SECTION 9
9-23
01/01/2014
A5. DEFECTIVE DC MOTOR AND/OR BRUSHES.
A6. DEFECTIVE MANUAL SPEED CONTROL (RV1).
B1. SHORT CIRCUIT IN DC MOTOR AND/OR BRUSHES.
B2. SHORT CIRCUIT IN DC MOTOR DRIVE (SCR1).
B3. FEEDROLL MONITOR SYSTEM "OPEN" DUE TO: DEFECTIVE
FEEDROLL MONITOR SWITCH (SW8) OR CAM NUT, TIMER
RELAY(S) (K10, K11), OR METERING ROLLS STOPPING
BECAUSE OF JAMMED METERING ROLLS OR BROKEN CHAIN.
C1. DEFECTIVE MANUAL SPEED CONTROL (RV1).
C2. DEFECTIVE DC MOTOR DRIVE (SCR1).
C3. DC MOTOR DRIVE (SCR1) OUT OF CALIBRATION.
CORRECTIVE
ACTION: A1.
IF UNLOAD AUGER STARTER (S7) DOES PULL IN, CHECK
LOAD SIDE OF INTERLOCK (SW21) ON UNLOAD AUGER
STARTER (S7) FOR PRESENCE OF VOLTAGE (120 VOLTS).
IF VOLTAGE IS PRESENT AT LOAD SIDE OF INTERLOCK
(SW21), CHECK OPPOSITE SIDE OF INTERLOCK (SW21). IF
NO VOLTAGE IS PRESENT, THE INTERLOCK (SW21) IS
DEFECTIVE, REPLACE.
A2.
CHECK FUSE(S) LOCATED ON DC DRIVE (SCR1) IF
DEFECTIVE, REPLACE.
A3. IF VOLTAGE IS PRESENT ON TERMINAL #64 (120 VOLTS)
WITH METERING ROLL SELECTOR SWITCH (SW6) "ON" THEN
CHECK FOR VOLTAGE ON TERMINAL #75. IF VOLTAGE IS
NOT PRESENT THE METERING ROLL SELECTOR SWITCH (SW6)
IS DEFECTIVE, REPLACE.
A4. IF VOLTAGE IS PRESENT ON TERMINAL #75 (120 VOLTS)
WITH METERING ROLL SELECTOR SWITCH (SW6) "ON" THEN
CHECK FOR VOLTAGE (0 TO 90 VOLTS DC) ON TERMINALS
#73 (+) & #74 (-), IF VOLTAGE IS NOT PRESENT THE
SCR CONTROL IS DEFECTIVE, REPLACE. NOTE: IF THE
MOTOR IS DEFECTIVE THE DC DRIVE (SCR1) WILL SHOW NO
VOLTAGE ON TERMINALS #73 & #74, THERE MUST BE A
LOAD ON TERMINALS #73 & #74 TO COMPLETE THE TEST. A
DEFECTIVE MOTOR OR BRUSHES CAN RESULT IN DAMAGE TO
THE DC DRIVE (SCR1).
A5. DISCONNECT MOTOR WIRES AND CHECK FOR CONTINUITY. IF
NO CONTINUITY, CHECK BRUSHES TO INSURE BOTH BRUSHES
ARE MAKING CONTACT WITH THE ROTOR. IF THEY ARE NOT,
CLEAN OR REPLACE. IF BOTH BRUSHES ARE MAKING
CONTACT THE MOTOR IS DEFECTIVE, REPAIR OR REPLACE.
NOTE: A DEFECTIVE MOTOR OR BRUSHES CAN RESULT IN
DAMAGE TO THE DC DRIVE (SCR1).
A6.
DISCONNECT WIRES FROM THE MANUAL METERING CONTROL
(RV1) AND CHECK RESISTANCE OF CONTROL (0 TO 5K
OHMS), TURNING CONTROL KNOB 270 DEGREES. IF FULL
SPAN DOES NOT OCCUR OR SPIKES OCCUR REPLACE MANUAL
METERING CONTROL (RV1).
Summary of Contents for DPX12T
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Page 30: ...Page 6 05 06 13 Alarm Limit Indication Error Messages ...
Page 31: ...Page 7 05 06 13 ...
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Page 55: ...Page 17 Moisture Control All Models 6 21 2012 ...
Page 56: ...Page 18 Moisture Control All Models 6 21 2012 Alarm Limit Indication Error Messages ...
Page 57: ...Page 19 Moisture Control All Models 6 21 2012 ...
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Page 66: ...SECTION 7 7 1 1 13 2010 GRAIN SHRINKAGE TABLE SHRINKAGE WHEN GRAIN IS DRIED TO THESE LEVELS ...
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