Owner manual

Chapter 4: Using Your Stoppering Tray Dryer
Product Service 1-800-522-7658
19
The segment number will always indicate “M” while operating in the
manual mode. Segment numbers are used only in the automatic mode to
identify portions of the programmed cycle. Temperatures and vacuum are
displayed in the units selected during the set up procedure. Above 5.0
mBar the display will show “hi” vacuum. System temperature rather than
probe temperature is the parameter that is regulated by the controller.
P1
-indicates what program is selected
PRB
-shelf probes for shelf 1, 2 and 3 (If a probe
is not installed, the display shows ---)
C
-°C
F
-°F
TMP
-system temperature
SEG
-indicates what segment is active and
ramping or holding.
M
-manual mode
VAC
-system vacuum level
m
-mBar
P
-Pascal
T
-Torr
R
-Ramp
H
-Hold
TR
-Time remaining in hours
(9) To stop, push RUN/STOP button, which will turn off the amber LED
over the switch, the refrigeration system and the heater. To turn off
the entire system, turn the power switch off.
Automatic Control Operation
The Stoppering Tray Dryer is equipped with a microprocessor based controller
that permits temperature to be programmed using as many as five different
segments. Each segment consists of a temperature ramp function and a
temperature hold function. There are five programs of five segments each that
store the settings. One of the five may be selected by pressing the DISPLAY
switch until the AUTO LED lights. Press the UP/DOWN keys to select the
desired program, and then press “ENTER.” The display will change to show the
parameters for this program. The ramp allows the temperature of the sample to be
increased or decreased at any desired rate within the capacity of the heating and
cooling systems of the Stoppering Tray Dryer.
A Stoppering Tray Dryer without samples on shelves is capable of cooling at a
rate of approximately .5°C/minute and can heat at approximately 1.3°C/minute.
The cooling ramp rate may be slower as the temperature approaches –40°C. Hold
temperatures may be set anywhere from +40°C to –40°C in 1°C increments.
P1 PRB 1=XX 2=XX 3=XXc
TMP=XX SEG=M VAC=hi m