Hanna Instruments HI 839800 User manual

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This Instrument is in
Compliance with the CE Directives
Instruction Manual
HI 839800 COD REACTOR
and Test Tube Heater
2008 Series

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TABLE OF CONTENTS
PRELIMINARY EXAMINATION ............................................................................................................... 3
GENERAL DESCRIPTION ....................................................................................................................... 3
ABBREVIATIONS.................................................................................................................................. 3
HEALTH & SAFETY .............................................................................................................................. 4
SPECIFICATIONS.................................................................................................................................. 4
FUNCTIONAL DESCRIPTION ................................................................................................................. 5
ERRORS AND WARNINGS .................................................................................................................... 6
STARTUP ............................................................................................................................................ 6
TEMPERATURE SELECTION ................................................................................................................... 7
DIGESTION PROCEDURE ....................................................................................................................... 8
MAINTENANCE .................................................................................................................................. 10
ACCESSORIES .................................................................................................................................... 10
WARRANTY ....................................................................................................................................... 11
Dear Customer,
Thank you for choosing a Hanna product. This manual will provide you with the necessary information for
the correct use of the instrument. Please read it carefully before using the meter. If you need additional
technical information, do not hesitate to e-mail us at [email protected].
This instrument is in compliance with directives.
All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner,
Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA.
Please examine this product carefully. Make sure that the instrument is not damaged. If any damage
occurred during shipment, please notify your Dealer.
Each HI 839800 Test Tube Heater is supplied complete with:
• Power Cable
• Instruction Manual
Note: Save all packing material until you are sure that the instrument works correctly. Any defective item
must be returned in its original packing.
GENERAL DESCRIPTION
The HI 839800 thermo-reactor is constructed of durable materials with a vial capacity to perform up to 25
digestions simultaneously.
The reactor is equipped with 2 predefined temperature programs (dedicated temperature settings for COD
and total phosphorous reactions at 150°C, and also 105°C for total nitrogen digestion).
In addition, HI 839800 features LED indicators for visual indication of power on (POWER), heating in
progress (HEATING) and hot surface warning (HOT).
The heater block temperature can be verified by placing a thermometer in the temperature well in the block.
A 3-hour timer is incorporated for applications where timed digestions are required. When this feature is
enabled, a beep will be heard and the heating element will turn off at the end of the selected time period.
The reactor contains a thermal fuse that prevents overheating, by turning off the heating element.
The temperature is continuously displayed on the LCD even when there is no active temperature program
running.
Two models are available:
• HI 839800-01 runs with 115 Vac power supply
• HI 839800-02 runs with 230 Vac power supply
degree Celsius
Chemical Oxygen Demand
°C:
COD:
PRELIMINARY EXAMINATION
ABBREVIATIONS

