TORREY PINES SCIENTIFIC EchoTherm IC22 User manual

OPERATING MANUAL
EchoTherm
DIGITAL, ELECTRONIC CHILLING/HEATING DRY BATH
MODELS IC22 & IC22XT
Applies to version 5.2 and higher
DOCUMENT NUMBER IC22 & IC22XT-02
Revised Feb 2021
TORREY PINES SCIENTIFIC, INC.
2713 Loker Ave. West
Carlsbad, CA 92010
TELEPHONE: [phone]
TOLL FREE: (866)-573-9104
FAX: [phone]
E-Mail: [e-mail]
Web site: www.torreypinesscientific.com

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Table of Contents
I. INTRODUCTION..................................................................................4
II. WARRANTY .......................................................................................4
III. RETURN OF ITEMS ..........................................................................4
IV. LABELS ............................................................................................5
V. CAUTIONS.........................................................................................5
CHILLER/HEATER PLATE SURFACE...........................................................5
ELECTRICAL..................................................................................................5
VI. GENERAL DESCRIPTION................................................................6
HEATER/CHILLER PLATES ..........................................................................6
TIMER.............................................................................................................6
ALARM ...........................................................................................................6
DATA LOGGER..............................................................................................6
VII. FRONT AND REAR PANEL CONTROLS........................................8
FRONT PANEL...............................................................................................8
REAR PANEL.................................................................................................9
VIII. SET UP PARAMETERS................................................................10
SET UP PARAMETERS...............................................................................10
SET UP INSTRUCTIONS.............................................................................10
ENVIRONMENTAL INFORMATION.............................................................10
IX. DISPLAY AND KEYBOARD DESCRIPTIONS. ..............................11
DISPLAY.......................................................................................................11
PUSH BUTTONS..........................................................................................12
X. SETTING TEMPERATURE AND OTHER FEATURES...................14
SETTING TEMPERATURE ..........................................................................14
SETTING TIMERS........................................................................................15
SETTING THE UNIT TO “IDLE MODE”........................................................17
DATA LOGGER............................................................................................19
XI. TEMPERATURE CALIBRATION....................................................21
Two-Point User Calibration...........................................................................21

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Single-Point User Calibration.......................................................................22
MENU: Calibrate...........................................................................................23
MENU: Reset Cal Points...............................................................................24
XII. TEMPERATURE MEASUREMENT ERROR CODES....................25
XIII. RS232 SERIAL COM INTERFACE...............................................26
Cable Pinout.................................................................................................26
COM Settings ...............................................................................................26
XIV. CLEANING, MAINTENANCE, AND CONSUMABLE PARTS......27
CLEANING ...................................................................................................27
MAINTENANCE............................................................................................27
SPARE PARTS AND CONSUMABLES........................................................28
XV. ADDITIONAL SYMBOLS...............................................................28
APPENDIX A: Commands Using the Serial Port...............................29

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I. INTRODUCTION
Congratulations on your purchase of an EchoTherm 2-Position, Digital Electronic
Chilling/Heating Dry Bath Model IC22 or IC22XT. Please read the instructions carefully to
insure that you receive the maximum benefit from it. Also, be sure to go to our web site
and register your unit for warranty coverage
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 toprevent damageinshipmentandinsured againstpossibledamage
or loss. Torrey Pines Scientific 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 reserves the right to make improvements in design,
construction, and appearance without notice.

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IV. LABELS
There are various labels on the body of this unit. Listed below are the labels and their
meanings.
This symbol means: ATTENTION. The INSTRUCTION MANUAL IS TO
BE CONSULTED FOR FURTHER INFORMATION
This symbol means: WARNING. HOT SURFACE.
This symbol means: GROUND OR EARTH CONNECTIONS
V. CAUTIONS
CHILLER/HEATER PLATE SURFACE
TheIC22/IC22XT modelsarecapableofchillingand heating each platesurface from-10ºC
to 100ºC (IC22) or -20C to 100ºC (IC22XT). Temperatures from 44ºC (110ºF) to 100ºC
(212ºF) are 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 cool. Note that there is a red LED on the front panel marked
HOT. This will illuminate when the heater surface goes above 50.0°C (122°F).
ELECTRICAL
The cooling/heating module in the IC22/IC22XT Series operates at 12 volts DC at 8.4
Amps. The units are supplied with a universal power supply that can take inputs from 100
to 260 volts AC, 50/60 Hz. The units are 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 andprecaution one would use withany
electrical appliance.

