Multiple Alarms; Backlight Operation; External Power Supply Operation; Calibration Procedures - Maxtec MaxBlend 2+p Instructions For Use Manual

To help differentiate the level of priority, the monitor provides three unique audible sequences.
ALARM
ALARM
PRIORITY
Line Power
Informational
Plugged In
Line Power
Informational
Unplugged
External DC
Power Supply
Informational
Voltage Out
of Range
No oxygen
sensor attached Medium
(E02)
Battery Voltage
too low for
Medium
device to
operate (E04)
Oxygen/
pressure level
Medium
above the high
alarm setting
Oxygen/
pressure level
Medium
below the low
alarm setting
Oxygen level
below the low
oxygen alarm High
setting and
lower than 18%
2.5.1 Multiple Alarms
When multiple alarms occur the LOW or HIGH alarm LED will flash respectively along with the
numeric alarm values that have been triggered. If both a LOW and HIGH alarm are triggered at
the same time the highest priority LED and tone will be produced. The alarm LEDs and tones
will automatically default to the highest priority alarm. Alarms will automatically clear once
the reading has returned within the specified alarm window.
2.6 Backlight Operation
To turn on the backlighting:
1. When the unit is on, pressing the Backlight button will turn the backlighting on for 30
seconds. An additional press will turn off the backlighting.
2. If the device is being used in a dark location, any button press will activate the backlight.
CAUTION: Excessive use of the backlight can reduce the life of the batteries.
2.7 External Power Supply Operation
To extend the life of the batteries, an external Maxtec approved 7.5V DC external power supply can
be purchased. Once connected to the unit, total power is supplied by the power supply. Batteries
are still required in the unit and will provide emergency power in the event main AC power is lost.
NOTE: Use only the Maxtec external power supply described in section 10.0.
ENGLISH
LOW
HIGH AUDIBLE
ALARM
ALARM LED ALARM
LED
Off Off 2 Pulses
Single Single
Yellow Yellow 2 Pulses
Pulse Pulse
Solid Solid
2 Pulses
Yellow Yellow
Pulsing Pulsing
3 Pulses
Yellow Yellow
Pulsing Pulsing
3 Pulses
Yellow Yellow
Pulsing
Off 3 Pulses
Yellow
Pulsing
Off 3 Pulses
Yellow
Pulsing
Off 5+5 Pulses
Red
NOTE: The power supply is not a battery charger.
DO NOT use rechargeable batteries.
AUDIBLE
ALARM
WARNING: Do not position the equipment in a way that it would be difficult to unplug the
REPEAT
power supply. Unplugging the power supply is the only means of disconnection or isolating
the equipment from AC mains power.
No Repeat
2.8 Calibration Procedures
2.8.1 Calibration to 100% Oxygen
No Repeat
The MaxBlend 2+p should be calibrated before being placed into clinical use. Thereafter,
Maxtec recommends calibration of the unit on a weekly basis. Frequent calibration will have
no adverse effect on the performance of the MaxBlend 2+p. Calibration should also be per-
Every 35
formed upon replacement of a sensor.
Sec.
The sensor is best calibrated while mounted in the MaxBlend 2+p sensor port. As in normal
operation, the oxygen sensor responds best when installed in a vertical position with the sen-
Every 25
sor facing down.
Sec.
Changes in barometric pressure can affect the oxygen reading. A 1% change in the barometric
pressure results in an error of 1% of the actual reading. (Example: If you are reading a 50%
oxygen mix and the barometric pressure drops from 1000mbar to 990mbar the reading will
Every 25
drop to 50% x (990/1000) = 49.5%). Maxtec recommends that you recalibrate after changing
Sec.
point-of-use elevation by more than 500 feet (150m).
It is best to calibrate the MaxBlend 2+p using the sensor port with a technical grade oxygen
standard (99.0% or better). Calibration of the unit with room air is less accurate over the full
Every 25
FiO2 operating range.
Sec.
Calibration is recommended if the user is unsure when last calibration procedure was
performed or if the measurement value displayed is in question.
To calibrate to 100% oxygen:
Every 25
1. Connect the oxygen supply line (pressure differential alarm may sound). Verify the
Sec.
sensor is plugged into the O2 sensor port and connected to the sensor cable. DO NOT
connect air supply line at this time.
2. Using the ON/OFF key
3. Rotate the FiO2 control knob to the 100% stop. Allow a few minutes for the reading to
Every 15
stabilize.
Sec.
4. Press the Unlock key
HIGH icons will begin to flash indicating the SET OPERATING MODE. Verify device is in O2
mode.
5. Press the Calibration key
display for approximately 5 seconds and then finish with 100.0%.
6. The unit is now calibrated and in the normal operating mode.
2.8.2 Calibration to Room Air
The MaxBlend 2+p can quickly be calibrated to room air (20.9%).
To calibrate to room air:
1. Connect the air supply line (pressure differential alarm may sound). Verify the sensor
is plugged into the O2 sensor port and connected to the sensor cable
connect oxygen supply line at this time. (If preferred, room-air calibration may be
performed by removing the sensor from the O2 sampling port and detaching the flow
diverter. If using this method, the gas-supply lines may remain attached.)
2. Using the ON/OFF key
3. Rotate the FiO2 control knob to the 21% stop. Allow a few minutes for the reading to
stabilize.
4. Press the Unlock key
HIGH icons will begin to flash indicating the SET OPERATING MODE. Verify device is in O2
mode.
10
, make sure the MaxBlend 2+p is in the power on mode.
to unlock the keypad. Note the LOW, SMART ALARM, CAL, and
on the keypad. The word "CAL" will appear on the
, make sure the MaxBlend 2+p is in the power on mode.
to unlock the keypad. Note the LOW, SMART ALARM, CAL and
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DO NOT