AirSep MN155-1 - Manual (Page 10)

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1.7 Fit the new flowmeter into the desired slot. Assemble bracket and pal nut on the
flowmeter to secure the assembly to the cabinet housing.
Figure 7
1.8 Connect the 1-¼ inch tube from the flowmeter (inlet) to the barb on the tubing
assembly. Next, connect the 8.5” tube to the top of the flowmeter (outlet) and tie wrap
all connection points.
Figure 8
1.9 Leak Testing
After any servicing is complete, the SureFlow should be checked for leaks,
Attach to oxygen source and using soapy water or a leak test solution, check
all tubing connections before closing.
Another aid in determining the source of a leak(s) is to put your thumb over
each outlet at the SureFlow station, on at a time. The flowmeter ball must drop
to zero on each test, indicating no leak within the SureFlow.
1.10 Replace the back cover after leak testing, and use three screws to complete the
flowmeter replacement.