You may have to change the fan motor to fix
the water cooler.
Water coolers, or evaporative air coolers, are also known as swamp coolers in the hot dry areas where they
operate most effectively. The design is simple: A fan forces outside air
through fiber filters that are kept wet with a water curtain that is pumped and
distributed from a reservoir in the bottom of the unit. The water cooler is
composed of several major components, including an electric motor, water pump,
a fan blade cage and a reservoir water control float. The water cooler is fixed
by replacing or adjusting these individual components as they present problems.
Instructions
Condition
the water reservoir by opening the drain plug at the bottom and on the side of
the unit to drain the water from the reservoir, and scrub the reservoir with a
wire brush to remove all scale buildup and debris. Wipe the reservoir clean of
all debris.
2
Paint
the inside of the reservoir by following label directions on special water cooler
paint, available at hardware stores, and allow it to dry.
3
Fill
the reservoir to the water level mark on the inside of the unit, and follow
label directions to pour special scale remover treatment, available at hardware
stores, into the water in the reservoir, which will remove scale and improve
water flow in the pump and the water distribution system.
4
Replace
the pump by unplugging it and disconnecting the plastic water tube. Place the
new pump into the new net filter bag, connect the new plastic tubing with a
plumber's clamp to the pump and plug it in.
Evaporative air cooler
5
Install
a new water distribution system known as the spider because of its central
black hub and eight curved water tubes branching out from it. Remove the hub by
unscrewing the nut that attaches the central hub to the top of the unit.
6
Cut
the new water tubes to the same size as the existing ones; glue the tubes in
the holes of the new hub with PVC glue, available at hardware stores, and use
the bolt to attach the hub to the top of the cooler unit.
7
Change
out the old fan motor by using a crescent wrench to remove the bolt in the
motor slide mount, take off the fan belt and remove the existing motor. Place
the new motor in the slide mount, place the new fan belt on the flywheel and
adjust the position of the motor on the mount to apply adequate pressure so the
fan turns easily without producing a high squealing noise which indicates the
belt is too tight.
8
Remove
all mineral deposit buildup from the inside of the unit to keep water flowing freely,
by scrubbing the water troughs and water distribution ports with a stiff brush
and white vinegar. Cooling efficiency is determined by how much water is
evaporated when it runs through the filters.
9
Use a
toothbrush to scrub the float mechanism with white vinegar to remove buildup so
the balance arm can move freely. If necessary, replace the float assembly.
Adjust the float ball, much like the float ball in a toilet tank, by bending
the float arm to a position that will stop the flow of new water just below the
top of the drain tube that sticks up from the bottom of the reservoir floor.
