Ikelite 6961.85 User Manual page 11

1. Lightly lubricate the Port Base O-ring. When properly lubricated,
the o-ring should have an even, slightly shiny appearance. Wipe off
any excess lubricant. Lubricant prevents the o-ring from rolling or
extruding; it is not a sealing mechanism. Use ONLY Ikelite lubricant.
Thumb Screw
Port Base
O-ring
2. If using a zoom sleeve, place it over the lens with the teeth side
facing away from the housing.
3. Rotate all three thumb screws counterclockwise so that
approximately 4 threads are visible. This will allow the port to slide
over the Port Base.
4. Slide the lens port onto the Port Base and press evenly down
toward the housing until it stops. There should be a very thin, even
gap between the bottom of the port and the housing front.
5. Rotate all three thumb screws clockwise until they are snug against
the port. DO NOT overtighten.
Dome
Port
Port Base
11