Install strobe light and secure with mounting hardware.
Connect cable to strobe light.
Stand up mast, align holes and studs, and secure mast with 12 hex nuts and lockwashers.
Make sure main power switch is off and circuit breaker 1 P14 or 4P14 is open (OFF) when
performing maintenance. Redtag switch with "WARNING DO NOT ACTIVATE. REPAIRS
4-14.1 Cleaning and Inspection
Wipe exterior clean with clean cloth.
Visually inspect for loose wire connections, corrosion, or damage. Clean corrosion and tighten loose
4-14.2 Test. Check input voltage to buzzer located in dayroom on aft bulkhead. If input voltage Is between 25 and 28
Vdc, replace buzzer as given in paragraph 4-14.3. If input voltage is not between 25 and 28 Vdc, check connections and
continuity of input cable 4P14C Tighten loose connections or repair or replace bad cable. If input cable is good, check
alarm relay module as given in paragraph 4-9.
Tag and disconnect cable 4P14C from buzzer.
Remove mounting hardware and remove buzzer.
Install buzzer and secure with mounting hardware.
Connect cable to buzzer
4-15 Inverter/Battery Charger
Make sure circuit breaker 13P13 on power panel 3 is open (OFF) position when performing
maintenance. Redtag circuit breaker with "WARNING DO NOT ACTIVATE. REPAIRS BEIN(;
4-15.1 Cleaning and Inspection
Wipe clean exterior of charger with clean cloth. 'Vacuum clean interior of charger.
Visually inspect for indications of burns, corrosion, loose connections, or damaged parts. Clean corrosion and
tighten loose connections. Touch up paint according to TB 43-0144. Do not paint threads or labels.
4-15.2 Test. See manufacturer's service manual in Appendix B for additional information.
If charger Is inoperative or not charging battery, close (ON) circuit breaker 1 3P1 3 on power panel 3. Check ac
input and dc output fuses. If fuses are good, go to step b. If fuses are bad, replace fuse.
Check Input voltage from circuit breaker 13P13. If input voltage reading is not 120 Vac, go to step c to check
power source. If reading is 120 Vac, go to step d to check output cable