Hanna Instruments HI 921 User manual

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INSTRUCTION MANUAL
HI 921 AUTOSAMPLER
Revision 1.1
www.hannainst.com

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INSTRUCTION MANUAL

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INSTRUCTION MANUAL
Dear customer,
Congratulations on choosing a Hanna Instruments product.
This manual has been written for the HI 921 Autosampler.
Please read this Instruction Manual carefully before setting up the autosampler. This manual
will provide you with the necessary information to correctly set up the autosampler.
For information on the autosampler functinality see Chapter 12 in the HI 902 Potentiometric
Titrator Manual.
© 2015 Hanna Instruments
All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright
owner, Hanna Instruments Inc., 584 Park East Drive, Woonsocket, Rhode Island 02895, USA.

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INSTRUCTION MANUAL
Contents
INTRODUCTION ......................................................................................................5
UNPACKING.............................................................................................................5
SAFETY MEASURES.................................................................................................6
INSTALLATION DIAGRAM ......................................................................................7
SETUP ......................................................................................................................8
1. Install the Burette Dispensing Tube .................................................................. 8
2. Attach the Cable Carrier ..................................................................................9
3. Set Up the Dispenser Head ............................................................................ 10
4. Connect the Pump Tubes .............................................................................. 11
5. Install the Tray ............................................................................................. 12
6. Electrical Connections ................................................................................... 13
OPERATION ...........................................................................................................14
MAINTENANCE ......................................................................................................15
Upgrading Firmware ............................................................................................. 17
TECHNICAL SPECIFICATIONS ..............................................................................18
AUTOSAMPLER COMPONENTS .............................................................................19

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INSTRUCTION MANUAL
INTRODUCTION
The HI 921 Autosampler is designed automate a wide variety of potentiometric titrations in
conjunction with the HI 902C Automatic Titrator. The HI 921 allows users to perform high
speed analysis while obtaining accurate results with minimal user interference.
Sequence reports and individual titration reports can be transferred to a PC via a USB interface,
saved to a USB storage device or printed directly from the Titrator.
A barcode reader, balance, external monitor and keyboard can be attached for added
convenience.
The autosampler and the accessories are shipped in a single box containing:
ITEM QUANTITY
1. Autosampler 1 pc.
2. Control Panel 1 pc.
3. Tray Locking Screw 1 pc.
4. Titrant dispensing tube 1 pc.
5. Electrode Holder 1 pc.
6. Communication cable 1 pc.
7. BNC cable 1 pc.
8. Temperature Sensor 1 pc.
9. USB Memory Stick (HI 902 Software Update included) 1 pc.
10. Quick Start 1 pc.
11. Quality Certificate 1 pc.
See Autosampler Components on page 19 for pictures.
If any of the items are missing or damaged, please contact your sales representative.
NOTE:Save all packing materials until you are sure that the instrument functions correctly.
Any damaged or defective items must be returned in their original packing materials
together with the supplied accessories.
UNPACKING

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INSTRUCTION MANUAL
SAFETY MEASURES
The following safety measures must be followed:
1. Never connect or disconnect the pumps assemblies from the Autosampler and Titrator
when they are turned on.
2. Verify that the pumps and the attached tubing are assembled correctly.
3. Always check that the reagent and waste bottles are placed on a flat, stable surface and the
titration beakers are placed in the tray.
4. Always wipe up spills and splashes immediately.
5.Avoid the following environmental working conditions:
•Severe vibrations
•Direct sunlight
•Atmospheric relative humidity above 95% non-condensing
•Environment temperatures below 10 ° C and above 40 ° C
•Explosion hazards
6. Have the Autosampler serviced by qualified service personnel only.
7. Keep hands and objects clear of moving parts during operation.
In an emergency situation, the Autosampler can be stopped
immediately by pressing either of the illuminated Emergency Stop
buttons located at the top corners of the Autosampler tower. This
action will immediately deactivate motors and pumps.
To reset the emergency stop, press and hold both emergency
buttons for five seconds until the status lights turn from red to
yellow to green.

