Eureka Manta Manual
Page 46 of 67
3
Unscrew the eye-bolt until you are able to
completely remove the battery plug.
4
Remove the spent batteries and install six
C-cell batteries carefully following the
polarity diagram.
5
Clean all moisture, dirt, grit and any other
debris off the exposed O-ring surfaces and
the inside of the battery tubes. Add a small
amount of silicone grease to the O-rings
and to the inside of the battery tubes
where the O-rings will seat.
6
Re-attach the battery plug by turning the eye-bolt. You don’t have to tighten it closely to the Manta;
finger-tight is fine.
7
Remember that you must first activate Manta Logging by clicking the “Manta2 Logging is OFF” Hot
Button so that it changes to “Manta2 Logging is ON”. (C.3, E.5)
8
When you are ready to deploy the Manta, turn the battery switch to “ON”. (And turn the switch back
to “OFF” when you retrieve the Manta).
9
Remember to look for the red LED to blink five times to confirm that Logging is activated, and the
green LED blink briefly to confirm that the Manta is receiving adequate voltage to start Logging.
10
Your Manta is now logging and will continue logging until you turn the battery switch to its “OFF”
position, or your batteries are depleted.
E.8 Logging with an External Battery Pack
E.8.a The External Battery Pack
All Manta models (except the Manta 35 and 40 models with Internal Battery Packs) can utilize the optional
External Battery Pack, a watertight housing with a cassette for batteries that can be removed from the
Manta. Most EBP’s are used for logging, but they can also be used to power the Manta while it is
connected to a Data Display if the Data Display cannot provide sufficient power.
The EBP simply screws into the Manta multiprobe where normally you would find the Underwater Cable
and its locking sleeve. The EBP is installed immediately before a Logging deployment, and later removed
so your Manta can upload data to a Data Display or be calibrated.
