Genesis Manual Rev2.0 Copyright 2020, Nellis Engineering, Inc.
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residue must be cleaned off for them to properly function as anodes. Do not apply any lubricant
or protectant coatings to the anodes. They are sacrificial and must be allowed to corrode, to
protect the DPV. You may remove these 12 screws to inspect for corrosion on the threaded holes
in the tail cone. Grease the holes (using a toothpick to get the grease in side) and screws with
AquaShield (formerly know as AquaLube) marine lubricant from the DA Stuart Company prior to
reassembly and replace the anodes as necessary. Torque screws to 35 in-lb. Additionally, check
the torque on the 12 screws that attach the nozzle struts to the nozzle (torque 30 in-lb).
Vacuum & Pressure Testing
The test port on the nose of the DPV can be used for leak testing the DPV. A test gauge assembly
can be ordered from the factory or assembled by the owner with off-the-shelf fittings. A list of
materials is available on request. A bicycle pump is all that is required for a simple pressure test.
Procedure
1. Remove the battery assembly from the DPV and also the test port plug from the nose,
using an 11/16" socket.
2. Remove the screw from the small plate next to the connectors on the tail section.
This will allow air to flow freely between the tail and body. Failing to remove this screw can
give a false indication of a leak.
3. Install the body onto the tail section and install the lock strips as usual.
4. Install the test gauge into the test port only hand snug. Over tightening the fitting can
damage the anodizing and lead to corrosion at the test port.
5. Pressurize the DPV to 3-5 psi with a bicycle pump or similar.
Note
It is possible to have slight pressure changes during the pressure
test due to changes in temperature. Do not rely on visual gauge
indication of no pressure change, when ruling out a leak.
11. If a leak is suspected, the DPV should be immersed in water during the pressure test.
It will be significantly buoyant with the battery removed.
12. When finished, vent the body with the relief valve on the gauge assembly and remove it.
Reinstall the test port plug and the screw next to battery connectors.