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Temperature of Reaction 105 °C or 150°C (221 °F or 302 °F)
Temperature Stability ±0.5°C
Temperature Range -10°C to 160°C
Accuracy ±2°C (@ 25°C)
Capacity 25 vials (dia 16x100 mm), 1 receptacle for a stainless steel reference
thermometer
Warm-up Time 10 - 15 minutes, depending on selected temperature
Operating Mode timed (0 to 180 minutes) or infinity mode
Environment 5 to 50°C (41 to 122 °F)
Power Supply HI 839800-01 115 Vac; 60 Hz; 250 W
(fuse protected) HI 839800-02 230 Vac; 50 Hz; 250 W
Dimensions 190 x 300 x 95 mm (7.5 x 11.8 x 3.7")
Weight approx. 4.8 kg (10.6 lb.)
Before unpacking, setting up or using this reactor it is important to carefully read this manual. Pay
particular attention to all warnings, cautions and notes. Failure to do so could result in serious injury to the
operator or damage to the equipment.
To ensure the safe use of this reactor, it must not be installed or used in any manner other than that
specified in this manual.
Reactor Operation: The Reactor incubates glass vials containing hazardous chemicals at high
temperature. Read the Material Safety Data Sheet (MSDS) before handling reagent vials.
Handling Reagent Vials: Handle the vials very carefully and wear protective clothing. After use, dispose
of the reagent vials according to local regulations.
Safety Equipment: When operating with Reactor use protective clothing, including goggles or face mask,
and gloves.
Use of the optional safety shield is highly recommended.
Reagent Spills: Wipe up spilled reagents immediately. If reagent contacts skin, rinse the affected area
thoroughly with water. Avoid breathing released vapors. Read the Material Safety Data Sheet (MSDS) for
each reagent for complete chemical information.
Fire Hazard: Avoid the presence of flammable liquids or paper near the operating Reactor. A fire hazard
could be created.
1) Heater block: can hold up to 25 vials.
2) POWER LED indicator: lights (green) when the power switch on the back of the reactor is set in the ON
position.
3) HOT surface indicator: flashes (red) if the block temperature is above 50°C.
4) HEATING LED indicator: lights (yellow) only when the heater is ON. When the indicator cycles ON and
OFF, the heater is maintaining a stable temperature.
5) ▲, ▼: keys are used to adjust the timer values when setting reaction time.
6) 105°C/150°C: key is used to select the temperature program, 105°C or 150°C (221°F or 302°F).
7) START: key is used to start the selected temperature program or to start the timer after placing the
vials into the heater block.
8) STOP: key is used to stop the heating process or to stop the timer.
9) Liquid Crystal Display (LCD)
10) Power switch: turns the reactor ON and OFF. When the power switch is set in the ON position
the power indicator will light.
11) Power supply: 115 or 230 Vac, depending on model.
12) Fuse holder: the fuse is placed on the rear of the case for easy maintenance.
FUNCTIONAL DESCRIPTION
REACTOR DESCRIPTION
SPECIFICATIONS
HEALTH & SAFETY

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•Press the ▲, or ▼key to increase or decrease the reaction time.
•An infinite mode for time may also be set if the reaction time is adjusted in the way described above, until
the display shows the “-:--” message.
•If the selected temperature program is not started within 10 seconds, the temperature screen will be
displayed.
The reactor has 2 predefined temperature profiles:
•105 °C (221 °F)
•150 °C (302 °F)
To choose from the available profiles:
•At start up, the display briefly illuminates all message segments then displays the heater block tempera-
ture. The current settings are displayed (reaction time and temperature) on the second line.
•Press the 105°C/150°C key to select the temperature program 105°C or 150°C.
OPERATING MODES
•Idle mode: the default mode. While in this mode the meter measures and displays the heater block
temperature, an IDLE message, the target temperature and the reaction time.
• Heating mode: activated by the START key. First, the reactor will heat to the desired temperature. When
the temperature is reached and it is stable, a beep signals the user that the vials can be inserted into the
heater block. Pressing the START key initiates the countdown timer. A beep tone is heard also at the end of
the heating cycle, the heater is off and the block starts cooling. The heating mode will be stopped anytime if
the STOP key is pressed.
The instrument shows messages when special conditions occur.
Temperature Low: Appears during the heating mode if the measured
temperature is lower than the set point. Wait for warm-up period.
Temperature high: Appears during the heating mode if the heater block
temperature is over the set point. Wait for cooling period.
Heating system malfunctions: Appears when the heating mode is ON
for more than 5 minutes and the temperature has not increased.
Prepare the reactor as follows:
• Place the reactor on a flat table. Do not place the instrument under direct sun light.
• Connect the reactor to a power outlet with ground. Verify the correct voltage and frequency are used.
See the label on the instrument.
• Turn the reactor ON using the power switch located on the rear panel. Wait until unit displays the
heater block temperature.
Hot surface: Appears when the heating block temperature is over 50 °C.
ERRORS AND WARNINGS
or
TEMPERATURE SELECTION
TIMER SELECTION
STARTUP

