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Section 4 Operation
High Temperature
Cutout
°C
HTC (Temperature range
varies with type of
immersion circulator.)
4-26
To protect your application, the adjustable High Temperature Cutout
(HTC) ensures the heater does not exceed temperatures that can cause
serious damage. A temperature sensor is located in the reservoir. A
HTC fault occurs when the temperature of the sensor exceeds the set
temperature limit.
In the event of a fault the circulator shuts down and displays a fault
message, see Section 6. The cause of the fault must be identified and
corrected before the circulator can be restarted. A low reservoir fluid
level is a primary reason for the HTC to trip.
The HTC is factory preset fully clockwise to the highest possible
setting. To set the cutout start the circulator and adjust the setpoint
a few degrees higher than the highest desired fluid temperature.
Allow the circulator to stabilize at the temperature setpoint. Using
a small diameter (less than 1/8") plastic/metal rod, turn the arrow
counterclockwise until the circulator shuts down and the fault message
appears.
Press
to clear the message.
Note
If using plastic rod ensure the fluid temperature is low enough
to prevent possibly melting the plastic.
Before you can restart the circulator it has to cool down a few degrees.
To restart the circulator press the black reset ring surrounding the
red dial - and then press
circulator restarts, if disabled use the Start Up procedure.
Note: We recommend periodically rechecking operation or if the
circulator is moved.
again. If Auto Restart is enabled the
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