10
C. DRYER ENCLOSURE REQUIREMENTS
Bulkheads and partitions
should be
made of noncombustible materials and
must be
located a minimum of
12-inches (30.48 cm) - (18-inches [45.72 cm] or more is recommended for ease of installation, maintenance, and
service) - above the dryer’s outer top, except along the front of the dryer which may be closed in if desired.
NOTE:
Even though a minimum of 12-inches (30.48 cm) above the dryer’s outer top is acceptable, a
clearance of 18-inches (45.72 cm) - (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 (30.48 cm)
above the dryer’s outer top
is
required
.
NOTE:
Allowances
must be
made for opening the control door.
Dryers may be positioned sidewall to sidewall. 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 2 feet (0.61 meters) 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 9
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 840 cfm (cubic feet per minute) - 23.78 cmm (cubic meters per minute) - is necessary for
each dryer. An unrestricted air entrance from the outdoors (atmosphere) of a minimum of 1-1/2 square feet (0.13
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 (1.11 square
meters)
is
required
. Two (2) openings measuring 2 feet by 3 feet (0.61 meters by 0.91 meters) - 6 square feet
(0.55 square meters) - are acceptable. (Refer to the
illustration
on
page 11
.)
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.