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INSTRUCTION MANUAL
INSTALLATION DIAGRAM
Rear View Front View
Side View

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INSTRUCTION MANUAL
1. Install the Burette Dispensing Tube
The dispensing tube is mounted on the right side of the burette. This tube needs to be
replaced with a longer one in order to reach the Autosampler.
To remove the dispensing tube follow these steps:
• Slide up the tube protector (3).
• Remove the tube lock (4) from the burette holder.
• Unscrew the fitting (2).
• Remove the tube.
To attach the new dispensing tube follow these steps:
• Insert the flat-shaped end of the dispensing tube into the valve outlet, and screw in
the fitting so that the highest of its 9 cuts stays vertically in the final position (2).
• Bend the tube up into the vertical position to enter the highest cut of the fitting (5).
• Put on the tube lock on the fitting (4).
• Slide down tightly the tube protector (3) into the dedicated gap of the tube lock.
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SETUP

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INSTRUCTION MANUAL
2. Attach the Cable Carrier
To attach the cable carrier remove the three (3) screws from the top rear panel (A). Align the
screw holes on the cable carrier (B) to the rear panel and replace the screws.

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INSTRUCTION MANUAL
3. Set Up the Dispenser Head
•Insert electrode, temperature sensor, stirrer, and aspiration tube (optional) into the dedicated
holes in the electrode holder. Push them down until they are in a stable position.
•Insert burette and auxiliary tubing into the appropriate holders.
•Close clips on cable carrier once all cables and tubing are run.

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INSTRUCTION MANUAL
4. Connect the Pump Tubes

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INSTRUCTION MANUAL
•Place the tray on the turntable with Beaker 1 under the dispenser. Make sure the turntable
mounting pins are aligned with the tray.
•Lock the tray in place with the locking screw. Do not over-tighten the locking screw!
5. Install the Tray

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INSTRUCTION MANUAL
•Connect the HI 902C titrator to the 5-pin threaded connector.
•Connect the control panel to the 4-pin threaded connector.
•Connect the overhead stirrer (optional) to the 4-pin mini-DIN connector.
•Connect a USB barcode reader (optional) to the USB slot.
6. Electrical Connections

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INSTRUCTION MANUAL
OPERATION
Status Lights
The status light serve as a visual indication of the current state of the Autosampler:
Green (steady): Idle, ready for commands.
Green (flashing): Running.
Yellow (steady): Firmware is updating.
Yellow (flashing): Paused, waiting for user action.
Red (flashing): Error.
Red (steady): Firmware corrupted. Autosampler initializing (first 3 seconds after power
on).
Control Panel
The control panel displays the current status of the Autosampler and can be used to manually
control the Autosampler while it is idle (green steady status lights).
/ :Move the dispenser head up/down.
/ :Rotate the turnable clockwise/counter clockwise.
- :Power the auxiliary pumps.
:Suspends/resumes automatic mode.

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INSTRUCTION MANUAL
Replacing Peristaltic Pump Tubing
Peristaltic pump tubing wears over time and will occasionally require replacement. To replace
tubing:
•Pull the clear plastic cover off of the pump (1).
•Remove the plastic rotor and tubing (2).
•Thoroughly grease the outside of the replacement tube and the rollers of the rotor.
•Wrap the replacement tubing around the rotor and press into the pump housing (3). The
tubing in contact with the rollers will need to be compressed with a finger in order to fit in
the housing.
•Replace the clear plastic cover.
MAINTENANCE

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INSTRUCTION MANUAL
WARNING! Turn off the Autosampler and disconnect from the Titrator before adding or
removing pumps! Failure to do so could cause damage to the pump and/or Autosampler.
Removing a Pump
•Remove the 4 screws holding the pump in the Autosampler tower (1).
•Pull the pump out (2) of the tower slightly so that the pump’s side cover can be removed
(3).
•Disconnect the pump electrical connection by holding down the connector release tab (4)
while pulling the connector away from the circuit board (5).
•Pull the pump out of the Autosampler tower.
•If the pump bay is no longer being used, replace the side and back covers and fasten with
the 4 screws.
Adding a Pump
Peristaltic pumps can only be connected to bay #1, #2, and #3. Membrane pump can only
be connected to bay #4.
•Remove the 4 screws holding side and rear covers of the pump bay.
•Insert the pump into the rear of the Autosampler tower.
•Once in the tower, pull the pump electrical connector out of the side of the tower. Push the
connector into the circuit board with the push-tab facing the outside of the tower.
•Replace the side cover. You will need to pull the pump out of the tower slightly.
•Fasten the pump in place with 4 screws.