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VI. GENERAL DESCRIPTION
Torrey Pines Scientific IC22/IC22XT units are Peltier driven for chilling & heating. They
come with a universal power suppl. The units have only one moving part, the DC fan that
cools the unit. Everything else is solid state and should last years without problem. All
functions of the unit are accessible from the front panel via the membrane switch and
accompanying digital display.
HEATER/CHILLER PLATES
The temperature controlled surfaces are very flat aluminum plates designed for good
contact with any flat surfaced item placed on them. The plate sizes on the IC22 are 2.875"
(73 mm) x 4.375" (111 mm). They will chill and heat quickly without a load on them. The
temperature of the plates are sensed by a platinum RTD mounted under each plate. Each
individual plate has a dedicated Peltier heating/chilling assembly and is controlled
separately. The temperature controller in the unit compares the plate temperature with the
target temperature for each plate, and instructs the individual Peltier module toheator chill
the plate as required to keep each Plate Temperature equal to its Set Point temperature.
TIMER
All units have a countdown timer for each plate reading in hours, minutes, and seconds. It
can be set to a maximum of 99 hours 59min 59sec. The timer will be displayed in place of
the Set Point temperature for the plate for which the timer has beenset. Pressingeitherthe
UP or DN button will display the Set Point then return to displaying the timer after 5
seconds. An AUTO-OFF feature is provided in the Menu under “Timer Options”. If AUTO-
OFF is enabled, the specific plate will go into idle mode when the timer counts down to
zero. See “Setting Timer” and “Setting Idle Mode” sections in this manual for more details.
ALARM
Theunits have an audible alarm that sounds for one minute when the timer countsdown 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 timer first sounded. The alarm can be disabled using “Timer Options”
in the Menu.
DATA LOGGER
The units are supplied with a built-in data logger. The data logger can be made to collect
up to 27,000 data points in intervals of 1/second, 1/minute, or one every 5 minutes. The
data can be retrieved using the RS232 serial port. See the instructions later for use.

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NON-VOLATILE MEMORY
The units are equipped with EEPROM memory that will store user settings such as thelast
set point, MENU options, user changed calibration points, and logged data points. The
stored values will be recalled each time the unit powers up to maintain the configuration of
the previous session.

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VII. FRONT AND REAR PANEL CONTROLS
FRONT PANEL
The front panel of the IC22/IC22XT series shown above has a tactile touch membrane
keyboard with an audible feedback button press beep. The keyboard is used to set all
operatingparameters. The displayisatwo-linealphanumericLCDwithbacklighting. When
the unit is turned on the display willlight and show the Set Point(“sp”)and Plate Temp.(“T”)
for both the front (“F”) and back (“B”) plates. Each set point temperature is set by pressing
the up arrow button to increment the value, and the down arrow button to decrement the
value. The arrow cursor on the display indicates which plate is selected. Pressing both up
and down arrow buttons at the same time will toggle the cursor between the front and back
plates. The displayed plate temperatures are the actual temperature of the center of the
plate surface. There are two LEDs on the front panel. One is apower-on indicator and the
other is the plate surface hot indicator that will illuminate when the plate is at or above 50C.

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REAR PANEL
The rear panel shown has the on/off power switch at the left, the 12 Volt DC power input
jack in the middle, the DB9 connector for the RS232 I/O port is on the right.

