Cooling Tower Maintenance Checklist

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Operation and Maintenance Instructions
MAINTENANCE
CHECKLIST
PROCEDURE
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
1.
Clean pan strainer – monthly or as needed
2.
Clean and flush pan** – quarterly or as needed
3.
Check bleed-off valve to make sure it is
operative – monthly
4.
Check operating level in pan and adjust float
valve if necessary – monthly
5.
Check water distribution system and spray
pattern – monthly
6.
Check drift eliminators – quarterly
7.
Check the fan blades for cracks, missing
balancing weights, and vibrations – quarterly
8.
Check sheaves and bushings for
corrosion. Scrape and coat with ZRC - annually
9.
Lubricate fan shaft bearings* – every 1000
hours of operation or every three months
10. Check belt tension and adjust – monthly
11. Sliding motor base – Inspect and grease –
annually or as needed
12. Check fan screens, inlet louvers and fans.
Remove any dirt or debris – monthly
13. Inspect and clean protective finish – annually
- Galvanized: scrape and coat with ZRC
- Stainless: clean and polish with a
stainless steel cleaner.
14. Check water quality for biological contamination.
Clean unit as needed and contact a water
treatment company for recommended water
treatment program** – regularly
OPTIONAL ACCESSORIES:
1. Gear Reducer – Check oil level with unit
stopped – 24 hours after start-up & monthly
2.
Gear Reducer/Piping – Do visual inspection
for oil leaks, auditory inspection for unusual
noises and vibrations – monthly
3. Gear Reducer - Replace oil – semi-annually
4.
Oil Pump – Do visual inspection for leaks and
proper wiring – monthly
5.
Gear Reducer/Coupling – Check alignment of
the system – 24 hours after start-up & monthly
6.
Coupling/Shaft – Inspect flex elements and
hardware for tightness, proper torque &
crack/deterioration – monthly
* See maintenance manual for start-up instructions and lubrication recommendations.
** Cooling Towers must be cleaned on a regular basis to prevent the growth of bacteria including Legionella Pneumophila.
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