Emerson X-STREAM XE - Page 385

Emerson Process Management GmbH & Co. OHG 8-15
X-STREAM XE
Instruction Manual
HASXEE-IM-HS
10/2012
8
Troubleshooting
8.3 Solving Problems Not Indicated by Status Messages
Situation Description Recommended Actions
External Valves Not
Working Properly
Valves connected to digital
outputs
See "Digital outputs not wor-
king properly"
Valves not connected to digital
outputs
Check external valve control-
ler
Serial Communication Not
Working Properly
External failure
Check external circuitry for
failures
Connection failure
• XPSA: If red LED "TI-
MEOUT" glows - check con-
nection to P33
• Check installation of inter-
face module (SIF 232 or 485)
Fluctuating or Invalid
Readout
Leak in gas path Perform a leak test
Ambient air contains high
concentration of measured
gas component
• Check absorber (at chopper/
measuring cell) and replace
if need be.
• Purge instrument with inert
(neither absorbing, nor inter-
fering) gas
Fluctuating gas pressure
• Check gas path before and
behind cell and sensor
• Remove restriction behind
gas outlet
• Reduce gas ow or pump
rate
Sensor or detector not con-
nected
Check detectors connections
Electrochemical Oxygen sen-
sor worn-out
Check sensor and replace if
need be
IR channel:
Source not connected or de-
fective
• Check connections:
X3 (1/2) / source channel 1
X3 (4/5) / source channel 2
• If source housing is cold:
Exchange all sources in
case of multi-channel analy-
zer / replace source if need
be (see service manual)