REYMSA COOLING TOWERS, INC.
www.reymsa.com
The
All-Fiberglass
Cooling Towers
71
Maintenance
D.4 FAN MOTOR
Fan and its motor should be inspected yearly, and if required, a corrective maintenance should be performed.
The motor is TEFC (Totally Enclosed Fan Cooled) or TEAO (Totally Enclosed Air Over) with permanently
lubricated ball bearings and special moisture protection on the bearings, shaft and windings.
NOTE: It will be necessary to use a ladder to access the fan and motor located in the fan duct section at the
very top of the Tower. Use the safety equipment required by federal, state and local regulations.
Do not proceed without disconnecting and locking out
power for the motor and pump. Failure to do so may
result in personal injury or property damage.
CAUTION
Do not attempt any maintenance, inspection, repair or
cleaning in the vicinity of rotating equipment. The driver
controls must be in the “OFF” position, locked and tagged.
CAUTION
FAN MOTOR
Use a soft-starter or VFD as motor starter.
When using a Variable Frequency Drive (VFD), is not uncommon to exhibit resonant
frequencies that result in vibrations, damaging all components of the system. To prevent
premature failure, the VFD must be programed to “skip” resonant frequencies that cause
unusual rumbling or grinding noise.
WARNING
In Double Fan Cooling Towers (per cell), ensure to Start-Stop the fan motors at the same
time. If you need more information, please contact REYMSA.
WARNING
If fan motors are cycling (ON-OFF) at full voltage controlled by temperature signal
or heat load demand. Rapid ON-OFF cycles can damage the fan.
WARRANTY VOID
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