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M100EU – OPERATIONS MANUAL TELEDYNE INSTRUMENTS
Addendum to M100E Manual - P/N 04145 TROUBLESHOOTING & REPAIR
11. TROUBLESHOOTING & REPAIR
This section includes various troubleshooting and repair information that is either in addition to that included in
Chapter 11 of the M100E Manual (P/N 04145)
CAUTION
THE OPERATIONS OUTLINED IN THIS CHAPTER MUST BE PERFORMED BY QUALIFIED
MAINTENANCE PERSONNEL ONLY.
PLEASE READ CHAPTER 11 OF THE M100E MANUAL (P/N 04145) BEFORE
ATTEMPTING THE FOLLOWING TROUBLE SHOOTING OR REPAIR PROCEDURES
CAUTION
RISK OF ELECTRICAL SHOCK. SOME OPERATIONS NEED TO BE CARRIED OUT WITH
THE ANALYZER OPEN AND RUNNING.
EXERCISE CAUTION TO AVOID ELECTRICAL SHOCKS AND ELECTROSTATIC OR
MECHANICAL DAMAGE TO THE ANALYZER.
DO NOT DROP TOOLS INTO THE ANALYZER OR LEAVE THOSE AFTER YOUR
PROCEDURES.
DO NOT SHORTEN OR TOUCH ELECTRIC CONNECTIONS WITH METALLIC TOOLS
WHILE OPERATING INSIDE THE ANALYZER.
USE COMMON SENSE WHEN OPERATING INSIDE A RUNNING ANALYZER.
11.1.1 FAULT DIAGNOSIS WITH WARNING MESSAGES
The warning messages for the M100EU are identical to those included in Section 11.1.1 of the M100E Manual
(P/N 04145)
11.1.2 FAULT DIAGNOSIS WITH TEST FUNCTIONS
The following table supersedes Table 11.2 of the M100E Manual - P/N 04145.
Table 11-1: Test Functions - Possible Causes for Out-Of-Range Values
TEST
FUNCTION
NOMINAL
VALUE(S)
POSSIBLE CAUSE(S)
STABIL
(STANDARD)
0.075 ppb with zero
air
F
aults that cause high stability
values are: pneumatic leak; low or very unstable UV lamp
output; light leak; faulty HVPS; defective preamp board; aging PMT; PMT recently exposed to
room light; dirty/contaminated reaction cell.
STABIL2
(EPA DEF)
0.075 ppb with zero
air
Same as STABIL
SAMPLE FL
650 cm
3
/min
± 10%
Faults can be caused by: clogged critical flow orifice; pneumatic leak; faulty flow sensor;
sample line flow restriction.
PMT
-20 TO 150 mV with
ze
ro air
High or noisy readings could be due to: calibration error; pneumatic leak; light leak (improper
assemb
ly); aging UV filter; low UV reference output; PMT recently exposed to room light; light
leak in reaction cell; reaction cell contaminated; HVPS problem.
It takes 24-48 hours for a PMT exposed to ambient light levels to return to normal functioning.
(table continued)
05944 Rev B 27
DCN 5063 PRINTED DOCUMENTS ARE UNCONTROLLED