K3.1.142e Manual NitroFlow Lab  - 42 - 
8 Troubleshooting 
8.1 Error list 
Error  Possible cause  Possible solution 
Main switch is off  Switch main ON and push 
power switch ON. 
No start and 
no display 
No power to supply outlet  Check electrical panel circuit 
breaker. 
Ambient temperature is too 
high 
Lower the temperature, if 
possible 
Check whether the minimum 
clearance between the 
NitroFlow
®
 Lab and the walls 
is large enough. 
Inlet carbon adsorber filter is 
polluted 
Replace the inlet filter 
NitroFlow
®
 Lab is switched 
off 
Switch on the NitroFlow
®
 Lab 
Leak in piping  Check for leaks in the piping. 
Nitrogen outlet line is 
blocked. 
Check/open the outlet line 
Delivery of 
nitrogen too 
low or absent 
Temperature is too high 
A.3. 
 
• Ambient temperature is too 
high (over 35°C/ 95°F). 
• In-/outlet gratings are 
clogged. 
• Cooling fans are not or 
insufficiently functioning. 
• Compressors are 
overloaded. 
Pressure in nitrogen storage 
vessel over 8 bar(g) because 
of erroneous setting of 
pressure switch 
Reset pressure switch levels 
Residual 
oxygen 
content too 
high  
 
Ambient temperature lower 
than normal 
Increase temperature or 
readjust purity (refer to §7.3)