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2.1.2 MAXBlend2 Setup
1. Connect the pressurized air source to the air inlet fitting (see page 3 for location).
2. Connect the pressurized oxygen source to the oxygen fitting (see page 3 for location).
3. Flush gas at the highest possible flow rate through the blender for at least one minute
to eliminate any particulate that may have been introduced into the system during
handling and installation.
2.1.3 Sensor Installation
1. Plug the sensor cable into the cable port on the sensor. Thread and tighten
the locking shroud to lock the cable in place.
2. Press the ON/OFF key . Insert the sensor into the sensor port on the left
side of the MAXBlend2 behind the flowmeter.
3. Allow adequate time for the sensor to equilibrate to ambient temperature.
4. Follow the desired calibration procedure in section 2.8.
2.2 Monitoring
Before use on a patient, the oxygen concentration of the delivered gas should
be checked at the setting intended for use.
To begin monitoring, press the ON/OFF key located on the front panel
(if necessary). Monitoring will begin immediately.
Should oxygen level exceed either the HIGH or LOW alarm set points, the red
alarm indicator on the front panel will illuminate indicating either a high or low
oxygen condition within limits or the limits are adjusted.
To conclude monitoring, press the ON/OFF key located on the front panel.
This will place the MAXBlend2 in a standby mode in which the display
and alarm circuits are not functional, but the gas blender supply hoses will
continue to supply mixed gas if the inlet hoses have not been disconnected.
2.3 Alarm Setting Procedure
2.3.1 Low Alarm Setting
To adjust the low alarm setting:
1. Press the Un-lock key to unlock the keypad. Note the LOW, Smart Alarm,
CAL and HIGH icons will begin to flash indicating the SET OPERATING MODE.
2. Press the DOWN (LOW ALARM) key on the keypad.
NOTE: the Low Alarm digits begin to flash indicating the Low Alarm manual setting.
3. Use the UP and DOWN keys to set the low alarm to the desired value.
Pressing the arrow keys changes the value in 1% increments. If the keys are held
down for more than 1 second the display will scroll at a rate of 1% per second.
NOTE: If 30 seconds elapse between key actuations, the system will store the latest
high alarm setting and will revert to normal operation. If this occurs inadvertently,
simply repeat the alarm setting procedure.
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