1
2009
K
night
Propane Sy
stems - 7
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 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.
pROpANE HOSE INSpEcTION
The hose manufacturer suggests that a
flexible propane supply hose undergo regular
inspection. As a guideline, it is recommended
that all flexible propane lines connecting the
slide-out, appliances and tanks be inspected in
the spring and fall of each year by a qualified
RV technician.
Inspection tips:
Hose strength is controlled by the plies of
reinforcement. Damage in this area cannot
be tolerated. It is important that if a damaged
propane hose is found, the source of the
damage be determined and corrected prior to
the replacement. Small cuts, nicks, or gouges
that do not go completely through the cover
are not cause for replacement of the hose.
Inspection should be performed when the hose
is not under pressure.
NOTE
Pricking of the cover in the
manufacture of this type of hose is
common and necessary for satisfactory
hose performance. Consequently, the
uniformly pricked cover should not be
viewed with alarm.
Cause for hose replacement:
Damage to the textile reinforcement or
wire braid; wire braid reinforced hose,
which has been kinked or flattened
so as to permanently deform the wire
braid in the un-pressurized state.
Blistering or loose outer cover.
Slippage; evidenced by the
misalignment of the hose and coupling
and/or the scored or exposed area
where slippage has occurred.
CAUTION
Only a qualified RV service technician
should complete replacement of
propane components.
050259sa
050260
Manometer Gauge
U-Tube Testing Layout
Summary of Contents for 2009 Knight
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Page 46: ...42 2009 knight Driving Safety 2 Weighing Procedure Worksheet Example Worksheet 020255b conv...
Page 47: ...43 2009 knight Driving Safety 2 Weight Record Sheet Actual Worksheet 020255b 020263...
Page 52: ...48 2009 knight Driving Safety 2 Notes...
Page 152: ...148 2009 knight Water Systems 6 Notes...
Page 182: ...178 2009 knight Electrical Systems House 8 Notes...
Page 201: ...197 2009 knight Electrical Systems Chassis 9 engine no start flow chart...
Page 202: ...198 2009 knight Electrical Systems Chassis 9 Notes...
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Page 260: ...256 2009 knight Index Notes...