Dixie Narco DNCB 168, Руководство по обслуживанию и устранению неисправностей

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12. Problem:
Display shows "LOC".
Troubleshooting: A) Can only be accessed via DEX or hand-held.
B) Check control board.
13. Problem:
Will not show vend price on display.
Troubleshooting: A) All vend prices on primary price have to be the same price, and all prices on secondary
price have to be the same price.
14. Problem:
When programming, the display takes 30 to 45 seconds to go from one program to another.
Troubleshooting: A) Unplug the coin mech and then program the SIID control box.
15. Problem: Display goes blank when you press a given select button.
Troubleshooting: A) Check for bad vend motor on selection pressed. (Wire broken at coil or possible spade
pulled out)
16. Problem: Set price, unplug vender, plug in vender and price changes to 99.95.
Troubleshooting: A) Check battery. Follow steps to check.
1. Unplug vender.
2. On Ardac boards, locate component LH5168D-10L at U6 on board.
On DeAmertek boards, locate component LH5168D-10L at U2 on board.
3. Set volt meter to test DC voltage.
4. Put one test lead on pin 14.
5. Put other test lead on pin 28.
6. Volt meter should read minimum 2 VDC.
7. If bad battery (under 2 VDC), replace the board.
17. Problem: All segments stay illuminated on display.
Troubleshooting: A) Toggle to proper setting (14 segment versus 7 segment).
B) Connector harness loose at display board.
C) Check for bad connection or broken, backed out, or crossed wires is display harness.
18. Problem:
Plug in vender and "1-1-1-1" scrolls across the display. Press the service switch and "EN#" is
displayed.
Troubleshooting: A) Check control board.
REFRIGERATION PARTS AND FUNCTIONS
- MECHANICAL PARTS -
COMPRESSOR MOTOR
The compressor motor (sealed in the compressor housing) drives the compressor with a shaft that is shared by
both parts. It is started by the temperature control switch and the starting relay. It is stopped by the temperature
control switch, and, if it gets overloaded, by the thermal overload switch.
COMPRESSOR
The compressor (sealed in the compressor housing) draws cold, low pressure refrigerant gas from the
evaporator and pumps hot, high pressure refrigerant gas out to the condenser.
CONDENSER
The condenser, located in the base of the vender, at the front, takes heat out of the hot, high pressure gas that
comes from the compressor. The gas loses heat as it goes through the condenser coils, and changes into a
liquid because it is still under pressure.
CONDENSER FAN
The condenser fan (between the condenser and the compressor motor), first draws air from the outside of the
vender through the condenser. This air takes heat from the condenser first and then is blown over the