Taylor-Wharton 24K w/ AutoTend - Manual (Page 27)

Lid Switch Setup
LID SWITCH SETUP can be through the menu system of the control (MENU 6,2,2,2).
This option enables or disables the lid switch.
Auto Defog
The AUTO DEFOG (MENU, 6,2,2,3) feature provides a burst of gaseous N
2
to the
freezer to clear the fog when the lid is opened. This is activated through the lid switch.
If the lid switch is deactivated this feature will be disabled. The choices for auto defog
are disabled through 90 seconds.
Auto Defog Timer Set
AUTO DEFOG TIMER SET can be changed through the menu system of the control
(MENU, 6,2,2,3). This option sets the time interval that the valve is opened on an auto
defog (when the lid is opened). The possible choices are Disabled through 90 sec-
onds.
The lid switch must be enabled to use this feature.
Quick-Chill
The QUICK-CHILL (MENU, 6,2,2,4) feature provides a burst of N
2
gas to the freezer
to lower the temperature each time the lid has been opened and then closed. This is
activated through the lid switch. If the lid switch is deactivated this feature will be
disabled. The choices for quick-chill are disabled through 90 second purge of gas-
eous nitrogen.
Quick-Chill Timer Set
QUICK CHILL TIMER SET can be changed through the menu system of the control
(MENU 6,2,2,4). This option sets the time interval that the valve is opened on a quick
chill (when the lid is closed). The possible choices are disabled through 90 seconds.
The lid switch must be enabled to use this feature.
Control By Temperature
CONTROL BY TEMP can be set through the menu system of the control (MENU,
6,2,3). By enabling this option KRYOS will control by temperature around Thermo-
couple #1. The Temperature Control menu choices are only available if thermocouple
#1 is enabled.
Temperature Control Settings
TEMP CTRL SETTINGS can be set through the menu system of the control (MENU,
6,2,3,2,1). The user can set the temperature that must be maintained in the freezer
around thermocouple #1. The setpoint can be set from -180º to -100ºC.
Control Temperature
KRYOS can also provide a vapor chamber temperature control for specimens that
must be stored in a particular vapor temperature range. The temperature control
function operates in addition to the level control function. The level control always
takes precedence. If the liquid level of LN
2
is maintained between the START FILL
sensor and the STOP FILL sensor, the control attempts to maintain a selected
temperature around Thermocouple #1.