167
2008 IMPERIAL
LP-GAS SYSTEMS — 7
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
fi
rst
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 quali
fi
ed 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 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
fi
lling.
Ensure the tank is not over
fi
lled.
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.
050251a
NOTE:
LP-Gas fundamental information is not a complete
guide for the use of LP-Gas tanks or appliances. In
cold climates keep LP-Gas level above 50% to keep
vaporization of LP-Gas at the highest level.
Содержание Rambler Imperial 2008
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Страница 120: ...APPLIANCES 4 116 2008 IMPERIAL NOTES...
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Страница 194: ...ELECTRICAL SYSTEMS HOUSE 8 190 2008 IMPERIAL ELECTRICAL LAYOUT TYPICAL 060191u...