EDCO 4GC-P - Manual (Page 12)

Printed in USA
©2012
TVW
Page 12
E-SEC,2EC,2GC-P,4GC-I-0512
100 Thomas Johnson Drive, Frederick, MD 21702-4600 USA
Phone (301) 663-1600 • 1-800-638-3326
Fax (301) 663-1607 • 1-800-447-3326
Website: www.contrxsystems.com
Email: [email protected]
GRINDER/SURFACER ACCESSORIES
(for the models listed in this manual)
Dyma-Serts (Patented)
DYMA-SERTS are diamond segments welded to snap-
in plates for faster, controlled, dry grinding, and are ideal
for removing trowel marks, rough fi nish, rain spots, large
volume projects, paints, thin mastics, epoxy and urethane
coatings, or polymer enhanced surfaces. DYMA-SERTS
can be used wet or dry and will outperform stones by
grinding many times faster, removing tough materials, and
lasting many times longer - up to 30,000 sq. ft. (2,800 sq.
meters) life (at 1/32”) dependent on depth of removal, coat-
ings, speed of operation, matrix, etc. Extra weight can be
added to the grinder to increase production. Choose the
DYMA-SERT to fi t your job.
EG-1X
General purpose matrix for fast grinding of con-
crete, thin mastics, paints or urethane and epoxy thin coats.
EG-2X
Use on abrasive material. Matrix is designed
harder for concrete less than 72 hours old, brick or abrasive
sands. Grinding will be slower and tool life will be longer.
EG-3X
Hardest matrix for use on rough surfaces such
as epoxy mortars or sharp aggregates (fl int, granite, etc.).
NOTE: Dyma-Serts for use on terrazzo are available - call
EDCO for additional information.
Grinding Stones
Grinding Stones are generally used when there is a need
to remove trowel marks, rain spots, excess concrete, rough
fi nishes, or high spots less than 1/16” (2mm) in height. A
variety of grit sizes are available, beginning with a super
course C-10-S to very fi ne polishing types C-80 and C-120
used to grind terrazzo and marble. The EDCO grinder will
remove up to 1/16” (2mm) of concrete at the rate of approx-
imately 500 sq. ft/hr. (46 sq. m/hr.) using grinding stones of
the C-10-S grit. Extra weight can be added to the grinder to
improve the grinding speed. The hardness of the surface,
size of aggregate, age of slab or additives and sealers re-
quired to meet surface specifi cations will affect the grinding
speed and rate of removal.
Industrial Surfacer Discs
Industrial Surfacer Discs with replaceable hi-carbon steel
cutters can be used in place of the multi-accessory discs
to create a simple, high speed cleaning system and save
hours.
of hard work, intensive labor when hardened deposits of
material such as fi berglass, ice, sugar, rubber, etc., have to
be removed from factory fl oors.
Cutter wheels are easily changed and may be space to fi t
your particular job. Ideal for use in foundries, sugar refi ner-
ies, walk-in freezers, mobile home and recreational vehicle
manufacturers, rubber tire/hose/belt plants, paint booths,
boat/tub/shower manufacturers, steel mills or fabricating
plants.
Silabide Pads
Silabide Pads are special nylon mesh pads impregnated
with silicon carbide grit designed for super scrubbing ac-
tion. Use to remove fi ns or marks on gyp-crete or other
underlayment materials. Remove mildew, rust or discolor-
ations from concrete, clean concrete forms and strip scale
and rust from slab steel plate surfaces. Silabide pads can
be used with detergents or dry and are attached to the
EDCO Grinder with a pad driver assembly.
Scarifi ers
(used with “multi-discs”)
Scarifi ers are used to grind slab surfaces. The action is
faster than with grinding stones leaving a “rough sandpaper
fi nish” that may be desirable for non-slip fl oors, ceramic tile
installation or epoxy mortars.
The action of the steel cutter wheels is to “pick” away
the concrete from around the aggregates. The cutter will
not grind the aggregate, consequently, the aggregate will
remain exposed and above the surface of the slab. In some
instances the aggregate will loosen or split and break away
from the concrete bond. This condition can be controlled
and is useful when an exposed aggregate surface is re-
quired.
If the desired end result is a smooth, fl at surface - use scar-
ifi ers fi rst for fast surface removal, then change to coarse
grit (C-10-S) grinding stones to bring the high aggregate to
the level of the slab.
EDCO offers two (2) models of scarifi ers. The standard
small cutter wheel assembly has sharp carbon steel cutters
suitable for all scarifying applications. Life of this assembly
is from 3 to 6 hours depending on the surface material. The
heavy duty cutter assembly has an anticipated life from 8 to
20 hours. Action is basically the same as the standard units
except cutting life is extended. Use it where changing cutter
assemblies often is not convenient.