Promac SX-821DA Operating Instructions Manual page 6

Always wear suitable gloves when handling
sawblades.
Raise the saw arm to the vertical position
and lock in place (close both valves F and G).
Remove the wheel cover.
Move the blade guide assembly (N, Fig 2)
away from the wheel.
Remove the brush assembly.
Release the blade tension and remove the
blade.
Place new blade and make sure the teeth are
pointing the cutting direction (Fig 5).
Fig 5
Turn the blade tension knob until the proper
blade tension is achieved at green block of
tension scale (U)
Fig 6
Place a few drops of lightweight oil on the
blade.
Install the red blade guard, the brush
assembly and the wheel cover.
Connect to the power source.
7.3 Blade guide adjustment
Slide the blade guide assembly (N, Fig 2) as
close as possible to the material being cut.
7.4 Guide bearing adjustment
Disconnect the machine from the power
source.
Loosen bolts and adjust assembly (B) so that
back roller bearing is approximately 0,1mm
from the back of the blade. Tighten bolt.
Fig 7
Fig 8
Loosen blade guides (A, Fig 8) by loosening
screws (B). Slide blade guides away from the
blade.
(SX-821DA only).
Loosen locking nuts with a hex wrench.
Turn eccentric shaft (C) to adjust bearing to a
clearance of 0,05mm.
Tighten nut to lock.
Slide blade guides (A) back into contact with
the blade and tighten screws (B).
(SX-821DA only).
7.5 Blade tracking adjustment
Warning:
Blade tracking adjustment requires running
the saw with the wheel cover open. This
adjustment must be completed by qualified
persons only.
Failure to comply may cause serious injury!
The blade tracking has been set at the
factory and should not need adjustments.
The tracking is sensitive, in case of need start
with minor( ¼ turn) adjustments.
7.6 Feed speed adjustment
You can control the sawblade downward
feeding with the valve control knob (F) and
lock the saw with the on/off valve (G).
6
Fig 10....SX-821DA
The cutting of thin-walled workpieces
(profiles, tubes etc.) requires slow feeding to
avoid excessive wear of sawblade.
7.7 Vise adjustment
Use the quick lock handle (J) to open and
close the vise for clamping.
For vise adjustment use the handwheel (I).
Fig 11
7.8 Saw arm adjustment
The saw arm can be adjusted for square and
mitre cuts.
Loosen handle (H) and move saw arm to the
desired angle.
Fig 12
Always check the angle setup with a
combination square against the blade and
vice.
8. Maintenance and inspection
General notes:
Maintenance, cleaning and repair work may
only be carried out after the machine is
protected against accidental starting by
pulling the mains plug.
H