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
1.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.
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.
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