LP-Gas System
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2 0 0 2 N E P T U N E
7 • 212
The regulator is the heart of an LP-Gas system. The LP-Gas in
the tank is under high pressure. The regulator reduces the pres-
sure of gas so that it is safe to use with various appliances. The
regulator on the motorhome is a two-stage regulator. The first
stage regulator reduces the full tank pressure down to a range of
10-13 psig (pounds per square inch gauge). The second stage
further reduces the pressure down to an outlet pressure of 0.4
psig (11 inches of water column). The regulator is equipped with
a vent that allows it to breathe. It is important to keep the vent
clean and clear of obstructions or corrosion. If the vent becomes
clogged, pressure from LP tank could cause a failure of the
components. If there is any corrosion, contact a qualified LP-Gas
service technician. The regulator is mounted so the vent faces
downward. If the vent becomes clogged clean it with a tooth-
brush.
Under normal atmospheric conditions an LP regulator will not freeze, nor
will the LP-Gas. The gas passing through the regulator will expand and cool cre-
ating moisture in the gas. This moisture will turn to ice which can build up and
partially or totally block the orifice. The possibilities of freeze up is greatly
reduced with the two stage regulator.
To prevent freeze up:
1. Ensure the LP tank is totally free of moisture prior to filling.
2. Ensure the tank is not over filled.
3. Keep the valve closed when the tank is empty.
4. If a freeze up occurs, have an LP-Gas distributor purge the tank.
5. Have the LP-Gas distributor inject methyl alcohol in the tank.
WARNING: Do not attempt to adjust the regulator, it is pre-
set at the factory. If adjustments need to be made it
requires special equipment. Failure to follow these instruc-
tions may result in a fire or explosion and cause severe per-
sonal injury or death. Do not attempt to enter the
motorhome until the problem has been corrected!
LP-GAS REGULATOR
A typical Two-step Regulator.
OM050251
Summary of Contents for 2002 NEPTUNE
Page 12: ......
Page 28: ...General Information 2 0 0 2 N E P T U N E 1 28 NOTES...
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Page 73: ...Driving Safety 2 0 0 2 N E P T U N E 2 73 Rear View VIEWS Front View OM010726 OM010725...
Page 74: ...Driving Safety 2 0 0 2 N E P T U N E 2 74 Curbside View Roadside View OM010724 OM010723...
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Page 202: ...Water Systems 2 0 0 2 N E P T U N E 6 202 NOTES...
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Page 218: ...LP Gas System 2 0 0 2 N E P T U N E 7 218 NOTES...
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Page 279: ...Electrical Systems Chassis 2 0 0 2 N E P T U N E 9 279 NOTES...
Page 280: ...Electrical Systems Chassis 2 0 0 2 N E P T U N E 9 280 NOTES...
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Page 331: ...Chassis Information 2 0 0 2 N E P T U N E 10 331 MAINTENANCE RECORD...
Page 332: ...Chassis Information 2 0 0 2 N E P T U N E 10 332 MAINTENANCE RECORD...
Page 333: ...Chassis Information 2 0 0 2 N E P T U N E 10 333 MAINTENANCE RECORD...
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Page 337: ...INDEX...
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