MAINTENANCE
6-18 / Electrical
© 2018 Pierce Manufacturing Inc. All Rights Reserved.
The main difference between AC and Direct Current (DC) systems if that the voltage levels in DC systems remain
constant, while the voltage levels in AC systems are constantly changing. When measuring an AC system, it is
important to know that the average voltage is zero and that is why
A VOLTMETER SET TO DC WILL NOT
INDICATE THE PRESENCE OF AC VOLTAGE WHEN CONNECTED TO AN AC CIRCUIT!
High voltage can be lethal. Always refer to the high voltage equipment manufacturer’s service information when
maintenance or repairs are needed. In most cases, diagnostics and repair are performed after the high voltage
circuits are disabled. If you work around or maintain high voltage circuits, please seek high voltage training.
6-16.2 Auxiliary Power Units (APUs)
NOTE:
High voltage APU wiring may NOT be marked for easy identification as high voltage.
APUs are basically small diesel powered generator units that are integrated into the vehicle’s electrical system.
APUs are utilized in combination with inverters and battery chargers. APUs are often set up to automatically start
when the electrical management system deems it necessary to maintain battery charge or when the electrical
demand requires it.
6-16.3 Shore Power
NOTE:
High voltage shore power wiring may NOT be marked for easy identification as high voltage.
Shore power is a connection from a vehicle to and external 120V AC power source. The vehicle is equipped with an
exterior receptacle that allows connection to an external “shore” power source.
6-16.4 Inverters
NOTE:
High voltage inverter wiring may NOT be marked for easy identification as high voltage.
Disconnect power before removing any line voltage breaker box cover or junction box cover or working
on line voltage wiring. Follow National Electrical Code safe practices. Electrical shock can injure or kill.
To avoid property damage, personal injury, or death, refer to the manufacturer’s service information
before working on any high voltage equipment. By definition, high voltage circuits and components
contain voltage levels that may cause equipment damage, electrical shock and/or electrocution if
handled incorrectly.
All electrical circuits associated with Auxiliary Power Units (APUs), shore power, and inverters should
be considered high voltage.
To avoid property damage, personal injury or death, circuits must be checked using a voltmeter for the
presence of both DC and AC voltages. A voltmeter set to DC will not indicate the presence of AC voltage
when connected to an AC circuit. Contacting an unknown AC or DC voltage may cause equipment
damage, electrical shock and/or electrocution.
Only trained technicians may perform service inside high voltage components. If you work around or
maintain high voltage circuits, please seek high voltage training.
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Страница 1: ... 2018 Pierce Manufacturing Inc Part No PM C OM014 SEN 0718 Operator s Manual Saber Enforcer ...
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Страница 18: ...FOREWORD 1 6 To the Owner and Operator 2018 Pierce Manufacturing Inc All Rights Reserved ...
Страница 30: ...SAFETY 2 12 Safety and Responsibility 2018 Pierce Manufacturing Inc All Rights Reserved ...
Страница 62: ...GENERAL 4 20 Controls Indicators and Features 2018 Pierce Manufacturing Inc All Rights Reserved ...
Страница 122: ...OPERATION 5 60 Driving the Vehicle 2018 Pierce Manufacturing Inc All Rights Reserved ...
Страница 180: ...LUBRICATION AND MAINTENANCE INTERVALS 7 8 Scheduled Inspections 2018 Pierce Manufacturing Inc All Rights Reserved ...
Страница 184: ...A 4 2018 Pierce Manufacturing Inc All Rights Reserved ...