PolarCool 36″ ZONE PolarCool™ Fan - Manual (Page 8)

Manual No. 4801-6404 Rev 8-10 PolarCool Page 8 of 15
Pad Removal
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.
7.3.4 Why Drain Water From The System?
If you have ever left a pot of coffee warming on the coffee maker you know the two principles at work in
evaporative cooling systems. First, as the coffee sits on the warming plate, the level of water in the pot goes down.
Second, the remaining coffee gets stronger as the water evaporates.
In your cooling system, these effects still apply. As water evaporates, no impurities are carried along. This leaves
all sorts of minerals, chemicals, and other impurities behind. The concentration of impurities in the reservoir and
system will quickly rise.
Drain the reservoir daily in dusty conditions, and twice a week in clean air.
Thumb screws
Pad
Pad Cover Plate
Instructions:
1. Unscrew thumb screws and remove
pad cover plate.
2. Remove Pads.