Greenheck DG / DGX with Direct Spark (470652) - Manual (Page 34)

Direct Spark Ignition Make-Up Air 34
®
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 should be replaced.
IMPORTANT
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.
IMPORTANT
Replacement filters should be from the same
manufacturer and the same size as the original filters
provided with the unit.
Evaporative Coolers
The media should be periodically 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 flush rate.
The cooling media has a useful life of 3 to 5 years
depending on the water quality and the bleed-off or
flush rate.
Leaving Air Entering Air
45º
15º
Media Orientation
IMPORTANT
When reinstalling the evaporative media, make sure
that it is installed correctly. Reference the drawing
shown below.
IMPORTANT
Replacement media should be from the same
manufacturer and be the same size as the original
media provided with the unit.
Motors
Motor maintenance is generally limited to cleaning and
lubrication (where applicable).
Cleaning should be limited to exterior surfaces only.
Removing dust and grease build-up on the motor
assures proper motor cooling.
Motors supplied with grease fittings should be
greased in accordance with the manufacturer’s
recommendations.
IMPORTANT
Do not allow water or solvents to enter the motor
or bearings. Motors and bearings should never be
sprayed with steam, water or solvents.
IMPORTANT
Greasing motors is only intended when fittings are
provided. Many motors are permanently lubricated,
requiring no additional lubrication.
IMPORTANT
Be sure to read and follow the manufacturer’s
recommendations before using any cleaning fluid.
CAUTION
Caution should be used to avoid injury when venting
the coil. High pressure and/or high temperature fluids
can cause serious injuries.
Chilled Water Coils
Test the circulating fluid for sediment, corrosive
products and biological contaminants. Make 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.
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.
Cooling Coils
WARNING
Repair and replacement of the coil and the connecting
piping, valves, etc., should be performed by a
qualified individual.