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BA 9213 en 03/2012
5.2.7.2 Starting when the bucket wheel is at a standstill
The bucket wheel must have reached equilibrium.
• Release brake.
• Start pump.
• After 10 minutes start main motor and/or auxiliary motor.
5.2.7.3 Changeover from main to auxiliary drive
• Switch main motor off .
• Leave pump on.
• Close brake.
• Engage auxiliary gear.
• Release brake.
• Start auxiliary motor.
5.2.7.4 Safety "Off" (emergency stop)
• Switch off main motor and/or auxiliary motor, depending on type of operation.
• Close brake.
5.2.8 Auxiliary drive (optional)
The bucket wheel drive may optionally be provided with an auxiliary drive. This auxiliary drive enables the
gear unit to be operated at a lower output speed in the same direction of rotation. The auxiliary drive is
connected with the gear unit by a clutch.
Main and auxiliary motors must not be started together.
The auxiliary drive should be protected against overload.
The auxiliary drive serves as a drive during maintenance, installation and repair work.
1
3
2
Fig. 5: Auxiliary drive components
1 Auxiliary drive 2 Shift lever 3 Limit switch
A detailed view of the gear unit can be obtained from the drawings in the gearunit documentation.
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