IOM Manual – IBC Mixers
Mixers - LBC/HBC
9
2.2. Operation
Tapflo Mixers series LBC, HBC can be driven by an electric motor with a DOL
starter or gearmotor with a frequency inverter. Mixer shaft speed can be change by
turning the potentiometer on the inverter - for more detailed instruction please refer to
the Leroy Somer instruction manual supplied with this mixer. Mixers can be also driven
by an air motor equipped with exhaust muffler and a flow control valve to regulate the
motor speed.
Always ensure access to the power supply or compressed air supply is kept clear.
Before operation visually check that all components are in a serviceable condition and
not damaged.
The mixer can be operated at any liquid level.
2.3. Fault Diagnosis
Fault
Possible cause
Action
Drive
Mixer motor runs but
not mixing the IBC
contents very well
Impeller rotating in the wrong
direction
Check that the direction of rotation corresponds with the
arrow on the mixer nameplate.
Rotation is clockwise when viewed from above.
All drives
Impeller rotating in the wrong
direction
Check that the direction of rotation corresponds with the
arrow on the mixer nameplate & that the flow control
and muffler are on the correct ports.
Rotation is clockwise when viewed from above.
Air drives
Shaft loose in the drive coupling Check shaft retaining grub screw are tight.
All drives
Folding impeller not opening
Check that the impeller is installed so the blades hang
downwards when not operating.
All drives
Product different - higher SG or
viscous product being mixed.
Contact Tapflo or your local distributor for advice.
All drives
Speed set is too low
Increase speed at VFD panel.
VFD drive
Motor does not run
Fault with mains supply
Check voltage at contactor input terminals
Electric and
VFD drive
Motor locked rotor
Check motor is free to turn
Electric and
VFD drive
Faulty contactor coil
Check if the contactor operates
Electric
drive
