ScienTECH 720 User manual

4-INS-720
INSTALLATION,
OPERATION AND
CARE MANUAL
REMEMBER TO COMPLETE THE ONLINE
WARRANTY REGISTRATION
www.scientific.co.za

THANK YOU FOR PURCHASING
A SCIENTECH PRODUCT!
Pharmaceutical Physics
Power Generation
Special Metals
Sugar
Water
Zoology
Other (Specify):
REGISTER ONLINE TODAY
Register your warranty on-line at www.scientific.co.za today and learn how to get
the best out of your Scientech product.
NO WEB ACCESS?
If you do not have access to the Web, register by completing this form and Email it
to the Scientific head office in South Africa. Email: [email protected]
Company
Name
Surname
Telephone
Cellphone
Email Address
Country
Postal address
Scientech products purchased
Product Code (see box label)
Serial number (see back of machine)
ONLY COMPLETE IF YOU DO NOT HAVE WEB ACCESS
INTENDED USE
Agriculture
Automotive
Biochemistry
Botony
Chemistry
Cosmetics
Electronics
Food
Genetics
Industrial
Medical
Microbiology
Mining
Nuclear
Paper/Packaging
Petrochemical
ALL SCIENTECH EQUIPMENT COMES WITH A ONE
YEAR WARRANTY ON COMPONENTS AND
DEFECTIVE WORKMANSHIP
QUALITY
GUARANTEED
ALL SCIENTECH EQUIPMENT COMES WITH A ONE
YEAR WARRANTY ON COMPONENTS AND
DEFECTIVE WORKMANSHIP
QUALITY
GUARANTEED
www.scientific.co.za

OVERHEAD STIRRER 20 LITRE
INSTALLATION OPERATION AND CARE OF
OVERHEAD STIRRER
MODELS: 720
4-INS-720
LIMITED WARRANTY
The manufacturer guarantees that this unit is free from defect in
materials and workmanship when it leaves the factory and
undertakes to replace or repair the unit if it proves defective in
normal use or during servicing for a period of 1(one) year. The date
of original installation and is for the benet of the original purchaser
only. The liability under this warranty is limited to repairing the
defective unit or any part of the unit provided it is sent carriage paid
to an authorized dealer. All other Warranties ,expressed or implied
, statutory or otherwise, including without limitations any implied
Warranty of Merchantability or tness for purpose are excluded .The
Seller shall in no event be liable for direct,indirect or consequential
damages in connection with the products.
This unit is at all times to be used according to the instruction manual
and for its normal purpose.
This Warranty is not effective if damage occurs because of accident,
carelessness,improper installation,lack of proper set-up,supervision
when required or if the equipment is installed or operated in any
manner contrary to the installation and operating instructions. In
these cases,repairs will be made at a reasonable cost. Work
performed by unauthorized personnel or unauthorized service
agencies voids this Warranty.

THESE INSTRUCTIONS MUST BE FOLLOWED FOR US TO
GUARANTEE OUR FULL SUPPORT OF YOUR CLAIM FOR
PROTECTING AGAINST LOSS FROM CONCEALED DAMAGE.
THE FORM FOR FILING SUCH A CLAIM WILL BE PROVIDED
BY THE CARRIER.
UNPACKING
Unpack the product and check for any damage incurred during
transit. This should be reported to the responsible carrier, railway or
postal authority, and a request for a damage report should be made.
GENERAL INSTALLATION AND OPERATION INSTRUCTIONS
1. Position the overhead stirrer on a clean non slip level surface.
2. Gradually increase or decrease the speed if there is any
movement in the the liquid conatainer.
3. Do not operate the unit in explosive atmospheres.
4. Do not use ammable or hazardous substances in these units.
OPERATING INSTRUCTION
The unit is designed for mixing liquids in schools, laboratories or
commercial factories. It s not intended for domestic use.
Setting the rotation speed.
1. Plug the power supply into the mains power supply.
connect the power supply cord into the socket provided on the
left side of the unit.
2. Switch the rocker switch mounted on the front panel to the “on”
position.
3. Press the rotation speed knob once, the illuminated display will
show ” - SP - “. rotate the knob clock wise to increase the speed,
the speed value will be displayed. Press the knob again to lock
the speed.
110

