Materials In Direct/Indirect Contact With Patient; Operating Principles; Alarms - Safety Devices - Nidek Medical Nuvo Series User Manual

The accessories with a Nidek Medical part number reference, or included in the set of accessories supplied with the device,
comply with these requirements. Contact your equipment supplier to obtain these accessories.
Note: The use of certain administration accessories which are not specified for use with this concentrator may reduce its
performance and void the manufacturer's responsibility (ISO 8359).
AVAILABLE ACCESSORIES IF PRESCRIBED BYA PHYSICIAN
Humidifier:
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Cannula with 2 m (7 ft) tubing:
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Extension Tubing 7.7 m (25ft):
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Tubing Adapter:
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The items listed above are available from Nidek Medical Products, Inc.
5.2. Materials in direct or indirect contact with the patient
Concentrator enclosure
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Mains cable
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Cabinet air filter
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I/O (On/Off) switch
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Casters
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Flow adjustment knob
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Oxygen product outlet
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Printed labels
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Pipe/Tubing
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Humidifier
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Filter
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5.3. Operating principle
The compressor sends filtered ambient air to an electronic valving system, which allows compressed air to pass to the
column in production. The columns contain a molecular sieve, whose function is to adsorb the nitrogen and thus allow
oxygen to pass. The oxygen enriched product is then directed to a pressure reducing valve through the adjustable flow
meter to the oxygen outlet fitting. During this time, the column which is being "regenerated" is connected to the ambient air
and flow of oxygen enriched product is passed through it (from the column "in production"). In this way, when one column
is in production, the other is in a nitrogen desorption or "regeneration" phase. The oxygen enriched product finally passes
through a bacterial filter located prior to the oxygen outlet fitting.

5.4. Alarms - Safety devices

5.4.1. Alarms
No voltage detection: In the event of a loss of mains power, a intermittent audible alarm is activated and the
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green light turns off. Test alarm by actuating the I/O (On/Off) switch when the power cord is not plugged into the
wall receptacle.
Oxygen concentration: The oxygen monitor measures the concentration and activates an audible and visual
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alarm if it falls below the alarm set point percentage.
Blocked cannula: If supplied, the device Oxygen Concentrator has a No Flow Alarm. This device provides an
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continuous audible alarm and red light in the event the Oxygen Flow to patient becomes blocked.
Maintenance of the device alarms: No special maintenance is required. The alarm set-point is factory set and the
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setting cannot be adjusted. All OCSI models are set at 84% ± 2%. The equipment supplier checks that the device is
still operating correctly when the routine checks are performed on the device.
5.4.2. Safety devices
Compressor motor:
Thermal safety is ensured by a thermal switch situated in the stator winding (145 ± 5° C).
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______________________________________________________________________________________________________________
2010-2324CE-B
Part Ref. 9012-8774 (1-5LPM)
Part Ref. 9012-8780 (1-5LPM)
Part Ref. 9012-8781
Part Ref. 9012-8783
ABS/Polycarbonate
PVC
Polyester
Nylon
Nylon
ABS
SS or Brass
Polycarbonate
Aluminum, PVC, polyurethane and/or silicone
Polypropylene
Polypropylene
September 2015
Part Ref. 9251-8774 (2-10LPM)
Part Ref. 9251-8780 (2-10LPM)
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