GSi Grain PNEG-1509, Руководство по устранению неисправностей и справочник, Страница: 46 / 70

Wiring Reference Troubleshooting
Pneg 1509 - Troubleshooting
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10. Connect the red lead to either of the disconnected 26 ga. wires and make note of the
reading.
11. Now move the red lead to the other disconnected 26 ga. wire and make note of this
reading.
12. Go to the other side of the dryer and repeat steps 6 through 11.
13. You will notice that 3 readings will be very close to the same, but one reading will be
different. This is your defective sensor. (Compare readings to Temperature/
Resistance chart on page .)
14. If you don't have a replacement sensor, jump to How to Bypass the Grain Temperature
Sensor.
Sensor Replacement:
15. The grain sensors are mounted to the grain overheat capillary and need to be removed
together.
16. To remove the overheat switch disconnect the grain thermal overheat wires.
17. Then remove the 2 self tapping screws and slide the bracket, overheat switch and
sensors out of the conduit.
18. Remove the tape surrounding the defective grain sensor then remove it.
19. Place your new sensor upon the capillary then apply tape and secure the sensor.
20. Slide the overheat switch and sensors back into the conduit until the bracket for the
overheat switch is in the same mounting position as before.
21. Replace both mounting screws back into the overheat switch mounting bracket.
22. Butt connect together one wire from each of the grain sensors.
23. Connect one of the remaining grain sensor wires to the black 18 ga. wire.
24. Connect the other remaining grain sensor to the white 18 ga. wire.
25. Connect one of the grain overheat switch wires to each one of the colored wires.
26. Reconnect the other side of the dryer following steps 22 through 24.
27. Double check the wire connections then replace the covers on the boxes.
How to Bypass the Grain Temperature Sensor:
The following instructions are for situations where you don't have an extra grain sensor to
replace the defective one. So now, we are going to rewire the sensors so that instead of
using 4 sensors to monitor the grain temperature with, we are going to use one. The dryer
will operate fine with only one sensor with one exception of only being able to monitor one
small section of the grain columns.
1. On the side of the dryer in which has defective sensor, leave this sensor and the joining
sensor disconnected from the white and black 18 ga. wires. Be sure to cap these 18 ga.
wires off.
2. On the other side of the dryer, take one of the small grain sensor wires and connect it
to the white 18 ga. wire.
3. From the same sensor that you connected to the white 18 ga. wire, connect the other
small white grain sensor wire to the black 18 ga. wire.
4. Double check the wire connections then replace the covers on the boxes.
PROCEDURE FOR LOCATING, TESTING & REPLACING
A DEFECTIVE GRAIN TEMPERATURE SENSOR
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