Edco 2-EC Operator's Instruction Manual - Grinder/surfacer Accessories
Printed in USA
©2003
TVW
Page 12
E-2EC-2GC-411-I-1003
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.edcoinc.com • Email: sales@edcoinc.com
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 finish, 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, coatings, speed of operation,
matrix, etc. Extra weight can be added to the grinder to
increase production. Choose the DYMA-SERT to fit your job.
EG-1X
General purpose matrix for fast grinding of
concrete, 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 (flint, 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
finishes, 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 fine 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 approxi-
mately 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
required to meet surface specifications 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 fiberglass, ice, sugar, rubber, etc., have to
be removed from factory floors.
Cutter wheels are easily changed and may be space to fit
your particular job. Ideal for use in foundries, sugar refineries,
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 action. Use
to remove fins or marks on gyp-crete or other underlayment
materials. Remove mildew, rust or discolorations 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.
Scarifiers
(used with “multi-discs”)
Scarifiers are used to grind slab surfaces. The action is
faster than with grinding stones leaving a “rough sandpaper
finish” that may be desirable for non-slip floors, 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 in-
stances 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 required.
If the desired end result is a smooth, flat surface - use
scarifiers first 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 scarifiers. 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.