Universal Scheu Company L60 - Manual (Page 26)

Page 26
TROUBLESHOOTING (continued)
Should malfunctions occur, the following procedure should determine where the
problem is:
1. Remove label web from the machine.
2. Turn the switches “ON”.
3. Trip the product-sensing switch. The drive roll should start turning.
4. Slide the label web down under the star wheel, or (through the photo electric or
clear label sensor) until the star wheel turns up on a point and back down. The drive
roll should stop turning. If the L60 is equipped with photoelectric label sensing or a
clear label sensor, pass the label through the opening until the motor stops.
Drive Roll does not START, check the following:
1. Is the product-sensing switch plugged in side panel?
2. Is the product sensing switch malfunctioning? Check for make and break of
switch; listen for relay operation of electric eye.
3. Is the power module plugged into its receptacle securely? The power module is
found on the back of the front panel, inside the machine, and can be seen by
removing the top cover.
Drive Roll fails to STOP when star wheel turns over:
1. Remove three screws and pull off star wheel cover (See page 13). Lift up and let
down star wheel by hand; if drive roller still turns, remove spring from pin on star
wheel arm and pull Star Wheel Pivot Arm Assembly off. Activate the switch by hand.
If drive roll still turns, check for make and break with ohmmeter, and replace if
necessary.
2. Check quick disconnect connections for proper contact.
3. If Drive Roll stops when the switch is operated by hand, replace the star wheel
and adjust the star wheel assembly by loosening the two screws that hold the
backing plate and move it to a position where the star wheel will open the switch
when it turns on a point. (See page 12 for star wheel adjustment procedures).
If these adjustments fail to correct the problem, reset the power module. This can
be accomplished by removing front panel. Make sure that you ground yourself
before touching the circuit board. Static electricity can damage the board. Place
fingers on each side of circuit board. (DO NOT TOUCH ELECTRICAL
COMPONENTS ON BOARD.) Move board side to side and push down to be sure
board is seated in contacts on bottom.