Chapter 3 – Daily Operation, Page 3-4_________________________________________________________
Daily Operation (Cont.)
The delay time between the washes and rinses are programmed in the Command Center for a length of
time to allow the building’s hot water system to recover. The delay time may be programmed between 1
and 99 minutes. The 3 minute wash cycles are the standard wash times. If the ESP Cells are not adequately
cleaned it may be necessary to increase the length of the wash cycle and/or increase the length of the rinse
time to allow more soaking time. The wash and rinse cycles may be programmed for between 3-9 minutes.
NOTE: The wash system is designed to remove daily accumulations of smoke and grease particles in the
ESP Cells. If the ClearAir Unit is not washed a minimum of once during a cooking day, a smoke and
grease buildup could accumulate which the wash system cannot remove. If this occurs, the ESP Cells
will no longer remove the smoke particles. Refer to the Troubleshooting section of this manual
for corrective action.
Fire Cycle
Automatic internal fire protection is accomplished by the action of the thermostat(s) located in front of the
ESPC Cells. In the event of a fire within the unit, when the temperature of the conveying airstream, which
must pass over the thermostats, reaches 250°F, the Fire Cycle is activated which turns off the exhaust fan.
After the thermostat has cooled below 250°F, the exhaust fan may be restarted by pushing the START FAN
button. As an option, the ClearAir Unit may be wired so in addition to the exhaust fan shutting off the
water sprays within the ClearAir Unit come on. The water will run continually until the thermostat cools
below 250°F then run for another 2 minutes. At the conclusion of this cool down cycle the water will
shut off and the exhaust fan may be started by pushing the START FAN button.
Chemical Fire Extinguishing System
The National Fire Protection Association Standard 96, (NFPA-96) requires a fire extinguishing within the
ClearAir unit. Typically this is wet chemical type furnished and installed at the Gaylord factory in a cabinet
mounted on the ClearAir unit (Refer to Figure 3-4-1). If this system discharges, it must be recharged by a fire
extinguishing system company before the Exhaust Fan can be restarted.
Important Note:
The wash, delay and rinse times may be programmed for different times as needed to
adequately clean the ESP Cells. The Command Center illustrated in this manual may not
represent the model of Command Center you have. Refer to the Technical Manual for your
specific model of Command Center for complete instructions on programming wash, delay
and rinse cycle times. If you do not have a Technical Manual for your Command Center,
obtain the model number from the nameplate on the Command Center and contact Gaylord
Industries. Refer to page 1-1 for contact information.
Figure 3-4-1
Typical Wet Chemical Fire
Extinguishing System
