Teledyne 501 TRS, Operation Manual, Page: 72 / 111

TROUBLESHOOTING and REPAIR Teledyne API - T102/501 TRS, Addendum to T101 Operation Manual
70
10. If TRS

SO
2
converter efficiency is below 90% check for one of the
following possible causes:
•
Pneumatic leak
• Perform a leak check (with the M501-TRS connected) as
described in the Detailed Pressure Leak Check section in the
T101 Manual - PN 07266.
•
Plugged or constricted pneumatic flow
• Perform a sample flow check as described in the Performing a
Sample Flow Check section in the T101 Manual - PN 07266. This
tests the entire system
•
Disconnect the gas feed line from the FROM ANALYZER port of
the M501-TRS. Attach the flow meter to the port and repeat the
test. Isolates the portions of the pneumatic system down stream
from the TRS

SO
2
switching valve but includes the M501-TRS
in the flow test.
•
Attach the flow meter to the FROM CONVERTER port at the
back of the T102. Retest. This bypasses M501-TRS during the
flow test.
•
Improper Set point temperature
•
Call Teledyne API’s Technical Support for advice.
• Incorrect/wrong concentration Span Gas used in efficiency
test
•
Independently verify the concentration of the span gas.
•
Contaminants in the converter chamber, pneumatic lines
•
Sometimes contaminants such as tiny particles of scrubber
material from the M501-TRS’ SO
2
scrubber can get into the
converter tube and react with the TRS

SO
2
conversion
process. This can occur if the filter material inside the scrubber
lets any particulates through.
•
Call TAPI Technical Support for instructions on cleaning the
converter tube and M501-TRS pneumatic lines.
11.5.
Additional Repair Procedures
The following repair procedures are in addition to those listed in the Repair Procedures
section in the T101 Manual - PN 07266,
07267B DCN6485