20
maintenance schedule
Maintenance Service
Monthly
Semi-annually
Seasonal Startup or Annually
Inspect General Condition and Operation
x
x
Observe Operation of:
Mechanical–motor, fan and drive mechanism
x
x
Makeup valve (if equipped)
x
x
Inspect for unusual noise or vibration
x
x
Inspect and Clean:
Air inlet
x
x
PVC drift eliminators
x
x
Distribution basin, nozzles and collection basin
x
x
Fan motor exterior
x
x
Check:
Collection water basin level
x
x
Blowdown–adjust as required
x
x
Geareducer Drive (if equipped):
Check for loose fasteners including oil drain plug
x
Check for / repair oil leaks
x
x
Check oil level
x
x
Change oil
R
Make sure vent is open
x
x
Check driveshaft or coupling alignment
x
Check for loose driveshaft or coupling fasteners
x
Check driveshaft or coupling bushings or flex element for unusual wear
x
x
Lube lines (if equipped):
Check for oil leaks in hoses or fittings
x
R
x
Belt drive (if equipped):
Fan shaft bearing lubrication (every 3 mo.)
every 3 months
every 3 months
Check and tighten support fasteners
x
Check shaft, sheave and belt alignment
x
Check belt tension and condition
x
x
Check sheave bushing fastener torque
x
Fan:
Check and tighten blade and hub fasteners
x
Check fan blade pitch and tip clearance
x
Inspect and touch up fan hub
x
Motor:
Lubricate (as required)
R
Check mounting bolts for tightness
x
Operate at least
3 hours a month
3 hours a month
3 hours a month
Inspect and touch up all metal surfaces
x
Structure, Bearing Housing, Sheaves, Coupling Flange:
Inspect/tighten all fasteners
x
x
Inspect and touch up all metal surfaces
x
R
— Refer to Component User Manual
Note:
It is recommended at least weekly, that the general operation and condition be observed. Pay attention to
any changes in sound or vibration that may signify a need for closer inspection.
