Flow Delivery; Electrical Operation - CAIRE Companion 5 Technical Manual

Flow Delivery

Oxygen exiting the product holding tank flows through a pressure
regulator that reduces the high pressure oxygen to a lower, more
manageable pressure before it is delivered to the patient. This
ensures that the oxygen flowing from the device will work ap-
propriately with accessories and provide a safe pressure for patient
delivery.
The Companion 5 oxygen concentrator may be equipped with
an Oxygen Concentration Status Indicator (OCSI). In that case,
oxygen gas exiting the pressure regulator flows through a check
valve and then through the OCSI sensor. This is the same area of
the concentrator where the flow is measured. The PCB monitors
the concentration and the flow measured by these sensors, and
it will activate a warning light and audible alarm if the concentra-
tion drops below predetermined levels described in the Warning
Alarms section of the manual.
After exiting the concentration and flow rate sensors, oxygen
flows through the flow control valve (FCV) at the LPM flow rate
selected by the patient and indicated on the flow meter. The
oxygen gas then flows through the HEPA filter where unwanted
contaminants are removed. The oxygen is then delivered to the
patient through the outlet barb.
Figure 3: Schematic Diagram of Pneumatic Operation
Oxygen Concentrator

Electrical Operation

All electrical components of the CAIRE Companion 5 are all
controlled by a PCB. The electrical cord supplies mains AC power
(120 VAC @ 60 Hz or 230 VAC @ 50 Hz) to the main circuit board
when the power switch is in the "ON" (|)position. The PCB dis-
tributes the mains power to all of the electrical components. The
AC mains power is distributed and routed directly to the compres-
sor and the cooling fan. The compressor and cooling fan both
operate at 120 VAC @ 60 Hz or 230 VAC @ 50 Hz. The remaining
power travels to a DC power convertor/regulator. Figure 4 is a
block diagram showing the flow and distribution of mains power
into the concentrator.
or
or
Figure 4: Diagram of Mains Electrical Distribution
or
PN 14940837 B — 12