Cutting Drum Assemblies - Graco GrindLazer 25M992 Operation Manual

For removal of materials from flat horizontal concrete and asphalt surfaces
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DCS Models: On the DCS Control, press the Cut
Depth Button to lower the drum to the programmed
cut depth. See DCS Instructions, page 19, for more
details.
NOTE: Several test cuts may be needed to dial in
desired cutting depth.
NOTE: On harder surfaces, it may be best to make
several passes in increments of 1/32 in. (1mm) to get to
the desired depth.

Cutting Drum Assemblies

BURN HAZARD
Avoid touching or handling drum after use until it has
completely cooled.
Different drum configurations can be used for different
applications.
Carbide Flail Cutter/Assembly
Gradually adjust depth down to remove marking line
(minimal amount of paved surface should be removed).
Carbide Miller Cutter/Assembly
Best results for deep cuts are achieved by making
several thin passes. A single pass should be no deeper
than 1/32 in. (1mm) or damage to rods and cutters could
occur.
3A5918B
Diamond Blade Assembly
Watch Depth Control Wheels (K) during operation; if
wheels are rotating, proper depth is being achieved.
NOTICE
Diamond blades are designed to be cooled by air-
flow around the blades. Lift blade out of cut every
10 to 15 seconds, then run at full speed for several
seconds to prevent excessive heat build-up which
could damage the blades.
Cutter and Drum Assemblies
The engine should not labor. Run engine at full
speed and adjust forward speed to fit the work being
performed. Harder concrete surfaces will have to be
cut at a slower pace than asphalt or other softer
surfaces.
Non-DCS Models: Each increment on Drum
Adjustment Dial (D) is 0.010 in. (0.25 mm) depth change
of cutting drum.
Operation
17

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