LORD
fan balancing systems are comprised of sensors,
a controller and one or more balancers that make
trim balance corrections to reduce fan vibration
while the fan is running, at any operating speed
or load. The system is able to compensate for
variable balance conditions due to material
build-up, temperature variations and changing
process conditions. Balance corrections are made
automatically or manually, minimizing vibration
caused by unbalance in seconds.
Features & Benefits
Cost Effective
– reduces
downtime and increases productivity. Trim
balances equipment while operating, without a
forced shutdown. Eliminates multiple starts and
stops necessary for manual balance correction.
Provides rapid payback on balancing system and
installation cost.
Efficient –
optimizes equipment life (bearings, motors,
seals, etc.).
Adaptable – fits
with existing condition monitoring systems.
Operates in either automatic or manual modes.
Versatile –
maximizes asset availability.
Reliable – performs
continuous monitoring and diagnostics, on-site
or remote. Eliminates unscheduled maintenance.
Fail-Safe –
maintains last correction, even if power is
lost.
How the Balancing System Works
One or more balancers are permanently fixed
on the rotating shaft, and each balancer is
surrounded by a stationary coil used to transmit
power into the balancer(s).
Sensors monitor vibration levels and transmit
information to the controller. When vibration
levels exceed a preset high-limit, the
controller signals the coil(s) to pulse power to
the balancer(s) to make a balance correction.
The correction is made by the repositioning
of two counterweighted rotors relative to each
other, located inside the rotating balancer(s).
Vibration levels are reduced as the rotors
are moved, until the controller senses that
vibration levels have dropped below a preset
low-limit.
The rotors are repositioned in seconds to
complete the trim balance correction, while the
fan continues operating without a forced
shutdown.
