Allegro RED Owner's Manual - Tiffin Motorhomes

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TIFFIN MOTORHOMES –ALLEGRO RED® Chapter 7 ELECTRICAL FEATURESBattery Inspection and CareThe 12-VDC electrical-power system consists of four 6-VDC batteries wired in a series-parallel combination toprovide a final 12 VDC system (Figure 7-5) providing up to 450 Ampere-hours (A-hr) of service.As the batteries contain a significant amount of electrical energy, they must be handled with due diligence andcare. Some of the routine precautions include:CautionDisconnect the 120 VAC electrical power cord and the negative terminal from thecoach batteries BEFORE working on the Allegro RED electrical systemWarningRemove rings, metal watchbands, and any other metal jewelry before workingaround batteries. If any metallic object (tool, jewelry, etc.) contacts the positivebattery terminal or any connection made to that terminal AND also contacts thenegative terminal or any of its connections, a SEVERE ELECTRICAL SHORT willoccur which could result in an explosion, fire, and/or personal injury. Lead-acidbatteries contain diluted sulfuric acid which can be dangerous; avoid direct contactwith any battery fluids. Wear eye protection.CautionIf the Allegro RED ever requires any welding operations on the frame,first disconnect the chassis batteries. Failure to do so will destroy allof the chassis computer system.When batteries are not used for extended periods of time, they will gradually lose their electrical charge. Therefore, itis necessary periodically to recharge the batteries to increase the operational lives of the batteries. It is also necessaryto check the external condition of the batteries on a regular basis. Look for cracks in the battery case and cover. Checkthe vent plugs and replace them if they are cracked or broken. Keep the battery clean.Since accumulations of dirt and acid residue around the battery terminals may provide an electrical path fordischarging the battery, the area around the terminals should be cleaned periodically. One can use an old toothbrushand a sparse amount of a diluted solution of baking soda (sodium bicarbonate) and water (distilled or de-ionized,preferred; tap water, acceptable) to clean and neutralize any acidic build-up around the battery terminals. If there is anyforming on the top of the battery, this indicates that acidic residues are being neutralized.7-4
TIFFIN MOTORHOMES –ALLEGRO RED® Chapter 7 ELECTRICAL FEATURESRinse the cleaned areas thoroughly with distilled or de-ionized water (tapwater is okay, too). Avoid getting the baking-soda solution into thebattery fill plugs to each battery cell; this would drastically reduce theeffectiveness of the battery (by neutralizing the sulfuric acid in the batterycells) or, worse, “kill” the battery.Dry the battery cables and terminals to prevent corrosion; to protectthose terminals further, use a plastic ignition spray on the terminals. Donot use grease on the terminals, especially on the metal-to-metalconnections, as grease may act as an insulator and keep the batteryelectrical power from entering the cable.If the Allegro RED is to be stored for an extended period of time, the 12VDC battery system should be disconnected—this will preventunnecessary drain and corrosion of the batteries and their terminals. Todisconnect batteries, simply turn the house battery switch to “off.” Youwill also find this switch located in the battery compartment box.Figure 7-5. 12 VDC Battery SystemAdditionally, the batteries will, over time, lose some of the water usedwith the sulfuric acid in the batteries. Following manufacturer’srecommendations as found in the Owner’s Information Package,periodically check the fluid levels in all the cells of the batteries (be sureto use safety eyewear during this process) and fill those that are low withwater (distilled or de-ionized water is preferred; tap water is okay). Don’toverfill the cells; follow the filling directions exactly. This battery checkupshould be done on a regular basis to realize the fullest service possiblefrom the batteries over the longest time possible.The batteries are installed on a sliding tray (Figure 7-6) which allows youto extend out of the compartment to check battery and water levels.Located inside the compartment is a handle (Figure 7-7) that must bepulled in order to release the slide tray.Figure 7-4. Battery DisconnectPanelFigure 7-7. Handle7-5
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Allegro RED Owner's Manual - Tiffin Motorhomes

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