Cg3" Series Principle Of Operation - GAYLORD CG3 Series Technical Manual

"CG3" SERIES VENTILATOR PRINCIPLE OF OPERATION
GREASE EXTRACTION
The Gaylord "CG3" Series Ventilator extracts up to 95% of the
grease, dust and lint particles from the airstream passing
through it, when operated and maintained in accordance with
design specifications.
The hot, contaminant-laden air rising from the cooking
surface merges with the higher velocity air that wipes the front
of the cooking equipment and extends, like an air blanket, from
the front edge of the cooking equipment to the air inlet of the
ventilator. As the air moves through the ventilator at a high
speed, it is forced to make a series of turns around three
baffles. As the high velocity air turns around each baffle, the
heavier-than-air particles of grease, dust and lint are thrown out
of the airstream by centrifugal force. The extracted grease,
dust and lint are collected in the interior of the ventilator,
remaining out of the airstream until removed daily by the wash
cycle.
Baffle #1
This baffle, located at the air entrance of the ventilator, is a
three position damper. Position 1 is the exhaust on mode as
shown in Figure 1 below, position 2 is the wash mode, and
position 3 is the fire mode. When the "Start Fan" button is
pushed on the control cabinet, the damper opens to the
exhaust mode (position 1) to become the preliminary grease
extraction baffle. There is a small sloped grease collecting
gutter on the back side of the damper which drains off liquefied
grease, preventing it from re-entraining into the airstream.
Baffle #2
This baffle is located on the interior back wall of the ventilator
and is a stainless steel pipe, equipped with brass spray
nozzles on 8" to 10" centers. (Refer to Figure 1) During the
wash cycle, hot detergent water is released through the
nozzles. If the ventilator's automatic fire control system is
activated, fire smothering water spray is also released through
the spray nozzles.
Baffle #3
This baffle is located on the back of the inspection doors. This
baffle is also a grease collecting gutter, collecting grease, dust
and lint extracted by the ventilator - preventing the contaminants
from dropping back into the high velocity airstream.
NOTE: Some ventilators may be equipped with optional
"Custom Air" baffles (shown dotted) which reduces the
exhaust volume where the baffle occurs.
NOTE: Some ventilators may be equipped with optional
continuous cold water mist. Refer to Page 24 for details.
FIG. 1
GREASE EXTRACTION
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