24 | Operation
Thermo Fisher Scientific CryoExtra CE8100 Series
inactivity, the display will automatically return to the main
monitoring display screen.
controller with newer displays have the added functionality of
a quick reference scroll menu. Pressing the up and down
arrow keys simultaneously while on the main monitoring
screen will display the Controller’s serial number and firmware
version. Pressing the up or down arrow keys will then scroll
through the level, temperature and gas bypass settings. The
user can return to the main monitoring screen by pressing the
“ESC” key or waiting 30 seconds.
Main Monitoring Display
Screen
Temperature Settings
This section describes how to access and adjust the various
temperature settings on the Controller.
Note:
Security Level 2 or higher is required to adjust the
Temperature Settings.
Enable / Disable Sensors
The default setting for both Temp A and Temp B sensors is
enabled.
1.
Press “SETUP”
Controller will prompt for a
password. A flashing cursor on the
entry screen will make it clear
which digit is being changed. Use
the “
” keys to scroll to the
appropriate number. Press
“ENTER” to advance the cursor to
the next position.
2.
Press “ENTER”
The display will read “Temperature
Menus”.
3.
Press “ENTER”
The display will read “Temp A
Menu”.
Note:
: To access Temp B Menu,
press “SETUP” instead of
“ENTER”.
4.
Press “ENTER”
The display will read “Temp A Enabled”.
Use the “
” keys to change
Temp A to DISABLED and press
“ENTER” to save the setting
change.
If a setting was changed, a
confirmation display will read “New
Setting Accepted”.
High Temperature Alarm Test
The high temperature alarm test allows a user to simulate a
high temperature alarm without having to remove it from the
freezer. Once initiated, the Controller will apply a small voltage
to the sensor, which causes the sensor to heat up.
The Controller will continue to heat the sensor until it exceeds
the High Temp Alarm setting. Once surpassed, a High Temp
Alarm will result and the sensor readings will begin to
decrease. The alarm buzzer will sound and the remote alarm
contacts will switch to alarm state until the simulated alarm is
cleared. (Press Alarm Mute)
Note:
The heat generated by the sensor during the High
Temperature Alarm Test is NOT enough to affect the actual
temperature in the freezer storage space. If the sensor is
submerged in LN
2
, the heat generated by the sensor may not
be sufficient to initiate a high temperature alarm.
1.
Press “SETUP”
Controller will prompt for a
password. A flashing cursor on
the entry screen will make it clear
which digit is being changed. Use
the “
” keys to scroll to the
appropriate number. Press
“ENTER” to advance the cursor to the next position.
2.
Press “ENTER”
The display will read
“Temperature Menus”.
Higher User Level
Required use
to
ENTER Password
0000
Press ENTER for
Temperature Menus or
press SETUP for next
menu
Press ENTER for
Temp A Menu or press
SETUP for next menu
Temp A ENABLED
Use to
adjust
Press ENTER to save
New Setting Accepted
Higher User Level
Required use
to
ENTER Password 0000
Press ENTER for
Temperature Menus or
press SETUP for next
menu
