Specifications

Smeal Pumper Demo # 4276
Page 48 of 58
Harnesses shall be modular in design; a main harness system subdivided into several smaller sub-
harnesses. The harness subsections shall be connected using Deutsch branded, heavy duty,
environmentally sealed, connectors with silicone seals and a rear insertion/removal contact system. For
isolation of electrical "zones" the harness subsections shall consist of a main harness, a pump harness
with a separate pump gauge panel harness, a left body harness with a separate left compartment
harness, a right body harness with a separate right compartment harness, and a rear body harness with
two separate rear compartment harnesses.
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The main harness and three body harnesses shall interconnect at a central, easy to reach location and
their connectors shall not be obstructed by other harnesses or fuel/air lines. In addition, the main and
body harness connectors shall be color coded for ease of identification with their respective colors noted
on the accompanying electrical diagrams.
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Where connectors are not provided by the electrical component manufacturer, all 12 volt lights and other
electrical components (excluding rocker and toggle switches) shall connect to the harnesses using
Deutsch brand connectors; butt connectors are considered unacceptable.
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All Deutsch connectors shall meet the following criteria:
 All connectors shall have a minimum IP67 rating.
 Temperature range from -67°F (-55°C) to 257°F (125°C) continuous at rated current.
 Only solid contacts will be used. Stamped and formed contacts are unacceptable.
 All contacts shall be soldered unless a crimping tool or machine is used that gives an even and
precise pressure for the terminal being used.
 All contacts shall be pull-tested to insure their integrity.
V-MUX ELECTRICAL MANAGEMENT SYSTEM
The apparatus shall be equipped with a V-MUX Multiplex System. There are several key benefits to
multiplexing, one is to reduce the number of connections in a vehicles electrical system, because of this it
is important to limit the amount of modules that control certain functions of the vehicle.
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Outputs:
The outputs shall perform all the following items without added modules to perform any of the tasks:
1. Load Shedding: The System shall have the capability to Load Shed with 8 levels any output. This
means you can specify which outputs (barring NFPA restrictions) you would like Load Shed.
Level 1 12.9v, Level 2 12.5V, Level 3 - 12.1V, Level 4 - 11.7V, Level 5 11.3V, Level 6 10.9V,
Level 7 10.5, Level 8 10.1. Unlike conventional load shedding devices you can assign a level to
any or all outputs. No add-on modules shall be acceptable; the module with the outputs must
perform this function.
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2. Load Sequencing: The System shall be able to sequence from 0 8 levels any output. With 0 being
no delay and 1 being a 1 second delay, 2 being a 2 second delay and so on. Sequencing reduces
the amount of voltage spikes and drops on your vehicle, and can help limit damage to your