SERVO
PRO NANOCHROME Gas Analyser
120
04416001A / Revision 7
Cause #
Cause Description
Solution
1
Carrier purifier not working
1
2
Carrier gas grade not suitable
2
3
No carrier purifier
3
4
Polluted carrier gas
4
5
Too short vent pipe
5
6
Plasma off
6
7
Span calibration gas connected to smp 1 inlet
7
8
Wrong span calibration gas pressure
8
9
Carrier flow not reaching set point
9
10
Moisture in span or process
10
11
Unstable carrier flow
9,11,12
12
Unstable sample flow
13,14
13
Peak slightly outside integration window
15
14
Span bottle almost empty (<10% content)
16
15
Unstable ambient conditions (pressure/temperature)
17
16
Span gas mixture
18
17
Wrong span gas background mixture
19
19
Damaged detector
20
20
Verify for presence of dead volume.
21
21
Leak on carrier gas line
4
22
Incorrect column temperature
22
23
Incorrect valve timing or valve not actuating.
23
24
Column require regeneration
24
25
Packed column properties slighly changed during shipping or over time.
25
26
Calibrated restrictor slighly changed during shipping.
25
27
Process gas contamination
26
28
Carrier gas supply pressure too high
27
29
Dilution ratio changed
28
Table 32 : Troubleshooting Typical Issues
–
Likely Causes