Hobby Van Exclusive - Page 106

Electrical Installations
07-10
Thevoltageofthecaravanbatterymustriseif
- theenginespeedisabovetheidlingspeed,
- thevehicle‘sbatteryisnotcompletelydischarged.
Thecontrolpanelshowswhetherornotthegeneratorhas
beencharged.Ifthisisnotthecase,pleasecheckthefollow-
ing:
• Isthe50Afuseinthesupplylinetotheancillarybattery
nearthemotorbatteryfunctioningproperly?
• Isthefusedistributionpaneldisplayingthe“Motorrun-
ning”signal?
Operation by means of a 12 V caravan battery
Alloftheequipmentisautomaticallysuppliedfromthecara-
vanbatteryifthemotorhomeisstandingstillwithouta230
Vmainssupplyandwithitsengineturnedoff.The12Vmain
switchmustbeswitchedonandthebattery‘scircuitbreaker
mustbeclosed.
Thecaravanbatteryshouldonlybeallowedtodischargeto
avoltageof11V.Atthispoint,youshouldensurethatitis
rechargedfromthedynamoorfrompublicsupply.
Ifthisdoesnothappenafterusingthebuilt-inbatterycharger
tochargethebattery,checkthefollowing:
• Isthechargerattachedcorrectlytothepowersupply?
• Isthecharger’smainsfuseworkingproperly?
• Isthecharger’sbatteryvoltageover3volts?
• Aretheancillarybattery’spolesattachedcorrectly?
Operation when the motor is running
Assoonasthemotorisrunning,arelayconnectsthestarter
batteryandthecaravanbatteryinparallel.TheD+signalsits
close to the dynamo. Therefore, the dynamo charges both
batteries.IftheD+signalnolongersitsclosetothedynamo,
thetwobatterieswillbeseparatedfromeachotheragain.In
thisway,thestarterbatterycannotbedischargedbyequipment
inthecaravan.
The12Vsupplyfortherefrigeratoronlyfunctionswhenyou
aredriving.Ifthemotorhasstopped,the12Voperationofthe
refrigeratorisautomaticallyturnedoffagain.
Checklist
• Turnoffthemotor.
• Switchonthe12Vmasterswitch.
• Turnoffallequipmentthatuses12V.
• Startthemotor.
To charge a discharged caravan battery optimally while
driving,disconnectthe12Voperationoftherefrigeratorand
turnoffasmuchequipmentaspossiblethatuses12V.