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INSTRUCTION MANUAL
Upgrading Firmware
The HI 921 firmware can be upgraded via the USB connector. The current firmware version
is displayed on the control panel during boot-up and on the Autosampler Information screen.
To upgrade the firmware:
1. Load the upgrade file into the root directory of a flash drive. Firmware files are named
with the format “ 921v####.hex ”.
2. Power off the HI 921 Autosampler using the power switch, but leave the cable connected
to the HI 902 Titrator.
3. Insert the USB flash drive with upgrade file in the HI 921 USB slot.
4. While holding down both emergency stop buttons, turn on the HI 921 Autosampler.
Keep the buttons pressed until the status lights turn yellow. The control panel should
display the message “Upgrading FW, please wait…”. After this message appears, release
the buttons and wait upgrading operation to completed.
5. When the upgrade is complete, the status lights will turn green and the control panel will
display “Upgrade Complete”. Remove the USB flash drive.

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INSTRUCTION MANUAL
Electrode Holder Slots 3 x 12-mm Electrodes Slots
1 Temperature Sensor Slot
1 Aspiration Tube Slot
5 Multi - purpose Slots (titrant/reagent tubes)
1 Overhead Stirrer Slot
Temperature Sensor HI 7662-A (Included)
Stirrer Magnetic Stirrer (Built in)
Overhead Propeller Stirrer (optional)
Peristaltic Pumps Up to 3 (Slots 1, 2 & 3)
Diaphragm Pump One (Slot #4)
Peripheral Units USB Barcode Reader
Trays 16 beakers x 150 mL with Built-in RFID
18 beakers x 100 mL with Built-in RFID
Beakers ASTM short-form glass beakers, 100 & 150 mL
HI 920-060 (150 mL), Plastic beakers
HI 920-053 (100 mL), Plastic beakers
Control Panel Buttons for manual operation of tray
Manual operation of peristaltic or diaphragm pumps
2-line backlit display with status information
Enclosure Material ABS plastic and steel
Electrode Holder Material PVC
Tray Material ABS plastic and acrylic
Keypad Material ABS plastic and polycarbonate
Dimensions with tray 438 x 356 x 438 ( Width x Depth x Height)
Weight approx. 20 lbs (9 kg)
Operating Environment 10 to 40°C, up to 95% relative humidity
Storage Environment -20 to 70°C, up to 95% relative humidity
TECHNICAL SPECIFICATIONS

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INSTRUCTION MANUAL
AUTOSAMPLER COMPONENTS
Comunication Cable
HI 920-930
BNC Extension Cable (1 m)
HI 920-931
Reference Extension Cable
(1 m)
HI 920-932
16 Beaker Tray, 60 mm dia.
Single Row with RFID
HI 920-11660
18 Beaker Tray, 53 mm dia.
Single Row with RFID
HI 920-11853
Plastic Beaker for
HI 920-11660 (20 pcs.)
HI 920-060
Plastic Beaker for
HI 920-11853 (20 pcs.)
HI 920-053
Autosampler
HI 921 - XY
Control Panel
HI 920-921
Tray Locking Screw
HI 920-960
Electrode Holder
HI 920-310
Temperature Sensor
HI 7662-A
USB Memory Stick
HI 920-900
Titrant Dispensing Tube
(1.5 m)
HI 920-280

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INSTRUCTION MANUAL
Persitaltic Pump with
dispensing tubing
HI 920-101
Persitaltic Pump with
aspiration tubing
HI 920-102
Membrane Pump with
tubing
HI 920-111
Replacement Cap and
Rotor for Peristaltic Pump
HI 920-201
Tubing Set with plastic
dispensing tube for
peristaltic pump
HI 920-202
Tubing Set with stainless
steel aspiration tube for
peristaltic pump
HI 920-203
Roller Tube for peristaltic
pump (3 pcs.)
HI 920-204
Membrane Pump Complete
Tubing Set
HI 920-212
TYGON Tube (5 m)
HI 920-290
Overhead Stirrer
HI 920-301
Replacement Propellers
(3 pcs.)
HI 920-302
High Chemical Resistance
Propellers
(3 pcs.)
HI 920-303
Cable Chain
HI 920-320
25 mm x 7 mm Stir Bars
(10 pcs.)
HI 731319