IKA MINISTAR digital User manual

MINISTAR digital

98
Device setup
/// MINISTAR digital
1Operator panel and display
2Chuck
3Extension arm
4Power socket
5USB interface
6Stirring shaft cap
/// What you should watch out for
Attention! ( )
6
5
3
2
4
1

1110
Safety instructions
/// Explication of warning symbols
Indicates an (extremely) hazardous situation, which,
if not avoided, will result in death, serious injury.
Indicates practices which, if not avoided,
can result in equipment damage.
!
Indicates a hazardous situation, which, if not avoided,
can result in death, serious injury.
Indicates a potentially hazardous situation,
which, if not avoided, can result in injury.
/// General information
› Read the operating instructions in full before starting up and follow
the safety instructions.
› Keep the operating instructions in a place where it can be accessed by everyone.
› Ensure that only trained staff work with the device.
› Follow the safety instructions, guidelines, occupational health and safety and
accident prevention regulations.
Danger! ( )
Please pay attention to the dangerous parts of the equipment in device setup.
Beware of the risk of:
› flammable materials
› glass breakage as a result of mechanical stirring power
Caution! ( )
Wear your personal protective equipment in accordance with the hazard category
of the medium to be processed, there is a risk of:
› splashing of liquids
› projectile parts
› body parts, hair, clothing and jewelry getting caught
The device must only be used in a technically perfect condition.

1312
/// Device setup
Danger! ( )
Users must make sure that the standby key of the IKA device can be accessed
immediately, directly and without risk at any time. If installation or positioning
cannot ensure this access at all times, an additional EMERGENCY STOP switch
that can be easily accessed must be installed in the work area.
Warning! ( )
Ensure stable assembly. The vessel used for stirring must be secured.
Use stirring shaft protective equipment!
›Set up the stand in a spacious area on an even, stable, clean, non-
slip, dry and fireproof surface.
›Remove the chuck key from the chuck before turning on the device.
› Place the power supply outside the working area of the device.
› Avoid knocking and impacting on the lower end of the shaft and the chuck
gear teeth. Even minor, invisible damage can lead to imbalance and uneven
shaft action.
› All screw connections must be properly tightened.
› The high torque developed by the device requires particular care in the choice
of stand, cross sleeve and anti-rotation element for the agitating vessel.
/// Working with the device
Danger! ( )
› Do not use the device in explosive atmospheres, it is not EX-protected.
› With substances capable of forming an explosive mixture, appropriate safety
measures must be applied, e.g. working under a fume hood.
› To avoid body injury and property damage, observe the relevant safety and
accident prevention measures when processing hazardous materials.
› The device is not suitable for hand-held operation.
› Do not touch rotating parts during operation!
Warning! ( )
Pathogenic materials must only be processed in closed vessels under a suitable
fume hood. If you have any questions, please contact IKA application support.
The operation of a free rotating shaft end is prohibited. Therefore, for safety reason,
only insert through the stirring tool over the upper edge of housing at standstill.
Caution! ( )
Make certain that the unit is set at the lowest speed before commissioning; oth-
erwise, the unit will begin running at the speed set in last operation. Gradually in-
crease the speed. Please observe the max. permitted speed for the stirring element.
Never set higher speed.
Covers or parts that can be removed from the device without tools must
later be refitted to ensure safe operation. This will prevent the infiltration
of foreign objects, liquids and other contaminants.

