Part II: Maintenance/Analysis Unit Maintenance 5

Part II: 5-1

Teledyne Analytical Instruments
Maintenance

5.0 Routine Maintenance

5.1 Automatic operation and routine operational duties
The system operates continuously without adjustment. Under normal condi-
tions, after you program the system for automatic operation, only routine maintenance
procedures are necessary. The most common failure condition is a temporary
interruption of the power serving the instrument. If the power service is interrupted, the
source lamp in the analyzer will restart automatically as long as there is no defect in the
lamp circuit or its starter.
You can detect a lamp off condition with the signal failure alarm circuit, but you
must connect the relay contacts from the alarm to your indicating device. In addition,
you will experience an alarm condition when the cell windows are extremely dirty or the
electronics fail in the detector-converter, log amplifier, or inverter circuits. When the
alarm circuit is powered independently from the analyzer power source, the alarm
circuit is fail-safe and will detect power failure.
A message such as "Cell Fail check the detector signal" might be displayed
if a 1amp off condition occurs
5.2 System Visual Check and Response Procedure
1. Verify that the signal failure alarm is not in failure condition.
2. Verify that the zero and span control setting have not been
disturbed.