Thermo Fisher Scientific CryoExtra CE8100 Series
Installation and Startup | 13
•
Connect the 12-pin wire harness to the Controller wire
harness connection.
•
If the freezer is equipped with battery backup measure
the voltage at the end connector for approximately
24 VDC to 27 VDC; if no voltage is present, the included
battery fuse must be installed before connecting the
battery to the main wire harness. Open the battery
enclosure and unscrew the fuse harness. Install the fuse;
close the fuse harness and the battery enclosure. (This is
done at the factory but should be verified at installation)
Note:
Do not connect the battery backup to the main wire
harness until the power supply has been verified to power up
the Controller.
•
Plug in the power supply to an appropriate wall outlet
with the proper AC voltage. Avoid wall outlets that are
connected to emergency generator power if possible.
Although an uninterruptible power supply (UPS) is ideal to
ensure continuous power, a surge protector or power
conditioner is recommended.
•
Plug the power supply into the Controller 30 VDC power
input. The Controller display should illuminate and begin
the startup sequence.
•
Following the startup sequence, the Controller may start
to alarm. This is normal.
•
Press “Alarm Mute” to silence the audible buzzer for
30 minutes. For installation and startup purposes, the
alarm buzzer can be disabled; however, be sure to
enable it when installation is complete. For instructions,
see the
•
Connect the battery backup to the main wiring harness.
While running on outlet power, the Controller supplies a
steady 27 VDC trickle charge to the battery backup. The
battery backup may need to be charged for several hours
before it is able to power the Controller.
•
Remove a caplug from the fill tee on the plumbing
assembly in order to connect the LN
2
supply. If using an
LN
2
cylinder as the liquid supply, securely connect and
tighten the transfer hose to both the fill tee connection
and the supply connection labeled “LIQUID”. If using a
bulk LN
2
supply system, securely connect and tighten
the supply connection to the freezer fill tee connection.
Note:
The recommended LN
2
supply pressure is 22-35 psig
(1.52 - 2.41 bar).
First Fill Startup procedure
1. Once the freezer has been properly installed, begin the
first fill procedure. Fill freezer at the desired location
where it is to be used. Do not fill to move freezer to
another location.
2. Open or remove the lid for the first fill due to the
accelerated LN
2
evaporation rate when filling a warm
freezer.
3. Verify supply pressure at 22-35 psig (1.52 – 2.41 bar)
open valve and press “Start Fill” to begin filling the freezer.
4. The first fill will take significantly longer than subsequent
fills due to a warm freezer.
5. It is recommended to place empty inventory system
components such as racks, boxes, frames or canisters in
the freezer during the first fill. This will cool the inventory
system as well as help the freezer reach its top box
temperature rating faster.
6. It is normal for some condensation or frost to develop
around the neck opening during the initial fill.
WARNING:
To avoid risk of electrical shock, this
equipment must only be connected to a properly
grounded power source or outlet.
