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Form No. 702718 Rev. A March, 2005 37
Owner’s Manual - Regal Intensive Care Unit
5. Gently, screw the sensor end cap (Figure 38) back on. Be
careful, the threads are very fine and are easily damaged.
6. Re-insert the oxygen sensor/fuel cell into the wall
(Figure 36).
7. Proceed to Finish the Installation below.
New Style Units
1. Do not remove the oxygen sensor from the partition wall.
2. With the oxygen sensor in place in the partition wall,
unscrew the end cap from the oxygen sensor (Figure 38).
3. On the fuel cell, remove the shorting button - refer to the
instructions packed with the fuel cell.
Note: Watch the oxygen concentration meter (Figure 39) as you
perform Step 4. The black calibration needle moves to the right,
then settles down.
4. Place the fuel cell into the oxygen sensor body. The end
of the fuel cell with the metal disk goes in first.
5. Gently, screw the sensor end cap (Figure 38) back on. Be
careful, the threads are very fine and are easily damaged.
6. Proceed to Finish the Installation below.
Finish the Installation
1. Close and secure the electronics compartment door.
2. Close and secure the filter/fans compartment.
3. Using the calibration knob (Figure 39), position the black
needle in the oxygen concentration meter to 20.5% (the
percentage of oxygen in atmospheric air).
4. When you are finished working with the fuel cell, wash
your hands thoroughly.