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Grounding Strap
Testing the Safety
Features
Thermo Scientific
Sahara baths, and stand-alone circulators, require immersion circulator
grounding.
and Nut
If the circulator is removed for any reason you must ensure the nut
and washer secures to the grounding strap located on the rear of the
tank top when the circulator is reinstalled.
The safety features for high temperature protection and low liquid level
protection must be checked at regular intervals. The frequency depends on
the circulator's designated application and the heat transfer fluid used.
High temperature protection
Using a small diameter (less than 1/8") plastic/metal rod, turn the arrow
the desired temperature.
Note
If using plastic rod ensure the fluid temperature is low enough to
prevent possibly melting the plastic.
Set a cut-off temperature that is lower than the desired setpoint temperature.
Switch on the circulator and ensure it shuts down at the set cut-off
temperature.
After the circulator cools down clear the HTC error message by pressing
the black ring surrounding the red dial - and then press
Restart is enabled the circulator restarts, if disabled use the Start Up
procedure.
If the circulator did not shut down have it checked by a qualified
technician.
Reset the safety to the desired temperature.
Low liquid level protection
With the circulator on, use a screwdriver and slowly push down on each
level sensor, one at a time, until an error message appears. See Section 6 for
details on error messages.
If not, have the circulator checked by a qualified technician.
Section 5 Preventive Maintenance
to
. If Auto
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