Specifications

Note: the step num bers (i.e. Step 1,
Step 2, etc.) which fol low cor re spond to
those listed in Fig ure 4-1.
4.3.1 (Step 1) Re move ELT
Con nec tions
Loosen the thumb screws on the end
cap. Pull the end cap away from the
ELT. Lift up the Pro tec tive Top Cover
and push away from the con nec tor end
of the ELT to re move. Lay Pro tec tive
Top Cover aside. Re move all in ter con nec -
tions to the ELT unit and ELT an tenna.
Vi sually in spect and con firm proper seat-
ing of all con nec tor pins. Spe cial atten-
tion should be given to co ax ial cen ter
con duc tor pins which are prone to re tract -
ing into the con nec tor hous ing.
4.3.2 (Step 2) Re move ELT
Lift the ELT up from the con nec tor end
(care ful use of a flat blade screw driver
as a le ver makes this step eas ier) to re-
move the ELT unit from its mount ing tray.
In spect the mount ing hard ware. En sure
the hard ware is free of cracks or other
ob vi ous dam age. All re quired mount ing
hard ware should be in stalled and se cured
and must meet the in teg rity re quire ments
as de fined herein.
4.3.3 (Step 3a) Re move Bat -
tery Pack
NOTE: The bat tery pack con tains
static sen si tive parts, take ESD pre cau -
tions be fore han dling. Re move the four
screws from the bat tery pack. Be fore pro-
ceed ing fur ther, read the fol low ing ad vi-
sory to avoid dam age to the ELT. For
de tailed in struc tions re fer to Sec tion 4.5
and Fig ure 4-4.
WARNING: The bat tery pack is con
-
nected to the ELT via short in ter con nect
har nesses which limit the dis tance of
sep a ra tion be tween the two com po nents
prior to dis con nect ing the har nesses. Pro
-
ceed as fol lows:
• Lay the ELT on its side.
•
Care fully lift the bat tery pack away from
the ELT and lay along side the ELT
unit.
• Care fully dis con nect the har ness from
the 8-pin con nec tor on the small cir cuit
board in the bat tery pack. Do not short
con nec tor pins.
• Dis con nect 2-pin har ness from the ELT
body.
In spect the bat tery pack and the un der -
side of the ELT. The bat tery cells, com -
po nents and con nec tors should be free of
cor ro sion. The un der side of the ELT
should be cor ro sion free. In spect for any
bro ken wires or con nec tions. En sure the
bat tery hous ing is free of cracks or other
vis i ble dam age.
Ver ify the bat tery ex pi ra tion date. If the
bat tery pack has not ex pired it may be
re in stalled. How ever, for op ti mum per for -
mance, it is rec om mended that the bat
-
tery be re placed if the volt age un der load
is less than 12.0 vdc. The bat tery pack
must be re placed with a new one:
• Af ter use in an emer gency;
• Af ter an in ad ver tent ac ti va tion of un -
known du ra tion;
•
When the to tal of all known trans mis
-
sions ex ceeds one hour;
ARTEX AIRCRAFT SUPPLIES DOCUMENT # 570-5000
06/30/99 PAGE 4-4
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 breakage.