Replacement Of Source Lamp Assembly - Teledyne 514 Instruction Manual

4. A total of six spare screens are furnished with the analyzer
system. As shown in Figure 5-1, the screens are placed under the
filters. Re-screen, as required, then reassemble filter wheel and
install by reversing the removal/disassembly procedure. Make
sure to reassemble any balance weights or, if balancing facilities
are available, re-balance filter wheel if re-screening has resulted
in a weight shift.
5. It is extremely important that the filters are not
interchanged. The measuring filter is located adjacent to the
white arc on the filter wheel. If the filters are interchanged, meter
readings will be reversed, i. e., the meter will indicate downscale
values instead of upscale.
5.3

Replacement of Source Lamp Assembly

The replacement source lamp assembly is installed in place with the
evacuation seal oriented toward the right side of the module, i. e., away from
the lens. Make lamp electrical connections to terminals TS1-3 and TS1-4
(green leads).
After replacement, it may be necessary to adjust the lens associated with
the source lamp. Two screws secure the lens mount by means of slotted
mounting holes, permitting horizontal and vertical adjustment of the lens.
Likewise, the screw securing the source lamp mount can be loosened,
allowing movement of the lamp for adjustment purposes. After adjustment,
re-tighten all mounting screws. Make adjustments as follows:
1. Disconnect power originating in the power module (line voltage
regulating transformer) by removing the leads from TS1-1 and
TS1-2 in the source module.
2. Connect lamp transformer primary terminals (black, black-red
leads) to a source of adjustable AC (Variac, Powerstat, etc.).
3. Energize the source lamp sufficiently to make the optical
adjustment; however, do not make source lamp illumination so
excessive that brightness can harm the eyes or make the mount
too hot to handle.
4. Move the lamp until the light can be seen centered in the optical
tube separating the source and sample modules.
Teledyne Analytical Instruments
A Business Unit of Teledyne Electronic Technologies
Maintenance & Troubleshooting 5.0
5–3