Brodie AB295, Installation And Operation Manual, Page: 21 / 32

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Figure 7: Setting Clearances 9.0 Troubleshooting
This information has been provided as an aid to
basic troubleshooting. Disassembly procedures
have been outlined in section 9 of this manual. If
the BiRotor Plus is found to be in need of repair it is
recommended the user contact the nearest Brodie
International Service Office or Representative. It is
important that servicing be performed by trained
and qualified personnel.
Condition A: No Pulse Output is Present
Probable Cause:
1. No flow through meter.
2. Improper electrical connection.
3. Insufficient voltage to the preamplifier (if fitted).
4. Power failure.
5. Meter rotors jammed with debris.
6. Damaged pickoff/amplifier board.
Corrective Actions:
1. Ensure the pipe line has flow.
2. Ensure proper wiring connections have been
made.
3. Supply sufficient voltage to the preamplifier
board, see specifications in Section 6.
4. Ensure power is connected to the device and all
it associated ancillaries.
5. Remove debris from rotors (check for damage to
rotors, timing gears and bearings).
6. Replace pickoffs/preamplifier board.
Condition B: Erratic or Non Uniform
Pulse Signal
Probable Cause:
1. Improper electrical connection.
2. Insufficient or fluctuating voltage to the
preamplifier board (if fitted).
3. Improper ground or shielding of connection
cable.
4. Power failure/damaged pickoffs or circuit board.
5. Damaged/worn bearings or timing gears.
Corrective Actions
1. Ensure proper wiring connections have been
made.
2. Supply sufficient voltage to the preamplifier
board, see specifications Section 6.
3. Replace and/or wiring ground and shield.
4. Ensure power supply is functioning or pickoffs/
board as required.
5. Replace bearings or timing gears.