User`s manual

Water Supply System cont'd
A drain in the reservoir allows you to drain the unit for cleaning and maintenance. A drain cap on the underside
of the aluminum tray covers the drain during operation. Make sure the cap is in place before you fill the
reservoir. The drain cap should be finger-tightened only.
The pump is attached to a bracket, which in turn is fixed to the blower housing. The bracket holds the pump in
its proper position on top of the foam filter and slightly above the bottom, allowing sufficient space for water to
enter the pump suction.
The pump can be easily removed and replaced with the services of a qualified electrician.
A small plastic screen covers the pump inlet to prevent foreign matter from entering and damaging the pump
impeller. The screen snaps in place and can be easily removed for inspection or cleaning.
The pump sits on a foam filter; somewhat like a sponge. The filter traps dirt that could enter the water
distribution system and build up on the cooling pads, reducing their effectiveness. Dirt could also accumulate in
the PVC pipes and plug the spray holes.
The pump discharges through a fine screen washable filter which decreases the contamination of the cooling
pads and water system. The discharge filter casing is a clear plastic so dirt buildup on the internal screen is
easily visible. As dirt builds up, water flow to the cooling pads is reduced and performance decreases. The clear
filter housing is threaded and screws into the filter body for easy removal to access the screen.
A dirty water supply will quickly reduce the unit's performance and the unit will require more frequent
cleaning to maintain cooling effectiveness. Always try to use a filtered, treated water supply.
A clear vinyl hose connects the pump to the filter. From the filter, a "T" connector supplies two lines that run
along the bottom and up opposite frame corners to supply the PVC pipe with water. Each vinyl hose connects to
two PVC pipes which run horizontally along the top of the frame above the cooling pads.
The PVC pipes have a series of holes that run the full length of the pipe. Each PVC pipe is covered with a
plastic mesh sock which helps break up the water as it leaves the spray holes. This gives a more even water
distribution across the cooling pad and reduces splashing. The holes direct the water inward at a 90° angle to
continuously saturate the cooling pads from the top down. Excess water drains back to the reservoir through
drainage holes in the bottom support channels which support the cooling pads.
Water cleanliness has a major effect on the cooler's performance. Use a clean water supply and
consider a water softener if your water is hard. Dissolved solids in hard water deposit on the cooling
pad surfaces and reduce the airflow through the unit and therefore the amount of evaporation.
Pump
Pump impeller
Plastic screen
8