Tiffin Motorhomes WAYFARER 2017 Owner's Manual page 25

SAFETY
Any overfilling of the LP gas container(s) can result in
uncontrolled gas flow—a prime condition for a fire
or explosion.
The LP container should only be filled to 80 percent
of its capacity; the remainder of the cylinder space is
an air space to contain expansion of that liquid when
subjected to varying ambient-temperature
conditions.
Filling in excess of 80 percent of the liquid volume of
the container reduces that air space and, thus,
creates a condition for possible over-pressurization
of the container. Figure 2-3: LP Tank
All LP appliances in your motorhome have been approved for use in motorhomes by a
nationally-recognized testing laboratory (i.e., UL and CSA certified). When properly used, LP gas
is a clean-burning fuel which can be dependably used. In actuality, the LP container contains
liquid propane under high pressure.
The liquid, when it passes through the tank valve to a lower pressure, vaporizes into a gas, and
then passes through a regulator to maintain a constant pressure. This gas, then, is the actual
fuel distributed through the LP-gas manifold system to the LP-based appliances used in your
motorhome.
LP-appliance lighting problems are typically caused by an improperly-adjusted gas regulator.
NEVER attempt to adjust or reset the gas regulator yourself. An authorized service technician is
needed to make these adjustments. As a good preventive-maintenance activity, the regulator
should be checked annually by a service technician and also before every extended trip.
Even though the LP-gas system is leak-checked and verified at the factory at the time of
manufacture, normal usage (travel vibrations, etc.) could loosen the fittings. Consequently, it is
wise to check the gas fittings periodically for leak tightness.
You can wipe some leak-detector solution (e.g., a "liquid-soap"-like solution) on all the fittings,
connections, and junctures when the system is under pressure. Should there be any leaks, small
bubbles will appear at any leak sites.
Generally, loose fittings can be tightened to stop the leaks. If this process doesn't work, then
you must shut off the main gas valve at the LP cylinder(s) and immediately consult an authorized
service technician to determine what repairs are necessary. Leaks may also be detected by
noting a sulfurous odor (i.e., rotten eggs). DO NOT search for a leak by using a match or open
flame.
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