SPX Cooling Technologies CoolingTower Marley MCW - Manual (Page 22)

22
Maintenance
additional cleaning. Refer to “Cooling Tower Cleaning” section—page
18. Consult your water treatment expert as to prudent biological evalu-
ation testing.
annually: Relubricate motor according to the manufacturer’s instruc-
tions.
Check to see that all bolts are tight in the fan and mechanical equipment
region. Refer to Component User Manuals for torque values.
Inspect the tower thoroughly, making maximum use of instructions given
in the separate user manuals. Check structural bolted connections and
tighten as required. Make preventive maintenance repairs as necessary.
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, page 18) and make any
necessary repairs. Pay particular attention to mechanical equipment
supports.
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.
Note