Service Manual
Integra E-Z Oxygen Concentrators
Chart SeQual Technologies Inc. Page 17 of 34 P/N 2917
5.1.5.3.Unit out of calibration- perform concentration check.
5.1.5.4.Unit overheating- efficiency of the adsorption process is reduced if cabinet temperatures are
elevated. Ensure adequate ventilation (refer to the Operation and Set-up section)
5.1.5.5.Compressor worn - check compressor output.
5.1.5.6.ATF worn – check unit with another equivalent ATF.
5.1.6. OM Models - Red LED Flashing, Steady alarm. Concentration below 70%
5.1.6.1.Push the On/Off switch to silence alarm. Attempt restart and check for the same conditions as
outlined above (flow setting, filter clog, etc).
5.1.6.2.Check the unit interior for loose or disconnected oxygen tubing.
5.1.6.3.Disconnect external attachments and run Integra. Check for fluctuations (+1 LPM). If
fluctuations present, contact SeQual Customer Service.
NOTE:
On initial start-up, a timing circuit in the printed circuit board prevents the
alarm from sounding while the unit stabilizes. The alarm will not sound
until this 10 minute warm-up time delay is complete. During this time an
intermittent beep will sound alerting the user that the Integra E-Z is
warming up.
5.2. Unit fails to start
NOTE:
All Integra E-Z models contain a power management feature that will
automatically restart a unit that experiences a power interruption. If the
power interruption was very short and the unit was not turned off or the
unit was turned off and on quickly - there will be a delay in starting. The
Yellow Indicator light will be on and an intermittent beeping sound will be
heard. Wait 20 seconds. Unit will start automatically.
5.2.1. If unit doesn’t start, first check if Flow Indicator (LCD Display) backlight is turned on (in
bright daylight this may be a little difficult to detect so cup your hand around the display area to
determine if this light is on). If it is off follow next steps.
5.2.2. Check that unit is plugged in.
5.2.3. Check that the unit is not plugged into an outlet controlled by a wall switch that is off.
5.2.4. Check that the fuse or circuit breaker controlling the outlet is intact/on.
5.2.5. Check the main fuse on the circuit board is not blown. Replace this fuse if it is blown.
5.2.6. Check the compressor capacitor is not shorted or blown. Replace if needed.
5.3. Unit tries to start but shuts down alarming
NOTE:
A unit which has been exposed to temperatures below 50ºF for an extended
time may have cold-soaked the compressor piston sleeves, causing the
sleeves to contract. This will be indicated by a squealing sound or failure of
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