Hired-Hand Polar Cool: Portable Evaporative Cooling System - Manual (Page 10)

Manual No. 4801-5035 Rev 8-07 PolarCool Page 10 of 22
7.2 Frequency Of Pad Replacement
PolarCool pads, produced from a cellulose base and impregnated with a plastic resin anti-rot agent, can give years
of trouble free operation with proper maintenance (3 to 5 years is typical).
7.3 Extending Pad Life
As you use the PolarCool system, you will notice the need for good preventive maintenance. Algae growth, scale
(hard crusty deposits), and dirt accumulation are typical problems associated with poor maintenance.
Maintaining the PolarCool is very simple. It only takes a small amount of time and effort. If you follow the
guidelines below, your pads will last much longer, and be much more efficient.
7.3.1 Algae
To prevent algae, allow the pads to dry out each day, by running the fan without the pump running until the pads are
completely dry (about 15 minutes).
7.3.2 Scale
Scale is a concentration of solids that “plate” the surface of the pads if the water contains too many impurities.
Scale formation can be prevented by using water with a pH between 6 and 9 and silica levels below 150 ppm. If
this is impractical, scale can be minimized by increasing the drain-off rate. To clean pads, spray pads frequently
with water hose.
7.3.3 Dirt and Dust
If the pads are allowed to get excessively dirty, they should be removed from the system and washed down with a
water hose.
Lift Cover
Rotate Spray Bar
Remove Pads
NOTE: When lowering the cover, do not force the cover closed. Ensure the Spray Bar is
correctly centered beneath the Spray Deflector.
18" PolarCool Pad Removal
Spray
Deflector