1514
› Imbalance of the output shaft, the chuck and in particular the stirring tools
can lead to uncontrolled resonant vibrational behavior of the device and the
whole assembly. Glass apparatus and stirrer containers can be damaged or
shattered by this. It can cause injury to the operator, also can damage the
rotating stirring tool. In this case exchange the stirring tool for one without
imbalance or remedy the cause of the imbalance. If there is still imbalance, re-
turn it to the dealer or the manufacturer along with a description of the fault.
› There may be electrostatic activity between the medium and the output
shaft which could cause a direct danger.
› Never operate the device with the stirrer tools rotating freely. Ensure that
parts of the body, hair, jewelry or items of clothing cannot be trapped by
the rotating parts.
› Pay attention when setting the speed to any imbalance of the stirrer tools
and possible spraying of the medium to be stirred.
› Ensure that the stand does not start to move.
› Only process media that will not react dangerously to the extra energy pro-
duced through processing. This also applies to any extra energy produced in
other ways, e.g. through light irradiation.
Reduce the speed if:
› the medium splashes out of the vessel because the speed is too high,
› the device is not running smoothly,
› the device begins to move around because of dynamic forces,
› an error occurs.
/// Accessories
› Protect the device and accessories from bumping and impacting.
› Check the device and accessories beforehand for damage each time when
you use them. Do not use damaged components.
› Safe operation is only guaranteed with the accessories described in the
”Accessories” section.
› Must disconnect the power before changing stirring element and fitting
allowed accessories.
/// Power supply / Switching off the device
If the device is operated too long in overload or if the ambient tem-
perature is too high, the device switches off permanently.
› Disconnecting the device from the power outlet only works by removing the
main cord from the socket.
› The device must only be operated with the original power supply unit.
› The outlet for the power supply must be easily accessible.
› After an interruption in the power supply during a stirring process, the device
does not restart automatically.
› The device must only be opened by trained technicians, even during repair.
The device must be unplugged from the power supply before opening. Live
parts inside the device may still be live for some time after unplugging from
the power supply.
/// Disposal
The device must be disposed of in accordance with national regulations.

1716
Unpacking
/// Scope of Delivery
Unpack the device carefully. Any damage should be notified immediately to
the shipping agent (post oce, railway network or logistics company).
Scope of Delivery
› MINISTAR digital overhead stirrer
› power supply
› extension arm
› hexagonal socket screw
› hexagon socket offset screw key
› shaft protector R 300 (with 2 fasten screws)
› chuck key
› USB cable
› user guide
› warranty card
MINISTAR control Warranty
+
++
MINISTAR 20
+
++ +
Intended use
/// Basics
Use
› For mixing / stirring liquids from low to medium viscosities with various
stirring tools.
›Stand device (chuck points down)
Range of use (indoor use only)
› Laboratories
› Pharmacies
› Universities
› Schools
This device is suitable for use in all areas (EMC class A and B).
The safety of the user cannot be guaranteed:
› if the device is operated with accessories that are not supplied or recom-
mended by the manufacturer.
› if the device is operated improperly or contrary to the manufacture’s
specifications.
› if the device or the printed circuit board are modified by third parties.

1918
Useful information
/// Stirrer
The stirring device is suitable for continuous operation. The motor current is
limited electronically. The device has an anti-stall and anti-overload system.
If a fault occurs, a safety circuit immediately switches off the motor perma-
nently. The device starts with the last settings made.
Speed
/// Speed – normal operation
Speed - regulated (no variation in speed):
The speed is monitored and regulated by processor controlled. The target
speed is constantly compared with the actual rotation speed value of the
output shaft and variations corrected. This guarantees a constant speed even
if the viscosity of the substance being stirred changes.
Fluctuations in mains voltage within the permitted tolerance range have no
effect on the quality of regulation and constancy of speed.
The speed is set using the front knob. During normal operations the speed
value on the display corresponds to the speed of the output shaft in revolu-
tions per minute (rpm).
/// Speed – overload operation
When solid or semi-viscous substances are added, the stirrer can be run for a
brief period at 130% its rated power. When running in the overload range (for
instance if the viscosity has increased at a particular stage of the process) the
speed will reduce to a degree sucient to keep the torque on the stirrer shaft
within the rated torque of the device.
Overload status 1
The device is already running within the overload range, however, the actual
speed does not match the set speed. This condition is maintained as long as
neither the motor current nor the device temperature exceeds their permissible
limit value. Display symbol: Blinking of the target speed.
Overload status 2
The device stop at a load above 130 % of the nominal torque.
Message in the display (see “Error codes” section).
/// Output shaft
Caution! ( )
Please see section “Safety instructions“!
The clamping chuck and output shaft permit clamping IKA recommend stirrer
tools (see section “Permitted IKA Stirrer tools“). The output shaft is designed as
a hollow shaft and the opening on the top side of the housing is closed with
a plastic cover. When the stirrer cover is opened, it is possible for stirring shaft
to be pushed out over the top edge of the housing at standstill, e.g. during
changing container.
For safety reason, the stirrer cover must be pushed back into the opening of the
housing so that it is properly closed. This is the only way to ensure that working
with the unit is safe and that media cannot enter the device.

