AirSep MN105-1 C - Manual (Page 38)

AirSep ® Corporation
NewLife ® Elite Service Manual
 An improperly operating circuit board or solenoid valve.
Confirm that the circuit board and solenoid valves function
properly.
 Contaminated sieve beds.
Change the sieve beds.
6.1.2 Low Operating Pressure
Lower than normal operating pressure may indicate any of the
following:
 A restriction in the suction resonator or optional air intake
filter, which limits the amount of room air available to the
compressor.
Disconnect the braided suction tube at the compressor, and
allow the unit to operate without the suction resonator to see if
normal operating pressure returns.
 An improperly operating circuit board or solenoid valve.
Confirm that the circuit board and solenoid valves function
properly.
 A leak in the unit, which allows system pressure to escape.
Leak test the unit.
 A compressor with reduced output.
Ensure that the oxygen concentration level at the desired
liter flow is within AirSep’s specifications. If it is below
specifications, replace or repair the compressor.
 An obstructed or vertically positioned (ECOnomy mode)
EcoCheck valve.
For the EcoCheck valve (available only as an option for units
equipped with an oxygen monitor): confirm that the EcoCheck
valve is not obstructed or in the ECOnomy mode.
6.2 General Troubleshooting
Before reviewing the troubleshooting chart, the following steps may be useful
to isolate any malfunctions:
1 Turn the concentrator on. If unit does not turn on, refer to
troubleshooting chart.
6-2