Cg" Series Principle Of Operation - GAYLORD CG Series Technical Manual

GREASE EXTRACTION
The Gaylord "CG" 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 four 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 of
airplane wing type construction, and in its normally open
position, acts as the primary extracting baffle. (Refer to Figure
1) This baffle is hinged at each end and, in case of fire, is
automatically closed by thermostatic action. There is a small
sloped grease collecting gutter on the back side of the damper
which drains off liquefied grease, preventing it from re-entrain-
ing into the airstream.
"CG" SERIES VENTILATOR PRINCIPLE OF OPERATION
GREASE EXTRACTION
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 contami-
nants from dropping back into the high velocity airstream.
Baffle #4
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. Baffle #4 is inter-connected with
baffle #2, and performs washing and fire protection functions
simultaneously with baffle #2.
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 25 for details.
FIG. 1
3