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AM-2 Control Panel houses an
electrically-controlled plumbing enclosure which controls the internal cleaning system in Captive-Aire/Aqua-Matic hoods. This control panel enables the
operator to perform three functions - engage the exhaust and/or make-up air fans (when
applicable); internally clean the hood (via 2 cycle cleaning event); and provide fire
protection within the extraction plenum.
When the fan switch is engaged, it allows the operator to turn the exhaust
and/or supply fans (where applicable) on. This is indicated by an illuminated green light.
When the wash switch is engaged, both of the fans are turned off. A two cycle cleaning
event now begins. The wash event requires 140F hot water. Detergent is injected into the
hot water line and the hot water and detergent are sprayed throughout the ventilation
hood. The time period of the wash cycle is adjustable up to 10 minutes to meet the
operator's requirements. The next event is the hot water rinse, adjustable up to 3
minutes. During this cycle, hot water flushes the detergent out of the hot water line and
the spray nozzles. During the rinse event, the remainder of the grease in the extraction
plenum is also flushed down the drain. The two events are now complete and the fans are
"off" awaiting further instructions from the operator.
In the case of a rise in temperature (possibly caused by fire), the thermostat
in the hood's duct collar signals the control panel to automatically begin the rinse event
and shuts off the fans. This continuous water spray inside the plenum reduces the
temperatures within the plenum, thus providing fire protection in the hood plenum. This
system can also be manually activated by engaging the fire switch provided on this control
panel. To reset* the control panel after the fire has been
controlled, simply engage the "fire" switch. The control panel is reset and
awaiting further instructions from the operator. In addition, this control panel also
provides contacts (Normally Open - Common - Normally Closed) for hook-up (by others) to
the building fire alarm system.
*NOTE:When the BUILDING FIRE ALARM has been
connected to the control panel, refer to the reset procedure of the Building Fire Alarm
System.
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