Preventive Maintenance Work Plan Chart Page 24
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35Preventive Maintenance Work Plan
Frequency Key
W – Weekly
M - Monthly Q - Quarterly
SA- Semi-Annually A- Annually SST - Seasonal Start-Up SSH - Season Shut Down
Cooling Towers
Critical Tasks, to be performed during seasonal start-up
Frequency
Status
Date Completed Initials
Clean cooling towers by flushing, blowing down all associated piping.
SST
Inspect sprayer heads.
SST
Inspect structural supports.
SST
Inspect and clean louvers.
SST
Inspect collection trays and suction screens for plugging and clean.
SST
Inspect and clean drift eliminators.
SST
Test motor winding continuity on condenser fan motors.
SST
Inspect fans, bearings, housings, protective shields, motors, drives and/or belts. Lubricate as
SST
necessary. Record observations.
Inspect fan motor starters.
SST
Visually inspect motor starter/control center.
SST
Check operation of starter and inspect contact surfaces for wear or pitting.
SST
Check overload settings and check/tighten ALL electrical connections.
SST
Vacuum cabinets to eliminate dust build-up.
SST
Operate gear reducer (where applicable) until oil is warm. Drain oil and refill with new.
SST
Start unit(s) and operate. If applicable, sequence unit(s) through entire operating range.
SST
Record and address any abnormal vibrations.
SST
Observe cooling tower to ensure proper operation. Inspect for unusual noise or vibration.
M
Inspect and clean louvers, if required.
M
Check operation of make-up water valve and any associated controls/linkages, lubricate if
M
necessary.
Visually check fan gear reducer/drive oil sample for presence of water and/or sludge.
M
Check oil level in gear reducer/drive (if applicable). Add if required and record amount.
M
Provide Water Treatment.
M
During winter months ensure proper operation of basin heaters, if present.
M
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