Follett FZR5-PL Series Manual de instalación, uso y mantenimiento - Página 7
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"Sleep" Function –––––––––––––––––––––––––––––––––––––––––––––––––––
You may not want the Follett temperature display when using a third-party temperature monitoring system with
its own temperature display. You can put the Follett controller "to sleep" to avoid confusion. The compressor icon
remains illuminated when the compressor is running.
1. Press BOTTOM RIGHT button to put display to sleep.
2. Press BOTTOM RIGHT button to return to display mode.
Controller Operation ––––––––––––––––––––––––––––––––––––––––––––––––
In normal operation, the controller displays cabinet temperatures
in degrees C (default) or user-selected degrees F (see
Temperature Display - Optional on page
to one decimal point, F temperatures are displayed to the nearest degree.
A snowflake LED displays when the compressor is running.
Up/down/set membrane switches at right and left of the temperature
display control all programming functions.
The controller is pre-programmed with a -35 C (-31 F) set point, which
provides a compressor cut-in at -33 C (-27 F) 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 (4 F) differential. The 2 C (4 F) differential means
that with a -35 C (-31 F) set point, for example, the compressor will turn
off at -35 C (-31 F) and turn on when it 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
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). C temperatures are displayed
Current cut-out temperature will display for approximately 5 seconds.
Display will return to current refrigerator temperature.
INPUT
Current cut-out temperature displayed and °C (°F) will flash
New cut-out temperature displayed
New cut-out temperature blinks three times, then current refrigerator temperature
will display
Fig. 8
Changing
DISPLAY
DISPLAY
FZR Undercounter Plasma Freezer
refrigeration system energized
evaporator fan energized
°C
- 35
defrost
7