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G310A -A Revised February 20, 2007 Page 5 CENTRAL PROCESSING UNIT (CPU) CONTROL BOARD (P/N G302) The CPU control board is housed / attached inside the system enclosure. A 9V DC battery powers the control board's circuitry. REMOTE ALARM CONNECTION � ;.; P1 TERMINAL STRIP + t —• -. r ni • I RELAY a e • , Red Wire Sensor 2 (� - ( P/N G305 -8) AUDIBLE 11111 ' ,o I \D LLS7 �� Black Wire _ ALARM g I rr1iI _ Red Wire Sensor 1 RESET �,y t gm' 4— Black Wire) (P /N G305 -A) _. SWITCH E.. o o. � .- I=II 4 - COM (K1} In c a I(I/ 4— N/C DRY CONTACTS (Interconnect Cable) [] 0BATTERY ICC-7I 4- N/O d Red Wire Cylinder d IC /1` IC��]I t Release Valve oat 0 O e .4. (P/N 0303 -F) car O = 57� J Black Wire ■ulIi 4 - - AC/DC ADAPTOR • ,-„---%; lil wit \ , i FIGURE 3 FIGURE 3A .%. SUPERVISED CIRCUITRY: The supervised circuitry is designed with a continuous beeping alarm to give an indication of defective electronics or loose terminal sensors. LOW BATTERY WARNING: The audible alarm on the CPU control board will "chirp" approximately every SYSTEM OPERATION LIGHT: The red "power" light 45 seconds when a low battery condition exists. If this will blink approximately every 45 seconds to confirm condition exists, 9V DC battery must be replaced the system is operating. immediately to insure proper system operation. If the "chirp" continues there is possible trouble in the AUDIBLE ALARM: The system alarm is designed to electronic supervised circuitry in which case an sound once a stovetop fire has activated the system. authorized Twenty First Century service center should The system operation light (red LED) will blink once be contacted. every second during system activation. In addition the alarm will sound continuously until the reset button is AUXILIARY OUTPUTS: The auxiliary output terminal manually pushed, and then the system operation light strip P1 position 5 (COM),6 (N /C), & 7 (N /O), provide will again blink approximately every 45 seconds. a set of dry contacts that switch with a (1) second impulse every ten (10) seconds. These contacts are REMOTE ALARM CONNECTION: This connection is used with the standard electric or gas shutoff provided where an optional remote alarm is required. interconnect cable. The Interconnect cable is connected to 5 (COM) and 7 (N /O). The contact AC /DC Adaptor: A connection (J2) is provided for an rating for these terminals is 5 AMP 24 VAC. (See optional AC/DC wall adaptor for continuous AC power FIGURE 3) supply with battery backup. The wall transformer is a recognized component with a maximum input rating of NO ADJUSTMENTS REQUIRED: The CPU control 120VAC 60 Hz 4.85 w 300 MA with an output rating of board's sensitivity / operating levels are preset and 9VDC (See FIGURE 3A). factory tested for optimum performance.