Cooling Pad Assembly
The cooling pads are critical for proper, efficient cooler operation. They are made of laminated cellulose (paper)
fibers and arranged to give a large surface area for evaporation and to provide a rigid structure. The shape of
the cells allows high velocity airflow through the pad at a minimum pressure drop. At the same time, the air
passages between the cells force the incoming air to impinge on the wet cell surfaces and maximize
evaporation.
The WayCool® evaporative cooler also acts as an air filter and removes dust and other particles from
the air. This dirt collects on the cooling pads and lowers cooler efficiency. The pads should be cleaned
at least weekly and more frequently in dusty conditions. See Regular Cleaning under "Operation and
Maintenance."
The pump supplies a continuous flow of water over the pads causing a "sheet flow" which constantly replaces
the water lost to evaporation and keeps the pads saturated.
One cubic foot of the cooling pad material holds about a gallon of water during operation. One cubic meter
holds about 100 liters of water.
The cooling pads are relatively strong but are subject to crushing, especially when wet. Always run the
unit with the plastic retaining grates in place and handle them carefully when you clean them. Crushed
cells reduce the total airflow through the unit and therefore lowers its cooling capacity.
The cooling pad sections (two sections per side, eight sections total) are held by metal channels at the top and
bottom of the unit. The channels hold the cooling pads in position and form four sidewalls to completely enclose
the unit.
The top channels house the PVC pipe, which run horizontally along the channel directly above the cooling pads.
The bottom channels have a series of holes drilled through them to allow excess water flowing down the cooling
pads to return to the reservoir.
The plastic retaining grates fit in front of the cooling pads and sit in the same channels as the pads; holding
them in place and protecting them from accidental damage. The plastic grates and cooling pads are easily
removed by placing a flat blade under the bottom and lifting upwards, then outwards. Once one pad is removed,
the others can be lifted up and out by hand without using a blade.
Do not remove or handle the cooling pads when they are wet, as they damage easily. Run the blower
without the pump until pads are dry. With normal care, the pads should last at least two seasons. Abuse
or mishandling will reduce their effectiveness and shorten their life.
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