11
6. Error and warning messages
When the display shows an error message, the motor stops automatically. To restore the functionality of the instrument,
proceed as follows:
•
Turn the unit off using the main switch
•
Use the suggestions described in the column “Solution”
•
Turn the unit on
Code
Cause
Solution
The m
otor doesn’t start or not reach
the set speed
•
Check that there are no locks in the dispersing tool or structure
High internal motor temperature
•
Check that there are no obstructions on the air vents for internal
ventilation.
•
Check that there are no locks in the dispersing tool or structure
•
Reduce speed or load
Motor overload
•
Check that there are no locks in the dispersing tool or structure
•
Reduce speed or load
High internal temperature
•
Check that there are no obstructions on the air vents for internal
ventilation.
•
Check that there are no locks in the dispersing tool or structure
•
Reduce speed or load
Internal hardware error
•
Contact service department
The instrument does not detect the
dispersing tool
•
Check that the dispersing tool is correctly inserted in the disperser
and firmly fixed with the knob (B)
Speed variation too high
•
Check that there are no locks in the dispersing tool or structure
If an error persists on the display, please contact VELP Scientifica’s technical service department.
7. Maintenance and cleaning
No routine or extraordinary maintenance is necessary for the unit. The maintenance is foreseen only on the dispersing tools
as described in Chapter 5.
Cleaning
Disconnect the unit from the power supply and use a cloth dampened with a non-flammable non-aggressive detergent.
During cleaning operations, prevent water and humidity residues from entering the unit.
Repair
Repairs must be carried out by authorized Velp personnel only.
The transport of the instrument by freight forwarders, couriers or others must be carried out using the original shockproof
packaging. Follow any instructions on the original packaging (e.g., palletizing).
It is the responsibility of the user to properly decontaminate the unit in case of hazardous substances remaining on the
surface or interior of the device. If in doubt about the compatibility of a cleaning or decontamination product, contact the
manufacturer or distributor.