K3.1.142e Manual NitroFlow Lab  - 48 - 
in small increments and wait for the resulting change before 
readjusting. 
 
Tip: 
In the absence of a flowmeter one can determine the flow by 
adjusting it such that it is barely felt when you hold the outlet 
of the tube close to a wet finger tip; excessive flow must be 
prevented 
6.  Then enter again the maintenance menu 
, screen 3/5 wait until 
the oxygen level has stabilized. 
7.  Then go to screen 5/5 and touch O2 20.9% button. The system will 
ask for confirmation.  Select YES. 
 
8.  Reconnect the tube (F) and the sensor cap (E) with the sensor (C). 
9.5 Replace compressor 
1.  Switch off the NitroFlow
® 
Lab. 
2.  Let the system depressurize. 
3.  Remove both left and right-side cover from the NitroFlow
®
 Lab by 
taking the 2 screws from each side. (Fig.9-9) 
4.  Then remove the second cover from each side(Fig. 9-10). 
5.  Use a 19mm open-end wrench to undo all bull nose connections to the 
compressor. (Fig. 9-11).