EchoTherm™ SC20 Series Orbital Mixing Chilling/Heating Dry Bath

EchoTherm™ SC20 Series Orbital Mixing Chilling/Heating Dry Bath
OPERATING MANUAL
EchoThermJ ORBITAL MIXING,
DIGITAL, ELECTRONIC, CHILLING/HEATING DRY BATH
MODELS SC20, SC20XT & SC20XR
DOCUMENT NUMBER SC20/SC20XT/SC20XR-02
Revised November 17, 2011
TORREY PINES SCIENTIFIC, INC
2713 Loker Ave. West
Carlsbad, CA 92010
TELEPHONE: (760)-930-9400
TOLL FREE (USA): 866-573-9104
FAX: (760)-930-9480
E-MAIL: info@torreypinesscientific.com
Web site: www.torreypinesscientific.com
TABLE OF CONTENTS
PAGE
I.
INTRODUCTION
3
II.
WARRANTY
3
III.
RETURN OF ITEMS
3
IV.
LABELS
3
V.
CAUTIONS
4
VI.
GENERAL DESCRIPTION
4, 5
VII.
FRONT AND REAR PANEL CONTROLS
6
VIII.
SET UP INSTRUCTIONS
7
IX.
DISPLAY AND KEYBOARD DESCRIPTIONS
8
X.
SETTING TEMPERTAURE, ORBITAL MIXER
TIMER, DATA LOGGER
8, 9, 10, 11
XI.
TEMPERATURE CALIBRATION
11
XII.
RS232 INTERFACE
XIII.
CLEANING, MAINTENANCE, AND CONSUMABLE PARTS
12, 13
XIV.
ADDITIONAL SYMBOLS
13
12
2
I. INTRODUCTION
Congratulations on your purchase of an EchoTherm Orbital Mixing, Digital, Electronic,
Chilling/Heating Dry Bath. Please read the instructions carefully to insure that you
receive the maximum benefit from it. Also, be sure to fill out and return the enclosed
warranty registration card.
II. WARRANTY
Torrey Pines Scientific warrants this product to be free from defects in material and
workmanship for a period of one year from the date of purchase. If repair or adjustment
is necessary and has not been the result of abuse or misuse within the one-year period,
please return---freight prepaid---and correction of the defect will be made without
charge.
Out of warranty products will be repaired on a charge basis.
III. RETURN OF ITEMS
Authorization must be obtained from our Customer Service Department before
returning items for any reason. When applying for authorization, please include data
regarding the reason the items are to be returned. For your protection, items must be
carefully packaged to prevent damage in shipment and insured against possible
damage or loss. Torrey Pines Scientific, Inc. will not be responsible for damage
resulting from careless or insufficient packing. A 15% restocking charge will be made
on all unauthorized returns.
Note: Torrey Pines Scientific, Inc. reserves the right to make improvements in design,
construction, and appearance without notice.
IV. LABELS
There are various labels on the body of this unit. Listed below are the labels and their
meanings.
This symbol means AATTENTION. The INSTRUCTION MANUAL
IS TO BE CONSULTED FOR FURTHER INFORMATION@
This symbol means AWARNING, HOT SURFACE@
3
V. CAUTIONS
CHILLER/HEATER PLATE SURFACE
The SC20/SC20XR are capable of chilling and heating the plate surface form -10EC (20ºC for the SC20XT) to 100EC (110ºC for the SC20XR). The upper temperature of
110EC (230EF) is hot enough to burn the skin if touched. Use extreme caution at all
times. Never leave your unit accessible to others when it is hot. Never touch the plate
surface unless you are sure it is cold.
ORBITAL MIXER
The plate that holds the sample blocks is mounted on the orbital mixing mechanism.
Note that there are two cardboard restraints wedged under the spill shield around the
heater plate. Be sure to remove these before using the mixer to prevent damage.
