CORE CONTACTOR MOTOR JAM

• COMMON CAUSES:
  1. CONTACTOR OVER INSERTION
  2. BAD ALIGNMENT FOR LATERAL AND HORIZONTAL POSITION ON THE CHUCKS
  3. BENT/WORN-OUT CHUCK GUIDE PIN
  4. WORN-OUT CONTACTOR RACK AND GEAR
  5. IMPROPER PLACEMENT OF TEMPERATURE CHAMBER
  
  
• THINGS TO CHECK
  1. CORRECT ALIGNMENT OF CHUCK LATERAL AND HORIZONTAL POSITION AT CONTACT POSITION
  2. INSERTION DEPTH OF CONTACTOR, IDEAL VALUES FROM 2.6 TO 2.8 INCHES.
  3. FAN SCREEN SHOULD NOT INTERFERE WITH SHAFT MOVEMENT.
  
  
• THINGS TO DO
  1. CONTACTOR MOTOR JAM
  2. PRESS STOP PRESS CLEAR JAM BUTTON
  3. IS THIS A NEWLY SET-UP HANDLER
     1. IF YES, CHECK PROPER ALIGNMENT OF CORE PICKER
     2. IF NO, THEN
  4. CHANGE BOARD
     1. IF YES, CHECK PROPER MOUNTING OF TOP COVER
     2. IF NO, THEN
  5. ARE ALL 4 CHUCKS ENCOUNTERING SAME JAMS THEN
  6. IF YES
     1. CHECK INSERTION DEPTH
     2. CHECK MECHANICAL GEARS OF CONTACTOR RACK
     3. CHECK FOR ANY OBSTRUCTION
     4. CHECK AND CORRECT FOR PROPER INTERFACE CONTACTS: TOP COVER/CHUCK GUIDE PINS/NESTS/SOCKETS/GUIDEPOSTS
  7. PROCESS "A": IF NO, THEN CHECK THE FOLLOWING ON THAT PARTICULAR CHUCK ALIGNMENT: CHUCK INTERFACE/GUIDE PINS/PROTRUDING SCREWS AND OTHERS
  8. IF INTERMITTENT
     1. IF YES, GO TO PROCESS "A"
     2. IF NO, CHECK FOR CORRECT ALIGNMENT OF CORE LATERAL AND A PROBABILITY OF OVER INSERTION