Class1 FoamLogix 2.1A & 1.7AHP REV D - Manual (Page 44)

FoamLogix, Model 2.1A and 1.7AHP Class “A”
Electronic Foam Proportioning Systems
44
Control Unit
The control unit mounts in the operator panel of
the apparatus. The display is secured with four #8
socket head screws. (See Figure 19 “Control Unit
Mounting Dimension” for mount ing dimensions).
The display requires a 7” (178mm) minimum
clearance from the back of the operator panel to
allow proper connection of cables. Once the control
unit is mounted on the operator panel, attach the
14 pin AMP connector on the cable assembly to the
back of the display. Referring to Figure 20: “Control
Harness Connections” and Figure 21: “System
Power and Ground Connections,” on page 45, make
connections to the motor controller box and flow
sensor.
Notes: Ensure that the panel where the control unit
is mounted has an adequate ground. For stainless
steel and vinyl coated panels a ground strap ½ inch
(12mm) wide must be attached from one of the four
screws holding the control unit in place to the frame
of the fire truck to ensure adequate grounding.
Allow a service loop to prevent “pulling” of the wires
or connectors during body and frame flex.
Display Unit Power and Ground
Connections
Power must be connected directly to the display
unit. The power and ground connec tion is the 2-pin
packard connector on the 12”(305mm) long pigtail of
the harness (see Figure 20 on page 45).
The mating harness provided is approxi mately 18”
(457mm) long. If additional wire length is required,
use minimum 16 AWG type SXL, or GXL (SAE
J1128) wire.
Connect the black (B) wire to a chassis ground
stud. Protect the ground connection from
corrosion.
Connect the red (A) wire to the power supply. It
is recommended to connect the power wire to
a minimum 5 AMP, fused, dedicated circuit. If a
dedicated circuit is not available, the power lead
may be connected to a termi nal where there is
not a HIGH current load. Acceptable additional
components powered from this terminal include
ENFO IV, Gover nor, Tank Level Gauge, Etc.