20
Operator panel and display
/// Operation
rpm
A
C
B
AStandby key
Device switches on / enters standby
(no disconnection from the power supply network).
BDisplay Display the speed value.
CControl knob
(rotating / pressing)
Set the speed by rotating.
Start / stop the stirrer function by pressing.
21
Assembly
/// Assembling the extension arm to the overhead
stirrer
Stirrer
Extension arm
Hexagonal socket screw
Hexagon socket
offset screw key
Ensure that the extension arm is fitted securely.
Vibration may cause the screw to become loose. It is therefore necessary for
safe use to regularly check that the extension arm is attached securely. Tighten
the hexangular bolt as required.

2322
/// Assembling the overhead stirrer to the stand
Cross sleeve
Extension arm
Stand
Screw bolt
Check that the stirrer is held in position firmly prior to each use and also at regular inter-
vals. The position of the stirrer must only be adjusted when the equipment is stationary
and the power supply is disconnected.
/// Assembling the stirring element using the chuck
Chuck
Stirring element
Chuck key
Warning! ( )
The stirring element must only be changed when the equipment is stationary and the
power supply is disconnected.
/// Assembling the stirring shaft protector
Stirrer
Screw
R 300
/// Assembling the mixing vessel to the stand
Clamping bolt
Stand
Vessel
Clamping band
Strap clamp

24
Commissioning
/// Start-up
Secure the device to a stable stand with a cross sleeve.
The stirring vessel must always be securely fixed for safety reasons. You must also ensure
that the mounting device (stand) is set up in such a way that it is not liable to topple and
does not start to move during the stirring procedure.
If these conditions have been met, the machine is ready for operation when the mains
plug is plugged in. If these conditions are not met, safe operation is not guaranteed and
the machine could be damaged.
Observe the ambient conditions (temperature, humidity, etc.) listed under “Technical Data”.
The AC adapter is suitable for 100 VAC to 240 VAC.
Switching on/off:
1. After connecting the power to the device or touching the standby key (A) more than 1
second, the device is switched on. Following screens appear:
2. After that, the following screen appears automatically.
25
Maintenance and cleaning
/// Cleaning
The device is maintenance-free. It is only subject to the natural wear
and tear of components and their statistical failure rate.
For cleaning disconnect the main plug!
Use only cleaning agents which have been approved by IKA to clean IKA devices.
Dye isopropyl alcohol
Construction material water containing tenside / isopropyl alcohol
Cosmetics water containing tenside / isopropyl alcohol
Foodstuffs water containing tenside
Fuel water containing tenside
Dirt Cleaning agent
For materials which are not listed, please request information from
IKA application support. Wear protective gloves during cleaning the devices.
Electrical devices may not be placed in the cleansing agent for the purpose of
cleaning. Do not allow moisture to get into the device when cleaning. Before
using another than the recommended method for cleaning or
decontamination, the user must ascertain with IKA that this method
does not destroy the device.
/// Spare parts order
When ordering spare parts, please give:
› machine type
› serial number, see type plate
› item and designation of the spare part,
see www.ika.com, spare parts diagram and spare parts list
› software version
3. Then, the device is ready for operation.
4. After switching off the device by touching the standby key (A) more than 1 second,
following screen appears:
Software version
Self test screen
Device identification
Last speed setting
Setting speed:
› Ensure the speed set is suitable for the test medium selected. If in doubt, set the speed
to the lowest speed (counterclockwise direction) by rotating the control knob (C). Press
the control knob (C) to start or stop the stirring. During running, the standby LED blinks
to indicate the running status.
Standby LED

