GSi Grain PNEG-1509, Руководство по устранению неисправностей и справочник

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Wiring Reference Troubleshooting
Pneg 1509 - Troubleshooting
47
TESTING PROCEDURES AND
LOCATION OF GRAIN SENSORS
heater or two fan/heaters. If you suspect a bad sensor always check at the heater board
of wires and the other probe to the orange set. It should read som ewhere close to the
chart on page . Exam ple: Tem perature 70 degrees Fahrenheit - should read about 12K
abov e. ( Next Page )
nected to J3-03. W hat you are checking is the resistance of the (therm istor) sensor
according to the tem perature in the grain colum n. Disconnect the two sets of wires and
with your ohm m eter, set your scale to 20K. Put one m eter probe on the white/black set
on your m eter, If this doesn't = 12K go back to the white junction boxes as indicated
On a stack dryer with m ultiple fan/heaters the sensors will be term inated on the bottom
heater board of the second m odule. It does not m atter if the second m odule has one fan/
first. You will hav e two white/black wires connected to J3-04 and two orange wires con-
The grain sensors are finally term inated at the heater board located in the fan heater
box. Single m odule with two fans, grain sensors are wired to bottom heater board.
Right Fixed
Grain High Limit &
Temperature Sensors
Left Fixed
Grain High Limit &
Temperature Sensors
GRAIN T EMPERATURE SENSORS
(
GAIN ACCESS T O THEM BY REMOVING COVER
OFF OF 4"x 4" W HIT E BOXES)
* SEE BELOW FOR T ESTING PROCEDURES
Load M otor
Load M ercury
Switch
Outside Light
Upper
Control
Box
FAN #1
FAN #2
Air Switches
Lower
Control
Box
Load
M otor
SCR
Maxon
Plenum #1
Plenum #2