AirSep MN105-1 C - Manual (Page 39)

AirSep ® Corporation
NewLife ® Elite Service Manual
2 Make sure all filters are clean.
3 Turn flowmeter completely open, up to the highest setting.
The ball should rest at 5.5 lpm. If setting is not 5.5 lpm, adjust
regulator so that the ball is set at 5.5 lpm with the flowmeter
completely open.
4 Make sure the unit is cycling properly by following the green
valve lights on the circuit board. The lights should follow
the label below the circuit board and two lights should be
activated at all times. If the unit is not cycling properly, refer
to troubleshooting chart.
5 If concentrator is not meeting specifications, make sure that
the unit is leak free by testing all tubing connections and
fittings with leak testing solution. Protect circuit board from
solution and start leak test at the heat exchanger, following
air flow of unit to oxygen outlet. Repair all leaks by tightening
connections and fittings.
6 Set the concentrator at 5 lpm and connect pressure test gauge
to unit. Determine pressure parameters by observing high
and low pressure points on the gauge. If pressures are high
or low, refer to Section 6.1.
7 Review troubleshooting chart to isolate and repair any other
malfunctions.
6-3