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VIII. SET UP PARAMETERS
SET UP PARAMETERS
1. Ambient operating room temperature range is from 5ºC to 40ºC.
2. Maximum altitude of operation should not exceed 2000 meters.
3. Maximum ambient operating relative humidity should not exceed 80% at 31ºC
decreasing linearly to 50% relative humidity at 40ºC.
SET UP INSTRUCTIONS
1. Place the unit on a level, dry surface.
2. Plug the power supply into the line cord provided and then into a properly grounded,
3-wire outlet of proper voltage.
3. Plug the power supply cable into the rear of the chilling/heating module.
4. Place the sample on the plate surface.
5. 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.
6. Set target temperature and timer, if wanted, according to the instructions that follow.
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.

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IX. DISPLAY AND KEYBOARD DESCRIPTIONS.
DISPLAY
Thedisplayisatwo-row alphanumeric LCD with backlighting foreasyviewing. Itisusedto
set all the parameters of the units. The two push buttons enable the user to set a
temperature, to set a timer, and to calibrate the temperature against a local standard.
Figure 1 below describes the screens for different modes of operation.
Figure 1:Display Screens for Different Modes of Operation

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PUSH BUTTONS
Two push buttons are provided on the front of the unit for user input. One button is labeled
with an UP ARROW and the other with a DOWN ARROW. When the buttonsare pressed,
an audible beep will occur. The keys also have tactile feedback when they are depressed.
Using the buttons to set all of the parameters of the IC22/IC22XT is accomplished via
single and double key presses as well as press-and-hold double key presses.
Singlekeypresses are accomplished bybrieflypressingandreleasinganUPARROW or a
DOWN ARROW button. If a single button is pressed and held for 2 seconds, the setting
will increase or decrease rapidly depending on the button pressed. For example, in the
main IC22/IC22XT LCD display, briefly pressing and releasing the UP ARROW will
increase the set point temperature by 1C with each press. If the UP ARROW is pressed
and held down, the set point will increase by 1C after the first press but after holding for
2sec the set point temperature will rapidly increase until the button is released or until the
maximum set point for the unit is reached.
A double key press is accomplished by simultaneously pressing and releasing both UP
and DOWN ARROW buttons. For example, in the main IC22/IC22XT LCD display,
briefly pressing and releasing both arrows will toggle between control of the front or
back plates. When the arrow cursor is after the “F” on the bottom line of the
display(“F>”),single key presses will increase or decrease the set point of front plate.
Likewise, performing a double key press that results in the cursor moving to after the “B”
on the top line of the display(“B>”), single key presses will then increase or decrease the
set point of back plate.
Apress-and-hold doublekeypressisdescribedassimultaneouslypressingandcontinuing
to press both UP and DOWN ARROW keys for approximately 3 seconds. For example, in

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the main IC22/IC22XT LCD display with the cursor referencing the front plate (“F>”),
pressing-and-holding both arrows will bring up the Menu of front plate features on the LCD
display. Likewise, with the cursor referencing the back plate (“B>”), pressing-and-holding
both arrows will bring up the Menu of back plate features on the LCD display. Scrolling to
the various options in the Menu is accomplished by pressing the UP and DOWN ARROW
buttons. This manual contains details on accessing and setting the various Menu options.

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X. SETTING TEMPERATURE AND OTHER FEATURES
Although the units can be set to -10ºC (-20 on XT’s), they can only go 30ºC (40ºC on XT’s)
below ambient. What that means is that the units may not reach -10ºC (-20ºC on XT’s) if
the ambient temperature is 25ºC. Also, the power available to heat and chill the plate and
samples on it is 50 watts for the IC22 and 100 watts for the IC22XT. 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 for the
IC22/IC22XT. Note that the IC22XT has twice the power as the IC22 and will move
samples blocks faster and farther away from room temperature than the IC22.
SETTING TEMPERATURE
As described in the “KEYBOARD” section of this manual, use double key presses to pick
the front or back plate. To set a temperature for the front or back plate,simplypresstheUP
or DOWN ARROW until the set point (sp=) shows the desired temperature. See Figure 2
for details. The unit will now control the temperature of the plate to that temperature.
Note that the actual plate temperature will be shown in the displayas “T=”.Youwillbe able
to watch this number change as the unit drives to the set point entered.
If there is a problem with the temperature measurement circuitry or if the calibration
values are invalid, an error code will be displayed in the location of the “Plate:”
temperature. For example, if the low calibration measured value for the front plate is
out of range, the unit will display “T=cal1” for the front plate temperature. See the “XII
Temperature Measurement Error Codes” section of this manual for a complete listing
and the appropriate course of action should an error occur.
Figure 2: How to Select Front or Back Plate then Change Set Point

