20
Observe operation of the float valve. Depress the operating lever to make
sure that the valve is operating freely. Inspect the suction screen for plugging.
Remove any debris that may have accumulated.
Check for any buildup of silt on the floor of the collection basin. Flush and
remove excessive buildup.
View the water pattern on the heat transfer coil. If there are dry spots on
the coil or inconsistent coverage, this may be evidence of a clogged nozzle.
Inspect nozzles for blockage.
Inspect heat transfer coil for scale buildup. If scale exists, discuss remediation
with your water treatment provider.
Annually Inspect the fluid cooler thoroughly, making maximum use of instruc-
tions given in the separate User Manuals. Check structural bolted connections
and tighten as required. Check to see that all bolts are tight in the fan and me-
chanical equipment region. 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 rec-
ommended that the recirculating water system be drained. Leave the basin
and pump drains open.
During shutdown, follow recommendations in the
Fluid Cooler Inspection
and Maintenance
section of this manual before attempting repairs.
Following each year’s shutdown and cleaning, inspect the fluid cooler’s metal
surfaces for evidence of the need to apply a protective coating. Do not mis-
interpret grime as a need to have the fluid cooler 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.
Fluid cooler framework
Check structural bolted connections and tighten
as required.
Fan and motor assemblies
Check fan assembly bolting and tighten as
required. Fan motor(s) should be operated for two hours twice a month. This
serves to dry out windings and re-lubricate bearing surfaces.
Note
maintenance
