Model IGX Make-Up Air
37
®
Evaporative Cooling Module
The media must periodically be brushed lightly with
a soft bristle brush in an up and down motion while
flushing with water. This aids in reducing the amount of
mineral build-up.
For large amounts of mineral build-up, clean or replace
the media and increase the water bleed-off or drain and
fill rate.
The cooling media has a useful life of 3 to 5 years
depending on the water quality and the bleed-off or
drain and fill rate.
When reinstalling the evaporative media, make sure that
it is installed correctly.
Replacement media must be from the same
manufacturer and be the same size as the original
media provided with the unit.
Cooling Coils
Repair and replacement of the coil and the connecting
piping, valves, etc., must be performed by a qualified
individual.
Inspect the coil for signs of corrosion and/or leaks.
Repair any leaks as required.
Inspect the coil’s surface for foreign material. If the coil
surface needs cleaning, clean the coil from the leaving
air-side so that foreign material will be washed out of
the coil rather than pushed farther in.
Inspect and clean the drain pan to prevent the growth of
algae and other organisms.
Be sure to read and follow the coil manufacturer’s
recommendations before using any cleaning fluid.
Caution must be used to avoid injury when venting the
coil. High pressure and/or high temperature fluids can
cause serious injuries.
Leaving Air
Entering Air
45º
15º
Media Orientation
Motors
Motor maintenance is generally limited to cleaning and
lubrication (where applicable).
Limit cleaning to exterior surfaces only. Removing dust
and grease build-up on the motor assures proper motor
cooling.
Grease motors supplied with grease fittings in
accordance with the manufacturer’s recommendations.
Do not allow water or solvents to enter the motor or
bearings. Never spray motors and bearings with steam,
water or solvents.
Greasing motors is only intended when fittings are
provided. Many motors are permanently lubricated,
requiring no additional lubrication.
Filters
Filter maintenance is generally limited to cleaning and
replacement.
If aluminum mesh filters are installed, they can be
washed in warm soapy water.
An adhesive spray can be added to aluminum mesh
filters to increase their efficiency.
If disposable filters are installed, they can be checked
by holding up to a light source. If light cannot pass
through the filter, it must be replaced.
When reinstalling filters, be sure to install them with the
airflow in the correct direction. An airflow direction arrow
is located on the side of the filters.
Replacement filters must be from the same
manufacturer and the same size as the original filters
provided with the unit.
Chilled Water Coils
Test the circulating fluid for sediment, corrosive
products and biological contaminants. Take the
necessary corrective measures.
Maintain adequate fluid velocities and proper filtering of
the fluid.
If automatic air vents are not utilized, periodic venting of
the coil is recommended to remove accumulated air.
Maintenance
General
