Follett FZR5-PL Series Manual de instalación, uso y mantenimiento - Página 6
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Controller operation
In normal operation the controller displays cabinet temperatures in
degrees C.
The controller is pre-programmed with a -35 C (-31 F) set point
which provides a compressor cut-in at -33 C (-27F) and cut-out at
-35 C (-31 F). The controller set point can be raised to -25 C
(-13 F) when a lower temperature is not desired. Follow instructions for
changing temperature cut-out below.
All set points have a 2 C differential. The 2 C differential means that with
a -35 C set point, for example, the compressor will turn off at -35 C (-31
F) and turn on when the cabinet reaches -33 C (-27 F).
This temperature may not reflect the temperature of the blood products
in the freezer. The temperature of the blood products will be reflected on
the recorder chart and the recorder's digital temperature display. At times
there may be a difference between the two displayed temperatures.
Adjust the controller SET value to achieve your desired blood product
temperature as displayed on your chart recorder.
To display temperature cut-out
STEP
INPUT
1
Press and release SET
To change temperature cut-out
STEP
INPUT
1
Press and hold SET for 3
seconds
2
Press UP or DOWN arrows to
desired cut-out temperature
3
Press and release SET
6
Controller operation
Current cut-out temperature will display for approximately 5 seconds.
Display will return to current refrigerator temperature.
Current cut-out temperature displayed and °C will flash
New cut-out temperature displayed
New cut-out temperature blinks three times, then current refrigerator
temperature will display
Fig. 7
refrigeration
evaporator
system
fan
energized
energized
- 35
defrost
DISPLAY
DISPLAY
FZR PL Series 00939132R00
°C