Instruction manual
ControlWave Gas Flow Computer (GFC Plus) Instruction Manual (CI-ControlWave GFC Plus)
Revised Feb-2013 Service & Troubleshooting 5-7
board. Carefully unplug the boards from their interface
connectors. Align the replacement boards with each other and
press them together so that the interface connectors and
mounting posts properly mate; then squeeze together so that the
mounting post tabs capture the CPU/System Controller board.
7. To install the replacement boards, power must be off. Align the
Process I/O board with the upper and lower guides so that the
CPU/System Controller board is on the right side. Slide the
boards (assembly) into the unit, making sure to re-connect the
MVT cable to CPU/System Controller board connector P1
before you fully insert the assembly.
8. Rotate the upper and lower locking tabs to secure the boards.
9. Replace all cables removed in steps 2 through 5 in reverse order.
10. Apply power and test the unit.
5.2.3 Removing/Replacing the Primary Battery System
Notes:
The primary battery system attaches to the inside of the battery
cover/radio mounting plate.
Make sure the replacement battery is fully charged before you install
it.
1. If the ControlWave GFC Plus is running, place any critical
control processes under manual control.
2. Open the cover and shut down the ControlWave GFC Plus by
disconnecting the power at the CPU/System Controller assembly
terminal TB1 (and if applicable, TB2).
3. Remove the battery wires from the CPU/System Controller
board connector TB1 (unplugged in step 2) making sure they
don’t contact each other.
4. Loosen the four screws that secure the battery cover/radio
mounting plate to the one-piece mounting bracket.
5. Slide the battery cover/radio mounting plate towards the top of
the unit so that its slots clear the mounting screws, and remove
it. If a radio or modem is present, carefully set the battery
cover/radio mounting plate to one side.
6. Carefully remove the primary battery system (with cables
attached).
7. To replace the primary battery system, reverse the steps you
performed from step 6 to step 3.
8. Re-connect TB1 (and if applicable TB2) to apply power and test
the unit.