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SETTINGS AND ADJUSTMENTS
SECTION 4-32
Setting and Adjusting the Cradle Jackscrew
CHECK THE CRADLE CLOSED-POSITION SWITCH
When the screen cradle is fully closed, the cradle front flange should be
parallel with the down stroke knife block and the cradle wedges should
engage the cradle freely. If this does not occur, or if the jackscrew
motor continues to run when the cradle is fully closed, the jackscrew
internal limit switches must be adjusted.
If the jackscrew motor continues to run beyond the closed position,
STOP THE JACKSCREW MOTOR IMMEDIATELY TO AVOID
SERIOUS DAMAGE TO THE CRADLE JACKSCREW. Adjust the
jackscrew closed-position limit switch.
If the cradle stops before it reaches the closed position, the jack- screw
closed-position limit switch must be adjusted as described in the topic
entitled Adjust the Jackscrew Closed-Position Limit Switch, which
follows.
The jackscrews, which open the machine, should not operate until
the rotor is completely stopped. If you discover that the jack-
screws DO operate while the rotor is still turning, immediately shut
down the machine and call for maintenance to adjust it.
Make sure that no one is near the jackscrew or screen cradle during
operation.
Actuate the screen cradle jackscrews by turning the selector
switch to RAISE at the jackscrew console.
Hold the switch in position until the cradle approaches the
closed position described previously. TO AVOID
SERIOUS DAMAGE TO THE JACKSCREW, STOP THE
JACKSCREW MOTOR AS SOON AS YOU OBSERVE
THAT THE MOTOR DOES NOT STOP AT THE
PROPER LOCATION. If necessary, adjust the cradle-
closed-position limit switch as described in the topic
entitled Adjust the Cradle Closed-Position Limit Switch
that follows.