BAC 3240C Operation & Maintenance Manual

Contents

BAC 3240C Operation & Maintenance Manual Manual pdf 20 page image

WWW.BALTIMOREAIRCOIL.COM18• Lubricate the bearings as follows:– Initial Start-up: Normally, no lubrication is required since the bearings have beenlubricated at the factory prior to shipment. However, if the cooling tower has beenstored at the job site or more than three months, both bearings should be lubricatedwith new grease before initial operation. When lubricating, purge the old greasefrom the bearing by gradually adding grease until a bead of new grease appears atthe seal on the underside of the bearing.– Seasonal Start-up: Purge the bearings with new grease prior to start-up.– Operation: Purge the bearings with new grease every three months while inoperation, or 2,000 hours, whichever comes first.– Extended Shutdown: Purge the bearings with new grease before and after anyprolonged storage or downtime.Heat Transfer SectionFill & Drift EliminatorThe Series 3000 has PVC fill with integral drift eliminators.Inspection & Maintenance• Inspect and clean the fill with the integral eliminators at least quarterly.• The inspection procedure is as follows:– Shut-off the fan and the system pump.– Inspect the fill for obstructions, damage and fouling.• Remove any obstructions from the fill.• Remove any minor fouling chemically. Contact your local water treatment consultantfor advice.• Major fouling requires cleaning and flushing.Water Distribution SystemHot Water BasinThe hot water basins are located on the fan deck. The system water enters the coolingtower through the hot water basins (refer to Figure 6, page 19). A series of nozzles, whichdistribute water over the fill, are located in the hot water basin. There are four materialsof construction for the hot water basin: Galvanized steel, Thermosetting Hybrid Polymer,Type 304 stainless steel and Pultruded Fiberglass Reinforced Polyester (PFRP).