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2012 Trip
If liquid temperature is 100º F, the liquid
quickly vaporizes with tank pressure, about
200 psi. Vapor pressure must remain relatively
consistent, regardless of temperature, for
the appliance heat output to remain stable.
Vapor pressure regulation is performed by the
regulator.
The two-stage regulator reduces vapor
pressure so that it is safe for use. The first
stage of the regulator reduces tank pressure
to a range of 10 to 13 psig (pounds per square
inch gauge). The second stage further reduces
pressure to a working pressure of 0.4 psig (11
Inches of Water Column or about 6¼ ounces
psi.). A vent is installed to allow the internal
diaphragm to move with atmospheric pressure
change. It is important to keep the vent clean
and clear of obstruction or corrosion.
If the vent becomes clogged, pressure from
the propane tank may cause erratic pressure
regulation. If there is any corrosion, contact
a qualified propane service technician. The
regulator is mounted so that the vent faces
downward. If the vent becomes clogged, clean
it with a toothbrush.
Under normal atmospheric conditions a
propane regulator will not freeze, nor will the
propane. Vapor passing through the regulator
will expand and cool, condensing moisture in
the propane. The moisture will freeze, build up
and block the vent. The possibility of freeze up
is greatly reduced with the two-stage regulator.
To Prevent Freeze Up:
Ensure the propane tank is totally free
of moisture prior to filling.
Ensure the tank is not overfilled.
Keep the valve closed when the tank is
empty.
If A Freeze Up Occurs:
Have a propane distributor purge the
tank.
Have the propane distributor inject
methyl alcohol in the tank.
Damage to the regulator can occur when the
tank is overfilled. The regulator is designed
to work with vapor only. This is why the tank
is filled to only 80% of its liquid capacity.
The other 20% allows for vaporization of the
liquid. The primary vapor valve is located in
the vapor section of the tank. In an overfilled
tank, liquefied propane can fill the regulator.
Vaporizing liquid can freeze the diaphragm.
High tank pressure on a frozen diaphragm
can cause a rupture and result in erratic
pressure regulation. This is why it is important
to have the propane pressure checked for
proper pressure and accurate regulation
during appliance operation. Erratic pressure
regulation dramatically affects refrigerator
operation on propane.
WARNING:
Do not attempt to adjust the regulator.
Adjustments require special equipment.
Failure to follow these instructions may
result in a fire or explosion, and can
cause severe personal injury or death.
Do not operate propane appliances until
the propane pressure is checked and a
leak down test is performed.
Manometers
The manometer is the best way to accurately
determine propane pressure. There are two
different styles of manometers: Gauge and
U-tube. Propane pressure is measured in
Inches of Water Column. This is the amount
of pressure applied to one side of a U-shaped
tube half filled with water. The amount of
pressure needed to raise the column of water
11" represents 11 Inches of Water Column.
TIP:
Attach the manometer gauge to
the accessory hookup line to avoid
loosening any interior propane line
connections.
TO APPLIANCES
FROM TANK
VENT
SECOND STAGE
LOW PRESSURE
REGULATOR
FIRST STAGE
HIGH PRESSURE
REGULATOR
050251
Содержание Trip 2012
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Страница 13: ...Notes...
Страница 45: ...40 Driv ing Safety 2 2012 Trip Weight Record Sheet...
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Страница 138: ...133 W ater Sy stems 6 2012 Trip Water System Diagram 040487va...
Страница 139: ...134 Wat er Sy stems 6 2012 Trip Notes...
Страница 151: ...146 Pro p ane Sy tems 7 2012 Trip Notes...
Страница 173: ...168 Ho us e Electr ical 8 2012 Trip Notes...
Страница 190: ...185 Chassis Electrical 9 2012 Trip Engine No Start Flow Chart...
Страница 191: ...186 Ch as s is Electr ical 9 2012 Trip Notes...
Страница 237: ...232 Ch assis 10 2012 Trip Notes...