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•Turn the reactor on using the power switch located on the rear panel. The green POWER LED will be
illuminated.
•The display briefly illuminates all message segments and then displays the heater block temperature.
•Select the temperature according to the specific digestion procedure.
•Press the START button to start the heating mode. The yellow HEATING LED will illuminate.
•The display will show the current temperature of the heating block and the set temperature.
•When the heating block is above 50°C the red HOT LED will flash.
•The heater block warms for approximately 10-15 minutes, depending on the selected temperature.
During this period the heating indicator will remain ON continuously until block temperature is within
10°C of target temperature. The heater and the heating indicator will cycle OFF and ON, in order to
maintain the desired temperature.
•When the desired temperature is reached and has stabilized, a beep will signal that vials may be placed
in the reactor. At this time the vials can be inserted into the block and the timed digestion can be started.
Press START to start the timer.
The instrument displays the current temperature, and alternately on the second row, the set point value,
and the reaction time.
Notes:
• Use of the optional safety shield is strongly recommended
to protect the operator from splattering reagents in case
a vial should break.
• Do not place the reactor near a heating or cooling source.
Temperature stability could be affected.
• In order to allow the heat transmission from the block to
the liquid inside the tubes, the temperature of the metallic
block is a few degrees higher than the set value.
• During operation, the block temperature will be slightly different for an empty block or one full of vials.
If cold tubes are placed in the block, the temperature will decrease several degrees and a few minutes
will be required to recover as the tubes warm.
• An external stainless steel probe thermometer can be used to check the block temperature, by placing
it into the appropriate receptacle.
• After inserting vials, press START to start the timer.
• The heating indicator will cycle ON and OFF maintaining the constant temperature.
• After the time has elapsed, the message DONE is displayed. The heating element will turn OFF, and
the samples are ready to be removed from the reactor.
• To begin another digestion, press START. To modify the temperature program use the 105°C/150°C
key. To change the timer value, use ▲ and ▼ keys.
DIGESTION PROCEDURE

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ACCESSORIES
HI 151-00 Electronic thermometer (°C)
HI 151-01 Electronic thermometer (°F)
HI 740216 Test tube cooling rack (25 tube capacity)
HI 740217 Laboratory bench safety shield
MAINTENANCE
The reactor should be kept clean and any reagent spills should be wiped up immediately.
Do not touch the heater block unless you are certain it has cooled.
If some reagent accidentally spills into the heater block, disconnect power and allow the reactor to cool; then
remove all tubes and clean the block.
Should overheating occur, the reactor automatically shuts down, and all LED indicators turn off. Contact your
dealer or your nearest Hanna Service Center for maintenance.
FUSE REPLACEMENT
Replace fuse only with fuse of specified type and current rating.
• Turn the reactor off and disconnect the power supply.
• Unscrew the fuse holder by rotating it counterclockwise.
• Replace the fuse with one 4A fuse for -01 or one 2A fuse for -02 model.
• Replace the fuse holder before turning the reactor on.
HI 839800 is warranted for two years against defects in workmanship and materials when used for its
intended purpose and maintained according to the instructions.
This warranty is limited to repair or replacement free of charge.
Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered.
If service is required, contact your dealer. If under warranty, report the model number, date of purchase,
serial number and the nature of the failure. If the repair is not covered by the warranty, you will be
notified of the charges incurred.
If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization
Number from the Customer Service Department and then send it with shipment costs prepaid. When
shipping any instrument, make sure it is properly packaged for complete protection.
To validate your warranty, fill out and return the enclosed warranty card within 14 days from the date of purchase.
WARRANTY
Recommendations for Users
Before using these products, make sure that they are entirely suitable for your specific application and for the environment in
which they are used.
Operation of these instruments may cause unacceptable interferences to other electronic equipments, this requiring the operator
to take all necessary steps to correct interferences.
Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance.
To avoid damages or burns, do not put the instrument in microwave oven. Do not use or store the instrument in hazardous
environments.
Hanna Instruments reserves the right to modify the design, construction and appearance of its products
without advance notice.

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MAN839800R2 02/08
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