ELECTRICAL
The cooling/heating module runs off 12 volts dc at 4.2 amps. The instrument is supplied
with a universal power supply that can take inputs from 90 to 265 volts AC "10%,
50/60Hz. The unit is supplied with an AC input cord for the power supply. Be certain to
use a line cord with the same rating and of the same type as the one supplied by the
manufacturer. Use the normal care and precaution one would use with any electrical
appliance.
VI. GENERAL DESCRIPTION
The Torrey Pines Scientific Model SC20, SC20XT and SC20XR are orbital mixing,
Peltier driven chilling/heating dry baths. They come with a universal power supply and
the chilling/heating module. All functions of the unit are accessible from the front panel
via the membrane switch and accompanying digital display. Since the unit runs from 12
volts dc, it can be powered from the cigarette lighter jack in any car or truck using the
cable #900-0101 available as an accessory from the manufacturer.
HEATER/CHILLER
The plate surface is a very flat aluminum plate designed for good contact with any flat
surfaced item placed on it. The plate size is 2.875" (7.3 cm) x 4.375" (11.1 cm). It is
designed in this size to accommodate 96-well assay plates and aluminum blocks
supplied by Torrey Pines Scientific. It chills and heats quickly without a load on it. The
temperature of the plate is sensed by a platinum RTD mounted under the plate. The
computer in the unit compares the plate temperature with the target temperature and
instructs the Peltier module to heat or chill the plate as required. The plate has 4 small
circular magnets mounted in the corners. These couple with the sample blocks to keep
them from rattling when mixing at high speeds.
4
ORBITAL MIXER
The plate, and therefore the sample blocks placed on it, can be instructed via the
membrane switch to rotate from 200 to 1000 rpm. The plate is supported by a flexure
leaf spring mechanism that is driven by a motor at the rear of the unit. The orbit is
about 2mm peak to peak and works well for mixing small samples in centrifuge tubes at
faster speeds and larger samples in larger vessels at slower speeds. This is a rugged
mechanism, but take care not to drop anything heavy on the plate surface.
TIMER
These units have a count down timer which reads in days, hours, minutes, and seconds
all at once. It can be set to a maximum of 30 days. The timer will be displayed at the
same time as the SET POINT and PLATE TEMP and MIXING SPEED. It has a user
settable AUTO-OFF as well. This works to turn the chiller/heater and mixer targets off
when the timer counts to zero.
ALARM
They have an audible alarm that sounds for one minute when the timer counts down to
zero. Touching the UP ARROW will turn the alarm off during this first minute. However,
if the alarm sounds for the entire minute, it will shut off the sound automatically. When
the alarm first sounds, the timer will start to count up. This lets the user know how
much time has passed since the first timer sounded.
DATA LOGGER
The unit is supplied with a built-in data logger. The data logger can be made to collect
up to 8110 data points in intervals of 1/second, 1/minute, one every 5 minutes. See the
instructions later for use.
5
VII. FRONT AND REAR PANEL CONTROLS
FRONT PANEL
The front panel of these units as shown above have a tactile touch membrane keyboard
with audible feedback. The keyboard is used to set all operating parameters. The
display is a two-line alphanumeric LCD with backlighting. When the unit is turned on,
the display will light and show the SET POINT and PLATE TEMP, which is the actual
temperature of the plate surface and the ORBITAL MIXER speed. There are two LED=s
on the front panel. One a power on indicator, the other, the BUFFER, flashes when the
data logger is collecting data and is on solid when the data logger is full and needs to be
dumped.
REAR PANEL
The rear panel has the on/off power switch at the left, the 12 volt dc power input jack in
the middle and the RS232 I/O port on the right.
6
VIII. SET UP PARAMETERS
SET UP PARAMETERS
1. Ambient operating temperature range is from 5EC to 40EC.
2. Maximum altitude of operation should not exceed 2000 meters.
3. Maximum ambient operating relative humidity should not exceed 80% at 31EC
decreasing linearly to 50% relative humidity at 40EC.
