User manual

Table Of Contents
tightened. A thin coating of non-metal, anti-seize, thread compound should be applied to the
screws before they are threaded into the titanium pressure housing.
NOTE
McLane recommends Lub-O-Seal’s NM-91 non-metal anti-seize thread compound for the MMP
controller and motor housings. Replacement cap screws used with the titanium housings should
be 316 stainless steel. Contact McLane for additional spares if necessary.
Tighten the controller housing end cap screws evenly and carefully. The end cap should
slide smoothly into the pressure housing. Visually check that wires are not caught between the
end cap and the housing
Glass Spheres
After each deployment, visually inspect the glass spheres to check for signs of fatigue
caused by repeated pressure cycling. Inspect the inside for: (1) excessive glass dust, (2) large
shards of glass, (3) spawls on the equator, (4) water.
IMPORTANT
If signs of fatigue are present the sphere should be replaced at McLane. The installation of new
glass spheres requires re-ballasting. A re-glass, re-ballast service is available at McLane.
Battery Maintenance
Lithium Battery Pack
The MMP is powered by a high-capacity lithium battery pack. Twenty-four double-D
cells are assembled in two layers inside the pack. Electrically the pack is arranged in eight
parallel stacks of three cells in series. The nominal delivered voltage is 10.8 V. The nominal
energy capacity of the battery is 240 Ahr.
NOTE
Wrap the alkaline batteries in non-conductive plastic, or tape the contacts to prevent discharge.
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