906-0731-01-05 Rev. C ZOLL Ventilator Operator’s Guide 1-13• Loss of pulse signal can occur in any of the following situations:• The sensor is too tight.• Excessive illumination from light sources such as a surgical lamp, a Rubin lamp, orsunlight.• A blood pressure cuff is inflated on the same extremity as the one with an SpO2sensor attached.• The patient has hypotension, severe vascoconstriction, severe anemia, orhypothermia.• Arterial occlusion proximal to the sensor.• The patient is in cardiac arrest or is in shock.• Sensors:• Before use, carefully read the LNCS ® sensor directions for use.• Use only Masimo oximetry sensors for SpO2 measurements. Other oxygentransducers (sensors) may cause improper performance.• Tissue damage can be caused by incorrect application or use of an LNCS® sensorfor example, by wrapping the sensor too tightly. Inspect the sensor site as directedin the sensor Directions for Use to ensure skin integrity and correct positioningand adhesion of the sensor.• Do not damage LNCS® sensors. Do not use an LNCS® sensor with exposed opticalcomponents. Do not immerse the sensor in water, solvents, or cleaning solutions(The sensors and connectors are not waterproof). Do not sterilize by irradiation,steam, or ethylene oxide. See the cleaning instructions in the directions for reusableMasimo LNCS® sensors.• Do not use damaged patient cables. Do not immerse the patient cables in water,solvents, or cleaning solutions (the patient cables are not waterproof). Do notsterilize by irradiation, steam, or ethylene oxide. See the cleaning instructions inthe directions for reusable Masimo patient cables.• Do not use the pulse oximeter sensor during magnetic resonance imaging (MRI) scanning.Inducing current could potentially cause burns. The pulse oximeter may affect the MRIimage and the MRI unit may affect the accuracy of the dosimetry measurements.Batteries• Only use the Power Supply provided with the device. Use of any other power supply couldcause damage or create a fire and/or destroy the battery and unit.• If you witness a battery or the battery compartment starting to balloon, swell up, smoke, orfeel excessively hot, turn off the unit, disconnect external power, and observe it in a safeplace for approximately 15 minutes and send the unit for service. Never puncture ordisassemble the battery packs or cells.Operator Safety• Electric shock hazard: Do not remove equipment covers. You may only performmaintenance procedures specifically described in this manual. Refer all servicing toZOLL or a ZOLL-authorized service center.• Possible explosion hazard if used in the presence of flammable anesthetics or otherflammable substances in combination with air, oxygen-enriched environments, or nitrousoxide.• This device is not intended for use in explosive atmospheres.• Pins of connectors identified with the ESD warning symbol should not be touched. Alwaysuse precautionary procedures with ESD-sensitive connections.