1. Assessment/Diagnosis 

• Assess the following parts: pump, pan, spider, float, damper, roof jack support, water line, water valve, electrical, pads, motor, fan. 

• Parts will be repaired or replaced as needed in accordance with manufacturer instructions. 

2. Clean pads or replace 

• Aspen pads can be soaked in soapy water to remove dirt. 

• Clean louvers in the cooler cabinet when you clean or change pads. 

• Replace the pads when they become non-absorbent, thin or loaded with scale and entrained dirt. 

3. Pump & sump pump 

• If the cooler has two pumps, one is a sump pump. 

• The sump pump drains the sump every 5 to 10 minutes of cooler operation.

4. Blower

• If there is noticeable dirt on the blower’s blades, clean the blades and blower with brush or air duster. 

5. Check motor amp draw and capacitor

• Check the amp draw for the motor and make sure it is within the range listed on the motor data tag.

• Also, check the capacitance on the capacitor to ensure it is still reading within the listed percentage range for the listed amount of farads.

6. Oil bearings 

• Lubricate blower bearings. 

• The bearings should have a small reservoir cup on top of the bearing. 

• Lift the cap and fill to the top. 

• Lubricate motor if it does not have sealed bearings.

7. Drip line 

• Clean the holes in the drip trough that distributes the water to the pads. 

• Replace drip lines if needed. 

8. Reservoir 

• Clean the reservoir to remove dirt, scale, and biological matter. 

9. Intake area if circulating pump 

• Pay particular attention to the intake area of the circulating pump during cleaning. 

• Debris can get caught in the pump impeller and stop the pump. 

10. Float assembly 

• Check the float assembly for positive shutoff of water when the sump reaches its level. 

• Repair leaks and replace a leaky float valve. 

11. Additional repairs  

• Any additional repairs or parts replacement will be made as necessary in accordance with manufacturer's instructions. 

• Ensure all components function properly. 

12. Belt inspection and tension

• Check fan belt tension. 

• The belt should not have more than 1" of movement before it gets tight. 

• If the belt is worn, or if it visibly damaged, or it is visibly sagging, then it is time to replace it.

13. Belt replacement 

• After belt replacement, re-tension it so it has no more than 1" of play. 

• The adjusters are part of the swivel motor mount on the blower housing.

14. Client Ed

• Educate client on proper operation of cooler.

• Discuss winterization of cooler.