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Utilities & SystemsMain Supply Hose – Low PressureThe main supply hose (Fig. 23) will be attached from the regulator to the brass manifoldfitting in the frame of the trailer. The swivel brass nut on the main hose will be your finalattachment.Fig. 233/8" MPT x 1/2" FemaleFlare SwivelSeveral things to remember each time the propane container is removed:1. Check that ALL fittings are tight.2. Check that ALL connections are tested with leak solution. Consult with yourindependent, authorized dealer or propane service personnel.3. Open the main valve slowly to avoid a fast rush of propane to excess flow valvecausing propane freeze up. If you experience a propane “freeze-up,” close the mainvalve and wait at least fifteen (15) minutes before trying again. Refer to the documentfound with your trailer literature from the regulator manufacturer.4. Listen carefully - a “hissing” sound longer than one second may indicate a propaneleak. Close the valve and search for the leak.RegulatorThe regulator is in integral part of the propane system. It is required to reduce the pressureof the propane before it is sent to the system to operate your appliances. It is critical to yoursafety that you read, understand and follow all literature supplied with your unit on theoperation and maintenance of the regulator.WARNING: Propane regulators must always be installed with thediaphragm vent facing downward. Regulators that are not in acompartment have been equipped with a protective cover. Make surethat the regulator vent faces downward and that the cover is kept inplace to minimize vent blockage, which could result in excessivepropane pressure causing fire, explosion, death or serious injury.Jay Flight Conventional Travel Trailer and Fifth-Wheel Travel Trailer 63