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Operation and Maintenance Instructions
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. Lubricate pump and pump motor according to manufacturer’s
instructions
5. Check operating level in pan and adjust float valve if neces-
sary – monthly
6. Check water distribution system and spray pattern – monthly
7. Check drift eliminators – quarterly
8. Check the fan blades for cracks, missing balancing weights,
and vibrations – quarterly
9. Check sheaves and bushings for corrosion. Scrape and coat
with ZRC - annually
10. Lubricate fan shaft bearings* – every 1000 hours of opera-
tion or every three months
11. Lubricate fan motor bearings – see mfg’s instructions. Typi-
cally for non-sealed bearings, every 2-3 years
12. Check belt tension and adjust – monthly
13. Inspect and grease sliding motor base - annually or as needed
14. Check fan screens, inlet louvers, fans and (dry) cooler coil.
Remove any dirt or debris – monthly
15. Inspect and clean protective nish – annually
- Galvanized: scrape and coat with ZRC
- Stainless: clean and polish with a stainless steel cleaner
16. Check water quality for biological contamination. Clean unit as
needed and contact a water treatment program** – regularly
17. Check coil surface for scale and/or corrosion - every 6 months
18. Inspect lubrication lines to bearings - quarterly
MAINTENANCE CHECKLIST
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