DATE: 10-02-03 FILE: IM_091-85-XX_Rev_A INSTRUCTION MANUAL LOW VOLTAGE ALARM 1901 A LOW VOLTAGE DETECTOR WITH TIME DELAY TO MEET THE REQUIREMENTS OF NFPA 1901 MODEL(s) 091-85-12 091-85-24 091-85-24-VER 3 YEAR WARRANTY KUSSMAUL ELECTRONICS CO., INC. 170 CHERRY AVE., WEST SAYVILLE, N.Y. 11796-1221 TEL: in NY 631-567-0314 TOLL FREE: 800-346-0857 FAX: 631-567-5826 INTRODUCTION: NFPA 1901, Standard for Automotive Fire Apparatus, 1996 Edition, paragraph 9.3.3 requires a low voltage alarm to detect whenever the battery voltage of a vehicle drops below a threshold for a 2 minute interval. The Model 091-85-XX, Low Voltage Alarm/1901 is a voltage sensing device which is designed to fulfill the requirements of referenced NFPA 1901 Standard. The Model 091-85-XX contains voltage sensing circuits, a 2 minute timer, an output relay as well as RED and GREEN colored LEDs to indicate status. In operation the Model 091-85-XX continually monitors a system voltage present at J1-1 (+ VDC) with respect to J1-2 ( VDC Return). When the system voltage is equal to or greater than the following "Low Voltage Thresholds" the GREEN LED is illuminated indicating a normal system voltage. Model Type 091-85-12 091-85-24 091-85-24-VER Nominal System Voltage 12.0VDC 24.0VDC 24.0VDC Low Voltage Threshold 11.8VDC 23.6VDC 23.0VDC Whenever the monitored system voltage drops below the Model Type "Low Voltage Threshold" a timer internal to the Model 091-85-XX is started. If the Low Voltage condition continues for more than 2 minutes the Model 091-85-XX output RELAY is energized, the GREEN LED will extinguish and the RED LED will illuminate. The output RELAY will remain energized (COM makes NO) until the sensed system voltage rises above; 12.8VDC for Model 091-82-12 25.6VDC for Model 091-85-24 24.8VDC for Model 091-85-24-VER The output relay has both normally open (NO) and normally closed (NC) contacts available providing the installer with complete flexibility in wiring the alarm circuit. Any external alarm indicator or alarm horn must be provided by the installer consistent with the output relay contact ratings provided in Model specifications. The Model 091-85-XX is NOT waterproof so it is suggested that it be mounted in a suitable location. Care should be taken to wire the +VDC AND VDC Return sense lines to an electrical point representative of system voltage monitoring requirements so that an accurate indication of system voltage may be obtained. Fuse +VDC sense line as required using ONLY an ultra low resistance/voltage drop device. Refer to Figure 1 for illustration of a typical wiring configuration and output relay contact rating(s). SPECIFICATION AND OUTLINE Temperature Environment: Main Input Power: Input Current: Output Relay Rating: Model 091-85-12, -24; 0 to 50 deg C. Model 091-85-24-VER; 0 to 100 deg C Model 091-85-12; 12VDC Nominal Model 091-85-24-XX; 24VDC Nominal Model 091-85-12: 120 ma, relay ON, 50 ma relay OFF Model 091-85-24: 75 ma, relay ON, 30 ma relay OFF Model 091-85-12: 30A/240VAC/14VDC NO 20A/240VAC/14VDC NC Model 091-85-24-XX: 30A/240VAC/14VDC Model 091-85-12; 11.8VDC Model 091-85-24; 23.6VDC Model 091-85-24-VER: 23.0VDC Low Voltage Alarm Threshold: Restoration Voltage Threshold: Model 091-85-12; 12.8VDC Model 091-85-24; 25.6VDC Model 091-85-24-VER: 24.8VDC Low Voltage Duration for Alarm: Fixed: Two (2) minutes +/- .5 minutes. Weight: 0.5 lbs 5.10 3/16" DIA. OUTLINE 2.95 4,50 1.55 INSTALLATION RECORD & WARRANTY Date Installed Installed By Vehicle Identification Vehicle Owner WARRANTY All products of Kussmaul Electronics Company Inc. are warranted to be free of defects of material or workmanship. Liability is limited to repairing or replacing at our factory, without charge, any material or defects which become apparent in normal use within 3 years from the date the equipment was shipped. Equipment is to be returned, shipping charges prepaid and will be returned, after repair, shipping charges paid. Kussmaul Electronics Company, Inc. shall have no liability for damages of any kind to associated equipment arising from the installation and /or use of the Kussmaul Electronics Company, Inc. products. The purchaser, by the acceptance of the equipment, assumes all liability for any damages which may result from its installation, use or misuse, by the purchaser, his or its employees or others. ...