Figure 7-15. Replacing The Proportional Valve - Thermo Scientific 5028i Instruction Manual

Servicing
Detector Assembly Replacement
Detector Assembly
Replacement
7-28 Model 5028i Instruction Manual
Figure 7–15. Replacing the Proportional Valve
Use the following procedure to replace the detector assembly
7–16).
Equipment Required:
Detector assembly
Hex driver, 4 mm
Safety glasses
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 µCi.
The service procedures in this manual are restricted to qualified
representatives.
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If the equipment is operated in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
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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.
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(Figure