EElleeccttrriiccaal l ssyysstteemm 1100..55
IInnttrroodduuccttiioonn AATTLLEET T SSEERRVVIICCE E MMAANNUUAALL
Edition 2010AEdition 2010A
10 10 Electrical Electrical systemsystem
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1100..11 IInnttrroodduuccttiioonn
1010.1.1.1.1 CoCompmpoonenent nt ddesescrcripiptitioonn
The electrical system consists of:The electrical system consists of:
•• a 4a 48 8 VVololt bt batatteteryry
•• aan n AATTCC
•• a da dririvve re reeggululaatotorr
•• a pa pumump p rereggululaatotorr
•• a numbea number of sensr of sensors, boors, both microth microswitch switch types (mtypes (mechaechanicalnical/mag/magnetic) anetic) andnd
analogue-digital types.analogue-digital types.
•• indinductuctive ive sesensonsors rs for for stesteereringing
•• contcontactoractors fos for cr conneonnection ction of of the the power power circucircuitsits
•• electrelectric motic motors ors for dfor drivinriving the g the geargearbox abox and hnd hydrauydraulic pulic pumpmp
•• elelecectrtromomagagnenetitic brac brakeke
•• elelecectrtric ic ststeeeeriringng
•• eelleectctrriic c ffananss
•• eleelectrctricaically olly operperateated hyd hydradrauliulic vac valvelve
Trucks equipped for use in cold storage facilities have Trucks equipped for use in cold storage facilities have enclosed cabs includingenclosed cabs including
electric heating and lighting as electric heating and lighting as optional equipment.optional equipment.
Some trucks are equipped with Some trucks are equipped with radio equipment.radio equipment.
Other electrical installations may be Other electrical installations may be encountered due to specific customerencountered due to specific customer
requirements. These are not taken up in requirements. These are not taken up in this Service Manual.this Service Manual.
1100..11..22 SSaaffeettyy
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•• ElectElectric powric powered vehered vehicles cicles can be danan be dangerogerous. All teus. All testingsting, trouble s, trouble shootihooting anng andd
calibration must be carried out calibration must be carried out by authorised personnel. The drive wheel shouldby authorised personnel. The drive wheel should
run free of the frun free of the floor and be able to rotate freely loor and be able to rotate freely during work.during work.
•• TTake off waake off watchetches, necks, necklaceslaces, brace, bracelets and rilets and rings befngs before startiore starting repang repair andir and
troubleshooting work.troubleshooting work.
•• The elThe electricectrical systeal system has a mulm has a multi-stati-stage safge safety sysety system to protem to provide thvide the highee highestst
possible level of possible level of safetysafety. Abnormal conditions are . Abnormal conditions are detected and depending ondetected and depending on
the type of fault different measures are implemented. The least criticalthe type of fault different measures are implemented. The least critical
condition only generates a warning via condition only generates a warning via the displaythe display. Faults that may . Faults that may result inresult in
dangerous situations result in a stop dangerous situations result in a stop and trouble shooting assistance via theand trouble shooting assistance via the
error log.error log.
•• The baThe battery muttery must alwast always be dys be disconisconnectenected with all red with all replaceplacement anment and repad repair workir work
on the electrical system.on the electrical system.
•• It is esseIt is essential thantial that all cabt all cables (esles (especipecially the bally the battery cattery cableables) are cos) are connectnnecteded
correctly as the electronics used in the truck are sensitive to incorrectlycorrectly as the electronics used in the truck are sensitive to incorrectly
polarised supply voltage.polarised supply voltage.
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