Fantasea Line FA6400 Instruction Manual page 38

System Care & Maintenance
1. In between the dives, use the wrench included to make sure
the Vacuum Valve is tightly screwed into its port and was not
accidently loosened when unscrewing the Protective Cap. Fit
the wrench around the edges of the Vacuum Valve base and
turn it clockwise until encountering fair resistance (image #42).
Do not over tighten the Vacuum Valve to prevent the port or
valve from being damaged.
2. The O‐ring positioned between the Vacuum Valve and its port
should be annually maintained:
a. Remove the Vacuum Valve from its port using the
wrench. Fit the wrench around the edges of the
Vacuum Valve base and turn it counterclockwise until the valve has been completely
unscrewed.
b. Visually inspect the O‐ring featured at the base of the Vacuum Valve. If there is any
debris present, including dirt, sand, dust, hair or any other matter, it must be cleaned to
ensure a proper watertight seal.
c. In order to clean the O‐ring, first remove it from the Vacuum Valve.
d. Cleaning the O‐ring is a simple matter of wiping it with a damp, soft cloth to remove the
foreign matter. Be careful the cloth you use does not leave any of its own material
behind as this can also affect the effectiveness of the seal.
e. Apply a slight layer of Fantasea Silicone Grease on the O‐ring. Note that the amount of
lubrication required on the O‐ring is only enough to allow it to slip into place without
friction, so it does not twist or become dislodged. More grease is not necessarily better,
and in some cases might interfere with the watertight seal of the housing.
f. Reinstall the O‐ring and then reinstall the Vacuum Valve using the wrench.
g. Confirm that the housing watertight seal hasn't been interfered using the vacuum pre‐
dive check prior to diving with the housing again.
3. Never soak or wash the interior of the housing with water. This will cause irreparable damage
to all Hybrid Vacuum Safety System electronic components!
38
FA6400 Housing Instruction Manual 20190416
Image #42