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Part III: 1-45
Oil in Water Part III
Teledyne Analytical Instruments
7.10 Lamp Replacement
After 1 year operation the lamp may be in need of replacement. The
procedure does not require critical alignment of the optical bench; only an
oscilloscope check on the front end amplifiers is recommended after replace-
ment.
PROCEDURE
1. Turn power off to the control unit.
2. Open the source module.
3. Replace the old lamp.
4. Reassemble components in reverse .
5. Check the oscilloscope test points as described under Section 5.5.4.
NOTE: Observe eye protection warning as described under Section
3.1.1, final text.
7.11 Phototube Replacement
The phototube has a very long life and is only in need for replacement when
a leak has developed in its quartz envelope, the base or around the connector on
top of the tube, which is almost always caused by rough handling or mechanical
shock.
1. Turn power off to the control unit.
2. Open the detector module.
3. Remove the signal cable.
4. Remove the phototube shield.
5. Replace the phototube.
6. Reassemble the components in reverse order.
7. Check the oscilloscope test point as described under Section 5.5.4.