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Motor does not work

No voltage in the mains or no phase.

Check voltage.

Improperly fixed feeding cover.

Fix correctly.

Machine overheated.

Wait a few minutes.

Electric installation damage.

Inspect and repair.

Damaged motor.

Repair or replace.

Operation is too noisy

Damaged output shaft bearings.

Disassembly the unit and replace bearings.

Faulty shredding

Blunt or damaged shredding cutters.

Sharpen or replace.

Correct operation

The red LED is off. The white LED is on.

No second or third phase, phase reversal, asymmetry

The red LED blinks rapidly. The white LED is off.

Lack of simultaneous Hall sensors operation in the group

The red LED blinks shortly. The white LED is off.

Motor thermal protection error (70°C, hysteresis 15°C)

The red LED is permanently on. The white LED is off.

7.   Cube set (fig 12)

As an option MKJ2-250.1 or MKJ2-250.2 may be equipped with an attachment making it possibile 

to cube food with cube dimmensions 10 x 10 x 10, 15 x 15 x 10, 20 x 20 x 10 or 7.5 x 7.5 x 10. The attach-
ment includes: 

Disc with cutters in a form of a mesh being a fixed element installed on the ring located 
inside the trough. This disc is fix as the first element. The lower mesh disc ring must be ali-
gned by means of the chamfers with the same chamfers as in the ring located in the trough. 
However, attention must be paid that the part of the disc equipped with mesh cutters is 
located on its right side (fig.13). No locking device for the disc is neccesary as the alignment 
of the mesh disc with the trough ring protects the disc against rotation and sliding into 
the feeding throat. Moreover, during the machine operation, the rotation disc presses the 
mesh disc to the trough bottom. 

The rotating element with two fixed cutters which cut off and transfer diced vegetables is 
fixed on the output shaft, similarly to other shredding discs. This element is fixed after the 
mesh disc is installed. 

Due to the fact that operations of the cutting machine with the dicing attachement imposes the highest 

load on the drive (in comparison with slicing or cutting int chips or flakes), frozen or intensively chilled products 
should not be shredded. The dicing set is removed by complying with the assembly procedure in reverse order. 
It is recommended to use a puller to remove the rotating cube. The dicing disc must be cleaned after food resi-
dues and removed from the mesh. Next,it must be rinsed with a water jet and dried .

The set comes with  the second scraper (shorter) adapted to mate with dicing set. While in the case of 

dicing soft vegetables helps shield mesh from a set to dicing, in the case of dicing vegetables in the softened 
state is essential. Without it, the dicing is not possible, and instead the cubes we receive vegetable pulp.

8.   Activities after completing the shredding process  

Every day, after completing the shredding process, the following actions must be taken: 
-  deactivate power supply by means of the main switch (red button) and remove the power 

supply cable plug from the socket 

-   remove the feeding cover and the shredding disc
-   thoroughtly wash the machine (in particular its trough) with hot water and wipe to dry 
-   wash the feeding cover and the shredding disc with hot water 
-   clean the output shaft and the openings in the shredding disc which allow for fixing them on 

the shaft so as to facilitate disc replacement 

-   wash knives with warm water and wipe the cleaning of dry and rub olive
-   set the shredding cutters on the base 
-   parts of the machine protect from accidental damage.
In order to protect the machine interior against vegetable juice leaks, its leak  tightness is improved, 

but only in the trough area. Do not wash the machine enclosure with a water jet or pressurised water stream. 
Do not insert the enclosure containing electric elements in a container with water. 

9.   Methods of fixing operating faults 

See below for the error codes indicated by red and white LEDs for the regulated controller in MKJ2-250.1:

See below for the error codes indicated by red and white LEDs for the regulated controller in MKJ2-250.2:

After indication of any fault, the motor is stopped and may be restarted after the fault is repaired and 

the GREEN button (START) is pressed.

Correct operation

The red LED is off. The white LED is on.

Interrupted motor operation due to voltage interruption

The red LED blinks rapidly. The white LED is off.

Error reported by the inverter

The red LED blinks in long intervals. The white LED is off.

Lack of simultaneous Hall sensors operation in the group

The red LED blinks in long intervals. The white LED is off.

Motor thermal protection error (70°C, hysteresis 15°C)

The red LED is permanently on. The white LED is off.

Figure 13  Fixing the cube set

Rys. 13a)  Rotatable cube element 

 

with the puller 

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