Thermo Scientific 42i Instruction Manual page 187

Servicing
Safety Precautions
If the equipment is operated in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
▲
CAUTION Carefully observe the instructions in each procedure. Avoid
contact with converter heated components. ▲
Allow converter to cool to room temperature before handling converter
components. ▲
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly ground 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. ▲
Handle all printed circuit boards by the edges. ▲
Do not point the photomultiplier tube at a light source. This can
permanently damage the tube. ▲
Do not remove the LCD panel or frame from the LCD module. ▲
The LCD polarizing plate is very fragile, handle it carefully. ▲
Do not wipe the LCD polarizing plate with a dry cloth, it may easily
scratch the plate. ▲
Do not use alcohol, acetone, MEK or other Ketone based or aromatic
solvents to clean the LCD module, use a soft cloth moistened with a
naphtha cleaning solvent. ▲
Do not place the LCD module near organic solvents or corrosive gases. ▲
Do not shake or jolt the LCD module.
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Thermo Fisher Scientific Model 42i Instruction Manual 7-3