Pressure Regulator - Winnebago Cambria Owner's Manual

SECTION 5
LP GAS

PRESSURE REGULATOR

The pressure regulator is protected from the
elements by a plastic cover which should be left
in place at all times. Only your dealer or a
qualified LP gas service should remove the
regulator cover for adjustments.
WARNING
Visually inspect the pressure regulator
vent periodically for blockage by
accumulated debris or insect nests, etc.
Vent obstruction could result in excessive
pressure which could cause a fire or
explosion.
If any obstruction is apparent, have the
regulator serviced by your dealer or a
qualified LP gas service center.
5-4
Regulator freeze-ups are caused by the
presence of moisture in fuel. This moisture will
pass through the cylinder valve and into the
regulator where it can freeze. Fuel producers,
tank and bottle manufacturers and LP gas dealers
take every precaution to reduce moisture, but
sometimes only a fraction of an ounce entering
the tank can cause problems. To help avoid the
possibility of freeze-up, always keep tank control
valve closed when not in use, even when tank is
empty, to prevent moisture from collecting on the
inside.
If regulator freeze-up should occur, you may
attempt to thaw the regulator using a light bulb.
DO NOT USE AN OPEN FLAME OR HEAT
LAMP.
If moisture begins to cause problems, have
your LP gas dealer inject a small amount of dry
methyl alcohol in your tank (approximately one
ounce to 20 pounds or one pint to 100 gallons) to
help guard against regulator freeze-ups.
In very cold weather when a large volume of
gas is being used for heating, it is possible to
experience a loss of gas pressure. At first, this
problem may appear to be caused by a regulator
freeze-up, but is actually caused by failure of the
liquid gas to vaporize as fast as it is needed. As
the temperature becomes colder, it is increasingly
harder for the liquid LP gas to vaporize. At the
same time, the demand for LP to produce heat
increases to the point where the system cannot
maintain production.