Gas Vapor Detector - Regal LS4 Owner's Manual

Gas Vapor Detector

If equipped, a gas vapor detector is a state of the
art fume monitoring and alarm system. It is a highly
effective detector of engine compartment gasoline
fumes from unburned hydrocarbons emitted from
faulty exhaust systems and hydrogen battery vapors.
The unit operates with a head unit at the helm, a
sensor located in the bilge installed just above the
normal accumulation of oily bilge water. A 3 amp
fuse (for over current protection) is located behind
the helm which can be accessed by lifting up the
starboard bow backrest cushion.
The display panel at the helm features 3 windows.
The top green window indicates the system is
operational. The center yellow window indicates
there is a fault in the system. This notifi es the user
to check the connections and wire runs of the
sensor. There may be a break in the wire or the
sensor may be disconnected. The lower window is
the red warning indicator indicating a fume buildup
of 20% of the LEL (Lower Explosive Limit) which is
considered an alarm.
Should this condition last for longer than 10
seconds, the alarm horn will sound.
To check for fumes, turn the ignition key to the "on"
position. the green power on LED will show on
and the red warning LED may light momentarily to
indicate a warm-up period for the sensor. The alarm
horn will not sound during this period. The alarm
will continue as long as vapors are present. The
alarm horn may be silenced by pressing the "mute"
switch, the the Red warning light will remain on until
the vapor problem has been resolved. Note that the
problem should never be considered corrected until
red warning light is out.
If the red LED begins to glow softly and or
intermittently, it is an indication that the gasoline
vapor build-up is beginning to occur and you can
anticipate a full alarm momentarily.
Immediately have all passengers and crew exit the
passenger compartment. If an explosion or fi re
should occur, the probability of injury will be greatly
reduced if no one is in a confi ned area of the vessel.
In the event of an alarm it is important to understand
that an alarm would not occur unless a problem
existed. Carefully check all fuel lines, gas lines, and
any other potential sources of gas leaks.
The head unit can be tested for electrical continuity
by pressing the "Test" switch. The Red LED will
come on. The light will glow as long as the switch
is held down. If the test switch is held down longer
than 10 seconds the horn will sound and the
"MUTE" switch must be pushed to silence the horn.
Unplug the sensor wire from the helm display head
while the unit is powered up. The Red LED will
illuminate and within 10-15 seconds the alarm horn
will sound.
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