background image

10

Exchanging and replacing the grinding tools

The edges of the blade are sharp. It should only be 
handled with protective gloves. 
Please observe the safety instructions. Note that when 

changing the tool directly after a grinding procedure, the pulverization tools are 
hot. The mill must first be allowed to cool off.
Before exchanging the pulverization tools, unplug the power cord.

Rotate the mill drive onto its head and push it into the grinding container with the 
head down (see figure 3).
Hold the rotor shaft securely in place with the curved single - head wrench by 
the flattened section underneath the pulverization tool. Loosen and remove the 
hexagonal nut (item 24) with the second single - head wrench and remove the 
blade or the beater.
Before assembling a new or another pulverization tool, make certain that all parts 
are clean. It does not matter which direction beaters and blades are installed in. 
Due to their double - sided operation, the two pulverization tools have a service 
life that is twice as long. If one side is dull or worn, you can use the other side by 
turning the beater or blade around.
After you have set the pulverization tool in place, tighten the hexagonal nut to 
finger tightness. To do this, use the tools as shown in figure 3.

WARNING

Malfunction and eliminating malfunctions

Malfunction display:

The malfunction display lights up if the grinding container has not been screwed in 
to the stop and the On/Off - switch has been pressed.
The malfunction display also lights up if the motor circuit breaker has been triggered 
and the On/Off - switch is pressed. The malfunction display alone does not indicate 
which of the two possible errors has occurred. As a rule, if the motor circuit breaker 
has been engaged, an elevated temperature has been detected on the mill housing.

Temperature and over-current protection:

The 

A 11 basic

 mill is protected from overload and / or overheating by a combined 

temperature and over current switch.
The motor circuit breaker turns itself back off automatically when the temperature of 
the mill is again in an acceptable range and the On/Off -switch has not been pressed. 
This may be after only a few seconds in the case of a short-term overload. If the mill 
has heated up a great deal after an extended period of operation, it may take up to 
30 minutes to cool off.
You should not press the On/Off - switch repeatedly during the cooling off - phase, 
because the motor circuit breaker is equipped with an auto - hold function that 
prevents the mill from starting up again if the On/Off - switch is pressed repeatedly. 
To determine whether the mill is ready to start up again, you should press the On/
Off - switch at intervals of from 5 to 10 minutes. If the malfunction display lights 
up again while the grinding container is screwed on, the temperature is still too hot 
(maximum cooling - off time 30 minutes at an ambient temperature of about 25 °C).
The 100-115V version of the A11 basic is additionally equipped with a circuit breaker. 
This turns the mill in case of sudden overload (motor blocks) from. If the cause of 
the fault has been eliminated (eg. too large feed size or too much material to be 
ground in the grinding bowl), the circuit breaker can again be without a waiting 
period with the supplied reset pin is turned on. For this purpose, the thin end of the 
pin is inserted into the membrane grommet  on the back of the A11 basic (above the 
power cord) to the stop. (see figure 6)

Summary of Contents for A11 basic

Page 1: ...Operating instructions EN IKA A11 basic ...

Page 2: ...on Maximale Füllhöhe Maximum filling height Fig 1 Fig 2 IKA A11 basic On Off Fig 3 20 Maximale Füllhöhe Maximum filling height Fig 5 Fig 6 On Off IKA A11 basic 22 9 8 24 14 13 20 19 11 Item Designation 8 Guard ring 9 O ring 11 Beater 13 Hexagonal nut 14 Pressure spring 19 O ring 20 Seal 22 Guide screw 24 Hexagonal nut ...

Page 3: ...3 STEP 2 Unscrew STEP 3 Remove STEP 4 Clean DRY WET Tools 2x 2x 1x STEP 1 Check Cleaning information IKA A 11 basic Note Prevent damage keep clean ...

Page 4: ...to all IKA S versions e g A 11 basic S 001 EN Safety instructions Explication of warning symbols DANGER CAUTION WARNING NOTICE Indicates an imminently hazardous situation which if not avoided will result in death serious injury Indicates a potentially hazardous situation which if not avoided can result in death serious injury Indicates a potentially hazardous situation which if not avoided can res...

