3-18. PREPARATION OF THE ICE VEST FOR USE .
Ensure the ice vest had been properly stored, ready for use. Refer to paragraph 3-11.2.2.
Completely open pouch slide fastener (1).
Verify drain valve (2) is closed.
The ice vest holds an 8volt, 2.6 ampere hour rechargeable gel-type battery.
Loosen hook and pile fastener tape strap (3) around pump tray (4) and insert battery (5).