SET UP INSTRUCTIONS
1. Place the unit on a level, dry bench or surface.
2. Remove the cardboard shipping supports from under the heater plate spill shield.
3. Plug the power supply into a properly grounded, 3-wire outlet of proper voltage.
4. Plug the power supply cable into the rear of the chilling/heating module.
5. Place the samples in the block on the plate surface.
6. Turn the unit on by the switch on the rear of the chilling/heating module. The unit
display will light and the power LED will illuminate.
7. Set target temperature, timer and orbital speed, according to the instructions
Note: Do not use this equipment in any manner not specified by the
manufacturer.
ENVIRONMENTAL INFORMATION
1. This unit is for installation category II.
2. This unit is rated pollution degree 2.
7
IX. DISPLAY AND KEYBOARD DESCRIPTIONS.
DISPLAY
The display is a two-row alphanumeric LCD with backlighting for easy viewing. It is
used to set all the parameters of these units. When used with the keyboard, they can
be made to simply set a temperature, to set an orbital mixing speed, to set a timer, to
set the data logger, and to calibrate the plate against a local standard.
KEYBOARD
The keyboard consists of an UP ARROW and a DOWN ARROW. When the keys are
touched, an audible beep will occur. The user will note that the keys also have tactile
feedback when they are depressed. Use will be described in the next chapter.
X. SETTING TEMPERATURE, ORBITAL MIXING SPEED, TIMER AND DATA
LOGGER
SETTING TEMPERATURE
Note that the display has two lines. The upper line shows an arrow pointing to
the right and the letters Asp@ and a number and the letter AT@ and the actual plate
temperature. ASP@ is the set point, and AT@ is the actual plate temperature. The
arrow to the left of these numbers tells the user that temperature is active and the
UP and DOWN arrows can be used to set a target temperature of the plate. To
move the arrow on the left of the display down to the Orbital Mixer, depress both
the UP and DOWN arrows at the same time. This will shift the pointer arrow to
the orbital mixer. Now the value of the orbital mixer can be set using the UP and
DOWN arrows. Touching the UP and DOWN arrows at the same time again will
shift the pointer arrow in the display back to the temperature line.
To set a temperature for the plate, be sure the pointer arrow in the display is pointing to
the temperature (top) row of the display. Simply press the UP or DOWN ARROW until
the display shows the desired target temperature. The display will read SP and the
value you enter and T and the actual plate temperature. The unit will now go to the
targeted temperature. You will be able to watch the actual plate temperature change as
the unit drives to the SET POINT entered.
8
There are a couple of points to remember. Although the unit can be set to -10EC
(-20ºC for the XT), it can only go 30EC (40ºC for the XT) below ambient. What that
means is that the unit may not reach -10EC (-20ºC for the XT) if the ambient
temperature is 25EC. Also, the power available to heat and chill the plate and samples
on it is 50 watts. This means that there are some larger loads that will not go as far hot
or cold as wanted, or, if they do, it will take longer than the unloaded plate will. For best
results, use the covers available as accessories. The part number for the cover for the
aluminum blocks is 720-0009. The XR versions have 100 watts of power and can drive
larger loads hotter than the other units.
SETTING THE ORBITAL MIXER
The orbital mixer can run at speeds from 200 rpm to 1000 rpm. It has 9 settings from 1
(200 rpm) to 9 (1000 rpm). To set the orbital mixing speed be sure the pointer arrow on
the left of the display is pointing to ORBITAL SPEED. If so, touch the UP or DOWN
arrow to the speed setting wanted. Through use you will know what setting is best for
your experiments. Generally, the slower speeds work well with larger vessels like test
tubes, and the faster speeds with smaller vessels like 1.5 or 2.0 ml centrifuge tubes and
assay plates.
SETTING TIMER
The timer is a count down timer that reads in days, hours, minutes, and seconds
continuously. It can be set to 30 days maximum. When the timer counts down to zero,
it will sound an audible alarm for one minute. When the alarm starts to sound, the unit
will then count up so that the user may see how long it has been since the alarm timed
out. The audible alarm can be turned off after it has sounded by depressing the UP or
DOWN ARROW.
