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6924 Datasheet(PDF) 9 Page - Systemsensor advanced ideas. |
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6924 Datasheet(HTML) 9 Page - Systemsensor advanced ideas. |
9 / 12 page 4 RED LEDs USED FOR ALIGNMENT GREEN: FLASHES APPROXIMATELY EVERY 2 SECONDS IF POWERED UP AND SENSING A SAFE CONDITION. YELLOW: TURNS ON WHILE A TROUBLE CONDITION EXISTS. RED: TURNS ON IF AN ALARM CONDITION IS SENSED. LATCHES ON UNTIL RESET. NOT USED RECEIVER: TRANSMITTER: C0550-00 Figure 17. Alignment adjust pot (receiver only): ALIGNMENT LEDs ALIGNMENT ADJUST POT (RECEIVER ONLY) MAX. MIN. C0551-00 CAUTION The clear protective film and warning label on the smoked lens of both the receiver and transmitter MUST be removed before they can operate. The alignment of the 6424 is divided into three steps: alignment setup, alignment of the transmitter, and align- ment of the receiver. It is necessary for all three steps to be executed properly to ensure proper alignment of the product. If the 6424 is mounted to a recommended surface (see MOUNTING LOCATIONS) and alignment procedures are executed properly, false alarms and nuisance trouble signals will be avoided. The alignment procedure is best accomplished by two individuals. This allows the adjust- ment of the gain pot on the receiver during alignment of the transmitter without the need for several trips back and forth between the transmitter and receiver. A) ALIGNMENT SETUP: 1) At the transmitter, select the proper range using the range selection switch (SW2) on the transmitter. Short Range (S): 30 to 100 feet Long Range (L): 100 to 330 feet 2) If the transmitter is directly wired to the receiver (Figure 7), slide the alignment switch (SW1) on the transmitter to the A (align) position (see Figure 15). Point the trans- mitter directly at the receiver, then go to step 5. 3) If the transmitter is wired directly to a power supply, it should be temporarily wired to the receiver if possible (see Figure 8). NOTE: Temporarily wiring the transmit- ter to the receiver is beneficial because it activates the alignment LEDs on the transmitter to allow alignment of the transmitter without having to look at the align- ment LEDs on the receiver. 4) If the transmitter is not wired directly to the receiver, make sure the SW1 switch remains in the N (normal) position (see Figure 15) before going to step 5. Point the transmitter directly at the receiver. 5) At the receiver, select the proper sensitivity using the switch on the back of the receiver (see Figure 14). The sensitivity selected depends on the separation of the transmitter and receiver. The sensitivities and ranges shown are in accordance with UL standard 286, Smoke Detectors for Fire Protective Signaling Systems. SENSITIVITY DISTANCE 30% 30 to 92 feet 30% or 55% 92 to 178 feet (30% is more sensitive) 55% 178 to 330 feet 6) Using a small standard screwdriver, make sure the align- ment adjust pot on the receiver (see Figure 17) is turned fully counterclockwise, looking at it from the bottom (maximum gain). The alignment adjust pot changes the gain of the amplifier to compensate for differences in separation between the receiver and transmitter and has no effect on the detector sensitivity. 7) Turn on power to the system. 8) Slide the alignment switch on the receiver to A (see Figure 14). The yellow trouble LED should light to D400-18-00 9 I56-494-13R PRINTED IN MEXICO |
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