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OPERATING INSTRUCTIONS
Start fan and check rotation. Viewed from top (discharge), fan
blades should rotate clockwise.
Hudson recommends to re-verify the blade clamp torque after
the initial 10-15 minutes of cold operation (i.e., the fan
doesn't need to be exposed to the working temperature of the
process). This will ensure that the blades are settled within the
clamps after the centrifugal forces have acted.
Check motor power consumption to make sure fan is pulling
desired load. CAUTION: If positive pitch is set in summer to
use all available motor amps (nameplate rating), motor
could be overloaded in winter. Design pitch angles usually do
not use all available horsepower; therefore, motors will not be
overloaded at lowest winter temperatures if preset pitch re-
mains unaltered.
For the fans that have remained idle (such as a shut-down or
turn-around), it is highly recommended to re-verify the torque
on the blade clamps before putting it back into operation.
HUB MAINTENANCE
Hub is designed for oil lubrication and is filled with Summit
Syngear 7150 or Shell Omala RL 150 synthetic oil for mini-
mum oxidation and very low evaporation over wide tempera-
ture ranges. For minimum maintenance, Hudson strongly rec-
ommends using only synthetic oil. Under normal conditions
oil level should be checked on a yearly basis.
Installation manual 1000H
Page 7 of 10
May 2015
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