Fairbanks FB2255 Series Instrument PC2255 PC Software Utility Program - Manual (Page 64)

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Section 7: Service and Maintenance
7.1. Troubleshooting the Instrument
DISPLAY SYMPTOM RESOLUTION
ERROR •
Possible bad battery or power loss
•
Program error
•
Replace the PCB.
•
Replace Battery
No Display No Power •
Check AC Input
•
Check battery voltage
Drifting/Unstable
•
Display changes at a rapid pace.
•
Loss of Excitation voltage.
•
Check for damaged load cell, load
cell cables, or bad main PC.
•
Measure the Excitation Voltage
(5VDC)
•
Use a Simulator to troubleshoot.
7.2. Battery Installation
STAINLESS STEEL INSTRUMENT
6. Unscrew the black plastic end caps.
7. Insert five (5) alkaline “D” cell batteries.
ABS INSTRUMENT
8. Unscrew the two large knurled screws on the back of the Instrument
9. Remove the battery cover.
10. Insert five (5) alkaline “D” cell batteries.
•
Industrial ‘D’ size Energizer EN95 battery or equivalent is recommended for
maximum operating time.
•
Stainless Steel models should have special formed key washers installed for
grounding.
– Four (4) screws fasten the back cover plate at the corners.
STAINLESS STEEL ENCLOSURE
ABS ENCLOSURE