AirSep MN138-1 H - Manual (Page 16)

10
MN138-1 Rev H
02/14
4.0 Main Components
4.1 Components
The design of the VisionAire Oxygen Concentrator allows for easy access and removal of most
components. This allows you to perform repair and replacement of parts with minimal time and
effort.
To prevent accidental electric shock or burn, be sure to set the unit’s I/ 0
power switch to the “0” position and unplug the power cord of the unit
from the electrical outlet before you service the VisionAire Oxygen
Concentrator.
Some internal components, including the compressor may require cooling
down before component removal. Care should be taken when removing
all components.
Before reattaching tubing connections using a tie-wrap, remove 1/8 inch
(0.32 cm) from end of tubing to assure a proper seal. Tubing should be
cut evenly across width.
4.2 Cabinet Removal
4.2.1 Removing Front Panel
To remove the unit’s front panel, locate and unscrew both ¼ turn fasteners located at the
top of the unit.
4.2.2 Removing Back Panel
To remove the unit’s back panel, locate and unscrew both ¼ turn fasteners located behind
the humidifier bottle retaining strap within the humidifier bottle recess area of back
panel.
4.3 Compressor
The compressor is the “pump” within the oxygen concentrator that pushes the room air into the
top of the sieve beds. This allows oxygen to flow out of the bottom of the sieve beds in the
VisionAire unit.
Two different aspects of the compressor cause concern: the output and the sound level.
Output
Compressor output refers to how much compressed air the compressor can produce. This
depends upon the model of the compressor, stroke length, bore size, and cup seal condition. The
cup seals form the seal between the piston and the cylinder wall. As the cup seals wear, the
compressor’s output begins to gradually decrease. This reduction in compressor output results in
less air for the sieve beds. Therefore, the production of oxygen decreases.
Since this drop in oxygen production occurs over a long period of time, preventative
maintenance on the compressor is not required. You can continue a patient’s therapy on the
VisionAire unit as long as that unit’s oxygen concentration level at the prescribed flow rate is
within AirSep’s specifications.