SPX Cooling Technologies MARLEY MH MHF705 - Manual (Page 31)

31
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.