12-VOLT LEAD-ACID BATTERY AND CHARGER

TM 10-6665-297-13&P 2-5 POWER SUPPLY CONNECTIONS (continued) 2-5.4 12-VOLT LEAD-ACID BATTERY AND CHARGER . A 12-Volt lead acid battery can be “floated” on a trickle-charger connected to the AC power supply to provide uninterrupted service for four hours (dependent on system load current), in the event of AC power failure. No transfer circuitry or switchover relays are required; connections from battery to DC + and-power input terminals of the control module assembly terminal board complete the installation. 2-6 DETECTOR INSTALLATION Installation of CD800/830 and CD802/832 Series detectors includes the following steps: 1. Installing conduit or cables. 2. Installing wires in conduit (3 conductors per detector assembly). 3. Testing for open-circuit, or leakage conditions in conduit wires. 4. Connecting conduit wires to detector. 5. Installing detector assembly. 6. Connecting conduit wires from detector to control unit assembly terminals. 7. Testing operating voltages and compensating for conduit wire voltage drops. 8. Calibrating detector and control module circuitry with a standard mixture of gas and air. 9. (If required) installation of sample lines, filter traps, etc., for sample-drawing-type-detectors. 2-6.1 INSTALLING CONDUITS : Install conduits between control module assembly and detector to contain cable with power and detector circuit wires. The conduit fitting to which the detector is coupled must be compatible with the detector end fitting as follows: Explosion-proof and weatherproof, diffusion-sampling Detector #0023-4012: ¾ -14 NPT male thread Duct-mounting, diffusion-sampling Detector #0023-4014: ¾ -14 NPT female thread Sample-drawing Detector #0023-4017 ¾ -14 NPT male thread 23-9617 7/1/76 2-21