11
D. FRESH AIR SUPPLY REQUIREMENTS
Air supply (make-up air)
must be
given careful consideration to assure proper performance of each dryer. An
unrestricted source of 800 cfm (22.65 cmm) is necessary for each dryer. An unrestricted air entrance from the
outdoors (atmosphere) of a minimum of 1-1/2 square feet (0.14 square meters) is required for each dryer. This
area
must be
enlarged if louvers or registers cover the opening. 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 the dryers. For example, for a bank of eight
(8) dryers, a total make-up air opening of 12 square feet (1.15 square meters) is required. Two (2) openings
measuring 2 feet by 3 feet (6 square feet) - 0.61 meters by 0.91 meters (0.56 square meters) are acceptable.
The dryer
must be
installed with provisions for adequate combustion and make-up air supply.
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.
IMPORTANT:
Make-up air openings
should not be
located near ductwork exhaust outlets. If
make-up air openings are too close to the exhaust outlet, lint and fumes may be drawn
back into the dryer area through these openings.
NOTE:
Component failure due to dry cleaning solvent fumes will VOID THE WARRANTY.
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