Table 8-2: Test Functions - Indicated Failures - Teledyne T360 Operation Manual

Teledyne API Model T360/T360M Operation Manual

Table 8-2: Test Functions - Indicated Failures

TEST
FUNCTIONS
Time of day clock is too fast or slow: To adjust See Section 4.10.
TIME
Battery in clock chip on CPU board may be dead.
Incorrectly configured measurement range(s) could cause response problems with a Data logger or chart
recorder attached to one of the analog outputs.
RANGE
 If the Range selected is too small, the recording device will over range.
 If the Range is too big, the device will show minimal or no apparent change in readings.
Indicates noise level of instrument or CO
STABIL
If the value displayed is too high the IR Source has become brighter:

o Adjust the variable gain potentiometer on the sync/demod board
 If the value displayed is too low or constantly changing and the CO
o Failed multiplexer on the motherboard
o Failed sync/demod board
o Loose connector or wiring on sync/demod board
CO2 MEAS
Flow of purge gas to the GFC wheel housing may have stopped
&
 If the value displayed is too low or constantly changing and the CO
CO2 REF
o GFC wheel stopped or rotation is too slow
o Failed sync/demod board IR source
o Failed IR source
o Failed relay board
o Failed
o Failed IR photo-detector
 When the analyzer is sampling zero air and the ratio is too low:
o The reference cell of the GFC wheel is contaminated or leaking.
o The alignment between the GFC wheel and the segment sensor, the M/R sensor or both is
incorrect.
MR RATIO o Failed sync/demod board
o Flow of purge gas to the GFC wheel housing may have stopped
 When the analyzer is sampling zero air and the ratio is too high:
o Zero air is contaminated
o Failed IR photo-detector
See Table 8-1 for SAMPLE PRES WARN
PRES
Check for gas flow problems. see Section 8.2
SAMPLE FL
SAMPLE TEMP should be close to BENCH TEMP. Temperatures outside of the specified range or
SAMPLE
oscillating temperatures are cause for concern
TEMP
Bench temp control improves instrument noise, stability and drift. Temperatures outside of the specified
BENCH TEMP
range or oscillating temperatures are cause for concern. See Table 8-1 for BENCH TEMP WARNING
Wheel temp control improves instrument noise, stability and drift. Outside of set point or oscillating
WHEEL TEMP
temperatures are cause for concern. See Table 8-1 for WHEEL TEMP WARNING
If the box temperature is out of range, check fan in the power supply module. Areas to the side and rear
BOX TEMP
of instrument should allow adequate ventilation. See Table 8-1 for BOX TEMP WARNING.
If this drive voltage is out of range it may indicate one of several problems:
 A poor mechanical connection between the various components in inside the detector housing
PHT DRIVE  An electronic failure of the IR Photo-Detector's built-in cooling circuitry, or;
A temperature problem inside the analyzer chassis. In this case other temperature warnings would

also be active such as BENCH TEMP WARNING or BOX TEMP WARNING.
07272B DCN6552
2
I C
bus
INDICATED FAILURE(S)
concentration of sample gas (see Section 8.4.2 for causes).
2
Troubleshooting and Service
REF is OK:
2
REF is BAD:
2
229