vc999 RS420, Maintenance Manual

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TROUBLESHOOTING GUIDE
FILM INFEED FORMING
FILM ROLL FREE WHEELS
•
Check spanner nut on spindle tighten spanner nut on spindle
•
Check pneumatic brake operation
•
Check compressed air supply to brake
•
Check brake pad
•
Check tension roller springs
FILM ROLL STICKS DURING ROTATION
•
Check brake pad for proper orientation, replace pad if worn excessively
INFEED SPINDLE ALWAYS TIGHT (MAG. BRAKE ASSY.)
•
Check gap between magnetic brake, gap should be 0.000" to 0.003" ( 0.00mm to
0.076mm)
•
Check voltage at brake, should measure 0v dc to 6v dc as 5K
Ω
potentiometer is
rotated full left to full right (see magnetic brake calibration)
FILM INFEED NONFORMING
FILM ROLL STICKS DURING ROTATION (PNEUMATIC BRAKE SYSTEM)
•
Check brake pad for proper
•
Correct orientation, replace pad if worn excessively
FILM TRANSPORTATION SYSTEM
GRIPPERS DO NOT OPEN
•
Check chain tensioner
•
Remove half link
GAS FLUSH SYSTEM
NO GAS IN PACKAGE
•
Verify gas is "on " in the program
•
Check output Y11
•
Check gas line / gas tank
•
Clean gas nozzle or pins
•
Check pin height, notch in the gas pin should be just above the top of the seal gasket
surface
•
Make sure the punch is cutting the flap so that it opens on the formed pocket side
rather than the gripper chain side of the film edge
•
If the gas pin punch in the form die is not making an appropriate cut for pin operation
adjust the punch height in the form die bottom