12-2.3TM 55-1520-240-T12-2.3 FIRE DETECTION SYSTEM VISUAL CHECKINITIAL SETUPApplicable Configurations:AllTools:Electrical Repairer’s Tool Kit,N S N 5 1 8 0 - 0 0 - 3 2 3 - 4 9 15Materials:NonePersonnel Required:68F10 Aircraft ElectricianReferences:T M 5 5 - 1 5 2 0 - 2 4 0 - 23Equipment Condition:T M 5 5 - 1 5 2 0 - 2 4 0 - 2 3.Battery DisconnectedElectrical Power OffHydraulic Power OffNo. 1 and No. 2 EngineAccess Covers Open1.2.3.4.5.Check Fire Detector switch (1).Check No. 1 engine and No. 2 engine firehandles (2).Check No. 1 and No. 2 engine fire detec-tion controls (4).Check sensing elements (5) around No. 1engina.Check sensing elements (7) around No. 2If switch (1) is loose or damaged, tighten or re-place it as required.If either fire handle (2) is loose or damaged,tighten or replace it as required, If any light (3) isloose or damaged, tighten or replace it as re-quired.If either control (4) is loose or damaged, tighten orreplace it as required. If wiring to either control ISdamaged, repair or replace it as required.If any element (5) is damaged or kinked, replace it,If element connector (6) is loose, tighten it,If any element (7) is damaged or kinked, replace it.engine.If any element connector (6) is loose, tighten it.FOLLOW-ON MAINTENANCE:T M 5 5 - 1 5 2 0 - 2 4 0 - 2 3:Close No. 1 and No. 2 engine accesscovers.1 2 - 3 2
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