TM 10-6665-297-13&P4-3MONTHLYMAINTENANCE(continued)4-3.2FilterScreeningServicing(continued)2.Flush filter screens with clean water, using fine-spray hose or immersion. (Soap and water may beused.)3.Dry filter screens. Heat or compressed air may be used to facilitate drying.4.Install screens and louvered front panels on cabinet.4-4SPECIALMAINTENANCEPROBLEMS4-4.1PAINTING. When painting the detector housing or vicinity, cover or other-wise protect the flamearrestor cover of the sensor element from paint overspray.4-4.2DETECTORIMMERSION. If the detector is accidently immersed in clean water, operate in gas-freeair for 5 or 6 hours until detector is completely dry; then calibrate and adjust in accordance withprocedures in Section 3, CALIBRATION AND ADJUSTMENTS. Discard and replace sensor element ifresponse is marginal or inadequate. If detector is immersed in water contaminated with dirt, solvent, orother combustible materials, discard and replace sensor element. Do not attempt to restore or use theelement further.4-5TROUBLESHOOTING.Highest quality components assure that CD800/830 andCD802/832 systems will be as troublefree asthe state of the art permits. If difficulties beyond routine maintenance and adjustment occur,troubleshoot in accordance with the following paragraphs.4-5.1GENERALPREPARATIONSFORTROUBLESHOOTING:1.Check for loose or broken wires.2.Turn power off and observe position of indicating meter pointer. Turn mechanical screwadjustment under meter to adjust pointer to zero reading if necessary.3.Make certain that detector is in pure, gas-free air (using J-W combustible gas indicator and J-W gas calibration kit with 100% nitrogen or zero-gas, dry-air cylinder if necessary, inaccordance with paragraph 3-2.1, step 3, instruction).23-96177/1/764-4
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