Thermo Scientific 5028i Instruction Manual page 187

Servicing
Safety Precautions
Safety Precautions
Read the safety precautions before beginning any procedures in this
chapter.
WARNING The service procedures in this manual are restricted to
qualified service 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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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.
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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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Safety glasses must be worn while replacing the detector assembly.
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If the LCD panel breaks, do not let the liquid crystal contact your skin
or clothes. If the liquid crystal contacts your skin or clothes, wash it off
immediately using soap and water.
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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 (Figure
7–1). If an antistatic wrist strap is not available, be sure to touch the
instrument chassis before touching any internal components. When the
instrument is unplugged, the chassis is not at earth ground.
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Do not remove the LCD panel or frame from the LCD module.
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The LCD polarizing plate is very fragile, handle it carefully.
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Do not wipe the LCD polarizing plate with a dry cloth, as it may easily
scratch the plate.
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Do not use alcohol, acetone, MEK or other Ketone based or aromatic
solvents to clean the LCD module, but rather use a soft cloth moistened
with a naphtha cleaning solvent.
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Thermo Fisher Scientific Model 5028i Instruction Manual 7-3