When the timer is set, the display will show the timer value in days, hours, minutes, and
seconds on the top line. The bottom line of the display will now show the SET POINT
as SP and then the value as set, and the display will show the PLATE TEMP as T and
the actual plate temperature.
To set the timer, simultaneously depress both the UP and DOWN arrows. The display
will toggle into a mode where the other functions can be accessed. The list of other
functions is:
EXIT
SET & START TIMER
START LOG
CALIBRATE
TIMER OPTIONS
LOG OPTIONS
(The timer will be covered here. More of the other functions will be covered later.)
9
Depress the DOWN arrow and the pointer arrow to the left of the list will move down the
list. Pressing the UP arrow will move the pointer arrow back up the list. Note that only
two items of the list can be displayed at any one time. When the arrow is pointing to
SET & START TIMER press both the UP and DOWN arrows at the same time. The
display will now show the timer in days, hrs, mins, secs. Pressing the DOWN arrow will
cause the pointer to jump from seconds to minutes to hours to days in that order. This
allows setting each as needed. Stopping the pointer where wanted and then pushing
the UP arrow allows a value to be set. Pressing both UP and DOWN arrows together
again will set the timer and change the display so that it now shows the timer and the
temperature set point and plate temperature. The timer will start to count down at this
point.
The other timer options under TIMER OPTIONS are AUTO-OFF and BEEP. These
options should be set before setting a timer value. To reach TIMER OPTIONS scroll
the pointer down the list until it points at TIMER OPTIONS. Next depress both the UP
and DOWN arrows together. The display will now show AUTO-OFF: NO, and BEEP:
YES. Note that the pointer arrow is still to the left. Pushing the DOWN arrow will
cause the pointer to move down and then up again between the AUTO-OFF and BEEP
functions. The UP arrow is then used to activate the AUTO-OFF (change the setting
from no to yes) and the BEEP (change the setting from yes to no). Once the setting has
been made, press the UP and DOWN arrows together and the unit will return the
display to where the pointer is at EXIT. Depress the UP and DOWN arrows together
and the display will return to the original screen. Play with this. You cannot hurt the
unit, and you will become more familiar with the operation.
SETTING THE DATA LOGGER
The data logger collects values of actual plate temperature at intervals that can be set
by the user. These data points, 8110 maximum, can be collected every second, every
minute, or every five minutes as set by the user. As data points are collected, the
BUFFER LED will flash, once for each data point collected. When the buffer is full, the
BUFFER LED will stop flashing and be on constantly. The buffer can then be down
loaded whenever wanted via the RS232 I/O port as per the instructions in that section of
the manual.
To set the data logger, depress both UP and DOWN arrows at the same time. The
display will then show the menu of other functions with the arrow pointer to the left.
Scroll down the selections by pressing the down arrow until LOG OPTIONS is indicated
by the pointer. Depress both the UP and DOWN arrows at the same time and the
display will say LOG ENTRY EVERY SECOND. Pressing the DOWN arrow again will
change the display to LOG ENTRY EVERY MINUTE. Pressing the DOWN arrow again
will change the display to say LOG ENTRY EVERY 5 MINUTES. Stop the display at the
sampling interval desired then press both the UP and DOWN arrows at the same time.
The display will now show the pointer arrow at EXIT. Push the DOWN arrow until the
pointer arrow is at START LOG. Press the UP and DOWN arrows at the same time
10
and the unit will start to collect data points and the BUFFER LED will start to flash. The
display will return to reading the SET POINT and PLATE TEMP.
To stop logging data points, depress the UP and DOWN arrows at the same time. The
display will go to the other options screen. Scroll the pointer to STOP LOG. Then
depress the UP and DOWN arrows together and the unit will stop collecting data points.
The BUFFER LED will stop flashing and the display will return to reading SET POINT
and PLATE TEMP again.
XI. TEMPERATURE CALIBRATION
The temperature calibration built into the unit is stable and will hold without drifting.
