11
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 over-filled 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. Two different
styles of manometers are 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.
propane hoSe InSpectIon
The hose manufacturer suggests that a flexible propane supply hose undergo
regular inspection. As a guideline, we suggest that all flexible propane lines
connecting the slideout, 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 that has kinked or been flattened so as to permanently deform the wire braid in the
unpressurized state.
Blistering or loose outer cover.
Slippage evident by the misalignment of the hose and coupling and/or the scored or exposed area where
slippage has occurred.
NOTE:
Only a qualified RV service technician should complete replacement of propane components.
050260
050259kb
Propane
Tank
U-Tube test
