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11
C. DRYER ENCLOSURE REQUIREMENTS
Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of
twelve (12) inches (18-inches or more is recommended for ease of installation, maintenance , and service) above
the dryer outer top, except along the front of the dryer which may be closed in if desired.
NOTE: Even though a minimum of 12-inches above the dryer outer top is acceptable, a clearance
of 18-inches (or more) is suggested for ease of installation and service
(electrical power connections).
NOTE: When fire sprinkler systems are located above the dryers, a minimum of 12-inches above
the dryer outer top is required.
NOTE: Allowances must be made for opening the control door.
Dryers may be positioned side wall to side wall. However, allowances must be made for opening and closing of
the control door and the lint door. It is suggested that the dryer be positioned about two (2) feet away from the
nearest obstruction for ease of installation, maintenance, and service (to be measured from the back guard.)
(Refer to the previous illustration (on page 10) for details.)
NOTE: Air considerations are important for proper and efficient operation.
D. FRESH AIR SUPPLY
Air supply (make-up air) must be given careful consideration to assure proper performance of each dryer. An
unrestricted source of 800 cfm is necessary for each dryer. An unrestricted air entrance from the outdoors
(atmosphere) of a minimum of 1-1/2 square feet is required for each dryer. This area must be enlarged if
louvers or registers cover the opening. It is not necessary to have a seperate 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 is required. Two (2) openings measuring 2' by 3' (6 square feet) are acceptable. (Refer to the
illustration on page 12.)
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 fumes will result in irreparable
damage to motors and other dryer components.