Anaesthetic Gas Scavenging Systems HTM/ISO Specification Sheet
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Anaesthetic Gas Scavenging Systems HTM/ISO Specification Sheet - 1

Anaesthetic Gas Scavenging System HTM02-01/HTM2022/ISO7396-2 SPECIFICATION Anaesthetic Gas Scavenging System The Anaesthetic Gas Scavenging (AGS) System shall comply with HTM 02-01, HTM2022 and either EN ISO 7396-2 or BS 6834. The AGS system shall be a dedicated, specifically designed active extraction and disposal system for waste anaesthetic gas. It shall provide a maximum flow rate of 80 l/min (EN ISO 7396-2) or 130 l/min (BS 6834) with a 1 kPa resistance to flow, and a minimum of 50 l/min (EN ISO 7396-2) or 80 l/min (BS 6834) with a 2 kPa (EN ISO 7396-2) or 4 kPa (BS 6834) resistance to flow at each terminal unit, irrespective of the number of terminal units in use. The AGS system shall use dedicated radial blowers in a simplex or duplex configuration. The AGS pump assemblies shall be skid mounted and included on the skid shall be the simplex or duplex pump(s), motor control unit(s) with starter/isolator, moisture drain flask and flexible connector(s) to connect the plant to the pipeline. Each pump shall include an electric motor and directly coupled impeller assembly. Impeller bearings in the pump(s) shall not require lubrication. The pump(s) shall be air cooled and rated for continuous operation. Vacuum/Flow Regulating Valve A vacuum/flow regulating valve shall be provided and positioned at the pump, comprised of a spring-loaded plate valve and inlet silencer. The valve should be changeable with the pipeline inlet in order to provide flexibility on site. The plate shall control air ingress into the pipeline system, thereby controlling the vacuum level within. An optional air inlet filter shall be available should the air quality be poor/dusty offering further protection against dirt ingress into the pump. Additional in line vacuum/flow regulating valves may be installed if required and shall be determined by the pipeline designer. The vacuum/flow regulating valve shall ensure a maximum vacuum of 200mb below atmospheric pressure is not exceeded and shall be factory preset at 150mb. Control System Each motor control panel shall incorporate an emergency panel isolation switch facility, which controls all electrical power to the exhauster unit, remote start switch panels and system indication lights. All control and status indication circuitry shall be limited to 24V a.c. A green ‘POWER ON’ indicator shall be fitted to the starter/ isolator panel, and shall illuminate whenever power is available to the 24V control and indication circuit. A ‘HAND/OFF/AUTO’ switch shall be provided to control operation of the pump, running the pump continuously when selected to ‘HAND’. When selected to ‘AUTO’, control of the pump shall be passed to the remote start switch panels. Operation of any of the remote start switches shall activate the pump. The pump shall continue to run until all remote switches are selected ‘OFF’. The starter/isolator panel shall incorporate a thermal protection overload device. The thermal protection overload device shall also monitor the electrical power supply and phase input. In the event of a fault, the overload device shall break the circuit to the pump, preventing operation until the system is manually re-set. Operation of the overload device shall also break the circuit to the remote start switch panels, extinguishing the green running indicator. Atlas Copco Ltd. trading as Atlas Copco Medical Unit 18 Nuffield Way, Abingdon, Oxfordshire, UK OX14 1RL www.beaconmedaes.com Simplex starter/isolator panels c/w alarm pressure switch and duplex units incorporate line pressure switch. This line pressure switch monitors vacuum levels and provides an additional control of the remote start switch and starter/isolator panel green ‘RUNNING’ indicators. The pressure switch shall also include a digital display providing an accurate readout of the vacuum level in the pipeline in order to assist with installation/commissioning and annual re-commissioning. Simplex installations shall use remote start switches that include a red ‘PLANT EMERGENCY’ indicator. This indicator shall illuminate on all remote start switch panels if the vacuum level falls below the pressure switch set point level when the pump has been called, or if the overload trips. The on/off rocker switch shall include a green illuminated surround to indicate ‘mains on’. Duplex installations shall use remote start switches that include an amber ‘PLANT FAULT’ indicator. This shall illuminate, if either pump is set to ‘HAND’, or if one of the overloads trip. A red ‘PLANT EMERGENCY’ indicator shall also be provided and shall illuminate on all remote start switch panels if the vacuum level falls below the pressure switch set point level when the pump has been called. The on/off rocker switch shall include a green illuminated surround to indicate ‘mains on’. Where a duplex system is installed each pump shall be controlled by a separate motor control panel to enable servicing of either pump or control gear whilst maintaining system operation. Volt free relay kits for replicating alarm conditions to BMS shall be available as an optional extra. To be either installed either at factory or as a retro-fit kit for onsite installation. Terminal Units Terminal unit shall be provided with an adjustable orifice to allow balancing of the terminal unit flows during commissioning. Venturi style terminal units are not acceptable. Terminal units shall not be connected to the medical vacuum system. The standard range of BeaconMedæs Anaesthetic Gas Scavenging System are ‘CE’ marked under the Medical Devices Directive 93/42/ EEC with approval from notified body no. 0088 (Lloyd’s Register Quality Assurance). Under this directive, the specified p

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Anaesthetic Gas Scavenging Systems HTM/ISO Specification Sheet - 2

AGS Pump Assembly Details - Standard Models CD TS O Notes... 1. Noise levels are averages, measured in accordance with ISO 517:1996 Free Air Aspiration and ISO 2151 Mean Sound Level 2. Service connections are copper to BS EN 13348 and relate to the external pipe diameter Atlas Copco Ltd. trading as Atlas Copco Medical Unit 18 Nuffield Way, Abingdon, Oxfordshire, UK OX14 1RL www.beaconmedaes.com

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