6.2.4 Frequency inverter operation
DANGER
Operation outside the permitted frequency range
Explosion hazard!
▷
Never operate an explosion-proof submersible mixer outside the specified
range.
Frequency inverter operation of the submersible mixer is permitted in the frequency
range from 25 to 50 Hz. In biogas applications, frequency inverter operation is
permitted in the frequency range from 30 to 50 Hz.
6.3
Shutdown/storage/preservation
6.3.1 Measures to be taken for shutdown
WARNING
Fluids posing a health hzard
Hazardous to persons and the environment!
▷
Submersible mixers used in fluids posing a health hazard must be
decontaminated.
▷
Wear safety clothing and a protective mask, if required.
▷
Observe all legal regulations on the disposal of harmful substances.
WARNING
Submersible mixer started up inadvertently
Risk of injury by moving parts!
▷
Always make sure the electrical connections are disconnected before carrying
out work on the submersible mixer.
▷
Make sure that the submersible mixer cannot be started up accidentally.
The submersible mixer remains installed
DANGER
Persons entering the tank
Electric shock!
▷
Never start up the submersible mixer when there are persons inside the tank.
WARNING
Hands, other body parts, or foreign objects in the propeller or propeller intake area
Risk of personal injury! Damage to the submersible mixer!
▷
Never place your hands, other body parts or foreign objects into the propeller
or propeller intake area.
1. Start up the submersible mixer regularly once a month or once every three
months for approximately one minute during prolonged shutdown periods.
This will prevent the formation of deposits on the surface of the submersible
mixer.
The submersible mixer is removed from the tank and stored
✓
All safety regulations are observed.
1. Clean the submersible mixer.
2. Carry out maintenance work (
Follow the maintenance instructions (
6 Commissioning/Start-up/Shutdown
28 of 60
Amaprop®
Goodnal STP ST041 Biological Treatment (KSB Amaprop Installation and Operating Manual) Vendor Manual
Q-Pulse Id VM386
Active 29/10/2013
Page 28 of 60
