Testing The Safety Features - Thermo Scientific ADVANCED Series Quick Start Manuals

Section 6 Preventive Maintenance
Grounding Strap
Sahara baths 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
DANGER
tank top when the circulator is reinstalled.

Testing the Safety
The safety features for high temperature protection and low liquid level
protection must be checked at regular intervals. The frequency depends on
Features
the circulator's designated application and the heat transfer fluid used.
High temperature protection
Use a flat head screwdriver to turn the arrow to the desired temperature.
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 . If Auto
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.
Limit all acrylic bath's maximum high temperature setting to the
CAUTION
temperature indicated on the label on the front of the bath, 80°C.

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 7 for
details on error messages.
If not, have the circulator checked by a qualified technician.
6-2 Thermo Scientific