Problem
Symptoms of
The device is not set to
sleep apnea
the correct pressure or
syndrome recur.
is not operating
properly.
Your physical condition
or pressure needs may
have changed.
The Sandman
The power supply cord
Duo™ or
is not correctly plugged
Sandman
into the power port.
DuoST™ device
No power.
does not light up
(no display).
The device's internal
fuse is defective.
The Sandman
Very high
Duo™ or
electromagnetic
Sandman
interference.
DuoST™ device
is not operating
smoothly and
appears to be
intermittent.
Humidifier does
not seem to heat
water.
Humidification is set at
0.
The heating element is
defective.
Water spilled
into the device.
Excessive
The water chamber
droplets of water
water level is too high.
appear in the
patient circuit or
A small amount of
in the mask.
water droplets are
normal, especially
during winter months.
Excessive condensation
of water vapor.
Sandman Duo/DuoST Patient Manual
Possible cause
Suggestion
Ask your home care provider to check the device
operation.
Contact your attending physician.
Check the connections between the device, the
power cord, and the power source.
Plug another device (e.g., lamp, radio, etc.) into
the power source to confirm that current is
available at the source.
Contact your home care provider.
Move the device away from sources of interference,
such as halogen lamps, cordless phones, etc.
When the device is battery-powered, the heated
humidification feature cannot be used.
Check
that
the
device
integrated heated humidifier, and humidification is
set at a level from 1 to 10 according to the
instructions under "", on page 44.
Confirm that the heated humidifier indicator is
displayed on the screen and is not blinking.
If the indicator is blinking or is not present, contact
your home care provider.
Unplug the device and allow it to dry at least 24
hours. Re-apply power and then check for proper
operation.
Check that the water level is not above the water
chamber maximum fill level; if it is, pour out the
excess water.
Lower the humidity level following the instructions
under "", on page 44.
Route the patient circuit under your blanket.
is
equipped
with
US – 35
an