Electrical Check - Liquid Controls LectroCount3 Installation Procedures Manual

4.

Electrical Check

Before beginning to install the LectroCount
following checklist. If the vehicle electrical system cannot meet the following
requirements, corrective action must be taken before installing the LectroCount
checklist is also included with the system. That copy should be filled out and filed with
the distributor or truck builder. NOTE: Contact the factory if the truck has a positive
ground.
The truck system must meet the following requirements:
Battery terminals and cables must be in good condition with clean, corrosion free
q
connections.
Battery must be charged in accordance with manufacturer's specifications.
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The alternator must be large enough to meet the total demands of the truck,
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including the LectroCount
operation. A typical alternator size is 90 amperes.
If the truck has a history of electrical problems, make sure that these problems
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have been corrected before installing the LectroCount
Inspect all truck electrical/electronic equipment for proper installation.
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Determine if the truck is positive or negative ground. (If the system is positive
q
ground, contact the factory).
Be sure that the radio antennas were installed in accordance with the
q
manufacturer's specifications to prevent RF interference.
To ensure that these requirements are met, check the voltage across the battery
terminals under the following conditions:
With the truck running at low idle, and all accessories off, the voltage should be between
12.6 and 18 VDC.
With all the accessories (lights, heater, radio, and radio mike) on, the voltage must be
between 12.6 and 18 VDC. If the voltage drops significantly when the accessories
are turned on, it may indicate that the alternator will not be able to support the
3
LectroCount .
Extend the delivery hose to its full length, engage the hose reel and measure the voltage
as the hose is reeled in. It shouldn't drop below 10VDC.
With the truck running at high idle, and all accessories off, check the voltage. Again it
should be between 12.6 and 18 VDC.
Repeat the hose reel test with the truck at high idle. Make sure that the voltage does not
drop below 10 VDC.
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, it is essential that you complete the
3 3
. LectroCount requires 5A minimum for proper
LectroCount
Vehicle Inspection Check List
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. This