Norcold N620 Service Manual
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Contents
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Service Manual 5This refrigerator operates on propane gas at a pressure of10.5 inches Water Column min. to 11.5 inches Water Columnmax.WARNING: Be very careful when working on or nearthe propane gas system.- Do not smoke, or use an open flame near thepropane gas system.- Do not use an open flame to examine for leaks.- Do not connect the refrigerator to the propane gastank without a pressure regulator between them.- To avoid possible propane gas leaks, always usetwo wrenches to tighten or loosen the gas supplyline connections.- Leaking propane gas can ignite or explode andresult in dangerous personal injury or death.Examine the gas supply system for leaks:WARNING: Do not allow the leak detecting solution totouch the electrical components. Many liquids areelectrically conductive and can cause a shock hazard,electrical shorts, and in some cases fire.Using a solution of liquid detergent and water, make sure thegas supply line and all gas connections have no leaks. Donot use any liquid that contains ammonia.If you use compressed air for the test:- The pressure of the compressed air at the manualshutoff valve of the refrigerator must not be more than 1/2psig (14 inches Water Column).- If the pressure of the compressed air is more than 1/2psig (14 inches Water Column), remove the gas supplyline from the manual shutoff valve of the refrigeratorbefore the test.- If the pressure of the compressed air is equal to or lessthan 1/2 psig (14 inches Water Column), close themanual shutoff valve of the refrigerator before the test.Ventilation RequirementsWARNING: The completed installation must:- Make sure there is sufficient intake of fresh air forcombustion.- Make sure the living space is completely isolatedfrom the combustion system of the refrigerator.- Make sure there is complete and unrestrictedventilation of the flue exhaust which, in gas mode,can produce carbon monoxide. The breathing ofcarbon monoxide fumes can cause dizziness,nausea, or in extreme cases, death.Certified installation needs one lower intake vent and oneupper exhaust vent. Install the vents exactly as instructed inthe “Installation Manual”. Any other installation method voidsboth the certification and the factory warranty of the refrigera-tor.The bottom of the opening for the lower intake vent, which isalso the service access door, must be even with or immedi-ately below the floor level. This allows any leaking LP gas toescape to the outside and not to collect at floor level.If the vehicle has two side wall vents, the minimum distancefrom the floor level to the top of the upper exhaust vent is 55inches on N6__ models and 62 inches on N8 __ models.American Gas Association/Canadian Gas Association (AGA/CGA) certification allows the refrigerator to have zero (0) inchminimum clearance at the sides, rear, top, and bottom. Whilethere are no maximum clearances specified for certification,the following maximum clearances are necessary for correctrefrigeration:Bottom 0 inch min. 0 inch max.Each Side 0 inch min 1/2 inch max.Top 0 inch min. 1/4 inch max.Rear 0 inch min. 1 inch max.These clearances plus the lower and upper vents cause thenatural air draft that is necessary for good refrigeration.Cooler air goes in through the lower intake vent, goes aroundthe refrigerator coils where it removes the excess heat fromthe refrigerator components, and goes out through the upperexhaust vent. If this air flow is blocked or decreased, therefrigerator may not cool correctly.Each NORCOLD model is certified by AGA and CGA forcorrect ventilation.Propane Gas Components |
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