Page 5: ...d it in place with both hands Only process samples that will not react dangerously to the extra energy produced through processing This also applies to any extra energy produced in other ways e g through light irradiation Beware of the risk of flammable materials Working with the device DANGER Do not use the device in explosive atmospheres it is not EX protected With substances capable of forming ...

Page 6: ...trade or industry The safety of the user cannot be guaranteed if the device is operated with accessories that are not supplied or recommended 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 Power supply switching off the device The voltage stated on the type plate must ...

Page 7: ...more than 50 capacity The mill must only be used in an upright position in this case must not be agitated or turned on its head Materials that are not listed above should only be reduced in the A 11 basic after confirmation from IKA especially if there is uncertainty about the danger of explosion dust explosion as a result of electrostatic charge NOTICE WARNING Unpacking Delivery scope A 11 basic ...

Page 8: ... grinding beaker Pour liquid nitrogen into the grinding beaker using a suitable Dewar vessel ensuring that the sample is completely covered or swimming in liquid nitrogen Only attach the drive once the nitrogen is completely vaporized otherwise high pressure can build up in the grinding chamber Please note that the mill feed heats up again extremely quickly during crushing it may reach room temper...

Page 9: ...y grinding material that adheres to the guard ring can be swept off on the guard ring into the grinding container with a cleaning brush no wire brushes Always remove any grinding scrap which gets into the interstice before using the appliance again see Maintenance and Cleaning section The grinding tools the grinding container and the rotor shaft may be hot Observe the safety instructions WARNING C...

Page 10: ...does not indicate which of the two possible errors has occurred As a rule if the motor circuit breaker has been engaged an elevated temperature has been detected on the mill housing Temperature and over current protection The A 11 basic mill is protected from overload and or overheating by a combined temperature and over current switch The motor circuit breaker turns itself back off automatically ...

Page 11: ...emove the grinding container If fragments of the grinding material have become stuck between the grinding tool and the guard ring do not remove them until after you have disconnected the power cord Eliminating malfunctions The mill does not start up Causes Power cord is not plugged into the socket correctly You did not push the On Off switch down far enough The grinding container is not screwed in...

Page 12: ...tion area can be cleaned with a cleaning brush If there is a heavy accumulation of dirt the grinding container can be cleaned in a dish washer If grinding dust is found in the middle section the area where pressure spring is located it can be blown out through the opening with compressed air If there is a heavy accumulation of dirt on the guard ring and the middle section can be disassembled as fo...

Page 13: ... matching opening in the middle section For the switch block to engage completely in place the drive section must be pushed into the middle section up to the lower stop While the drive sections is inserted about half way into the middle section the guide screws should be tightened Note The switch block must engage flush in the middle section in the assembled state This should always be checked and...

Page 14: ...ange of granularity What has been said before also applies here for example only 50 80 of the normally filling quantity are reduced more quickly the granularity of the final product is finer the range of granularity is smaller and the heating up of the grinding material is reduced Grinding process As the double beater is already immersed in the mill feed when the grinding beaker is being screwed o...

Page 15: ... beaker A 11 4 250 ml Rotor shaft Beater A 11 1 Cutter A 11 2 Beater A 11 3 Double beater A 11 6 Filling funnel A 11 7 Stainless steel 1 4571 outer shell fluoroplastic ETFE Stainless steel 1 4571 outer shell polycarbonate PC Stainless steel 1 4571 Stainless steel 1 4034 hardness approx 52 HRC Stainless steel 1 4112 hardness approx 55 HRC Stainless steel 1 4112 wolfram carbide coated core hardness ...

Page 16: ...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 insufficient care or maintenance not carried out in accordance with the instructions in this operating manual ...

Page 17: ...IKA Works Guangzhou Phone 86 20 8222 6771 eMail info ika cn POLAND IKA Poland Sp z o o Phone 48 22 201 99 79 eMail sales poland ika com USA IKA Works Inc Phone 1 910 452 7059 eMail usa ika net KOREA IKA Korea Ltd Phone 82 2 2136 6800 eMail sales lab ika kr BRAZIL IKA Brazil Phone 55 19 3772 9600 eMail sales ika net br VIETNAM IKA Vietnam Company Limited Phone 84 28 38202142 eMail sales lab vietnam...

Reviews: