Q155 Service Manual
2-2
ii.
Turn the flowmeter adjustment knob counterclockwise until it stops (wide
open). Check the position of the ball inside flowmeter. It must be on the top of
flowmeter.
iii.
The oxygen purity indicator green light illuminates in ten minutes after switch
on.
2.3.
Routine Maintenance by the patient
To ensure concentrator normal work, the patient must perform the following
simple maintenance steps.
2.3.1.
General Caring
n
Daily inspection of the cabinet filter should occur. Lightly vacuum or sweep
off. Do not use any sharp or corrosive materials.
n
Always use, clean and/or replace the humidifier in accordance with
manufacturer's or dealer's instructions.
n
The patient should never service or open this machine. It is to be serviced by
qualified personnel only.
n
The oxygen concentration should be checked every 90 days for units without
optional oxygen sensors. The oxygen concentration should be checked every 6
months for units with optional oxygen sensors.
2.3.2.
Cleaning Cabinet Air Intake Filter
i.
Remove the cabinet filter and CLEAN AT LEAST ONCE A WEEK
depending on environmental conditions. (See
ii.
Figure 2-2)
iii.
Clean the cabinet filter with a vacuum cleaner or wash in warm soapy water
and rinse thoroughly. (See
iv.
Figure 2-3)
v.
Dry the filters thoroughly before reinstallation.