TGRADIENT Manual __________________________________________________________ 30
12 Trouble shooting
12.1 Slow heating and cooling
The TG
RADIENT is equipped with a strong ventilator for the cooling of the heat sink. The inlet of
this fan is located at the bottom side of the instrument. Be sure that the inlet is not clogged by
dust or other material (e.g. a sheet of paper placed under the cycler can be attached to the inlet as
the fan is in operation). Dirt can be removed easily from the inlet with a conventional vacuum
cleaner.
12.2 Restart due to unrecognized power failure
High voltage fluctuation can lead to an automatic restart of the thermocycler. In this case the
cycler restarts at the step where there power failure has occurred. To avoid voltage fluctuation,
do not connect the cycler to a socket shared by a strong power consumer like a refrigerator or a
centrifuge.
12.3 Adaptation of protocols from other cyclers
Since the TG
RADIENT is an extremely fast thermocycler it may be necessary to reduce the
heating and cooling ramps to run protocols from other cyclers. For the setting of the heating and
cooling ramps see section 6.3. Alternatively, the time settings may be extended.
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