ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
B406-4 (453-5004)
Page 61 of 70
25-62-03
8)
Fit the battery pack into place on the ELT, while dressing the wires away from the standoffs to avoid
pinching the wires between the standoffs and battery pack.
9)
Turn the battery pack bottom face up to facilitate installing the screws, while securely holding the ELT
and battery pack together.
10)
Install the four battery pack retaining screws about half way (i.e., leave them loose).
11)
Tighten and torque the screws as shown in Figure 24 Battery Pack Retaining Screw Tightening Pattern.
Torque to 6-8 lb-in (68-
90 N•cm).
Figure 24 Battery Pack Retaining Screw Tightening Pattern
12)
Perform an ELT self-test as follows:
a)
Set the ELT local control switch in the “ON” position. The LED will begin flashing every 3
-4 seconds.
b)
Return the switch to the “OFF” position after 1
-2 seconds. If the ELT is working properly, the LED
will stay on for approximately 1 second and then flash the following expected error codes, which
should be ignored.
6.
1-flash and 3-flash errors, which are generated because the ELT is not installed and
connected to an antenna, etc.
7.
A 5-flash error will be indicated if the ELT is programed with a location protocol, and is
generated because the ELT is not connected to the navigation system and receiving
position data.
c)
If a 7-flash error code is indicated, there is a problem with the battery or battery connection wiring.
Refer to Table 6 on page 37.
SUBTASK 25-62-03-450-002
B.
New Battery Installation
CAUTION: DO NOT USE CONTACT CLEANER ON ELT COMPONENTS. SUCH CHEMICAL AGENTS CAN
BE HIGHLY DESTRUCTIVE TO THE MOUNTING HARDWARE AND ELT HOUSING, CAUSING
CRACKING, FRACTURING AND OTHER DAMAGE.
1)
This subtask applies to installation of a new (i.e., replacement) battery.
2)
Verify the bottom of the ELT is clean and free of battery corrosion residue. Clean as necessary.
3)
Remove the paper backing from the rubber seal at the connector end of the battery pack.
4)
Perform the procedure outlined in SUBTASK 25-62-03-990-002.
5)
Place a new battery expiration date label on the ELT mounting frame cap or other visible location.
NOTE:
The new label is supplied with the new battery pack.
6)
Enter the pertinent battery replacement information in the logbook (i.e., aircraft records) and fill out any
other required documentation.