34
-
¼
” copper pipe + short nut + safety valve (part
A
)
-
pre-assembled kit (tee piece + two male-female unions) (part
B
).
1.
Check that the pre-assembled kit is covered with Teflon tape.
2.
Screw the pre-assembled kit onto the solenoid valve, ensuring that the tee points
upwards.
3.
Connect the copper pipe to the tee.
4.
Attach the copper pipe to the freezer using Colson clamps, ensuring that the
safety valve points downwards.
5.
Check that all couplings are properly tightened.
6.
Connect the liquid nitrogen supply.
8.3
S
LOWING DOWN TEMPERATURE RISE
(
CRYO
-
ACCUMULATOR
)
Principle: the cryo-accumulator plates are incorporated into the useful volume of the freezer and do not reduce the
storage capacity.
It provides additional autonomy, slowing down temperature rise in case of any freezing issue.
As an example, for a 690 litres freezer, the rising temperature time from -80°C to -40°C is:
-
6
½
hours without cryo-accumulator.
-
13 hours with cryo-accumulator.
Note:
these tests were conducted with a freezer half full, at an ambient temperature of 25°C, without opening the door.
8.4
C
HART RECORDER
Optional chart recorder (paper or digital) are available, allowing the temperature to be recorded over a 24-hour or 7-day
period (Select on the unit).
Description
Replacing the paper disc (diagram):
1.
Unlock and open the recorder door.
2.
Raise the pen arm.
3.
Unscrew the knurled nut.
Lock
Clips
Chart
Pen arm
Pen
Knurled nut
