During operation
WARNING
Risk of burns from hot surfaces!
The motor can get hot during operation. It may cause burns.
- Allow the motor to cool down to ambient temperature after switching it off.
CAUTION
Incorrect operation can cause material damage!
The propeller must always be immersed during operation. If the fluid level drops below the required immersion level, switch off the mixer! We therefore recommend installing a level monitoring device for applications where the fluid level fluctuates significantly!
NOTICE
Observe motor instructions!
For more information, read and comply with the separate motor instructions.
During operation, observe the locally applicable regulations on the following topics:
- Workplace safety
- Accident prevention
- Handling electrical machines
Strictly comply with the personnel responsibilities specified by the operator. All personnel are responsible for ensuring compliance with responsibilities and regulations!
Check the following points at regular intervals:
- Operating voltage*
- Frequency*
- Current consumption between individual phases*
- Voltage difference between the individual phases*
- Max. switching frequency*
- Minimal immersion in water of the propeller
- Quiet/low-vibration running
*Tolerance specifications as per manufacturer’s instructions!
Increased current consumption
Depending on the fluid and the flow, the current consumption may vary slightly. If current consumption is elevated for a longer period, this indicates a change in conditions and will lead to increased wear of the mixer. The cause for a change in conditions could be:
- Propeller blade setting angle too steep. Check settings and adjust if necessary.
- A change in the viscosity and density of the fluid.
- Insufficient mechanical pre-cleaning, e.g. fibrous and abrasive content.
- Non-homogeneous flow conditions due to fixtures or deflections in the operating space.
- Vibrations due to blockage of the basin inlet/outlet and draining, incorrect air intake (aeration) or the combined effect of several mixers.
Check system configuration and take counter-measures. Contact customer service for further assistance.