
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Part No. 920160 Rev A
February 1997
6.
Defective Cash/Credit Interface board.
Check for signals to Cash/Credit Interface board. Replace
board as necessary. Refer to the appropriate drawing in
APPENDIX B.
7.
If blender, Blend ratios may not agree
with console.
Set blend ratios to agree.
8.
Defective computer.
Replace computer assembly.
TABLE 6-8. COMPUTER RESETS BUT SUBMERSIBLE PUMP DOES NOT COME ON.
Probable Cause
Corrective Action
1.
Solenoid drive board not turning on relay.
Check F1 fuse on drive board. Replace as necessary.
2.
Defective solenoid drive board. Check for
110 VAC output from board.
Replace board if no output.
3.
Defective relay.
Replace relay.
4.
Faulty station wiring.
Correct wiring.
5.
If 110 VAC is present at drive board and
in dispenser j-box, but not at relay panel,
problem is in station wiring.
6.
Defective computer assembly.
Replace computer assembly.
TABLE 6-9. COMPUTER RESETS BUT DOES NOT DISPENSE PRODUCT.
Probable Cause
Corrective Action
1.
F1 on Solenoid drive board.
Replace if it is open.
2.
Non-Blenders - Solenoid drive board or
Computer Assembly defective. Check for
110 VAC output.
Blenders - Check for 24VDC output
from solenoid drive board.
All dispensers - Also see Table 6-8.
Non-Blenders - replace solenoid drive board if there is no
110 volt output.
Blenders - if there is no 24 VDC output at J3, but there is 24
VDC input at J4, replace Solenoid Drive Board. If there is no
24 VDC input at J4, check F1 fuse on 24VDC power supply
board. If fuse is open replace it if not soldered in, otherwise,
replace computer assembly.
3.
Non-Blender - Defective actuator coil.
Blender - Defective proportional valve.
Non-Blender - Check coils for continuity; if open circuit
replace coil.
Blender - Check coils for continuity; if open circuit replace
defective proportional valve.
4.
Non-Blender - Defective/stuck actuator
or diaphragm.
Check both valves. Replace or rebuild as necessary.
TABLE 6-7. COMPUTER WILL NOT RESET. (continued)
Probable Cause
Corrective Action
Summary of Contents for Dresser Vista 1 Series
Page 1: ...1 Vista Series Blending and Non Blending Remote Dispensers SERVICE ...
Page 4: ...Part No 920160 Rev A February 1997 ...
Page 10: ...viii Part No 920160 Rev A February 1997 ...
Page 12: ...2 Part No 920160 Rev A February 1997 ...
Page 22: ...12 Part No 920160 Rev A February 1997 ...
Page 38: ...28 Part No 920160 Rev A February 1997 ...
Page 62: ...52 Part No 920160 Rev A February 1997 ...
Page 76: ...66 Part No 920160 Rev A February 1997 FIGURE 7 8 NOZZLE BOOT ASSEMBLY LIFT TO START ...
Page 77: ...67 February 1997 Part No 920160 Rev A FIGURE 7 9 NOZZLE BOOT ASSEMBLY PUSH TO START ...
Page 83: ...73 February 1997 Part No 920160 Rev A APPENDIX A TROUBLESHOOTING FLOWCHARTS ...
Page 110: ...100 Part No 920160 Rev A February 1997 ...
Page 111: ...101 February 1997 Part No 920160 Rev A APPENDIX B SERVICE INFORMATION AND CONNECTOR PIN OUTS ...
Page 134: ...124 Part No 920160 Rev A February 1997 ...
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