R/M
Reserve/Manual
This last, most positive switch setting causes the
EDS-D1 unit to respond to breathing actions with
a fixed 1/2 second long pulse regardless of the
actual cabin pressure altitude. This would equate
to a 100% oxygen flow setting for a conventional
delivery oxygen device. The effective (or
equivalent) flow rate at this setting is about 10
liters per min. This setting is intended to be used
as an emergency setting while still providing a
wide conserving margin. This setting is intended
for situations where the user can indulge in deep
(reserve) inspiration cycles. This setting should provide the primary respiration system (lungs and blood) a
better than 90% utilization of the oxygen supplied during most reserve (deep) inspiration cycles.
The R/M setting should be used while oxygen is supplied by adjustable regulators. Aircraft with built-in oxygen
systems that may have an ACR (Altitude Compensating Regulator) that does not exceed an outlet pressure of 35
psig. By using the EDS-D1 with systems that have an ACR (Altitude Compensating Regulator) the operator
will benefit from a much greater duration in oxygen usage without any modification to the existing system. If
the EDS-D1 unit is used with one of our standard regulators, such as our XCP, XCR, RCV/RCR the R/M
setting is intended for times when you may desire to receive oxygen during the (near) full reserve inspiration
cycle to manage possible acute dyspnea (shortness of breath) and/or anxiety while under stressful and/or
demanding flying conditions. In addition, this setting can be used as a "full-on" mode to pre-charge yourself
with oxygen or for emergency purposes.
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3 0
2 5
2 0
1 5
1 0
5
0
PRESS ALT X 1K
PULSE UNITS
While in the
"R/M" mode the
delivery curve
is simply at
maximum
regardless of
the pressure
altitude.
R/M
Switch as seen in the
Reserve/Manual setting.
100% delivery or for use
with regulators that are
flow-rate adjustable.
F MODES
Floor & Face Mask
These next four settings deserve your attention.
The F-Mode settings are F10, F15, F20 and
F25, called the floor or facemask settings.
These settings cause the EDS-D1 unit to add
additional oxygen equivalent to the indicated
setting, thus raising the floor by that much.
For instance, if you are at a pressure altitude
of 10,000 ft, and you set the unit to the F10
setting you will get an additional (1.0
liter/min.) or 10,000 ft. worth of oxygen added
to the pressure altitude your are currently at.
This results in an effective flow rate of 2.0
liter/min. or a total of 20,000 ft. worth of
oxygen. However, near sea level the settings
will simply add in the effective flow rate of 1.0
liter/min. for the F10, 1.5 liter/min. for the F15, 2.0 liter/min. for the F20 and 2.5 liters/min. for the F25
settings. The F10 or F15 settings are suitable for use with most facemasks.
Changes in pressures altitudes cause the unit to deliver the additional (over and above the floor setting) amount
of oxygen for that pressure altitude. Once again, for example, if you are at a pressure altitude of 5,000 ft. and
you select the F10 setting you will then receive (for each breath up to 25 per min.) the effective flow rate of
5,000 + 10,000 = 15,000 ft. or 1.5 liters/min. The unit will be active at all altitudes (like "N" mode) while in
any of the "F mode" settings. The "F" modes are very useful in situations where you may wish to pre-charge
yourself with oxygen before a long-term high ascent or as needed for losses associated with a facemask. The
"F" modes enable you to ensure proper oxygenation after you have descended from long-term high altitude
flights, even after having descended to flight levels not legally requiring oxygen.
3 0
2 5
2 0
1 5
1 0
5
0
PULSE UNITS
PRESS ALT X 1K
N, D5, D10 & D12
F10
F15
F20
F25
F Mode curves
F15
Switch as seen in the Floor
mode. The F15 setting
provides 15,000 ft. amount of
oxygen referenced to sea level
or that respective additional
amount throughout the
pressure altitide curve
