K3.1.141e Manual NitroFlow HP_EN.doc
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8 Troubleshooting
8.1 Troubleshooting
list
In case of trouble always start with calibrating the O
2
sensor (refer to §9.5).
Trouble Possible
cause Possible
solution
Compressed air supply too
low
Check / increase the air supply
Leak in piping (external or
internal)
Check for leaks in external and
internal piping.
Compressed air temperature
is too high
Lower the temperature, if possible
Air filters are polluted
Change or clean the air filters
Automatic drain is
continuously open
Check the automatic drain.
Refer to §9.3 and §9.2.
Flow control valve (FCV1) is
set incorrect
Adjust valve FCV1 to correct setting.
Sample flow to O
2
sensor is
too low
Check / readjust the sample flow to
the O
2
sensor. Refer to §9.5.
Nitrogen outlet line is
restricted
Check / open the outlet line
Delivery (flow)
of nitrogen too
low
Faulty module set(s)
Check / replace module set(s)
NitroFlow
®
HP is switched off Switch on the NitroFlow
®
HP
Check fuses
Check mains switch
No power
Check voltage power supply
No compressed air available Check compressed air supply
Loose tubing (internal or
external)
Check / restore tubing and piping
Nitrogen outlet line is blocked. Check / open the outlet line
Check / reduce inlet temperature
Replace temperature sensor
NitroFlow
®
HP is in alarm
Check / reduce inlet pressure
(absolute maximum is 15 bar(g))
Solenoid valve failed
Check / replace solenoid valve
No nitrogen
delivery
Flow control valve (FCV1) is
closed completely
Check / readjust valve FCV1
