GSI Outdoors PNEG-630 User Manual
Page 105
Portable Dryer Troubleshooting
104
Procedure for Locating, Testing and Replacing
a Defective Grain Temperature Sensor. (continued)
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 Resistance/Temperature chart page 62.)
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
conduit.
18.
Remove the tape surrounding the defective grain sensor then remove it.
19.
Place your new sensor upon the capillary then apply tape to 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 wire 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 only going to use one. The dryer will operate fine with only one sensor with
the exception of only being able to monitor one small section of the grain columns.
1.
On the side of the dryer in which sensor is defective, 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 white grain sensor wires and connect it to the
white 18 ga. wire.
Grain Sensor