However, our standards for temperature measurement may not be the same as the
users. Therefore, these units are designed to be calibrated in the field by the user.
Follow the easy instructions below if calibration is wanted or needed.
Note: The calibration is two-point for optimum accuracy. Therefore, if calibration
is changed, it is best to clear the old calibration in memory. This is done by
scrolling down through the options in secondary functions to CLEAR CAL, and
then hitting both the UP and DOWN arrows together. The unit is calibrated at the
factory at 10ºC and 70ºC.
To calibrate, set the unit to go to the low calibration temperature, usually 5ºC. Give the
unit time to equilibrate. Then press and hold the UP and DOWN arrows at the same
time. The display will go to the other options screen with the pointer arrow to the left of
EXIT. Scroll the pointer down using the DOWN arrow until the pointer is at
CALIBRATE. Depress the UP and DOWN arrows at the same time and the display will
read PLATE LO and PLATE HI. Scroll to the temperature to be set and depress both
UP and DOWN arrows at the same time. The unit will now show DISPLAYED and the
temperature displayed, and MEASURED and the temperature measured. Now
measure the plate temperature (or the block or other item that may be holding the
samples to be controlled) using an electronic thermometer with a good surface
temperature probe. Note: This is a difficult temperature measurement to make
accurately. If help is needed, contact the factory. When the temperature
measurement is made use the UP or DOWN arrow to make the MEASURED
TEMPERATURE displayed read what the external meter measurement reads. Now
press the UP and DOWN arrows at the same time and the display will return to normal.
Repeat this procedure for the high temperature point. The unit is now calibrated.
11
XII. RS232 INTERFACE
The RS232 is available through the 9-pin D-subminiature connector on the rear of the
unit. Pins 2, 3 and 5 on the connector are used. It operates at 9600 baud, 1 stop bit, no
parity. No handshake hardware or software is necessary. It will work well on a
Windows terminal program per the settings in the chart on the following page. All
communications settings and queries are done using ASCII characters with carriage
return as the terminating character.
Note: To comply with CE and to avoid possible EMI radiation from the RS232
cable, use a shielded cable.
XIII. CLEANING, MAINTENANCE, AND CONSUMABLE PARTS
CLEANING
This unit is subject to splashes and spills during normal use. Also, condensation may
occur when heating after chilling. Be sure to wipe up all spills and condensation with a
soft cloth or paper towel as they occur. If a cleaning solution is necessary, use a mild
soap or detergent solution and a soft cloth. Do not use solvents. They could damage
the paint or display window on the unit.
Caution: Do not attempt to clean the plate surface when hot. Burns might occur.
MAINTENANCE
There is no ongoing maintenance program needed with this unit other than the normal
care and cleaning as instructed above, and a simple inspection done whenever the unit
is to be used. This simple inspection should include:
1. Checking that the AC cord and the DC cable to and from the power supply module
are not frayed or burned.
2. Checking that the unit is not dirty to a point where proper performance is impaired.
This is especially important relative to the membrane switch and LCD window.
3. Being certain to store the unit properly, when not in use, in an area that will not have
items placed on top of the unit, and covering the unit in a way that will keep dirt and
other foreign bodies out of the unit.
12
Note: Outside electrical interference such as lightning might on occasion cause
the unit to lock up or change target temperature without being instructed to do
so. The unit should be reset if this happens. To reset the unit turn it off from the
rear panel switch and turn it on again while holding the DOWN Arrow depressed.
SPARE PARTS AND CONSUMABLES
There are very few spare or consumable parts. A simple list is below.
Part Number
730-0001
730-0006
730-0008
730-0004
730-0005
Description
Power Cord, US
Power Cord, German (European)
Power Cord, UK
Power Cord, Italian
Power Cord, Australian
XIV. ADDITIONAL SYMBOLS
The following are additional symbols found on labels on the instrument
Symbol
Description
V
~
A
Hz
W
Voltage
Alternating Current
Current
Frequency
Power
13
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