Monaco 2008 LaPalma XL Owner'S Manual Download

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lP-Gas systems —

lp-gaS regulator

LP-Gas is compressed into liquid form in the

tank. Only the vapor is used during combustion

by an appliance. As vapor is removed from

the tank, the remaining liquid will vaporize
to maintain pressure that is removed during

consumption. This process will continue until

there is no liquid remaining in the tank.

Temperature affects the vaporizing action of

the liquid. If temperature of the liquid is - 44º

F, the liquid remains stable with tank pressure,

about 0 psi. 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 LP tank may

cause erratic pressure regulation. If there is any

corrosion, contact a qualified LP-Gas 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 an

LP-Gas regulator will not freeze, nor will the

LP-Gas. Vapor passing through the regulator

will expand and cool, condensing moisture in

the gas. 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 LP-Gas 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 an LP-Gas distributor purge the

tank.

Have the LP-Gas 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 petroleum 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 LP-Gas pressure checked for proper

pressure and accurate regulation during

appliance operation. Erratic pressure regulation

dramatically affects refrigerator operation on

LP-Gas.

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
LP-Gas appliances until the LP-Gas
pressure is checked and a leak down test
is performed!

Manometers:

The manometer is the best way to accurately

determine LP-Gas pressure. There are two

different styles of manometers: Gauge and

U-tube. Gas 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.

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