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F. FRESH AIR SUPPLY REQUIREMENTS
When the dryer is operating, it draws in room air, heats this air through the tumbler (basket), and exhausts it out
of the building. Therefore, the room air
must be
continually replenished from the outdoors. If makeup air is
inadequate, drying time and efficiency will be adversely affected, and safety will be compromised. Premature
component failure may result.
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 13,000 cfm per minute (368 cmm) (cubic
meters per minute)
must be
supplied to each dryer. As a general rule, an unrestricted air entrance from the
outdoors (atmosphere) of a minimum twenty (20) square feet (6.096 m
2
) is required for each dryer.
To compensate for the use of registers or louvres used over the openings, the makeup air area
must be
increased
by approximately thirty-three percent (33%). Makeup air openings
should not
be located in an area directly
near where exhaust vents exit the building.
Allowances
must be
made for remote or constricting passageways or where dryers are located at excessive
altitude or predominantly low pressure areas. The dryer
must be
installed with provisions for adequate combustion
and make-up air supply.
IMPORTANT
: Makeup air
must be
provided from a source free of dry cleaning solvent fumes.
Makeup 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.
