Teledyne Model 300EU manual M300EU, Test Functions - Indicated Failures, Rev A1

M300EU	TROUBLESHOOTING & REPAIR
(Addendum to M300EU Manual - P/N 04145)
Table 11-2:	Test Functions - Indicated Failures

TEST

FUNCTIONS

(As Displayed)

PHT DRIVE

SLOPE

OFFSET

INDICATED FAILURE(S)

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

-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 OVEN TEMP WARNING, BENCH TEMP WARNING or BOX TEMP WARNING.

Values outside range indicate

Contamination of the zero air or span gas supply Instrument is Miscalibrated

Blocked gas flow

Contaminated or leaking GFC wheel (either chamber) Faulty IR photo-detector

Faulty sample faulty IR photo-detector pressure sensor (P1) or circuitry Invalid M/R ratio (see above)

Bad/incorrect span gas concentration due. Values outside range indicate Contamination of the zero air supply Contaminated or leaking GFC wheel (either chamber) Faulty IR photo-detector

05514 Rev A1 63