems within the dental unit
5.2.3 Backflow prevention device for dental units connected to the external drinking water supply
5.2.4 Cuspidors
5.2.5 Water venturi
5.2.6 Particle filter
5.2.7 Bacterial filter
5.2.8 Bottled water system supplying procedural water or solution
5.2.9 Retraction
5.2.10 Water disinfection systems
5.2.11 Water sampling connection point
5.2.12 Wastewater drain connection
5.3 Requirements for the air system
5.3.1 Incoming air (dental air)
5.3.2 Particle filters
5.3.3 Bacterial filters
5.4 Requirements for dental unit suction systems
5.4.1 Static vacuum pressure
5.4.2 Head loss
5.4.3 Air separators
5.4.4 Cannula connectors and cannula
5.4.5 Operating hoses with cannula connectors
5.4.6 Solids filter
5.4.7 Noise level
5.4.8 Dental unit suction source connection point
6 Sampling
7 Tests
7.1 Cuspidors
7.2 Water venturi
7.3 Systems directly connected to external drinking water supply
7.4 Bottled water system supplying procedural water or solution
7.5 Retraction
7.6 Particle filters
7.7 Bacterial filters
7.8 Water disinfection systems
7.9 Tests for dental unit suction systems
7.9.1 Static vacuum pressure test
7.9.2 Head loss test
7.9.3 Measurement of noise level
7.10 Water sampling connection point
7.11 Incoming water and air quality
7.12 Supply connections
8 Manufacturer’s instructions for use
9 Technical description
Annex A (informative) Schematic diagram of possible components and connections in a dental unit
Annex B (informative) Test sequences
Bibliography