/// Repair
Please send in device for repair only after it has been cleaned and is free
from any materials which may constitute a health hazard.
For repair, please request the “Decontamination Certificate” form IKA or use the
download printout of it from IKA website: www.ika.com.
If you require servicing, return the device in its original packaging. Storage packag-
ing is not sucient. Please also use suitable transport packaging.
27
E 4
Cause › motor blockage or overload
Effect › motor off
Solutions › disconnect the device from the power supply
› decrease the load on the motor and restart device again
E 8
Cause › speed sensor fault or overload
Effect › motor off
Solution › disconnect the device from the power supply
If the actions described fails to resolve the fault or another error code
is displayed then take one of the following steps:
› Contact the service department.
› Send the device for repair, including a short description of the fault.
E 2
Cause › hardware driving error
Effect › motor off
Solution › contact the service department
E 3
Cause › temperature inside of the device is too high
Effect › motor off
Solution › switch off the device and allow it cool down
Error code | Cause | Effect | Solution
Error codes
/// Troubleshooting correctly
If an error occurs, the fault is shown by an error code on the screen.
Proceed as follows in such cases:
› Disconnect the device from the power supply.
› Carry out corrective measures.
› Restart device.
26

Warranty
/// Regulations
In accordance with IKA warranty conditions, the warranty period is 24 months.
For claims under the warranty please contact your local dealer. You may also
send the machine direct to our factory, enclosing the delivery invoice and giving
reasons for the claim. You will be liable for freight costs.
The warranty does not cover worn out parts, nor does it apply to faults resulting
from improper use, insucient care or maintenance not carried out in accor-
dance with the instructions in this operating manual.
Accessories
/// An overview
General accessories
› R 1825 Plate stand
› R 1826 Plate stand
› R 1827 Plate stand
› R 182 Cross sleeve
› RH 3 Strap clamp
› R 300 Stirring shaft protection (with 2 screws)
› FK 1 Flexible coupling
› USB 2.0 cable A – micro B
See more accessories on www.ika.com.
29
Permitted IKA stirrer tools
/// An overview
Propeller stirrer
› R 1342 max. speed (rpm) ≤ 2000
› R 1381 max. speed (rpm) ≤ 2000
› R 1382 max. speed (rpm) ≤ 2000
Propeller stirrer, PTFE
› R 1389 max. speed (rpm) ≤ 800
Turbine stirrer
› R 1311 max. speed (rpm) ≤ 2000
› R 1312 max. speed (rpm) ≤ 2000
Dissolver stirrer
› R 1300 max. speed (rpm) ≤ 2000
› R 1303 max. speed (rpm) ≤ 2000
Centrifugal stirrer
› R 1352 max. speed (rpm) ≤ 2000
Anchor stirrer
› R 1330 max. speed (rpm) ≤ 1000
See more permitted stirrer tools on www.ika.com.
28

Technical data
/// MINISTAR digital in detail
Technical data MINISTAR digital
MINISTAR
20 digital | 40 digital | 80 digital
Speed range under nominal load 0 / 50 ... 2000 rpm 0 / 50 ... 1000 rpm 0 / 50 ... 500 rpm
Speed adjustment Stepless
Speed display LED
Speed setting accuracy ± 1 rpm
Speed measurement deviation Speed < 300 rpm: ± 3 rpm
Speed > 300 rpm: ± 1 %
Max. torque at stirrer shaft 20 Ncm 40 Ncm 80 Ncm
Max. stirring quantity (water) 15 l 25 l 50 l
Max. viscosity 10000 mPa•s 30000 mPa•s 60000 mPa•s
Interface USB
Permitted on time 100 %
Nominal voltage 24 VDC
Max. current 2900 mA
Max. input power 69 W
Max. output power at stirring shaft 42 W
IP code according to EN 60529 IP 54
Contamination level 2
Protection at overload motor current limitation
Ambient temperature 5 ... 40 °C
Ambient humidity (rel.) 80 %
Drive Brushless DC-Motor
Clamping chuck-clamping range 0.5 ... 8 mm
Hollow shaft internal diameter 8.5 mm
Extension arm (Ø ×L) 13 × 160 mm
Dimensions (W ×D ×H)
(without extension arm) 70 × 147 × 193 mm
Weight (with extension arm
and clamping chuck) 1.56 kg 1.72 kg 1.72 kg
Operation at a terrestrial altitude max. 2000 m
31
Power supply
Input
100 ... 240 VAC
1.3 A
50 / 60 Hz
Output 24 VDC
90 W
Protection class I
30