Table of Contents
Advertisement
SECTION 5:
MAINTENANCE
1. Arm the release and orient it horizontally. Using the deck unit, send the ENABLE command. The
instrument should reply with a series of 7 pings at a 2 second rate indicating the instrument is
tilted more than 45 degrees and not released.
2. Send the RELEASE command. The instrument should release and reply with a series of 7 pings at
a 1 second rate indicating the instrument is tilted more than 45 degrees and has released.
3. Interrogate the instrument using the Deck Unit set at the appropriate interrogate frequency for
the release being tested and tuned to the proper reply frequency.
It is unlikely that the Deck Unit will display a valid range because it is being tested in air, but you
should be able to verify that the instrument transmits a reply pulse by listening to the alarm on
the front panel of the Deck Unit.
4. Orient the release vertically (Transducer up) and send the DISABLE command. The instrument
should reply with a series of 15 pings at a 1 second rate indicating released and tilted less than 45
degrees. Now range on the instrument again with the deck unit. This time the unit should not
transmit a reply pulse.
It is good practice DISABLE the release after deployment, as ambient noise sources could run down the
battery.
Post Deployment
After recovery, the Unit should be cleaned and rinsed with fresh water to avoid salt buildup and
deterioration of mechanical parts.
A visual inspection of the Housing and release mechanism should be performed to detect any signs of
damage, excessive wear, corrosion, etc.
If the 8242XS is not to be used again soon, the Unit should be turned off (battery unplugged - follow
procedure described in sub-section 4.1).
If the Unit is to be stored for a long period of time, the batteries should be removed. See Maintenance
procedures in
S
6: M
ECTION
.
AINTENANCE
4-24
Advertisement
Table of Contents
