IOM Manual – IBC Mixers
Mixers - LBC/HBC
10
Loose connections
Check the wiring and connections
Electric and
VFD drive
Safety switch position
Re-position the safety switch
All drives
Air motor seized
Flush the air motor.
Check that the air motor has a clean lubricated air
supply. Check and top up the air line lubricator & adjust
if required.
Air drive
Overload relay trips at
start
Wrong overload relay fitted
Check overload relay rating
Electric
drive
Wrong wiring connections
Check wiring against the diagram
Electric and
VFD drive
Overload relay trips
after several minutes
Wrong overload relay fitted
Check overload relay rating
Electric
drive
Overload relay set to the wrong
value
Check setting on overload relay
Electric
drive
Product different - higher SG or
viscosity product being mixed
Contact Tapflo or your local distributor for advice
Electric
drive
Motor starts but has low
torque or does not reach
full speed
3-phase motor is single phasing
Check that motor connections are correct. Check for
loose connections in wiring and at motor terminals.
Check that the voltage on each motor winding the
correct value.
Electric and
VFD drive
Motor intended for Delta is
connected in Star
Check motor connections.
Electric and
VFD drive
Air motor runs slowly
Poor air line lubrication
Check the air line lubricator top up and adjust if
required.
Air drive
Excessive dirt / wearparticles
inside the air motor
Flush the air motor.
Check the air motor has a clean lubricated air supply.
Check and top up the air line lubricator & adjust if
required.
Air drive
Flow control valve or fittings
damaged
Check and replace
Air drive
Exhaust muffler blocked
Clean muffler and replace the felt element
Air drive
