ENGLISH
10
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6.0 CLEANING AND MAINTENANCE
6.1 Cleaning
The external surfaces of the device and its accessories can be cleaned and disinfected using the
process detailed below. Under normal use conditions, the surfaces of the sensor and T-adapter
/ flow diverter that come in contact with gas delivered to the patient should not become
contaminated. If you suspect that the sensing face of the sensor or internal surfaces of the
T-adapter / flow diverter have become contaminated, these items should be discarded and
replaced. Store the MaxO2 ME in a clean, dry location when not in use.
1. The MaxO2 ME needs to be cleaned between each patient's use.
2. Using Super Sani-Cloth germicidal disposable wipes (medical grade 2-in-1 cleaning /
disinfecting wipes) remove all visible contamination from the external surfaces of the
device and its accessories. Be sure to closely inspect and remove contamination from
seams and recesses on the device that may trap contaminants.
3. After all visible contamination is removed, use a second germicidal wipe to thoroughly
wet the surfaces of the device and accessories. Allow to remain wet for 4 minutes. Use
additional wipes if needed to assure surfaces are wetted continuously for 4 minutes.
4. Allow device to air dry.
5. Visually inspect each component for visible contamination.
CAUTION:
Excessive rubbing of labels may cause them to become illegible.
DO NOT
spray cleaning solutions directly onto the monitor, sensor or buzzer opening.
DO NOT
immerse the MaxO2 ME or sensor into liquid decontamination agents.
DO NOT
use strong solvent cleaners.
DO NOT
allow cleaning liquids to contact the face of the sensor as this may impair the
readings of the sensor.
DO NOT
attempt to sterilize the MaxO2 ME with steam, ethylene oxide or irradiation.
6.2 Alarm Testing
Periodic testing of alarms should be performed on a yearly basis.
To check the low alarm, adjust the low alarm setting to 23% or higher and expose the sensor to
room air (20.9%). The low alarm LED should flash with the alarm sound.
To check the high alarm, adjust the low alarm setting to 17% or lower and the high alarm
setting to 18% and expose the sensor to room air (20.9%). The high alarm LED should flash
with the alarm sound. If one or both alarms malfunction, contact Maxtec Certified Service
Technician.
6.3 Replacing Sensor Cable
After extended use or abuse to the sensor cable, the cable may begin to wear and lose its
ability to properly retract.
The cable can be removed and replaced by disconnecting the threaded locking shroud at the
sensor and monitor ends of the cable. Use only the Maxtec approved cable called out in Section
9.0 Spare Parts and Accessories.
NOTE:
Ensure the cable locking shroud is fully threaded on the sensor and the monitor.
7.0 SPECIFICATIONS
7.1 Base Unit Specifications
Measurement Range ............................................................................................................. 0.0-100%
Resolution .......................................................................................................................................0.1%
Accuracy and Linearity .......................................... ±1% of full scale at constant temperature, R.H.
and pressure when calibrated at full scale
Total Accuracy ...........................±3% Actual oxygen level over full operating temperature range
Response Time .........................................90% of final value in approximately 15 seconds at 23°C
Warm-up Time ............................................................................................................. none required
Operating Temperature ............................................................................. 15°C - 40°C (59°F - 104°F)
Storage Temperature .................................................................................. -15°C - 50°C (5°F - 122°F)
Atmospheric Pressure ................................................................................................ 800-1013 mBars
Humidity .....................................................................................................0-95% (non-condensing)
Power Requirements ............................................................ 4, AA Alkaline batteries (4 X 1.5 Volts)
Battery Life ........................................................................approximately 5000 hours in typical use
Low Battery Indication ................................................................ "LOW BAT" icon displayed on LCD
Sensor Type ................................................................................ Maxtec Max-550E galvanic fuel cell
Expected Sensor Life ......................... >1,500,000% O2 Hours over 2 years in typical applications
Alarm System .............................................................. high/low alarms, flashing red/yellow LEDs,
nominal 975Hz audio buzzer
(according to IEC 60601-1-8 Audible Alarms in Medical Equipment)
Alarm Volume (all priorities) .............................................................. 70 dB(A) ± 7 dB(A) at 1 meter
Low Oxygen Alarm Range ....................................................15%-99% (>1% lower than high alarm)
High Oxygen Alarm Range ................................................ 16%-100% (>1% higher than low alarm)
Alarm Accuracy ................................................................................ exact to displayed alarm value
Dimensions ..................................................3.6"(W) x 5.8"(H) x 1.2"(D) [91mm x 147mm x 30mm]
Weight ............................................................................................ approximately 0.89 lbs. (.40 kg)
Cable Length ............................................................................................... 9 ft. (3m) fully extended
Diverter Fitting ...............................................................fits industry standard, 15 mm "T" adapter
8.0 APPLICATIONS
8.1 Exposure to Anesthetic Gases
Because of the unique chemistry of the oxygen sensors provided with the MaxO
2
ME monitor,
there are no significant effects when exposed to commonly used anesthetic gases, however,
the monitor is not designed for exposure to flammable gas mixtures (See WARNING page
2).
INTERFERENT
VOLUME % DRY
INTERFERENCE IN O2%
Nitrous Oxide
60% balance O2
<1.5%
Halothane
4%
<1.5%
Enflurane
5%
<1.5%
Isoflurane
5%
<1.5%
Helium
50%, balance O2
<1.5%
Sevoflurane
5%
<1.5%
Desflurane
15%
<1.5%
NOTE:
Balance mixture 30% O2/70%N2O, unless otherwise specified.
8.2 Calibration Techniques in Pressurized
Systems
