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Form No. 702718 Rev. A March, 2005 91
Owner’s Manual - Regal Intensive Care Unit
4. Unplug the spiral cord from the oxygen
concentration meter (Figure 103).
5. Remove the complete oxygen sensor
assembly from the unit.
CAUTION: When working with the fuel
cell, observe the CAUTIONS on Page 85.
6. Unscrew the end cap from the oxygen
sensor (Figure 96).
7. Remove the fuel cell.
Note: You can transfer the existing fuel cell to the
new oxygen sensor, or install a new one.
Disposition of the fuel cell:
If you are transferring the existing fuel
cell to the new oxygen sensor, put the
cell aside for re-installation.
If you are going to use a new fuel
cell, discard the old cell.
Dispose of used fuel cells in accordance
with local, state, and Federal regulations.
Plug
Oxygen
Concentration
Meter
Spiral Cord from Oxygen Sensor
Figure 103. Oxygen Sensor Spiral Cord
and Plug
Installation
1. If you are using a new fuel cell, remove the dark red
shorting button (refer to the instructions packed with the
fuel cell).
Note: Watch the oxygen concentration meter as you perform
Step 2. The calibration needle moves to the right, then settles
down.
2. Place the fuel cell into the oxygen sensor. The end of
the fuel cell with the metal disk goes in first.
3. Gently, screw the sensor end cap back on. Be careful, the
threads are very fine and are easily damaged.
4. From the filter/fans compartment, string the oxygen sensor
spiral cord through the hole in the large, black mounting
ring, into the electronic compartment, and plug it into the
oxygen concentration meter (Figure 103).