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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 and pump motor exterior
x x
Coil surface
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 oil level, check for / repair oil leaks
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
Check fan cylinder for loose fasteners
x
Motor:
Lubricate (grease as required)
R
Check mounting bolts for tightness
x
Operate at least 3 hours a month 3 hours a month 3 hours a month
Basin Heater (if equipped):
Check for proper operation of temp/low water level sensor
x
Inspect/clean buildup of contaminant from sensor
x x
Structure:
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.