Taylor TW-357 manual User Options, Lid Switch Setup, Manual Defog Auto Defog, Quick-Chill

TW-357 REV E

The MENU PASSWORD can be set through the menu system of the control (MENU, 5, 2). The menu password requires entry of a 4-digit password before allowing access to the menu system to change any control settings. Follow the directions on the display to set a new password or to disable a password.

Codes 0000 & 9999 are invalid choices. A code of 9999 is used to access a procedure to clear passwords should they be forgotten.

User Options

The user options menu choice covers all other control settings not already covered. These include serial port settings, date and time settings, Lid Settings, Defog, Quick-Chill, Temperature Control, Valve Freeze-Guard, Display brightness and Control Information.

Lid Switch Setup

LID SWITCH SETUP can be accessed through the menu system of the control (MENU 6, 2, 2, 2). This option enables or disables the lid switch.

Manual Defog

DEFOG TIMER can be changed through the menu system of the control (MENU, 6, 2, 2, 1). This is the time interval that the valve is opened when the user manually presses the defog button. The possible choices are disabled through 90 seconds.

Auto Defog

The AUTO DEFOG (MENU, 6, 2, 2, 3) feature provides a burst of gaseous N2 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 time are disabled through 90 seconds.

Quick-Chill

The QUICK-CHILL(MENU, 6, 2, 2, 4) feature provides a burst of N2 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 time are disabled through 90- second purge of gaseous nitrogen.

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 Thermocouple #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 set-point 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 LN2 is maintained between the START FILL sensor and the STOP FILL sensor, the control attempts to maintain a selected temperature around Thermocouple #1.

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