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14. SOFTWARE PART NUMBERING SYSTEM
Prefix
Product
Dispensed
Security Valve
Type
Temperature
Compensation
Portable
Ram
# of Products /
# of Meters
Application
SC
1 LPG
0 Single/Dual Stage
0 Linear/degree F
0 Required
0 single/single
Three digit
2 Refined Fuels
1 Diddle Valve
1 Linear/degree C
1 Not Req'd
1 multi-/single
e.g. 158
3 Aviation Apps.
2 Selectable in Prover
2 Table 54B/D API 2540
2 multi-/dual
4 NH3
3 Table 54 API 2540
3 single/dual
4 NH3 Table Canada
4 24 product
5 Mass Flow (No Comp)
6 Table 54B/C &
Methanol
15. TROUBLESHOOTING
Troubleshooting Rules
1. Before attempting to troubleshoot the LectroCount
3
System, become familiar with the
operation and program of the specific installation.
2. Make sure all electrical connections are secure.
3. Make sure all circuit cards are firmly connected.
4.
ALWAYS
use a good digital multimeter. Voltage levels are critical to proper system
operation. Use an accurate, reliable multimeter to test for proper voltages at the start
of any service procedures. Voltage requirements are listed under each component.
NOTE: Check for proper operating voltages before changing modules.
5. Enter Mode 7 – diagnostics by pushing
M#, 7, and ENTER.
Make sure all field
programming entries are accurate, e.g., pulses per unit volume, temperature
coefficient, base temperature, and maximum pulser reversals.
6.
NEVER
remove a connector with the power on.
7.
NEVER
install a connector with the power on.
8.
NEVER
force a connector into a connector receptacle.
9.
NEVER
exchange or reposition components on circuit boards.
10. In case of a major problem, such as a burned circuit board, evaluate possible causes
before replacing the module and turning on the power.
11. Isolate the problem before changing modules.
12. Be careful when handling ribbon cable. Ribbon cables can be easily damaged.
13. Return all faulty modules with the proper forms, concisely completed.
