Wiring, A. general considerations and recommendations, B. remote switch harness fabrication – ACR&Artex C406-N User Manual
Page 67
25-62-13
Page 67 of 109
MAR 1/13
ACR ELECTRONICS, INC / ARTEX PRODUCTS
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-N (453-5060), C406-N HM (453-5061)
TASK 25-62-13-450-805
6. Wiring
SUBTASK 25-62-13-990-001
A. General Considerations and Recommendations
CAUTION:
IF GROUND OR OTHER CONNECTIONS ARE BROKEN OR OTHERWISE DAMAGED, THE
ELT IS STILL CAPABLE OF AUTOMATIC ACTIVATION; HOWEVER, THE COCKPIT
REMOTE SWITCH MAY BE INCAPABLE OF RESETTING THE ELT AND OPERATION MAY
NOT BE INDICATED ON THE REMOTE SWITCH LED.
CAUTION:
INCORRECT TERMINATION OF THE WIRING IN THE CONNECTORS MAY DAMAGE THE
ELT, CAUSE TRANSMISSION ISSUES, OR RESULT IN A NON-FUNCTIONING REMOTE
SWITCH. VERIFY THE WIRING AGAINST THE WIRING DIAGRAM AND PERFORM A
CONTINUITY CHECK TO CONFIRM GOOD CONNECTIONS AND PROPER PIN
LOCATIONS.
CAUTION:
TO PREVENT INADVERTENT ELT ACTIVATION OR POSSIBLE COMPONENT DAMAGE,
DO NOT CONNECT THE HARNESS TO THE ELT OR COCKPIT REMOTE SWITCH UNTIL
ALL POWER AND GROUND WIRING CONNECTIONS ARE COMPLETED.
(1)
The following wiring and grounding considerations and recommendations are applicable:
(a)
Minimum 22 AWG wire size.
(b)
Shielding is recommended to help prevent EMI and RF interference.
(c)
Use high quality conductor meeting MIL-W-16878, M22759, M27500, or a commercial
equivalent acceptable for use in aircraft applications.
(d)
Provide a “Drip Loop” in the remote switch harness connection to the ELT to divert
moisture from the connector. See TASK 25-62-13-990-805 on page 23 for a definition.
(e)
Provide a “Service Loop” in the remote switch harness connection to the remote switch
assembly, such that the assembly can be withdrawn from the panel far enough to easily
disconnect the harness plug. See TASK 25-62-13-990-805 on page 23 for a definition.
(f)
All grounds required for this installation must be common to aircraft ground.
SUBTASK 25-62-13-450-001
B. Remote Switch Harness Fabrication
(1)
See "Figure 20. Remote Switch Harness Arrangement”, on page 68.
(2)
Fabricate a 5-wire harness long enough to reach from the ELT to the cockpit remote switch,
allowing enough slack to provide a drip loop at the ELT end and a service loop at the cockpit
remote switch end.
(a)
Strip approximately 0.15 in. (3 mm) of insulation from the remote switch ends of each of
the five cable wires and 0.19 in. (5 mm) from the ELT ends.
(b)
Dress and tin the bare wires to prevent the strands from fraying during terminal
crimping operations.