Environnement AF22e, Technical Manual, Page: 103 / 118

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AF22e
Environnement
S.A
APRIL 2016
5–5
Alarm message
(Min./Max. values)
Possible cause(s) Possible corrective action(s)
No gas pressure
Min. value: not present
Max. value: present
– Gas pressure sensor cable is
disconnected.
– Connect gas pressure sensor cable.
Gas pressure
Min. value: 800 hPa
Max. value: 1200 hPa
–
If gas pressure is abnormally low:
•
Either sample, zero or span inlet
ports are closed,
•
Or dust filter is clogged or dirty,
•
Or solenoid valve block is
clogged or dirty,
•
Or gas pressure sensor is faulty.
– If chamber pressure is abnormally
high:
•
Either the analyzer’s inlet port(s)
gas flow is too high and the
excess vent is not connected.
•
Or pressure sensor is faulty.
•
Open sample, zero or span inlet
analyzer ports.
•
Check dust filter and replace if
necessary.
•
Check if the sampling line is dirty
or kinked.
•
Check solenoid valve block
status: clean with dry, oil-free,
compressed air or replace
if cleaning is not possible.
•
Replace gas pressure sensor.
•
Check if the excess vent is
connected.
•
Replace pressure sensor.
Pump pressure
Min. value: 100 hPa
Max. value: 600 hPa
– If pump pressure is abnormally low:
•
Either sample, zero or span inlet
ports are closed,
•
Or dust filter is dirty or clogged,
•
Or solenoid valve block is
clogged or dirty,
•
Or pump pressure sensor is
faulty.
•
Open sample, zero or span inlet
analyzer ports.
•
Check dust filter and replace if
necessary.
•
Check if the sampling line is dirty
or kinked.
•
Check solenoid valve block
status: clean with dry, oil-free,
compressed air or replace it
if cleaning is not possible.
•
Replace pump pressure sensor.