TESTING OPERATING VOLTAGES AND COMPENSATING FOR CONDUIT WIRE VOLTAGE DROPS

TM 10-6665-297-13&P 2-6 DETECTOR INSTALLATION (continued) 2-6.8 Connecting Conduit Wires from Detector to Control Module Assembly Terminals (continued) 1. Connect red or green conduit wires to terminal post marked DET 1, A on terminal panel (Model CD80OP: terminal TB-1, A-1). 2. Connect black conduit wire to terminal post marked DET 1, R on terminal panel (Model CD800P: terminal TB-1, R-l). 3. Connect white conduit wire to terminal post marked DET 1, C on terminal panel (Model CD800P: terminal TB-1, C-1). If two detectors are to be operated from a single control module, connect red or green, black, and white wires from the second detector conduit to terminal posts DET 2, A, R, and C respectively (Model CD800P: terminals TB-1, A-2, R-2 and C-2). Remove factory-installed resistors from terminals DET 2, A and C, and C and R (CD800P: TB-1, A-2 and C-2, and C-2 and R-2). Figures 2-11 through 2-15 show connections, all models.) 2-6.9 TESTING OPERATING VOLTAGES AND COMPENSATING FOR CONDUIT WIRE VOLTAGE DROPS. Special equipment required: 0-10 V range DC Voltmeter, 2% accuracy in 5-6 V range. Test Socket Adapter #0023-4027 (one furnished with each rack assembly) Circuit Card Extender #0023-4023 (except some CDSOOP models which have built-in extenders, and model CD80OW, for which the card extender is not required. Six-point rack assemblies provide an extender in storage socket at inside left in the chassis. Wall-mounting four and eight-point cabinets have extenders packed inside the cabinet.) Two people are required to test and adjust operating voltage: one at the control module, and another at the detector. This test must be conducted for each control/detector unit in turn. Test detector operating voltage level and compensating for conduit wire voltage drops in accordance with the fol- lowing steps: 1. Make certain that power is off at control module (PILOT ON/OFF light unlit on control module panel). WARNING: Before opening detector housing, use a portable sniffer to determine that no hazardous gas is present in the vicinity. 2. Remove protecting covers from detector sensor element as follows: 23-9617 7/1/76 2-28