laguna 37 x 2, Owner'S Manual

Page: 55 / 82

Mainteance 55
ADJUSTING TENSION ROLLERS:
With the sanding drums properly aligned, raise the table to the bottom of the sanding drums. Loosen all four
tension roller suspension bolts
(See Item #1 of Figure #28) . Lower the table by one full turn of the height
adjustment handle. At this position, the tension roller assembly should be resting on the table with the drums
suspended slightly above the table. Then retighten the tension roller suspension bolts.
Note: Too much tension roller pressure can cause snipe marks which are identified as a visible line running across
the width of the board approximately 2 1/4" from the end of the board. If a snipe mark occurs on the trailing end of
the board, adjust the infeed tension roller. Tension roller pressure can be adjusted two ways, either by loosening
the tension roller spring retaining screws
(See Item #3 of Figure 28) or by raising the height of the tension rollers.
To adjust the tension rollers to eliminate snipe marks, use this 2-Two Step procedure:
Step 1.) With the sanding drums properly aligned, loosen all four tension roller suspension bolts. Raise the table to
the bottom of the sanding drum(s). The tension rollers should be resting firmly on the conveyor bed. Tighten only
the two rear (outfeed) tension roller suspension bolts.
Step 2.) Lower the conveyor table by one full turn of the height adjustment handle. At this point, press down on the
front (infeed) tension roller so it is resting on the table. Now tighten the front (infeed) tension roller suspension bolts.
If there still is a snipe mark left on pieces being sanded, repeat Step 1 and Step 2, but in Step 2 lower the conveyor
bed a half turn instead of a full turn.
Warning: Improperly adjusted tension rollers (i.e., those set too high, rendering them non-functional) could allow
kick-back/slippage of pieces being sanded.