Ameri-King AK-451-ELT - Manual (Page 70)

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The following is a step-by-step instruction for replacing ELT Battery Pack P/N
4500010-( ) Series:
1. Using the 3/32” Hex Driver supplied with the ELT, remove the 4 retaining
screws and split lock washers that attach the battery case to the ELT Transmitter
Assembly (See Figure 15).
2. Insure both battery connectors are locked-in properly by its tab.
Verify the battery pack voltage is 13 +/- 0.5 VDC
Ensure that the O-Ring seal and the gasket are in place (See Figure 16).
3. Place the Transmitter Assembly face down on a bench. Press down on the
battery case to compress the battery contact springs. Re-install the four battery
retaining screws and lock washers and evenly tighten until the battery case is
pulled flat against the Transmitter Assembly.
4. Remove any existing battery replacement date labels from the battery case and
install the new label you prepared in step 3 above in a readily visible location on
the ELT.
5. After battery replacement, a transmitter function test must be performed as
described in section 3.3 of this manual.
FIXED OPERATION
(IN AIRCRAFT)
FOR NORMAL
OPERATION, MAIN
CONTROL SWITCH
MUST BE IN “ARM”
POSITION
F O R W A R D
To Activate: Lift & flip the switch to the “ON” position
Verify: The red “ON” light flashes 1 sec on, 4 sec off
Self Test: Lift & flip the switch from “OFF” to “ARM”
position.
Verify: The red “ON” light must illuminate for 4 sec
then extinguishes. Wait for an additional 21 sec.
Pass: The red “ON” light must remain extinguished
Fail: The red “ON” light flashes. Please see
Operation Manual for detail fault code analysis
This satellite ELT only floats w/ floating collar
 WARNING 
FOR AVIATION EMERGENCY USE ONLY.
UNLICENSED OPERATION UNLAWFUL
TRANSMITTER ASSEMBLY
LOCK
WASHERS (4)
RETAINING
SCREWS (4)
BATTERY PACK
Figure 15: Battery Replacement for ELT Main Unit