19
maintenance
separate service manuals. Check structural bolted connections and tighten as
required. Make preventive maintenance repairs as necessary.
Every 5 Years: If equipped, change Geareducer oil. Refer to the
Geareducer
User Manual
for instructions.
Seasonal Shutdown Instructions
When the system is to be shut down for an extended period of time, it is recom-
mended that the entire system (cooling tower, system piping, heat exchangers,
etc.) be drained. Leave the basin drain open.
During shutdown, follow recommendations in the
Cooling Tower Inspec-
tion and Maintenance
section of this manual before attempting repairs.
Pay particular attention to mechanical equipment supports and driveshafts.
Tower Framework Check structural bolted connections and tighten as
required.
Fan Check fan assembly bolting and tighten as required. Use torque settings
prescribed on the fan nameplate. Refer to fan user manual.
Fan Motor Clean and lubricate motor (if required) at close of each operating
season. (Refer to motor manufacturer’s recommendations). Does not apply to
motors with sealed bearings. Check motor anchor bolts and tighten as required.
Do not start motor before determining that there will be no interfer-
ence with free rotation of the fan drive.
The motor should be operated for three hours at least once a month. This
serves to dry out windings and lubricate bearing surfaces.
Refer to Marley
“Fan Motor” User Manual
Z0239042
for additional information.
At start of new operating season, make sure bearings are adequately lubricated
before returning motor to service. Does not apply to motors with sealed bearings.
Prolonged Shutdown:
If shutdown period is longer than seasonal, contact your Marley sales repre-
sentative for additional information.
Caution
