Liquid Controls LCRII Install E3650-E3651 Series - Manual (Page 28)

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PoWeR InsTallaTIon
Power Installation overview
When you have made all of the data connections and finished installing all of the components, connect the power to
the LCR-II and the Epson printer. But before making the power connections, go through the vehicle system checklist
below, and ensure that the electrical system of the truck meets the minimum requirements for powering the LCR-II
and the Epson printer.
vehicle system Checklist
□ Clean any corrosion from the battery terminals and battery cable to guarantee a solid, tight connection.
□ Charge the battery in accordance with the manufacturer’s specifications.
□ Ensure the alternator is large enough to meet the total demands of the truck, including the LCR-II. The LCR-II
requires a minimum of 5 A for proper operation. Run the truck at low idle with all accessories on (including
hose reel), and check the voltage with a multi-meter. The voltage should not drop below 11 V.
□ Inspect the electrical equipment on the vehicle, and ensure it is properly installed and operating correctly.
□ Determine whether the vehicle is grounded positively or negatively. Consult Liquid Controls if the vehicle
has a positive ground.
□ Make sure that any radio antennas are installed in accordance with the manufacturer’s specification to
prevent RF interference.
Connect the Power
All LCR-II shipments typically include a 40' gray power cable (100', and 300' are also available) and a 7.5A fuse.
40’ GRay PoWeR Cable
The gray power cable (PN 84046) is prewired to the j6 terminal on the CPU board at the factory. It includes two
16AWG wires and a ground drain wire. The 7.5A fuse should be spliced into the red 16AWG wire as close to the
power source as possible.
ePson PRInTeR PoWeR
Power must be supplied to the Epson printer as well. A 15' cable with a 12/24VDC converter (825001) for printer
power supply is also available. The red wire of this cable must be spliced into the red wire of the gray power cable on
the LCR-II side of the 7.5A fuse.
To connect power to the lCR-II and the epson printer:
1. Route the gray power cable to the accessory panel. See page 17.
2. Splice the red wire from the printer power cable into the red wire of the gray power cable.
3. Splice the 7.5A fuse into the red wire. Make the splice close to the direct power terminal connection in the accessory panel and
on the power side of the splice made with the printer power cable.
4. Connect the red wire to the direct power supply terminal in the accessory panel.
5. Connect the black wire of the gray power cable to a reliable DC ground.
6. Connect the black wire of the printer power to a reliable DC ground.
7. Tape the green drain wire of the gray power cable back against the power cable.
Page 17 describes the best practices for routing the gray power cable to the truck cab’s accessory panel.