Taylor-Wharton 24K w/ AutoTend - Manual (Page 42)

above the STOP FILL thermistor assignment. For this reason START FILL cannot be
assigned to thermistor number 1. Similarly, STOP FILL cannot be assigned to ther-
mistor number 7. The factory installs this seven thermistor assembly all the way to the
floor of the sensor tube, which positions thermistor number 1 one inch above the floor
(i.e.; the first thermistor is offset from the floor zero inches).
1. If you would like to stop the fill at a depth greater than seven inches from the
floor, the sensor assembly must physically be raised inside the sensortube. The
distance that it has been raised becomes the new OFFSET and the controller
must be notified of this offset from the floor. The factory settings are START FILL
at 3 inches and STOP FILL at 6 inches, with an OFFSET of zero. If you want to
establish a START at 15 and STOP at 18, raise the sensor assembly 12 inches
(18 minus 6) and set the controller OFFSET to 12 by: Selecting MENU, LEVEL
SENSING, SET SENSOR OFFSET. The unit should begin filling. The EX LOW
LEVEL sensor has been subjected to the gaseous condition and should sound an
alarm (O.K. to MUTE). Note that in this scenario, you have directed your LN
2
supply to accomplish up to a 15 inch fill. It may be necessary to stop the fill
manually and allow the supply vessel time to regain enough pressure to complete
this exceptionally long fill.
Power Failure Alarm
If power is interrupted, a note of the time and duration will be recorded in the log. No
local alarm will be sounded unless a high temperature is detected after power re-
sumes. The Remote Alarm will be triggered anytime the power is interrupted.
Factory Settings
To restore factory settings at any time KRYOS can be re-initialized. Please note that
a re-initialization clears all logs and passwords and resets settings to those listed in
the table below. To reset factory settings in the control, go to the menu choice
ABOUT THIS CONTROL. (MENU, 6,4) and while looking at this screen type in 1973.
The control will lead you through the process required to reset the factory settings.
Temperature:
Thermocouple #1
Enabled
Thermocouple #2 Disabled
Hi Temp #2 Alarm -100º C
Hi Temp #2 Alarm -100ºC
Level Control:
OFFSET
0 inches
START FILL Sensor 3 inches
STOP FILL Sensor 6 inches
Sensor Assembly Freeze-Guard
System:
RS-232 Enabled
Handshaking CTS/RTS
Baud Rate 19200
Date & Time USA Central Time
Brightness 100%
Defog Timer 15 seconds
Lid Switch Enabled
Auto Defog Timer 15 seconds
Quick-chill 15 seconds
Temperature Control:
Temperature Control Disabled
Temperature -150ºC
Temperature Range +2ºC
Alarms:
LN
2
Supply Alarm 30 minutes
Sensor Error Enabled
Remote Alarm 30 minutes
Lid Open Too Long 10 minutes
Thermocouple Open Alarm Enabled
Logging:
Sensor Error Log Enabled
Low LN
2
Supply Log Enabled
Remote Alarm Log Enabled
Open Thermocouple Enabled
Hi Temp #1 Log Enabled
Hi Temp #2 Log Enabled
Fill Logging Enabled
Lid Open/Closed Log Enabled
User Access Log Disabled
Thermocouple #1 Rate Log Disabled
Thermocouple #2 Rate Log Disabled
Freeze-Guard:
Valve Open Duration Disabled
Valve De-icing Enabled