Huber tango - Setting OT Expansion Vessel; Setting Process Safety; Monitoring Via Display OT Values; Testing Overtemperature Protection for Functionality

Setup mode
OPERATION MANUAL Chapter 4
Unistat® V2.0.0en/09.06.16//15.09
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4.1.2.3 Setting “OT expansion vessel”
PROCEDURE
 Go to the “Categories Menu”.
 Tap on the category “Safety”.
 Tap on the category “Overtemperature”.
 Read the safety warning and confirm by tapping on “OK”.
 Read the Note and confirm by tapping on “OK”.
 Tap on the dialog entry “OT limit: Expansion vessel”.
 Confirm your choice by tapping on “OK”.
 Tap on the temperature format set by you in the controller (green text).
 Enter the displayed red safety code using the numeric keypad that appears.
 Enter the value for the “Exp. vessel OT value” using the number keypad that appears.
 Confirm your entry by tapping on “OK”.
4.1.2.4 Setting “Process Safety”
You have two options.
“Stop” in accordance with DIN EN 61010
Once the overtemperature protection cut-out value is reached, the temperature control unit (heat-
ing, cooling circuit and circulation pump) switches off (default setting).
“Process Safety”
Once the overtemperature protection cut-out value is reached, the heater switches off and the
cooling circuit and circulation pump continue to operate. In case of an emergency (possible exo-
thermic reaction), the full cooling capacity is thus available. Please make sure that the automated
compressor is set to Permanently ON ([System Settings] > [Power/ECO Settings] > [Compressor
ON/OFF/AUTO] > [Permanently ON]).
PROCEDURE
 Go to the “Categories Menu”.
 Tap on the category “Safety”.
 Tap on the category “Process Safety”.
 Read the safety warning and confirm by tapping on “OK”.
 Choose between the modes “Stop” and “process safety”.
 Confirm your choice by tapping on “OK”.
4.1.2.5 Monitoring via “Display OT values”
PROCEDURE
 Go to the “Categories Menu”.
 Tap on the category “Safety”.
 Tap on the category “Display OT values”.
You will receive an overview of the current measured temperature value of the overtemperature
protection sensor, the set cut-out values and the set cut-out mode (Process Safety). Some tem-
perature control units have 2 overtemperature protection sensors, and so 2 values are shown for
these temperature control units.
 Tap on the “OK” touchbutton after you have read/checked the information.
4.1.3 Testing overtemperature protection for functionality
Overtemperature protection (OT) does not trip
MORTAL DANGER FROM FIRE
 Test the response of the device every month and after each change of the thermal fluid in
order to assure proper functioning.