116
C.4
C.4 Maintenance
The Safety Tow Float is a low-maintenance piece of equipment. Heed these few simple instructions to keep the float in
good working order.
C.41 Checklist
• Grease all O-rings with Kryox lubricant monthly.
• Check acoustic pinger battery levels monthly to ensure they are above 3V.
• Remove the CO2 cartridge if the Safety Tow Float will be stored for more than a week.
• If the buoyancy bag has not been deployed with the past three months, it should be manually deployed.
1. Fully charge the Safety Tow Float by plugging it into a powered-on EcoMapper (orange LED will light).
2. In the user interface, set the float’s “armed depth” to zero, and the “buoyancy bag delay” to one minute.
3. Arm the Safety Tow Float (red LED will light).
4. Unplug the Safety Tow Float from the EcoMapper.
5. After one minute the buoyancy bag will deploy (float will beep 60 times prior to deployment).
6. Follow instructions in section C.3 to replace the buoyancy bag and CO
2
cartidge.
C.42 Acoustic Pinger Battery Replacement
If you check the pinger battery charge level in the user interface and find that their charge is below 3V you should
replace them as soon as possible to ensure continued pinger functioning. The batteries should last 12-18 months
before they need to be replaced.
The batteries are two Lithium ½ AA 3.6V HC Cylinder batteries and are available at DigiKey—
(Tadarin Part No. TL-5902/S).
1. Unscrew the four small Phillips screws at the front portion of the vehicle.
2. Gently and firmly pull the end away from the rest of the float body to reveal the batteries.
Be sure not to pull too hard and damage the wiring.
3. Replace the batteries. Be sure to note the polarity during the removal of the old batteries.
4. Press the end back into the float body; service the O-ring should the need arise.
5. Replace the four small Phillips screws.