47
46
Fig. 4-23
LP GAS SYSTEM
It is because of the LP gas system that your RV has the convenience of a refrigerator,
stove, water-heater, and furnace. This system has containers that contain the fuel and also
regulators to control the pressure of the fuel and supplies the gas vapor to the various
appliances. When correctly used, the LP gas system is very effective and will ensure the
comfort and added convenience for your vehicle. This system is also potentially very
dangerous and should be used with care.
Liquefied petroleum (LP) is a product that is refined from crude oil through natural
gases. Propane is a colorless and odorless gas that in the liquefied state resembles water.
An odorant is added as a warning agent. This is usually a sulfur compound which gives
the gas the rotten egg, stinky, skunk oil odor. It is extremely important to become familiar
with the odor associated with LP gas.
LP gas is stored in a pressurized canister in a liquid state. As the fuel is released from the
canister, it becomes vapor that is needed for the operation of the appliances. In the liquid
state, propane should not run through the appliances. A liquid fuel will damage the
o-rings in the valves and also leave a sticky, oily residue causing poor or no operation in
the regulator.
LP Gas Container
The tank or “bottle” is a D.O.T. approved container to hold fuel in liquid form, and is
normally a 20# or 30# (9 or 14 kilogams) capacity. The open/close valve is to be closed
at all times unless hooked up to the LP gas system or filling the container. When the
container is disconnected from the hose, install the valve cover that is attached to the
container. This is required by the RV industry, Gas Association, and for your own safety.
Do not allow the container (filled or empty) to move or roll around while transporting to
and from the filling location.
1
WARNING:
Because your vehicle has exterior combustion air inlets,
all pilot lights, appliances and their igniters, (see instructions), must be
turned off before and during gasoline or LP gas refueling. Laws in some states
require this.
Servicing and Filling LP Containers
Filling an LP gas container correctly is very important and should be performed by a
qualified person who knows the proper inspection and safety procedures. Any new
container must be carefully purged for best performance and must NEVER BE OVER-
FILLED.
1
CAUTION:
DO NOT use tools to open or close the tank valve. HAND
TIGHTEN ONLY.
1
CAUTION:
Never smoke during the filling of LP gas tanks. Keep the RV
away from immediate filling area when possible or extinguish all gas pilot
lights.
LP gas expands 1½% for each 10° increase in temperature. It is imperative to leave
sufficient space inside the container to allow for the natural expansion of gas during
warmer weather. Each LP gas container is equipped with an overfill device built into the
main valve. This device must remain open during filling. When the container is filled to
80%, the maximum level for safety, a liquid will appear replacing the vapor. Stop filling
immediately and close both valves; HAND TIGHTEN ONLY.
1
WARNING:
A LP gas container must never be filled beyond 80% of
its capacity.
If your tank becomes overfilled and is not allowed to “bleed off” before installation to the
RV system, it may gain pressure from exposure to direct sunlight and will begin “blowing
off” pressure from the overflow valve. This will be detected by the strong odor around
the tanks. Keep open flames away from this area. It is best to find a technician qualified
in releasing an overfill from the container. If that is not possible, remove the container,
take it to a safe area at least twenty-five feet (10 meters) from any source of combustion,
and “bleed off” the excess pressure by opening the valve slightly and closing it when the
discharge has been sufficient, one to two minutes.
1
WARNING:
LP gas cylinders shall not be placed or stored inside the
vehicle. LP gas cylinders are equipped with safety devices that relieve
excessive pressure by discharging gas to the atmosphere
1
WARNING: Do not bring or store LP gas cylinders, gasoline, or other
flammable liquids inside the vehicle because a fire or explosion can result.
When an LP gas tank gets low, sometimes there is a concentration of garlic-like odor
which may be mistaken for a gas leak. After a change over to a full tank, the odor usually
will disappear. If not, turn off the LP gas containers and have the system checked by a
qualified technician.
1.
Knob to open valve to fill or to use camper.
2.
Complete valve assembly.
3.
“10%” valve, small brass knob or slot screw.
4.
Container mounting stand.
1
1
2
2
3
3
VAPOR
LIQUID
20%
VAPOR
SPACE
4
Содержание Conventional Travel Trailer 2003
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