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5. Reinstall grease relief plugs and reinstall guard.
6. Resume normal tower operation.
Seasonal Shutdown Instructions
When the system is to be shut down for an extended period of time, it is
recommended that the entire system (cooling tower, system piping, heat
exchangers, etc.) be drained. Leave the basin drains open.
During shutdown, clean the tower (see Warning on cooling tower cleaning
in the Maintenance section of this manual) and make any necessary repairs.
Pay particular attention to mechanical equipment supports and coupling (or
drive shafts).
Following each year’s shutdown and cleaning, inspect the tower’s metal surfaces
for evidence of the need to apply a protective coating. Do not misinterpret
grime—and transient rust from the piping system—as a need to have the tower
painted. If relatively bright metal can be exposed by cleaning, consider that the
galvanizing has remained effective. Unless there is evidence of a generalized
failure of the galvanizing, localized touch-up should be all that is required.
To the extent that the galvanizing (zinc coating) still exists, paint
will not adhere to it readily. Contact the manufacturer of the coating
you intend to use for instructions.
Tower framework:
Check structural bolted connections and tighten as
required.
Fans:
Check fan assembly bolting and tighten as required. Use torque values
prescribed in the Fan User Manual.
Fans shaft bearings:
If equipped, lubricate fan shaft bearings at close of each
operating season, as described in the Maintenance section of this manual.
Electric motors:
Clean and lubricate motor at close of each operating season
(refer to motor manufacturer’s recommendations.) Check motor anchor bolts
and tighten as required.
maintenance
Note
