MAXIDRY MAXI200, Installation Manual, Page: 34 / 78

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C. FRESH AIR SUPPLY REQUIREMENTS
When the dryer is operating, it draws in room air, heats it, passes this air through the tumbler, and exhausts it out of the
building. Therefore, the room air
must be
continually replenished from the outdoors. If the make-up air is inadequate,
drying time and efficiency will be adversely affected. Ignition problems and sail switch “fluttering” problems may
result, as well as premature motor failure from overheating. The dryer must be installed with provisions for adequate
combustion and make-up air supply.
Air supply (make-up air)
must be
given careful consideration to assure proper performance of each dryer. An unrestricted
source of air is necessary for each dryer. An airflow of 5,300 cfm (cubic feet per minute) – 150.08 cmm (cubic meters
per minute)
must be
supplied to each gas dryer and 6,500 cfm (184.06 cmm)
must be
supplied to each steam dryer.
As a general rule, an unrestricted air entrance from the outdoors (atmosphere) of a minimum of 6 square feet (0.56
square meters) is required for each gas dryer and a minimum of 8 square feet (0.74 square meters) is required for each
steam dryer.
To compensate for the use of registers or louvers used over the openings, this make-up air area
must be
increased by
approximately thirty-three percent (33%). Make-up air openings should not be located in an area directly near where
exhaust vents exit the building.
It is not necessary to have a separate make-up air opening for each dryer. Common make-up air openings are acceptable.
However, they
must be
set up in such a manner that the make-up air is distributed equally to
ALL
the dryers.
Allowances must be made for remote or constricting passageways or where dryers are located at excessive altitudes
or predominantly low pressure areas.
IMPORTANT:
Make-up air must be provided from a source free of dry cleaning solvent fumes.
Make-up air that is contaminated by dry cleaning solvent fumes will result in
irreparable damage to the motors and other dryer components.
NOTE:
Component failure due to dry cleaning solvent fumes will VOID THE WARRANTY.