4. Pre-Dive Procedures and Operation
1.
Remove the protective cap by unscrewing the cap in a counter-clockwise motion,
being sure to hold the Leak Sentinel body to avoid loosening the Leak Sentinel from
the camera housing.
2.
Gently press the translucent button on the rubber valve in a downward motion,
until the switch clicks, which can be felt by the finger.
3.
The red LED will give one long blink, then will start blinking steadily, indicating the
circuit is active. At this time, ambient pressure is measured and memorized by the
unit.
4.
Detach the tubing from the pump cap. Screw the pump cap into the valve body.
Attach the tubing back to the pump cap.
5.
Start pumping by pulling in and out on the pump handle, or by simply pressing the
pump’s ON button in case you are using the Leak Sentinel electric pump.The LED
should start alternating with a red and green LED light. The red and green
alternating LED is indicating that a pressure change is detected and the circuit is
active.
6.
After the number of strokes needed to achieve the proper vacuum, which depends
on the housing volume, the green LED will perform one long blink, then keep
blinking steadily. Stop pumping after two consecutive green blinks after the long
green blink.
7.
Detach the tubing from the pump cap and remove the pump cap.
8.
Replace and tighten the protective cap. Be sure the protective cap o-ring is
lubricated with a small amount of o-ring grease.
Now, observe the LED. If the green LED still blinks after 15-20 minutes then no
leakage is present and the housing is ready for immersion in water. If the green LED
stops blinking and the alternating red-green or red LED starts blinking, there is a
leak, so it is not safe for any type of immersion in water. If there is a leak, then a
procedure for locating and eliminating the cause of the leak should be followed. Be
sure and test the camera housing again with the Leak Sentinel after any repairs are
made to the camera housing and/or its o-rings.