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SETTING TIMERS
The timer is a countdown timer that reads in hours, minutes, and seconds continuously. A
separate timer may be set for the front and back plates by entering the menu when the
cursor is referencing the front or back plate on the display. Timers can be set to 99 hours,
59 minutes and 59 seconds 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 bydepressing theUP or DOWN ARROW. The
audible alarm feature can be disabled in the “Timer Options” section in the menu (see
Figure 5).
The timer is set by accessing the Timer option in the Menu. See Figure 3 for details on
setting and starting the Timer. Figure 4 indicates how to stop the timer. When the timer is
stopped, the last timer value is “frozen” on the screen until either the Up or Down buttons
are pressed. This enables the user to capture the last value.
The Menu also includes Timer Options to control the features of the timer. The audible
alarm may be enabled or disabled when the timer reaches zero. If the “Auto-Off” featureis
disabled (“Auto-Off: no”), the unit will continue to control the plate to the set point
temperature when the timer reaches zero. If the “Auto-Off” feature is enabled (“Auto-
Off:yes”), the unit will go into “Idle Mode” when the timer reaches zero. When the unit is in
Idle Mode, no power will be directed to the plate—the plate is essentially “turned off” and
will naturally return to room temperature. SeeFigure 5 for details onTimerOptions andthe
Idle Mode section of this manual for more details.
Figure 3: Menu Map to Set and Start the Timer for the Front Plate

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Figure 4: Menu Map to Stop the Running Timer
Figure 5: Menu Map to Select Timer Options

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SETTING THE UNIT TO “IDLE MODE”
Setting the unit to “Idle Mode” will internally turn off power to the heater/chiller assembly
and allow the sample to heat up or cool off naturally to ambient conditions. It is essentially
turning the set point off, which is why the set point on the LCD indicates “off” when the unit
is in Idle Mode. Idle mode may be set and cleared in different ways and the previous set
point value may be cleared or retained depending on the method used (See below). See
Figure 6 and Figure 7 for details on setting and clearing Idle Mode using the menu.
The unit will enter Idle Mode in two ways:
1. By using the Menu option (“Set Idle Mode”)
2. By setting the “Auto-Off” option to “yes” in the Timer Options menu. The
IC22/IC22XT will enter Idle mode when the countdown timer reaches 00:00:00 at
the end of a timer period.
The unit will exit Idle Mode in the following ways:
1. By pressing either arrow button –the set point will be set to 20C.
2. By selecting “Clr Idle Mode” from the menu—the set point before the unit was set
to Idle Mode will be restored
Figure 6: Menu Map to Set Idle Mode using the Menu

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Figure 7: Menu Map to Clear Idle Mode using the Menu Using the Menu

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DATA LOGGER
The data logger collects values of actual plate temperature at intervals that can be set by
theuser. Thedatapoints,29,670maximum,maybecollectedeverysecond,everyminute,
or every five minutes as set by the user. When the unit is in Log mode, the character “L”
will be displayed on the LCD screen in the lower left corner. Front, Back or both plate
temperatures may be logged by starting and stopping log sessions per the plate selection
cursor on the display. The data buffer can then be downloaded via the RS232 I/O port (ref
XIII. RS232 INTERFACE). Figures 8, 9, and 10 show the steps to set the log period and
how to start and stop a logging session.
Figure 8: Menu Map to Set Log Period

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Figure 9: Menu Map to Start Logging Session
Figure 10: Menu Map to Stop Logging Session