29
Setting the rotation speed cont.
4. The display will indicate three lines. The set value speed
indicated in small digits below the larger current speed digits.
At the bottom right the status i.e RUN or STOP.
534
534
Actual speed r.p.m
Set speed value r.p.m.
RPM
Run / Stop status
5. To start the stirring motion, press the start / stop button. The
spindle will start turning and increase in speed until the set
r.p.m. is reached. The display will show “ ►RUN...”
6. To stop the stirring motion, press the start / stop button. The
spindle will reduce speed and stop.
The display will show “ ►STOP...”
ELECTRICAL CONNECTION INFORMATION
MODEL CAPACITY
(Litres)
VOLTS
(V /Hz)
POWER
(W)
SPEED RANGE
(R.P.M)
720 20 240/50 60 100 - 2500 (+1)

DO NOT USE WITH FLAMMABLE OR HAZARDOUS
LIQUIDS.
3 8
IT IS ESSENTIAL TO MAKE SURE THAT THE INCOMING
VOLTAGE IS THE SAME AS THE RATED VOLTAGE OF
THE UNIT AS FOUND ON THE SERIAL PLATE. THE
SERIAL PLATE IS LOCATED AT THE REAR OF THE UNIT
ADJACENT TO THE INCOMING CABLE ENTRY.
CLEANING
1. Always ensure that the unit is disconnected from the main
power supply before cleaning.
2. This unit should not be cleaned with a water jet or immersed
in water. Use only a damp cloth or sponge dipped in
soapy water.
3. Wipe off the unit with a dry cloth and wait at least a half
an hour before re-connecting to the main power outlet.
OVERHEAD STIRRER
MODEL CODE 720
ITEM
No.
1STEEL BASE
2IMPELLAR SHAFT
3SPEED CONTROL KNOB
4PCB SWITCH START STOP
5ROCKER SWITCH
6PCB SPEED DISPLAY
7FASCIA PANEL
8PCB MAIN CONTROL
9POWER SOCKET
10 STEEL CHASSIS
11 ADJUSTER CLAMP KNOB
12 REAR CHROME BAR
13 ADUSTER CLAMP BODY
14 TOP VERTICAL CHROME BAR
15 POWER SUPPLY
16 BOTTOM VERTICAL CHROME BAR
17 SMALL RUBBER FEET
18 CHUCK
19 MOTOR SHAFT SPACER
20 MOTOR
21 BODY
Description
PARTS LEGEND
MODEL: OVERHEAD STIRRER
MODEL CODE: 720

47
SAFETY
READ ALL INSTRUCTIONS BEFORE USE. FAILURE TO
FOLLOW THESE PRECAUTIONS COULD RESULT IN INJURY TO
YOURSELF AND OTHERS
1. Use the Overhead stirrer on an individual 15A mains outlet
only. DO NOT OVERLOAD THE CIRCUIT.
2. Ensure that the equipment and the power supply cord does not
come into contact with hot surfaces.
3. This unit is only to be used by properly trained laboratory staff.
4. If the supply cord is damaged, it must be replaced with a new
cord assembly available from the suppliers agent.
5. Use only earthed outlets matching the serial plate voltage.
6. Have equipment installed by a qualied personnel in accordance
with local codes and ordinances.
7. Use equipment in a at level position.
8. The equipment may be hot, even though the control panel is not
on.
9. Do not operate if equipment has been damaged or is
malfunctioning in any way.
10. These units are designed to run only on alternating current
(A.C.) DO NOT CONNECT TO DIRECT CURRENT (D.C)
EXLODED DIAGRAM DIAGRAM
MODEL: OVERHEAD STIRRER
MODEL CODE: 720
1 2 3
4
5 6
7
18 20 19
8 9
10
11 12
13
14 16 17
15
OVERHEAD STIRRER
MODEL 720
21

5 6
POSITIONING DIAGRAM
OVERHEAD STIRRER MODEL 720
Model 720 overhead Stirrer
820
380
200
WIRING DIAGRAM
MODEL: OVERHEAD STIRRER
MODEL CODE: 720