If excessive deposits of minerals or salts begin to
build on the air entering edge of the Media, there may be one or two solutions.
1. Water flow down the Media is not sufficient enough
to wash debris from the surface. Adjust manual flow valve to create more
2. The water is excessively hard with latent minerals.
A water conditioning system should be installed if conditions warrant.
The Media face can be cleaned while water is flowing by brushing it with
a soft bristled brush in an up and down direction. After brushing, rinse
Media with water, remove Media and flush out pan and sump. Replace Media
with blue dye edge top and on the leaving edge of air flow. On 6"
or thicker pads, refer to the arrows indicating the direction of air flow.
(Special care shuld be taken while handling wet Media). If Media is replaced
improperly, it could cause condenser damage.
CAUTION: Do not attempt to clean Media by
brushing side to side, this will damage Media.
If deposits are too hard for normal brush cleaning, use a Calgonite type
condenser coil cleaner. Flush Media after application and brushing.
CAUTION: Do not use an acid base cleaner. Use of such chemicals
will destroy bonding glues and resins in media.
All Cool Egde CE-100 Model pre-coolers should be flushed out and cleaned
periodically to remove any algae or mineral deposits. In winter, turn
off water and electrical power to all model pre-coolers and drain lines
to prevent any damage from freezing or splitting. On the CE-100 Model
also drain reservoir of water by removing overflow tube.
CASING AND VALVE
1. Flush debris from bottom of the
cell casing or sump at least twice a year.
2. If a valve or tubing becomes plugged, back flush it
with the existing water line.
Where danger of freezing exists, the water supply
line must be disconnected and allowed to drain below roof line. Drain
sump on recirculating models. Loosen fitting at outlet of solenoid valve
to drain any water in distribution tubes and internal plumbing. CELdek
Media should be removed if ice or snow storms are anticipated to prevent
damage to Media from freezing and thawing.
Scale formation looks like frost and normally shows
up on the air entry side of the pad. To prevent scale formation, a bleed-off
equal to 10-50% of the amount of water evaporated may be required. The
exact amount will depend on the pH and hardness of the water. Once the
bleed-off rate is established, the scale can be controlled.
If chemical treatment is needed, the recommended treatment approach is the use of crystal modifiers: such as sulfonated polystyrenes and polymaleic acid. This treatment allows scale to form, but the chemical additives distort the resulting crystal structure, changing the scale to a non-adherent sludge. The sluge deposits are easy to flush from the media surface.
Although algae may grow on a HumiCool™
evaporative cooling pad, it will not cause deterioration or rot. But,
if allowed to grow freely, in may eventually clog the passages and inhibit
the flow of air. Algae buildup is controlled by implementing simple maintenance
techniques. The program should be started early. For more information