Electrical System - Perkins 1204F-E44TA Operation And Maintenance Manual

20
Safety Section

Electrical System

Use the Emergency Stop Button (if equipped) ONLY
in an emergency situation. Do not use the
Emergency Stop Button for normal engine stopping.
After an emergency stop, DO NOT start the engine
until the problem that caused the emergency stop
has been corrected.
Stop the engine if an overspeed condition occurs
during the initial start-up of a new engine or an
engine that has been overhauled.
To stop an electronically controlled engine, cut the
power to the engine and/or shutting off the air supply
to the engine.
Electrical System
Never disconnect any charging unit circuit or battery
circuit cable from the battery when the charging unit
is operating. A spark can cause the combustible
gases that are produced by some batteries to ignite.
To help prevent sparks from igniting combustible
gases that are produced by some batteries, the
negative "−" cable should be connected last from the
external power source to the primary position for
grounding.
Check the electrical wires daily for wires that are
loose or frayed. Tighten all loose electrical
connections before the engine is started. Repair all
frayed electrical wires before the engine is started.
See the Operation and Maintenance Manual for
specific starting instructions.
Grounding Practices
i05380506
Illustration 15
Typical example
(1) Ground to the battery
(2) Primary position for grounding
(3) Ground to starting motor and starting motor to engine block
Illustration 16
Typical example
(4) Ground to the battery
(5) Ground to the cylinder block
Correct grounding for the engine electrical system is
necessary for optimum engine performance and
reliability. Incorrect grounding will result in
uncontrolled electrical circuit paths and in unreliable
electrical circuit paths.
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