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Chapter 3 - Daily Operation, Page 3-6_______________________________________________________
Turning Off the Exhaust Fan and Starting the Wash Cycle
Caution: Always turn off the cooking equipment and allow to cool before turning off the exhaust fan.
The chemical fire extinguishing system may discharge if the cooking equipment is on or hot when the
exhaust fan is off.
To turn off the exhaust fan, UV Lamps, ESP Cells and start the Wash Cycle sequence push the START
WASH button on the Gaylord Command Center (Refer to Figure 3-4-1). If the Command Center is
programmed to stop the fan automatically, then the START WASH button does not need to be pushed.
When the START WASH button is pushed the following occurs:
1. The exhaust and supply fans shut off.
2. The UV lamps shut off and the green UVi SYSTEM ON light will shut off.
3. The ESP Cells shut off and the green ESP STATUS LIGHT will shut off.
4. Baffle #1 begins closing forward to the wash position (Refer to Figure 3-7-1). This action takes
approximately 45 seconds. Note: Baffle #1 only moves to the wash position on Models CG3-UVi-SPC
and CG3-UVi-SPC-FDL Series. Baffle #1 is fixed on Models CG3-UVi-SPC-FDT, CG3-UVi-SPC-FDD and
CG3-UVi-SPC-ND. Refer to pages 1-6 and 1-7 for complete explanation. Important Note: Refer to
your Command Center Technical Manual for specific text displayed while the baffle #1 is moving to
the wash position.
5. Once Baffle #1, the damper, closes, the Wash Cycle sequence begins (Refer to Table 3-8-1). If the
Ventilator does not have an electric damper, the Wash Cycle sequence begins immediately after
pushing the START WASH button. There are six sequences in the Wash Cycle as shown in Table T-2-
8-1. When the wash is initiated the first sequence, Upper ESP Cell Wash begins; the Detergent Pump
is energized, and hot detergent water goes to the appropriate Wash Manifolds washing the ESP Cells
from above, then a delay, then another wash, another delay followed by a rinse cycle.
completion of the ESP Cell Wash the Extraction Chamber/Particulate Separators/UV Lamps/Lower
ESP Cells are washed. All Wash, Delays and Rinse times are for the length of time programmed in the
Command Center.
sequence and Table T-3-8-2 show factory suggested times for the Extraction Chamber/Particulate
Separators/UV Lamps/Lower ESP Cell Wash Cycle.
The Wash Cycle sequence washes away the day's grease, dust and lint accumulation from the
Baffles in the Extraction Chamber, the Particulate Separators, gray dust from the UV Modules, and
smoke particles from the ESP Cells, flushing them down to the main gutter which slopes to drain
that leads to the building drain system (Refer to Figure 3-7-1). Important Note: Refer to your
Command Center Technical Manual for specific text displayed while the Ventilator is in a Wash Cycle.
6. Upon completion of the Wash Cycle, baffle #1 stays in the closed wash position until the exhaust fan
is re-started. Closing the baffle saves building energy by not allowing conditioned air from drafting
up the exhaust duct, or in cold climates prevents cold air from coming down the duct and into the
kitchen.
Note 1: If the Ventilator is equipped with a Gaylord Autostart Controller, the exhaust fan will stay on if
the temperature at the sensor mounted in the canopy exceeds 90°F. (Refer to Figure 3-7-1). Once the
temperature drops below 90°F., the fan will continue to run for 15 minutes and then shut off.
Table T-3-8-1 show factory suggested times for the Upper ESP Cell wash
Upon
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