Thermo Scientific 5030i SHARP, Instruction Manual

Page: 253 / 403

Servicing
Detector Assembly Replacement
Thermo Fisher Scientific Model 5030 i SHARP Instruction Manual 7-35
WARNING The detector assembly should be replaced by a qualified
technician knowledgeable in dealing with radiation precautions. By
removing the detector assembly, the C-14 radioactive source is partially
exposed. Safety glassed must be worn during this replacement procedure.
The amount of C-14 meets the USNRC regulations as an exempt amount
of radioactive source <100 Ci.
▲
The service procedures in this manual are restricted to qualified
representatives.
▲
If the equipment is operated in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
▲
CAUTION The detector window is very fragile. Handle with great care and
do not wipe or touch the window. Furthermore, do not touch the solder
cable connection (electrode) with your bare fingers. The oils from your skin
can damage the detector.
▲
Safety glasses must be worn while replacing the detector assembly. ▲
Equipment Damage
Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap
must be worn while handling any internal component.
▲
1. Turn the instrument OFF, unplug the power cord, and remove the
cover.
2. Disconnect the SHV connector from the detector amplifier assembly
and slide throught the wall plate.
3. Loosen both detector mounting screws and slowly lift the detector
assembly.
4. Install the new detector assembly by following the previous steps in
reverse, while taking special care not to puncture the mylar.
5. Calibrate the detector assembly. Refer to the “ Detector Calibration ”
procedure on page 4-12 .