Promac SX-818DV Operating Instructions Manual page 7

Please check the direction of movement of the band. If
the saw teeth move in the wrong direction please
reconnect the cable (rotate phases).
6.2 Adjustment of upward and downward movement
of saw arm
The downward movement of the saw arm is to be
adjusted such that when the saw arm is in its lowest
position the teeth of the saw band do not touch the
worktop. The stop screw (A) is used to set the spacing
between the band and the worktop. After the spacing has
been set, tighten the counter nut.
The screw (B) is used to set the upward angle of the saw
arm and tighten the counter nut.
6.3 Adjustment of band tension and track
Turn the band tensioning handle (C) in a clockwise
direction to tension the saw band. The scale is graduated
enabling the band to be tensioned to suit the quality of
the saw band. Slacken the band tension at the end of
each working day in order to extend the service life of the
band.
Ensure that the saw band is correctly tensioned prior to
checking or adjusting the track. The track of the band is
correct if the rear side of the band only touches the flanges of
both wheels lightly when the machine is running.
6.4 Adjustment of cutting width
Firstly undo the screw (D). Shift the left-hand band guide rail
into the position required. Then tighten the screw (D).
6.5 Adjustment of band guide roller bearings, hard metal
band guide and spare bearing and removal of chippings
Before making the following settings, ensure that the track
and tension of the saw band are correctly adjusted:
1. The rear side of the band should make contact with the
spare block (B). In order to make adjustments, release the
setting screw and move the guide block upwards or
downwards until it touches the rear side of the band lightly.
2. The saw band should also touch the two band guide roller
bearings lightly and lie between them (E). The front bearing
is located on an eccentric mounting and can be adjusted
easily to suit the band thickness by loosening the nut and
turning the shaft (F).
3. The band guide bearings (E) should also be adjusted so
that they make light contact with the band (F).