iv
Explanation of Symbols
CAUTION: Risk of Danger!
Wherever this symbol appears, always consult note
in this manual for further information before proceeding. This symbol identifies
components that pose a risk of personal injury or damage to the instrument if
improperly handled.
CAUTION: Risk of Electrical Shock!
This symbol identifies components that
pose a risk of electrical shock if improperly handled.
CAUTION: Hot Surface!
This symbol identifies components that pose a risk of
personal injury due to excessive heat if improperly handled.
Safety Warnings and Guidelines
Warning:
When removing an Alpha unit from a DNA Engine Tetrad 2 base, keep
all fingers and foreign objects away from the Alpha unit bays. Keep all
objects clear of the Alpha unit bays until the fan has come to rest.
Warning:
Operating the DNA Engine Tetrad 2 cycler before reading this manual
can constitute a personal injury hazard. Only qualified laboratory per-
sonnel trained in the safe use of electrical equipment should operate
these machines.
Warning:
Do not open or attempt to repair the DNA Engine Tetrad 2 cycler, any
Alpha unit, or any accessory to the cycler. Doing so will void your war-
ranties and can put you at risk for electrical shock. Return the
DNA Engine Tetrad 2 cycler to the factory (US customers) or an author-
ized distributor (all other customers) if repairs are needed.
Warning:
All Alpha unit blocks can become hot enough during the course of
normal operation to cause burns or cause liquids to boil explosively.
Wear safety goggles or other eye protection at all times during operation.
Warning:
The DNA Engine Tetrad 2 cycler incorporates neutral fusing, which
means that live power may still be available inside the machine even
when a fuse has blown or been removed. Never open the
DNA Engine Tetrad 2 base; you could receive a serious electrical shock.
Opening the base will also void your warranty.
Caution:
Never remove an Alpha unit from the DNA Engine Tetrad 2 cycler with
the power turned on and a program running. Doing so can cause elec-
trical arcing that can melt the contacts in the connector joining the
Alpha unit to the cycler.
Caution:
Do not attempt to unpack or move the DNA Engine Tetrad 2 cycler
alone. Doing so could results in personal injury. Always enlist the help of
another individual when moving or lifting the DNA Engine Tetrad 2 cycler.
