PROPANE SYSTEMS — 7
152
20 08 CONTESSA
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 lled 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 exible
propane supply hose undergo regular inspection.
As a guideline, we suggest that all exible
propane lines connecting the slide-out, appliances
and tanks be inspected in the spring and fall of
each year by a qualied 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 attened 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.
Additional suggested maintenance:
After performing extensive testing the
manufacturer of the exible propane supply
hoses has determined that the hoses be
replaced every ten (10) years as the failure
rate may increase after this period of time.
The motorhome manufacturer recommends
following this guideline to assure continued
safety and dependable use.
PROPANE DISTRIBUTION LINES
A primary manifold black steel pipe running
throughout the motorhome distributes propane
to secondary lines.
050259ra
U-Tube Testing Layout
050280d
U-Tube Testing Layout
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